Brother International DCP-8085DN Service Manual
Brother International DCP-8085DN Manual
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- Brother International DCP-8085DN | Service Manual - Page 1
Laser FAX/MFC SERVICE MANUAL MODEL: DCP-8080DN/8085DN MFC-8480DN/8880DN/8890DW Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. January 2009 SM-FAX105 Confidential - Brother International DCP-8085DN | Service Manual - Page 2
software title is mentioned in this manual has a Software © Copyright Brother 2009 All manual are trademarks or registered trademarks of their respective holders. Specifications are subject to change without notice. Model DCP-8080DN DCP-8085DN MFC-8480DN MFC-8880DN MFC-8890DW Duplex Print/ Scan - Brother International DCP-8085DN | Service Manual - Page 3
-sales service of the Laser Multi-Function Center (hereinafter referred to as "the machine"). This information is vital to the service personnel to maintain the high printing quality and performance of the machine. This service manual covers the DCP-8080DN/8085DN, MFC-8480DN/8880DN/8890DW machines - Brother International DCP-8085DN | Service Manual - Page 4
(Technical Information). A thorough understanding of this printer, based on information in this service manual and service information bulletins, is required for maintaining its print quality performance and for improving the practical ability to find the cause of problems. ii Confidential - Brother International DCP-8085DN | Service Manual - Page 5
22)/Class B. Before you use this product, make sure that you use one of the following interface cables. (1) A shielded parallel interface cable with twisted-pair this User's Guide may result in hazardous radiation exposure. For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT Varoitus! - Brother International DCP-8085DN | Service Manual - Page 6
radiation Maximum radiation power: Wave length: Laser class: 5 mW 770 - 810 nm Class 3B ■ EU Directive 2002/96/EC and EN50419 (European Union only) This equipment is marked with the above recycling - Brother International DCP-8085DN | Service Manual - Page 7
Brother International Corporation 100 Somerset Corporate Boulevard P.O. Box 6911 Bridgewater, NJ 08807-0911 USA Telephone: (908) 704-1700 declares, that the products Product name: Laser Printer DCP-8080DN/8085DN, MFC-8480DN/8880DN/ 8890DW the instructions, the interference by one or more of the - Brother International DCP-8085DN | Service Manual - Page 8
■ Laser Safety (110 to 120 volt model only) This machine is certified as a Class 1 laser product under the U.S. Department of Health and Human Services ( FDA regulations and must be attached to laser products marketed in the United States. MANUFACTURED: Brother Technology (Shenzhen) Ltd. NO6 Gold - Brother International DCP-8085DN | Service Manual - Page 9
CAUTION: When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. CAUTION: In case of any trouble with the laser unit, replace the laser unit itself. To prevent direct exposure to the laser beam, do not try - Brother International DCP-8085DN | Service Manual - Page 10
cautions that must be observed to service the printer properly or prevent damage to the printer. Note : • Indicates notes and useful tips to remember when servicing the printer. ** Listed below are the various kinds of "WARNING" messages included in this manual WARNING Always turn off the power - Brother International DCP-8085DN | Service Manual - Page 11
WARNING If you analyze malfunctions with the power plug inserted into the power outlet, special caution should be exercised even if the power switch is OFF because it is a single pole switch. WARNING DO NOT use flammable substances, any type of spray or any organic solvent/liquids contains alcohol - Brother International DCP-8085DN | Service Manual - Page 12
CHAPTER 1 SPECIFICATIONS - Brother International DCP-8085DN | Service Manual - Page 13
of different models. CONTENTS 1. COMPONENTS ...1-1 2. SPECIFICATIONS LIST 1-2 2.1 Printing ...1-2 2.2 Functions ...1-3 2.3 Electronics and Mechanics 1-5 2.4 Network Connectivity 1-6 2.5 Service Information 1-8 2.6 Paper ...1-9 2.6.1 Paper handling 1-9 2.6.2 Media specifications 1-10 2.6.3 Type - Brother International DCP-8085DN | Service Manual - Page 14
following major components: ADF Unit Scanner Unit Panel Unit NCU PCB Joint Cover ASSY Outer Chute ASSY Back Cover Driver PCB Speaker ASSY Laser Unit Side Cover R Rear Chute ASSY Fuser Unit Access Cover Side Cover L Main PCB Fig. 1-1 Frame Unit Toner LED PCB ASSY Process Cover ASSY - Brother International DCP-8085DN | Service Manual - Page 15
MFC MFC MFC 8080DN 8085DN 8480DN 8880DN 8890DW Print method Electrophotography by semiconductor laser beam scanning Laser Method: 1 polygon motor, 1 laser beam Wavelength: 770 nm - 810 nm Output: 5 mW (Max) Laser printing mode (Toner saving mode) Drum unit Life expectancy: 25,000 pages/drum - Brother International DCP-8085DN | Service Manual - Page 16
fonts, 12 bitmap fonts, 13 bar codes BR-Script 3 66 scalable fonts (PostScript® 3™) Model Printer driver Windows® DCP DCP MFC MFC MFC 8080DN 8085DN 8480DN 8880DN 8890DW PCL driver for Windows 2000 Professional, XP Home Edition, XP Professional Edition, XP professional x64 - Brother International DCP-8085DN | Service Manual - Page 17
requirements> Computer Platform & Operating System Version Processor Speed Windows® Apple® Macintosh® Windows Vista® Intel® Pentium® 4 or equivalent 64-bit supported CPU Windows Server® 2003 x64 Edition Windows® XP Professional x64 Edition Windows Server® 2003 Windows® XP Home Edition Windows - Brother International DCP-8085DN | Service Manual - Page 18
and Mechanics Model DCP DCP MFC MFC MFC 8080DN 8085DN 8480DN 8880DN 8890DW Power consumption Printing Standby Average660 × 451 × 475 mm (20.9 × 17.8 × 18.7 in.) Weight Without Carton with drum unit and toner cartridge Approx. 18.1 kg (39.9 lb) Approx. 18.4 kg (40.6 lb) Approx. - Brother International DCP-8085DN | Service Manual - Page 19
or greater Protocol support TCP/IP: ICMP, LLTD responder, Web Services Print, CIFS Client, SNTP brother.com for more information. Management utility BRAdmin Professional 3 *2 for Windows (Brother original Windows utility for printer download from http://solutions.brother.com. 1-6 Confidential - Brother International DCP-8085DN | Service Manual - Page 20
AUTH, SNMP v1/v2c/v3, ICMP, LLTD responder, Web Services Print, CIFS Client, SNTP NDP, RA, DNS resolver, mDNS 11/9/6 Mbps *1 A wireless network connection is supported only between the Brother printer and an access point for PC's running download from http://solutions.brother.com. 1-7 Confidential - Brother International DCP-8085DN | Service Manual - Page 21
: Parts Approximate Life (pages) Fuser unit 100,000 Laser unit 100,000 PF kit China MP: 25,000 Tray 1/2: 100,000 India MP: 12,000 Tray 1/2: 80,000 Others MP: 50,000 Tray 1/2: 100,000 * As for periodical replacement parts, refer to CHAPTER 4 in the Service Manual. 1-8 Confidential - Brother International DCP-8085DN | Service Manual - Page 22
2.6 Paper 2.6.1 Paper handling Model DCP 8080DN DCP 8085DN MFC 8480DN MFC 8880DN MFC 8890DW Paper Standard 250 sheets Input *1 tray Multipurpose tray 50 Sheets (Plain)/ 3 Sheets (Envelope) Option 250 sheets ADF up to 50 sheets (Xerox4024 20lbs, environment: temp. - Brother International DCP-8085DN | Service Manual - Page 23
outside the USA and Canada. 2.6.3 Type and size of paper The printer loads paper from the installed paper tray or the multi-purpose tray. The name s for the paper trays in the printer driver as follows; Paper tray (T1) Multi-purpose tray Optional lower tray unit Duplex unit for automatic duplex - Brother International DCP-8085DN | Service Manual - Page 24
MP Tray Choose the DX media type from the printer driver Plain paper Plain paper 75 to 105 g/m2 Yes alkaline paper. • Use long-grain paper. • This printer can use recycled paper that meets DIN 19309 specifications. • DO NOT use ink jet paper because it may cause a paper jam or damage your - Brother International DCP-8085DN | Service Manual - Page 25
logical page length Distance from edge of physical page to edge of logical page A Note : • "Logical page" shows the printable area for a PCL driver. • "Printable area" shows mechanical printable area of the machine. • Therefore, the machine can only print within the shaded area when you use a PCL - Brother International DCP-8085DN | Service Manual - Page 26
The table below shows the printable areas when printing on Portrait for each paper size. Size Letter Legal Folio Executive A 4 A 5 A 6 B 5 (JIS) B 5 (ISO) B 6 (ISO) Envelope Monarch Envelope Com-10 Envelope DL Envelope C5 HAGAKI A4 Long A 215.9mm 8.5" (2,550dots) 215.9mm 8.5" (2,550dots) 215.9mm - Brother International DCP-8085DN | Service Manual - Page 27
Size DL Long Edge 3X5 A 220.0mm 8.66" (2,598dots) 76.2mm 3.00" (900dots) B 110.0mm 4.33" (1,299dots) 127.0mm 5.00" (1,500dots) C 207.0mm 8.17" (2,450dots) 63.5mm 2.50" (750dots) D 110.0mm 4.33" (1,299dots) 127.0mm 5.00" (1,500dots) E 6.26mm 0.25" (74dots) 6.35mm 0.25" (75dots) F G 4.2mm 0mm - Brother International DCP-8085DN | Service Manual - Page 28
logical page length Distance from edge of physical page to edge of logical page A Note : • "Logical page" shows the printable area for a PCL driver. • "Printable area" shows mechanical printable area of the machine. • Therefore, the machine can only print within the shaded area when you use a PCL - Brother International DCP-8085DN | Service Manual - Page 29
The table below shows the printable areas when printing on Landscape for each paper size. Size Letter Legal Folio Executive A 4 A 5 A 6 B 5 (JIS) B 5 (ISO) B 6 (ISO) Envelope Monarch Envelope Com-10 Envelope DL Envelope C5 HAGAKI A4 Long A B 279.4mm 215.9mm 11.0" 8.5" (3,300dots) (2,550dots) - Brother International DCP-8085DN | Service Manual - Page 30
Size DL Long Edge 3X5 A 110mm 4.33" (1,299dots) 127mm 5.00" (1,500dots) B 220mm 8.66" (2,598dots) 76.2mm 3.00" (900dots) C 102mm 4.00" (1,199dots) 116.8mm 4.60" (1,380dots) D 220mm 8.66" (2,598dots) 76.2mm 3.00" (900dots) E 4.0mm 0.16" (50dots) 5.0mm 0.20" (60dots) F G 4.2mm 0mm 0.16" ( - Brother International DCP-8085DN | Service Manual - Page 31
2.8 Print Speeds with Various Settings Print speed is up to 30 ppm for A4 size and 32ppm for Letter size when loading A4 or Letter size paper from the paper tray in the plain paper mode. Actual print speed varies depending on the media type or paper size as shown in the tables below; - Brother International DCP-8085DN | Service Manual - Page 32
Yes (3 steps + OFF) One-Touch Dial No Speed Dial No Figures of One-Touch No & Speed Dial Resister MFC 8480DN MFC 8880DN Yes Yes No (Europe:Yes) Yes (3 steps + OFF) Yes (3 steps + OFF) 40 (20 x 2) locations 300 locations 20 digits 15 characters Yes (up to 20 groups) Yes Yes MFC 8890DW - Brother International DCP-8085DN | Service Manual - Page 33
No Quick-Scan (Memory transmission) Memory Transmission (ITU-T Chart) ECM (Error Correction Mode) Error Re-Transmission No Broadcasting No Manual Broadcasting No Fax Forwarding No DCP 8085DN MFC 8480DN MFC 8880DN MFC 8890DW 33.600bps Approx. 2sec. (Brother#1 Std resolution - Brother International DCP-8085DN | Service Manual - Page 34
Out-of-Paper Reception No (ITU-T Chart) Fax Rx Stamp No DCP 8085DN MFC 8480DN Yes MFC 8880DN MFC 8890DW Yes Yes Yes Yes Yes Yes up to 500 pages (ITU-T Test Chart, Standard Resolution, JBIG) up to 600 pages (Brother #1Chart, Standard Resolution, JBIG) Yes 2.11 List/Report Model DCP 8080DN - Brother International DCP-8085DN | Service Manual - Page 35
to 99) Multi Copy Sort Yes Reduction/ Enlargement (%) 25% - 400% in 1% increments Resolution (dpi) Maximum. 1200 x 600 dpi Auto Duplex Scanning No Yes No Yes Copy Manual Duplex Copy No N in 1 Yes Poster No Image Enhancement No 2.13 Scanner Model DCP 8080DN DCP 8085DN MFC 8480DN - Brother International DCP-8085DN | Service Manual - Page 36
2.14 USB Host Model PictBridge Direct Print Media Drive DCP 8080DN No Yes No DCP 8085DN MFC 8480DN MFC 8880DN MFC 8890DW 1-23 Confidential - Brother International DCP-8085DN | Service Manual - Page 37
CHAPTER 2 THEORY OF OPERATION Confidential - Brother International DCP-8085DN | Service Manual - Page 38
as well as locating defects for troubleshooting CONTENTS 1. MECHANICS ...2-1 2. ELECTRONICS ...2-2 2.1 General Block Diagram 2-2 3. MECHANICS ...2-3 3.1 Cross-section Drawing 2-3 3.2 Scanner Mechanism 2-5 3.3 Paper Feeding ...2-13 3.3.1 Plate-up Function of the Paper Tray 2-14 3.3.2 Paper - Brother International DCP-8085DN | Service Manual - Page 39
Control Section Fax data Printer data NCU* Speaker ADF unit Scanner unit Laser printing unit Paper Low- Laser unit (including the polygon motor) - Laser-sensitive drum - Developer roller - Transfer roller - Heater roller - Main motor Fig. 2-1 *Provided on models supporting facsimile function - Brother International DCP-8085DN | Service Manual - Page 40
Toner LED PCB (Light emission) Front relay PCB New toner sensor Wireless LAN (Wireless LAN model) Polygon motor Laser diode PCB NCU PCB Main PCB CCD module Home position sensor Scanner motor FB Scanner cover sensor Battery Document front sensor 1 Document front sensor 2 Document rear sensor - Brother International DCP-8085DN | Service Manual - Page 41
3. MECHANICS 3.1 Cross-section Drawing - Printer part Paper stack lever Transfer roller Eject roller 2 Back cover Heat roller Eject roller 1 Paper eject actuator Pressure roller Duplex unit Paper tray Paper tray (LT unit) Laser unit Corona wire Exposure drum Develop roller Fig. 2-3 2-3 MP tray - Brother International DCP-8085DN | Service Manual - Page 42
-up roller Document front sensor actuator 1 Document front sensor actuator 2 Document front sensor 1 Paper feed roller 3 HP sensor CCD module Paper feed roller 4 Flap A Fig. 2-4 Guide Shaft CCD drive belt Pulley ASSY 2-4 Confidential - Brother International DCP-8085DN | Service Manual - Page 43
document feeder (ADF). The scanner unit consists of a scanner top cover, CCD unit and scanner base. Document cover ADF ADF & document cover ASSY Top cover White-level reference film CCD module Guide shaft Belt Pulley ASSY Scanner unit (Scanner cover) Scanner base Fig. 2-5 2-5 Confidential - Brother International DCP-8085DN | Service Manual - Page 44
lens reduces the scanned data so that the image is generated on the CCD. 2. Driving of the CCD unit The CCD unit is supported by the fixed value of the white color by scanning the white-level reference film inside the scanner unit with the CCD. 5. Function of scanner lock lever The CCD unit is fixed - Brother International DCP-8085DN | Service Manual - Page 45
started and the scanning operation is started. The CCD motor is rotated so that its action is transferred to the CCD drive belt through the gear train. The CCD unit scans the document while sliding to the right hand side. Guide shaft CCD unit ADF unit Drive plate ASSY (Scanner motor FB) Pulley - Brother International DCP-8085DN | Service Manual - Page 46
one document or the document for every plurality to the ADF scanning part of the scanner unit, and performs continuation scanning. As for the ADF of this machine, the duplex scanning the ADF, the machine starts scanning the document glass ignoring the ADF. 3. Function of each motor/solenoid - ADF - Brother International DCP-8085DN | Service Manual - Page 47
roller Document front sensor 2 Paper feed roller 4 Flap A Fig. 2-7 The duplex scanning mechanism allows you to use the following two types of scanning, "ADF scanning" and "document glass scanning". These two scanning methods are switched depending on whether the document front sensor 1 detects the - Brother International DCP-8085DN | Service Manual - Page 48
one from the top page of the stacked documents. (2) The document is passed through the paper feed rollers 1, 2 and 3, and is passed over the CCD unit so that the document is scanned. Then, the document is ejected to the document cover LGL by the eject roller. Paper feed roller 2 Paper feed roller - Brother International DCP-8085DN | Service Manual - Page 49
one from the top page of the stacked documents. (2) The document is passed through the paper feed rollers 1, 2 and 3, and is passed over the CCD unit so that the document is scanned. Then, the document is sent for the specified distance by the SB (switch back) roller ASSY, and the SB (switch - Brother International DCP-8085DN | Service Manual - Page 50
(4) The SB (switch back) roller ASSY is turned counter again, and the document is drawn again. The document is passed through the paper feed rollers 1, 2 and 3, and ejected to the document cover by the eject roller. Paper feed roller 2 SB roller ASSY Paper feed roller 3 Fig. 2-11 Eject roller - Brother International DCP-8085DN | Service Manual - Page 51
3.3 Paper Feeding DX path Paper tray path Fig. 2-12 2-13 MP path LT path Confidential - Brother International DCP-8085DN | Service Manual - Page 52
3.3.1 Plate-up Function of the Paper Tray The plate ASSY in the paper tray is feed roller and to give the paper feeding performance. When the paper tray (Tray1 cassette) is installed into the printer, the lift gear 46 is rotated, and the motor drive is transmitted to the plate ASSY so that it is - Brother International DCP-8085DN | Service Manual - Page 53
3.3.2 Paper supply The feed roller picks up a few sheets or one sheet of paper from the paper tray every time it is rotated and feeds it to the separation roller. Pinch roller Regist roller Regist actuator - Brother International DCP-8085DN | Service Manual - Page 54
/toner ASSY. Drum/toner ASSY Exposure drum Transfer roller Regist actuator rear Regist roller Regist actuator front Fig. 2-16 Separation roller The regist actuator rear in the path from the regist roller to the transfer roller controls the first print position on the paper. The printer starts - Brother International DCP-8085DN | Service Manual - Page 55
3.3.4 Paper eject After the printing image on the exposure drum is transferred onto the paper, the paper is fed to the fuser unit to fix unfixed toner onto the paper by the heat roller and the pressure roller in the fuser unit. Afterwards, the paper is ejected from the fuser unit. The - Brother International DCP-8085DN | Service Manual - Page 56
and the transfer roller to the transfer block in the drum unit again for process of printing on the back of sheet. Eject roller ASSY 2 Back cover Rear chute ASSY Heat roller Exposure drum Pinch roller Eject roller ASSY 1 Pressure roller Duplex unit Transfer roller Regist - Brother International DCP-8085DN | Service Manual - Page 57
of the LT tray. The drawn recording paper is separated into individual sheet by the separation roller and the separation pad, and fed to the printer by the feed roller TR. Paper Plate Fig. 2-20 2-19 Feed roller TR Separation roller Separation pad Paper feed roller Confidential - Brother International DCP-8085DN | Service Manual - Page 58
when a rotation rate of the develop roller reaches its upper limit. (1) Detection by the toner sensor The low amount of toner remaining can be detected by checking the imperviousness to light of the toner in the cartridge by means of the transmissive photosensor. (2) Detection by means of rotation - Brother International DCP-8085DN | Service Manual - Page 59
operation in company with opening or closing cover will also cause the deterioration of toner, so the more frequency those operations be taken, the less pages the toner cartridge can print. Table: The toner cartridge lives in case of pressing power switch Off/ON before printing. Average printed - Brother International DCP-8085DN | Service Manual - Page 60
that is generated by the new toner sensor, tell the machine that a high yield toner cartridge has been installed. Toner cartridge New toner actuator Relay front PCB ASSY Gear (4) New toner sensor Gear (1) Gear (2) Fig. 2-21 Rib - Brother International DCP-8085DN | Service Manual - Page 61
cartridge is replaced with a new one, the developing bias voltage is initialized at the same time. The toner used for the printer has a property that print density is light first and gradually darker in the course of usage. The developing bias controls the toner property so that the print density - Brother International DCP-8085DN | Service Manual - Page 62
changes No count up Page counter for each toner cartridge Continued Coverage for each toner cartridge Continued Developing bias voltage Reset (Initial setting)*2 *1 Excluding a toner cartridge in use in which there is a little toner remained. *2 The developing bias voltage is reset to - Brother International DCP-8085DN | Service Manual - Page 63
A printed image is formed on the surface of the drum by applying laser beam. 3. Development: Toner is adhered to the surface of the drum. 4. Transfer: The toner on the surface of the exposure drum is transferred to paper. 5. Fusing: The transferred toner is fused into place on the paper. After these - Brother International DCP-8085DN | Service Manual - Page 64
of the ion charge is controlled by constant voltage of the grid 850 V to ensure it is distributed evenly on the drum surface. In order to coat toner on the exposure drum, the drum needs to be evenly electrified. Ions are produced by supplying high-voltage power to the corona wire. Corona wire Ion - Brother International DCP-8085DN | Service Manual - Page 65
by a polygon mirror rotating at high speed. The evenly charged exposure drum is irradiated with reflected light and exposed. Surface potential is lowered by such exposure and a printed image is formed. CO lens Laser diode Polygon mirror Laser unit Exposure drum Fig. 2-24 2-27 Confidential - Brother International DCP-8085DN | Service Manual - Page 66
roller, the amount of toner taken to the drum is adjusted to keep printing density constant. Charging Laser beam 150 V 400 V to 300 V (Changes depending on use condition) 850 V Toner Develop roller Fig. Ref. 2-25 Toner adheres to the charged - Brother International DCP-8085DN | Service Manual - Page 67
(4) Transfer By applying a minus charge to the transfer roller, the toner adhered to the exposure drum is transferred to paper. Supply roller Develop roller Toner cartridge Exposure drum Toner Transfer roller Fig. 2-27 Memo : • Control of transfer bias The transfer bias applied in the transfer - Brother International DCP-8085DN | Service Manual - Page 68
(5) Fusing The toner transferred on paper passes between the heat roller and the pressure roller in the fuser unit, being fused by heat and pressure. The thermistor detects - Brother International DCP-8085DN | Service Manual - Page 69
Type Located on Function Detect the paper top toner sensor Photo sensor Relay front PCB Detect whether a new toner cartridge is installed. Detect a new toner cartridge type. Toner LED PCB (Light emission) Toner sensor Scanner unit ASSY Detect the home position of the CCD unit. 2-31 - Brother International DCP-8085DN | Service Manual - Page 70
rear sensor HP sensor Frame L Paper eject sensor (Relay rear PCB) DX tray sensor New toner sensor (Relay front PCB) Front cover sensor Toner sensor PCB (Light reception) Regist rear sensor High-voltage PS PCB Fig. 2-29 Toner LED PCB (Light emission) Frame R MP PE sensor PE EG sensor PE sensor Edge - Brother International DCP-8085DN | Service Manual - Page 71
CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING Confidential - Brother International DCP-8085DN | Service Manual - Page 72
45 5.3 Troubleshooting Image Defect 3-46 6. SOFTWARE SETTING PROBLEMS 3-60 7. NETWORK PROBLEMS 3-61 8. TROUBLESHOOTING OF THE COMMUNICATIONS ERRORS 3-62 9. TROUBLESHOOTING OF THE CONTROL PANEL 3-67 10. TROUBLESHOOTING OF FAX FUNCTIONS 3-69 11. DOCUMENT FEEDING PROBLEMS 3-73 12. SCANNING IMAGE - Brother International DCP-8085DN | Service Manual - Page 73
chapter covers some sample troubles. However, those samples will help the service personnel pinpoint and repair other defective elements. 1.1 Precautions Be sure to observe and follow all the precautions to prevent any secondary problems from happening during troubleshooting. (1) Always turn off the - Brother International DCP-8085DN | Service Manual - Page 74
1.2 Part names ADF Unit Scanner Unit NCU PCB Joint Cover ASSY Outer Chute ASSY Back Cover Driver PCB Panel Unit Speaker ASSY Laser Unit Side Cover R Rear Chute ASSY Fuser Unit Access Cover Side Cover L Main PCB Fig. 3-1 Frame Unit Toner LED PCB ASSY Process Cover ASSY PS PCB MP - Brother International DCP-8085DN | Service Manual - Page 75
The drum unit (including the toner cartridge) problems as listed below. • Condensation on the optical surfaces such as the scanner window, lenses, the reflection mirror and the protection glass may cause the print image to be light. • If the exposure drum temperature. If the drum unit is unpacked - Brother International DCP-8085DN | Service Manual - Page 76
(2) Cleaning Use a soft dry cloth. warning DO NOT use flammable substances such as alcohol, benzine, thinner or any type of spray to clean the inside or outside of the machine. Doing this may cause a fire or electrical shock. 3-4 Confidential - Brother International DCP-8085DN | Service Manual - Page 77
the service personnel promptly locate the cause of a problem (if any), the facsimile equipment incorporates the self-diagnostic functions which LCD Error Message Access Error Cartridge Error Replace Parts Drum Replace Parts Fuser Unit Replace Parts Laser Unit Replace Parts PF Kit MP Replace Parts PF - Brother International DCP-8085DN | Service Manual - Page 78
Distinctive Ring mode. You cannot change the - Receive Mode from Manual to another mode. Drum Error The corona wire on the drum unit needs to be cleaned. Clean the corona wire on the drum unit. The drum unit has reached Replace the drum unit. the end of its life. 3-21 3-23 Duplex Disabled - Brother International DCP-8085DN | Service Manual - Page 79
drum unit and toner cartridge assembly. 3-14 No Tray The paper tray is not completely closed. Close the paper tray properly. 3-24 Not Registered You tried to access a One Touch or Speed Dial number that is not programmed. Set up the One Touch or Speed Dial number. 3-70 Out of Memory The - Brother International DCP-8085DN | Service Manual - Page 80
the toner cartridge with a up and printing is not new one. possible. 3-17 Scan Unable XX The machine has a Perform processing with the error mechanical problem. code. - Document is too long for Press Stop/Exit. Use the suitable duplex scanning. size of paper for duplex scanning. Scanner - Brother International DCP-8085DN | Service Manual - Page 81
the fuser 54 unit 55 Replacement time of the laser unit 56 Back cover opened 57 Paper jam (Duplex tray) 58 Fuser unit failure Refer Error to: codes Problem 3-12 59 Fuser unit failure (Detect fuser failure at start-up) 3-12 63 Replace toner or Toner life end Refer to: 3-17 3-17 3-12 67 - Brother International DCP-8085DN | Service Manual - Page 82
paper size is not 99 supported for duplex printing (DX) ADF duplex scanning cannot be 3-27 BF implemented due to too long 3-33 document 9D Not used C0 New toner detection lever failure 3-34 9F Paper empty 3-28 C7 Run out of memory for data expansion of PC printer 3-34 A1 Front cover opened - Brother International DCP-8085DN | Service Manual - Page 83
E2 Central temperature of heat roller detected more than 280°C 3-37 EF LVPS PCB failure 3-38 E6 EEPROM error 3-37 F8 Battery connection error 3-38 EB E2PROM data laser unit error 3-37 F9 Maintenance mode 74 Non-decision 3-39 EC Fuser fan performance failure 3-37 FF Excess current to - Brother International DCP-8085DN | Service Manual - Page 84
the message indicated on the LCD or following the items indicated in User Check. ■ Error code 1E Drum End Soon Replacement time of the drum unit. User Check • Replace the drum unit with a new one. ■ Error code 1F Too Many Trays Two or more optional trays are installed. User Check • Install - Brother International DCP-8085DN | Service Manual - Page 85
■ Error code 35 Print Unable 35 Turn the power off and then back on again. EEPROM of main PCB failure Step 1 Cause Main PCB failure Remedy Replace the main PCB ASSY. ■ Error code 36 Print Unable 36 Turn the power off and then back on again. HVPS PCB during standby failure Step 1 Cause Main - Brother International DCP-8085DN | Service Manual - Page 86
Toner Cartridge. No toner cartridge User Check • Install a new toner cartridge. Step 1 2 3 Cause Dirt on electrodes on toner cartridge ASSY. ■ Error code 50 Replace Parts Drum Replacement time of the drum unit User Check • Replace the drum unit with a new one. ■ Error code 51 Replace Parts PF - Brother International DCP-8085DN | Service Manual - Page 87
Check • Replace the paper feed kit T1 with a new one. Step 1 Cause Replacement time of the paper feed kit T1 Check • Replace the paper feed kit T2 with a new one. Step 1 Cause Replacement time of the paper feed kit T2 unit with a new one. Step 1 Cause Remedy Replacement time of the fuser unit - Brother International DCP-8085DN | Service Manual - Page 88
■ Error code 56 Cover is Open Close the Fuser Cover which can be found behind the Back Cover up the machine. Back cover opened User Check • Close the back cover. • Install the DX unit. Step 1 2 3 Cause Remedy Harness connection failure of relay Check the harness connection of the relay rear - Brother International DCP-8085DN | Service Manual - Page 89
2 Main PCB failure Replace the main PCB ASSY. ■ Error code 63 Replace Toner Open the Top Cover, replace Toner Cartridge. Replace toner or Toner life end User Check • Replace the toner cartridge with a new one. Step 1 2 3 Cause Toner sensor PCB ASSY failure Relay front PCB ASSY failure Main PCB - Brother International DCP-8085DN | Service Manual - Page 90
■ Error code 68 Print Unable 68 Turn the power off and then back on again. Temperature rise when heater is off Step 1 2 Cause Fuser unit failure Main PCB failure Remedy Replace the fuser unit Replace the main PCB ASSY. ■ Error code 69 Print Unable 69 Turn the power off and then back on again. - Brother International DCP-8085DN | Service Manual - Page 91
■ Error code 6A Print Unable 6A Turn the power off and then back on again. Fuser temperature does not detect 60°C within the specified time (center thermistor) Error code 6B Print Unable 6B Turn the power off and then back on again. Fuser temperature does not detect 100°C within the specified time - Brother International DCP-8085DN | Service Manual - Page 92
failure Error code 72 Print Unable 72 Turn the power off and then back on again. Laser beam emission failure Step 1 2 Cause Laser scanner unit failure Main PCB failure Remedy Replace the laser scanner unit. Replace the main PCB ASSY. ■ Error code 75 Cooling Down Wait for a while Sensor of - Brother International DCP-8085DN | Service Manual - Page 93
■ Error code 7A Print Unable 7A See Troubleshooting and routine maintenance chapter in User's Guide. No detection of main motor synchronous signal Step the corona wire in the drum unit. • Replace the drum unit with a new one. Step 1 2 3 Cause Dirt or dust on drum unit electrodes Charge HVPS PCB - Brother International DCP-8085DN | Service Manual - Page 94
■ Electrodes location of the toner/drum unit (4) Developer roller Drum Unit (3) Charge (5) Grid (7) Cleaner (1) Exposure drum (6) Transfer roller Fig. 3-2 ■ Electrodes location of the machine Cleaner Grid Charge Developer roller Fig. 3-3 Exposure drum Transfer roller - Brother International DCP-8085DN | Service Manual - Page 95
failure Remedy Correct catching of the registration front actuator. Replace the main PCB ASSY. ■ Error code 83 Drum Error Open the Front Cover, replace the Drum Unit. Refer to the User's Guide for instructions. Discharge detection error (Unable to print after the discharge detection error until - Brother International DCP-8085DN | Service Manual - Page 96
PCB failure 4 Connector 55533-1219 failure (only Tray 2) Remedy Check the sensor performance following the procedure described in "Maintenance mode 32". If any problem occurs, replace the T1 PE/edge sensor PCB failure/T2 PE/ edge sensor PCB. Check the harness connection of the T1 PE/edge sensor - Brother International DCP-8085DN | Service Manual - Page 97
inside the machine User Check • Check if the paper is jammed around the removed drum unit. If jammed, remove it. Step 1 2 3 4 Cause Remedy Harness following the procedure described in "Maintenance mode 32". If any problem occurs, replace the registration rear sensor. Main PCB failure Replace - Brother International DCP-8085DN | Service Manual - Page 98
8C Jam MP Tray Remove the jammed paper from Multi Purpose Tray and press Start. Paper jam ( . If jammed, remove it. • Adjust the paper guide corresponding to the paper size. • Check if too problem occurs, replace the front door unit ASSY. procedure described in "Maintenance mode 32". If any problem - Brother International DCP-8085DN | Service Manual - Page 99
mode 32". If any problem occurs, replace the relay rear PCB ASSY. Replace the main PCB ASSY. ■ Error code 99 Size mismatch DX Press Job Cancel. Specify the correct paper and load the same size paper as the Printer driver setting. Specified paper size is not supported for duplex printing (DX - Brother International DCP-8085DN | Service Manual - Page 100
PCB ASSY and reconnect it. Correct catching of the PE actuator. Check the sensor performance following the procedure described in "Maintenance mode 32". If any problem occurs, replace the PE PG sensor PCB ASSY. Replace the HVPS PCB unit. Replace the main PCB ASSY. ■ Error code A1 Cover is Open - Brother International DCP-8085DN | Service Manual - Page 101
■ Error code A2 Document Jam Clear the scanner jam, then press the Stop Key. During scanning, 90 cm or longer of a document is rear sensor. Replace the main PCB ASSY. ■ Error code A3 Document Jam Clear the scanner jam, then press the Stop Key. Document rear sensor is not turned on when feeding - Brother International DCP-8085DN | Service Manual - Page 102
ASSY. ■ Error code A7 Scan Unable A7 See Troubleshooting and routine maintenance chapter in User's Guide. Scanning color parameter file failure Error code A8 Scan Unable A8 See Troubleshooting and routine maintenance chapter in User's Guide. Scanning color parameter matching malfunction when - Brother International DCP-8085DN | Service Manual - Page 103
the main PCB ASSY. Replace the CCD unit. ■ Error code AE Scan Unable AE See Troubleshooting and routine maintenance chapter in User's Guide. CCD unit home position sensor is not turned on. User Check • Check that the scanner lock lever is unlocked. Step 1 2 3 4 5 6 Cause Drive PCB failure Belt - Brother International DCP-8085DN | Service Manual - Page 104
error is indicated on the LCD in the maintenance mode. Error code B2 Scanner Error Gain control data level error for scanning * This error is indicated on the LCD in the maintenance mode. Error code B7 Scanner Error A/D converter standard voltage failure; at High side * This error is indicated on - Brother International DCP-8085DN | Service Manual - Page 105
unit. 2 Main PCB failure Replace the main PCB ASSY. 3 White tape malfunction Replace the scanner unit. ■ Error code BF Scan Unable BF Document is too long for duplex scanning. Press Stop key. ADF duplex scanning cannot be implemented due to too long document User Check • Use the document of - Brother International DCP-8085DN | Service Manual - Page 106
counter. (Refer to "5.2 Develop Roller / Developing Bias Voltage Counter Reset Function" in Chapter 7.) Replace the relay front PCB. ■ Error code C7 Out of Memory Press Job Cancel. Run out of memory for data expansion of PC printer User Check • Install more DIMM. • Lower the resolution. Step - Brother International DCP-8085DN | Service Manual - Page 107
on again after a while. • Replace the USB device with another one. Step 1 2 3 Cause Remedy Harness connection failure of USB Check the code CD No Toner Open the Front Cover, then install the Toner Cartridge. Excess current to USB device User Check • Check if the drum unit is installed - Brother International DCP-8085DN | Service Manual - Page 108
■ Error code D1 Machine Error D1 Modem initialization failed Step 1 Cause Main PCB failure Remedy Replace the main PCB ASSY. ■ Error code DD Fusser Error Turn the power off, then on again. Leave the machine for 15min. Fuser error other than 58, 59, 68, 69, 6A, 6B, 6C, 6D, 6E, 6F, 76, 78, DE - Brother International DCP-8085DN | Service Manual - Page 109
power off and then back on again. E2PROM data laser unit error Step 1 Cause Main PCB failure Remedy Replace the main PCB ASSY. ■ Error code EC Print Unable EC See Troubleshooting and routine maintenance chapter in User's Guide. Fuser fan performance failure Step 1 2 Cause Main fan failure - Brother International DCP-8085DN | Service Manual - Page 110
Cause LVPS PCB failure Main PCB failure Remedy Replace the LVPS PCB ASSY. Replace the main PCB ASSY. ■ Error code F8 Machine Error F8 Battery connection error Step 1 2 3 Cause Remedy Battery harness connection failure Reconnect the battery harness. Main PCB failure Replace the main PCB ASSY - Brother International DCP-8085DN | Service Manual - Page 111
■ Error code F9 Machine Error F9 Maintenance mode 74 Non-decision Step 1 2 Cause Turn the power off, when the Maintenance mode 74 "PARAMETER INIT" is in progress. Main PCB failure Remedy Implement the Maintenance mode 74 again. Replace the main PCB ASSY. ■ Error code FF Unusable Device Remove - Brother International DCP-8085DN | Service Manual - Page 112
failure Does the T1 solenoid work correctly? No Replace the T1 solenoid. T1 solenoid pathway of the high-voltage power supply PCB broken Is the problem solved after replacing the highvoltage power supply PCB ASSY? Replace the high-voltage power supply PCB ASSY. Yes Main PCB failure Is the - Brother International DCP-8085DN | Service Manual - Page 113
) "4.10 Sensor Operational Check (Function code 32)" in Chapter 7) Registration solenoid failure Is the problem solved after replacing the registration solenoid? Replace the registration Yes solenoid. Toner LED PCB failure Is the problem solved after replacing the toner LED PCB ASSY? Replace - Brother International DCP-8085DN | Service Manual - Page 114
Does the LT edge catching on some actuator move smoothly? position Re-assemble the LT edge No actuator. LT sensor PCB ASSY failure Is the problem solved after replacing the LT sensor PCB ASSY? Replace the LT sensor Yes PCB ASSY. LT solenoid failure Is the - Brother International DCP-8085DN | Service Manual - Page 115
Check Is there dirt around the entrance of the fuser unit? Is the problem solved if new fuser unit is replaced? Result Remedy Clean the entrance of in the paper at the eject roller 2 - Check that the problem is solved if new paper is used. Step 1 2 Cause Check Result Remedy - Brother International DCP-8085DN | Service Manual - Page 116
in the left figure. - Change the paper. Step 1 Cause Check Result Remedy Mismatch the setting the paper and the eject roller 1 Is the problem solved by changing the position of the anti-curl lever? Change the position of the Yes anti-curl lever. Slide the lever 2 to the right - Brother International DCP-8085DN | Service Manual - Page 117
5. IMAGE DEFECT TROUBLESHOOTING 5.1 Image Defect Examples Light Faulty registration Dark No. Parts name Diameter The pitch which appears in the image 1 Develop roller Ø20.0 mm 42.5 mm 2 Exposure drum Ø30.0 mm 94.2 mm 3 Heat roller in the fuser unit Ø25.0 mm 78.5 mm 4 Pressure roller - Brother International DCP-8085DN | Service Manual - Page 118
body dirty? Dirt on scanner windows of the laser unit Is the scanner windows of the laser unit dirty? Wipe the dirt off with a soft, Yes clean, lint free cloth. (Refer to Fig. 3-6.) Toner sensor failure After replacing the toner cartridge with a new one, does the same problem occur even after - Brother International DCP-8085DN | Service Manual - Page 119
can cause this problem. - Replace the drum unit with a new one. - Replace the toner cartridge with a new one. Step 1 2 3 4 5 Cause Check Result Remedy Drum unit electrode dirty Is the electrode of the drum unit dirty? Yes Clean the electrode. Drum unit failure Is the problem solved Replace - Brother International DCP-8085DN | Service Manual - Page 120
■ Poor fixing - Replace the drum unit with a new one. - Replace the toner cartridge with a new one. Step 1 2 3 4 5 6 Cause Check Result Remedy High pressure of Is the problem solved by Change the position of the pressure roller in changing the position of Yes anti-curl lever. - Brother International DCP-8085DN | Service Manual - Page 121
Replace the drum unit with a new one. - Replace the toner cartridge with a new one. Step 1 2 3 4 5 Cause Check Developing bias voltage conduction failure Are the electrodes on the drum unit and machine body dirty? Scanner harness of the laser unit connection failure Is the scanner harness of - Brother International DCP-8085DN | Service Manual - Page 122
Fig. 3-3.) Is the corona wire damaged? Yes Replace the drum unit. Scanner harness of the laser unit connection failure Is the scanner harness of the laser unit connected securely? Reconnect the scanner No harness of the laser unit. FG harness ASSY connection failure Is the FG harness ASSY - Brother International DCP-8085DN | Service Manual - Page 123
vertical streaks in a light background - Clean the inside of the machine and the corona wire in the drum unit. - Replace the toner cartridge with a new one. Step 1 Cause Drum unit failure Check Is the problem solved after replacing the drum unit? Result Remedy Yes Replace the - Brother International DCP-8085DN | Service Manual - Page 124
disappear by Yes printing approximate 10 pages. If the same problem occurs, replace the toner cartridge. Scratch and Dirt on the exposure drum Are the horizontal stripes at 94.2 mm (exposure drum circumference) intervals? Replace the drum unit. Yes Scratch and Dirt Are the horizontal stripes - Brother International DCP-8085DN | Service Manual - Page 125
selected in the printer driver. - The problem may disappear by itself. Try printing multiple pages to clear this problem especially if the machine has not been used for a long time. - The drum unit may be damaged. Replace the drum unit with a new one. Step 1 2 Cause Check Toner cartridge Are the - Brother International DCP-8085DN | Service Manual - Page 126
with a new one. - Clean the scanner windows of the toner unit with a soft cloth. (Refer to Fig. 3-6.) - The drum unit may be damaged. Replace the drum unit with a new one. Step 1 2 3 Cause Check Main PCB failure Is the problem solved after replacing the main PCB ASSY? Laser unit failure Is - Brother International DCP-8085DN | Service Manual - Page 127
as follows> If you have print quality problems, clean the drum unit as follows: (1) Put the print sample in front of the drum unit, and find the exact position of the poor print. Fig. 3-8 (2) Turn the drum unit gear to the direction of the arrow of the figure by hand while looking at the - Brother International DCP-8085DN | Service Manual - Page 128
might be used. Try to change to freshly unpacked paper. - Toner may be empty. Replace the toner cartridge with a new one. - If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the exposure drum surface. Refer to the previous page, and wipe it off - Brother International DCP-8085DN | Service Manual - Page 129
Toner may be empty. Replace the toner cartridge with a new one. Step 1 2 Cause Check HVPS PCB failure Is the problem solved after replacing the HVPS PCB ASSY? Main PCB failure Is the problem on charged electrode Are the electrodes on the drum unit and machine body dirty? Clean both electrodes - Brother International DCP-8085DN | Service Manual - Page 130
or low humidity may cause this situation to occur. - Check that the appropriate media type or size is selected in the printer driver. - Replace the drum unit with a new one. Step 1 2 Cause Check HVPS PCB failure Is the problem solved after replacing the HVPS PCB ASSY? Main PCB failure Is the - Brother International DCP-8085DN | Service Manual - Page 131
the power on and leave the machine for a few minutes. Step 1 Cause Check Condensation of drum unit by high humidity environment Is the problem solved after setting the drum condensation countermeasure mode to ON? Result Remedy Drum condensation countermeasure mode is set to ON. Yes (Refer to - Brother International DCP-8085DN | Service Manual - Page 132
descriptions on the software setting in the user's guide. - Try resetting the factory settings. (Refer to Users guide.) Step 1 2 3 Cause Check Result Remedy Failure inside the machine Does the machine print "Printer Settings" ? ("4.20 Display of the Machine's Log Information (Function code 80 - Brother International DCP-8085DN | Service Manual - Page 133
> - Check the descriptions in the network user's guide. - Try resetting the factory settings. Step 1 2 Cause Check Wireless LAN PCB failure (MFC-8890DW) Is the problem solved after replacing the wireless LAN PCB ASSY? Main PCB failure Is the problem solved after replacing the main PCB ASSY - Brother International DCP-8085DN | Service Manual - Page 134
8. TROUBLESHOOTING OF THE COMMUNICATIONS ERRORS If a communications error occurs, the facsimile equipment (1) Gives the alarm (intermittent bleep) for approximately four seconds. (2) Indicates the appropriate error message - Brother International DCP-8085DN | Service Manual - Page 135
with or not ready for relay broadcasting function. 32 13 No confidential mail in the remote terminal. The available memory space of the remote terminal is 32 14 less than that required for reception of the confidential or relay broad-casting instruction. 32 18 Remote terminal not equipped - Brother International DCP-8085DN | Service Manual - Page 136
(4) Instructions received from the remote terminal [checking the NSC, DTC, NSS, and DCS] Code 1 ID checking Code 1 63 63 63 Code 2 01 02 03 Causes Password plus "lower 4 digits of telephone number" not coincident. Password not correct. Polling ID not correct. (7) DCN reception Code 1 74 Code - Brother International DCP-8085DN | Service Manual - Page 137
. (5-second time-out) Receive buffer full during operation except receiving into memory. Decoding error continued on 500 lines or more. Decoding error continued for 10 seconds or more. Time-out: 13 seconds or more for one-line transmission. RTC not found or carrier OFF detected for 6 seconds. - Brother International DCP-8085DN | Service Manual - Page 138
pressing the Stop/Exit button after establishment of FAX communication*. Transmission canceled due to a scanning error caused BF 03 by no document or document feed problem in ADF scanning in real time transmission. * Establishment of FAX communication: FAX communication is established when the - Brother International DCP-8085DN | Service Manual - Page 139
9. TROUBLESHOOTING OF THE CONTROL PANEL ■ Nothing is displayed on the LCD. - Verify if the damaged? Replace the harness with a Yes normal one. Is the problem solved after replacing the LCD? Yes Replace the LCD. Is the problem solved after replacing the control panel PCB? Replace - Brother International DCP-8085DN | Service Manual - Page 140
- Check whether the function lock is not set. Step 1 problem solved after replacing the main PCB ASSY? Result Remedy Clean up the panel cover, Yes or remove the burrs from panel cover and panel keys. Reconnect the connector No properly. Replace the harness with a Yes normal one - Brother International DCP-8085DN | Service Manual - Page 141
10. TROUBLESHOOTING OF FAX FUNCTIONS ■ FAX can't send it. - Verify that the telephone cord is securely the harness with a Yes normal one. Contact of rubber Does the rubber key key work correctly? No Replace the rubber Key. NCU PCB Is the problem solved after replacing the NCU PCB - Brother International DCP-8085DN | Service Manual - Page 142
connected properly? Reconnect the connector No properly. Harness between main PCB and control panel PCB Is the harness damaged? Replace the harness with a Yes normal one. Contact of rubber Is the problem solved key after replacing the rubber key? Replace the rubber Key. Yes NCU PCB Is the - Brother International DCP-8085DN | Service Manual - Page 143
the connector No properly. Replace the harness with a Yes normal one. Speaker 5 NCU PCB 6 Main PCB 7 Is the problem solved after replacing the speaker? Is the problem solved after replacing the NCU PCB ASSY? Is the problem solved after replacing the main PCB ASSY? Replace the Speaker. Yes - Brother International DCP-8085DN | Service Manual - Page 144
. Replace the harness with a Yes normal one. NCU PCB 7 Main PCB 8 Is the problem solved after replacing the NCU PCB ASSY? Is the problem solved after replacing the main PCB ASSY? Replace the NCU PCB Yes ASSY. Replace the main PCB Yes ASSY. ■ Dialing function does not switch between "tone" and - Brother International DCP-8085DN | Service Manual - Page 145
solved after replacing the ADF relay PCB? Replace the ADF relay Yes PCB. Driver PCB failure Is the problem solved after replacing the driver PCB? Replace the driver PCB. Yes ADF motor failure Is the problem solved after replacing the ADF motor? Replace the ADF motor. Yes Main PCB failure - Brother International DCP-8085DN | Service Manual - Page 146
11.2 Double Feeding - Check whether the document does not use the paper which is thinner than the specification. Step 1 2 Cause Check Feed roller holder Is the surface of the ASSY failure separation roller worn out? Separation rubber Is the surface of the is abrasion - Brother International DCP-8085DN | Service Manual - Page 147
■ Paper jam in the ADF - Check whether length does not use paper equal to or less than 148 mm. Step 1 2 3 4 5 6 Cause Check Result Remedy Foreign object inside ADF Is there a foreign object inside ADF? Yes Remove the foreign object. Document rear Does the document rear Re- - Brother International DCP-8085DN | Service Manual - Page 148
■ Paper jam at the duplex scanning - Use the A4 or Letter size. - Use the document Check> - Check if the document is loaded into the ADF correctly. - Check whether the document guide matches the document size. - Check whether the document does not curl. Step 1 Cause Check Feed - Brother International DCP-8085DN | Service Manual - Page 149
12. SCANNING IMAGE DEFECT TROUBLESHOOTING 12.1 Image Defect Examples Light Faulty registration Dark Completely blank Vertical streaks Fig. 3-11 White vertical streaks 12.2 Troubleshooting Image Defect Image defect related problems are end user recoverable if following the User Check items. If - Brother International DCP-8085DN | Service Manual - Page 150
Cause Check Result Remedy Fine adjustment Is the problem solved by Perform the fine of scan start performing the fine adjustment of scan start 1 position adjustment of scan start Yes position. misalignment position. (Function code 54) (Function code 54) 2 CCD unit failure Is the - Brother International DCP-8085DN | Service Manual - Page 151
CCD unit failure ADF or document glass failure Check Result Remedy Is the problem solved by replacing the CCD unit. Yes Replace the CCD unit. Is the problem solved by Replace the scanner unit. replacing the scanner Yes unit. ■ White vertical streaks - Check if the ADF glass or - Brother International DCP-8085DN | Service Manual - Page 152
the PS PCB unit. Yes Main PCB 5 Is the problem solved after replacing the main PCB ASSY? Replace the main PCB Yes ASSY. ■ The fan does not work. (Verify the position of each fan referring to "4.19 Operational Check of Fans (Function code 78)" in Chapter 7.) Step 1 2 Cause Harness connection - Brother International DCP-8085DN | Service Manual - Page 153
damaged Replace the drum unit. Main PCB failure Replace the main PCB ASSY. Toner sensor PCB (TE/NEW) failure Replace the toner sensor PCB ASSY (TE/ NEW) of the appropriate color. ■ Printing from Macintosh applications fails. - Check that the printer driver which, is supplied - Brother International DCP-8085DN | Service Manual - Page 154
CHAPTER 4 PERIODIC MAINTENANCE Confidential - Brother International DCP-8085DN | Service Manual - Page 155
4 PERIODIC MAINTENANCE CONTENTS 1. PERIODIC MAINTENANCE PARTS 4-1 1.1 Periodical Replacement Parts 4-2 1.2 Procedures to Replace Periodical Replacement Parts 4-3 1.2.1 Fuser unit and laser unit 4-3 1.2.2 Paper feeding kit for tray 1, 2 4-30 1.2.3 Paper feeding kit for MP tray 4-36 Confidential - Brother International DCP-8085DN | Service Manual - Page 156
1. PERIODIC MAINTENANCE PARTS To avoid creating secondary problems by mishandling, follow the warnings below during maintenance work. WARNING • Always turn off the power switch and unplug the power cord from the power outlet - Brother International DCP-8085DN | Service Manual - Page 157
product quality greatly if they lost their function even if they do not appear be replaced at the service center referring to the service life. Parts Name Fuser Unit Laser Unit PF kit for : • Always turn off the power switch of the printer and unplug the power cord from the power outlet before - Brother International DCP-8085DN | Service Manual - Page 158
Procedures to Replace Periodical Replacement Parts 1.2.1 Fuser unit and laser unit Check that the following before entering the procedures. • Make sure that the AC cord is disconnected from the printer. • Make sure that the Drum/toner ASSY is removed. • Make sure that the DX - Brother International DCP-8085DN | Service Manual - Page 159
(3) Remove the Arms of the Back cover from the Pins. (4) Remove the Back cover. Pin Arm Pin Back cover Arm Fig. 4-2 (5) Hold the Knobs on the Rear chute ASSY and pull down this to your side. (6) Remove the Arms of the Rear chute ASSY from the Pins. (7) Remove the Rear chute ASSY. Pin 6 5 7 Pin - Brother International DCP-8085DN | Service Manual - Page 160
(8) Remove the pan B M4x20 Taptite screw. Release the Hooks in the order of 8a, 8b and 8c. Remove the FU harness cover 1. 8c 8a 8b Taptite pan B M4x20 Hooks Fig. 4-4 FU harness cover 1 (9) Disconnect the connector of the Heater terminal while pressing the Hook of the connector of the Fuser unit - Brother International DCP-8085DN | Service Manual - Page 161
the FU harness cover 2 to the direction of 10a while pressing the Hook and pull out the FU harness cover 2 from the back of the printer. 31a0a 130bb FU harness cover 2 Hook Fig. 4-6 (11) Disconnect the connectors of the Thermistor ASSY M and Thermistor ASSY S from the Relay rear PCB ASSY, and - Brother International DCP-8085DN | Service Manual - Page 162
(12) Remove the pan B M4x20 Taptite screw to remove the Fuser unit. Taptite pan B M4x20 Fuser unit Fig. 4-8 (13) Open the Front cover, remove the two bind B M4x12 Taptite screws, and then remove the Side cover L by releasing the Hooks in the order of 13a to 13d. Taptite bind B M4x12 Hook 13d Side - Brother International DCP-8085DN | Service Manual - Page 163
(14) Remove the four cup S M3x6 SR Taptite screws to remove the Shield cover ASSY and the two FG harnesses. Taptite cup S M3x6 SR FG harness Seal Shield cover ASSY Taptite cup S M3x6 SR FG harness Fig. 4-10 (15) Remove the two bind B M4x12 Taptite screws, and then remove the Side cover R by - Brother International DCP-8085DN | Service Manual - Page 164
the cup S M3x6 Taptite screw, remove the ADF FG harness and FB FG harness. (17) Disconnect the Connector from the Driver PCB. (18) Disconnect the two Connectors from the Main PCB. Driver PCB Connector (ADF motor harness) ADF FG harness FB FG harness Taptite cup S M3x6 Connectors (ADF relay harness - Brother International DCP-8085DN | Service Manual - Page 165
PCB Scanner motor harness Driver PCB FFC cable Photo interrupter Main PCB Main PCB Fig. 4-13 (21) Disconnect the six connectors of the each harness from the Main PCB. Driver PCB NCU harness Battery harness Speaker harness Driver harness Main PCB Panel PCB harness USB HOST harness ASSY Fig - Brother International DCP-8085DN | Service Manual - Page 166
Taptite, bind B M4x12 Taptite, bind B M4x12 Fig. 4-15 (23) Remove the two cup B M4x20 Taptite screws. Lift up the rear of the Scanner unit slightly and remove the Scanner unit. Taptite cup B M4x20 Taptite cup B M4x20 Scanner unit 23a Hook 23b Fig. 4-16 Hook 4-11 Confidential - Brother International DCP-8085DN | Service Manual - Page 167
Screw pan (S/P washer) M3.5x6 of the NCU FG harness ASSY. Screw, pan (S/P washer) M3.5X6 NCU FG harness ASSY NCU unit Joint cover ASSY Driver PCB shield Taptite cup S M3x6 SR Fig. 4-17 (25) Remove the four bind B M4x12 Taptite screws from the Joint cover. (26) Release all Hooks of - Brother International DCP-8085DN | Service Manual - Page 168
(28) Disconnect the harness of the wireless PCB ASSY. (29) Slide the Sub duct to the direction of 29b while pressing the Hook to the direction of 29a and remove the Sub duct from the Air duct. Air duct Wireless PCB harness 28 29b 29c Hooks 29a Sub duct Hook Fig. 4-19 (30) Remove - Brother International DCP-8085DN | Service Manual - Page 169
(31) Remove the Pin of the Air duct from the frame. Slide the Air duct to the direction of 31b and remove the Air duct. Pin 31a Laser unit Hook 31b Hook Air duct Hook Hook Fig. 4-21 4-14 Confidential - Brother International DCP-8085DN | Service Manual - Page 170
not to lose the Protective film attached on the flat cable. • Do not touch the Laser scanner window directly. LD harness (Flat cable) Core Laser unit Main PCB Polygon motor (Flat cable) Protective film Laser unit Taptite cup S M3x6 Fig. 4-22 Main PCB LD harness (Flat cable) Taptite cup - Brother International DCP-8085DN | Service Manual - Page 171
flat cable(s), do not insert them at an angle. After insertion, check that the cables are not at an angle. Laser unit Taptite cup S M3x6 LD harness (Flat cable) Core Laser unit LD harness (Flat cable) Taptite cup S M3x6 Core Protective film Polygon motor (Flat cable) Main PCB Polygon motor - Brother International DCP-8085DN | Service Manual - Page 172
(5) Install the Air duct into the Laser unit. Laser unit Air duct Fig. 4-24 (6) Install the Filter into the Air duct. Filter Air duct Fig. 4-25 4-17 Confidential - Brother International DCP-8085DN | Service Manual - Page 173
(7) Install the Sub duct into the Air duct. (8) Connect the harness of the wireless PCB ASSY. Air duct 8 Wireless PCB harness 7b 7a Hooks Sub duct Fig. 4-26 (9) Secure the Joint cover with the four bind B M4x12 Taptite screws. 9a Hooks Hook Taptite bind B M4x12 Joint cover 5 9b - Brother International DCP-8085DN | Service Manual - Page 174
. Screw, pan (S/P washer) M3.5X6 NCU FG harness ASSY NCU unit Joint cover ASSY Driver PCB shield Taptite cup S M3x6 SR Fig. 4-28 (12) Catch the Hooks of the Scanner unit into the Joint cover and secure the Scanner unit with the two cup B M4x20 Taptite screws. Taptite cup B M4x20 Taptite cup - Brother International DCP-8085DN | Service Manual - Page 175
with the two bind B M4x12 Taptite screws. Document scanner Taptite, bind B M4x12 Taptite, bind B M4x12 Fig. 4-30 (14) Connect the two Connectors into the Main PCB. (15) Connect the Connector into Driver PCB. (16) Secure the ADF FG harness and FB FG harness with the cup S M3x6 Taptite - Brother International DCP-8085DN | Service Manual - Page 176
motor harness into the Driver PCB. Driver PCB Scanner motor harness Driver PCB FFC cable Photo interrupter Main PCB Main PCB Fig. 4-32 (19) Connect the six connectors of the each harness into the Main PCB. Driver PCB NCU harness Battery harness Speaker harness Driver harness Main PCB Panel - Brother International DCP-8085DN | Service Manual - Page 177
(20) Catch the Hooks in the order of the arrows and secure the Side cover R with the two bind B M4x12 Taptite screws. Taptite bind B M4x12 Hook Side cover R 20a 20d Taptite bind B M4x12 Hook 20b Hooks Fig. 4-34 Hooks 20c (21) Secure the Shield cover ASSY and two FG harnesses with the four - Brother International DCP-8085DN | Service Manual - Page 178
(22) Catch the Hooks in the order of the arrows and secure the Side cover L with the two bind B M4x12 Taptite screws. Taptite bind B M4x12 Hook 22d 22a Side cover L Hooks 22b 22c Fig. 4-36 Hooks Front cover Taptite bind B M4x12 4-23 Confidential - Brother International DCP-8085DN | Service Manual - Page 179
is shipped with its pressure roller at low nip pressure. Before installing the fuser unit, turn back the levers to the normal position by following instructions below. (1) Put the fuser unit on a flat, horizontal surface. Pull up each of the black tab (a) on the right side and left side - Brother International DCP-8085DN | Service Manual - Page 180
(23) Secure the Fuser unit with the pan B M4x20 Taptite screw. Taptite pan B M4x20 Fuser unit Fig. 4-37 4-25 Confidential - Brother International DCP-8085DN | Service Manual - Page 181
(24) Connect the connectors of the Thermistor ASSY M and Thermistor ASSY S onto the Relay rear PCB ASSY. Hook Thermistor ASSY M Fuser unit Hook Relay rear PCB ASSY Thermistor ASSY S Relay rear PCB ASSY Fig. 4-38 (25) Install the FU harness cover 2. 32a5b 235ba FU harness cover 2 Hook Fig. 4-39 - Brother International DCP-8085DN | Service Manual - Page 182
(26) Install the Heater terminal. Hook Heater terminal Fuser unit Frame R Fig. 4-40 (27) Secure the FU harness cover 1 with the pan B M4x20 Taptite screw. 27a 27b Taptite pan B M4x20 Hooks Fig. 4-41 FU harness cover 1 Note : • Do not sandwich the harness of the heater terminal by the FU - Brother International DCP-8085DN | Service Manual - Page 183
(28) Catch the Arm of the Rear chute ASSY onto the Pin of the machine body and install the Rear chute ASSY. Pin 28c 28a Pin Rear chute ASSY 28b Fig. 4-42 (29) Catch the Arm of the Back cover onto the Pin of the machine body and install the Back cover. Pin 29b Arm 29a Pin Back cover Arm Fig. 4-43 - Brother International DCP-8085DN | Service Manual - Page 184
after assembling. • Set the DX feed ASSY or DX blank cover. • Install the Drum/toner ASSY into the Printer. • Put the Paper into the Paper tray. • Reset the count of the Fuser unit and Laser unit after part replacement. (Refer to "5.1 Resetting the Periodical Replacement Parts Life" in Chapter7 - Brother International DCP-8085DN | Service Manual - Page 185
tray 1, 2 < Uninstalling Procedure > Check that the following before entering the procedures. • Make sure that the AC cord is disconnected from the printer. • Make sure that the Drum/toner ASSY is removed. • Make sure that the DX feed ASSY or DX blank cover is removed. • Make sure that the Paper is - Brother International DCP-8085DN | Service Manual - Page 186
(5) Turn the Printer upside down. Note : • Pull out and put into the paper tray so that the Roller holder ASSY is lowered. • If the Roller holder ASSY is - Brother International DCP-8085DN | Service Manual - Page 187
(7) Slide the Roller holder ASSY to the direction of the arrow 7a. Then, lift up the gear side of the Roller holder ASSY to the direction of the arrow 7b and pull it out to the direction of the arrow 7c to remove. Roller holder ASSY 7c 7b 7a Paper feed frame Fig. 4-47 4-32 Confidential - Brother International DCP-8085DN | Service Manual - Page 188
< Installing Procedure > (1) Install the Roller holder ASSY. Note : • When assembling the roller holder ASSY, align the section "A" on the shaft of the roller holder ASSY with the hole on the paper feed frame. Roller holder ASSY "A" 1a 1b Paper feed frame 1c Fig. 4-48 4-33 Confidential - Brother International DCP-8085DN | Service Manual - Page 189
(2) Assemble the Lift arm onto the Pin of the Roller holder ASSY. (3) Place the Printer on its base. Lift arm Pin Roller holder ASSY Paper feed frame 2a 2b Fig. 4-49 (4) Install the DX feed ASSY or DX blank cover, and install the Drum/toner ASSY. 4-34 Confidential - Brother International DCP-8085DN | Service Manual - Page 190
spring is assembled correctly. Hooks Separation pad spring Hook 6b Separation pad ASSY 6b Hook 6a 6c Fig. 4-50 (7) Put the Paper tray into the Printer. * Reset the count of the PF Kit after part replacement. Paper tray 4-35 Confidential - Brother International DCP-8085DN | Service Manual - Page 191
tray < Uninstalling Procedure > Check that the following before entering the procedures. • Make sure that the AC cord is disconnected from the printer. • Make sure that the Drum/toner ASSY is removed. (1) Open the MP feed frame cover. MP feed frame cover MP feed frame Front cover Fig. 4-51 4-36 - Brother International DCP-8085DN | Service Manual - Page 192
(2) Remove the Holder bearing MP. Holder bearing MP Hook 2c 2a 2b MP feed frame Fig. 4-52 (3) Lift up the Lift arm MP to release it from the Pin of the MP roller holder ASSY. (4) Slide the MP roller holder ASSY to the direction of the arrow 4a and put it up to remove. Pin MP roller holder ASSY - Brother International DCP-8085DN | Service Manual - Page 193
(5) Turn the back side of the Separation pad ASSY MP to the direction of the arrow 5a and put it up to remove. Separation pad ASSY MP MP feed frame 5b 5a Fig. 4-54 MP frame 4-38 Confidential - Brother International DCP-8085DN | Service Manual - Page 194
< Installing Procedure > (1) Put the Hook of the Separation pad ASSY MP into the MP feed frame and pull down the Separation pad ASSY MP to the direction of the arrow 1b until it is locked. Separation pad ASSY MP MP feed frame 1a 1b MP frame Fig. 4-55 (2) Lift up the Lift arm MP and put the MP roller - Brother International DCP-8085DN | Service Manual - Page 195
3b Fig. 4-57 (4) Close the MP feed frame cover. MP feed frame cover MP feed frame MP feed frame Front cover Fig. 4-58 (5) Install the Drum/toner ASSY into the Printer. (6) Close the Front cover. * Reset the count of the PF Kit MP after part replacement. 4-40 Confidential - Brother International DCP-8085DN | Service Manual - Page 196
CHAPTER 5 DISASSEMBLY/REASSEMBLY - Brother International DCP-8085DN | Service Manual - Page 197
a glance the quickest way to get to component(s) involved. At the start of a disassembly job, you check the disassembly order flow that guides you through a shortcut to the object components. This chapter also covers screw tightening torques and lubrication points to which the specified lubricants - Brother International DCP-8085DN | Service Manual - Page 198
Cover Sensor 5-78 9.43 Eject Roller B4 5-79 9.44 Presser Roller ...5-80 9.45 Panel Cover ASSY 5-81 9.46 Scanner Unit ASSY 5-82 9.47 Top Cover ASSY 5-83 9.48 Lock Lever B/ Lock Lever ASSY 5-84 9.49 CCD Module with the NCU only 5-94 9.59 Speaker ASSY 5-96 9.60 Driver PCB ...5-97 Confidential - Brother International DCP-8085DN | Service Manual - Page 199
Register Solenoid ASSY 5-117 9.74 Ejector Solenoid ASSY 5-117 9.75 Interlock SW ASSY 5-118 9.76 New Toner Actuator 5-118 9.77 Gear 17/20/23 5-119 9.78 Thermistor ASSY 5-121 9.79 Filter ...5-122 9.80 Laser Unit...5-123 9.81 PS PCB Unit ...5-124 9.82 High-Voltage PS PCB ASSY 5-128 9.83 Wireless - Brother International DCP-8085DN | Service Manual - Page 200
10.8 Connector: 54702-1219 5-159 10.9 Gear 24 LT ...5-160 10.10 Collar 6...5-161 10.11 LT Solenoid ASSY 5-165 10.12 Roller Holder ASSY 5-165 10.13 Edge Actuator Spring 5-166 10.14 PE Actuator , Edge Actuator 5-167 10.15 LT Sensor PCB ASSY 5-168 Confidential - Brother International DCP-8085DN | Service Manual - Page 201
1. SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, follow the warnings and only the repaired portion but also all connectors. Also check that other related portions are functioning properly before operational checks. • After disconnecting flat cables, check that each cable is - Brother International DCP-8085DN | Service Manual - Page 202
in the machine. To prevent such data loss, the service personnel should instruct end users (e.g., by telephone) to transfer data to the following procedure more than one time. ■ Operating Procedure (1) Connect the machine to be repaired (that has received data in the memory) to the telephone line. - Brother International DCP-8085DN | Service Manual - Page 203
number of the receiver machine and press the [OK] button again. Note: • Be sure to type the telephone number with the numerical keys. No one-touch dialing is allowed in this procedure. The machine displays the "ACCEPTED" for approx. two seconds and starts dialing to transfer data. The machine - Brother International DCP-8085DN | Service Manual - Page 204
3. PACKING Accessory bag Option carton AC power cord USB cable Pad Pad Panel Cover Bag ASSY Manual Telephotne Line Cord ASSY Pad Drum/toner ASSY Pad Machine Fig. 5-1 Carton 5-4 Confidential - Brother International DCP-8085DN | Service Manual - Page 205
plate Paper feed chute ASSY Separation rubber Drive frame sub ASSY DX Front frame Upper main chute ASSY Rear sensor cover LF spring Scanner unit Scanner top cover ASSY Lock lever B Lock lever A Screw type Taptite pan B M4x20 Taptite pan B M4x20 Taptite cup B M4x10 Taptite cup B M3x10 Taptite bind - Brother International DCP-8085DN | Service Manual - Page 206
spring Driver PCB shield USB HOST FG harness ASSY USB PCB holder USB HOST PCB Side cover R Joint cover ASSY Main PCB Gear plate calking ASSY Main motor ASSY Plate Main shield plate ASSY MP solenoid ASSY Spring T1 solenoid ASSY Register solenoid ASSY Ejector solenoid ASSY New toner actuator Laser - Brother International DCP-8085DN | Service Manual - Page 207
Location of screw Screw type Safety louver Base plate HV HV insulation sheet High-voltage PS PCB ASSY Toner LED PCB unit ASSY Frame L Under bar MP feed frame MP PE sensor ASSY MP frame PE EG sensor ASSY LT front cover LT rear - Brother International DCP-8085DN | Service Manual - Page 208
The kind of the lubricating oil (Maker name) BG-MU (Kanto Kasei) EM-D110 (MOLYKOTE) Lubrication point Dev gear 37R joint drive Main motor ASSY Drum gear 82R Separation pad Quantity of labrication 2mm dia. ball BG2 2mm dia. ball EM2 Gear 82R Apply grease on the cogs of the motor - Brother International DCP-8085DN | Service Manual - Page 209
Separation pad ASSY EM-2 4 places BG2: MOLYKOTE EM-D110 (2 mm ball) Fig. 5-3 5-9 Confidential - Brother International DCP-8085DN | Service Manual - Page 210
6. GEAR LAYOUT DRAWING LM5016001 EJECTOR GEAR 16 LM5013001 EJECT GEAR 28 SECTOR LM5015001 EJECTOR SWITCH ARM LM5016001 LM5053001 LM5052001 REGISTER REGISTER GEAR 21 CENTER GEAR 48 CARRIER LM5055001 REGISTER LM5101001 GEAR 23 LM5461001 REGISTER EJECTOR GEAR 159/43 DIFFERENTIAL GEAR 16 - Brother International DCP-8085DN | Service Manual - Page 211
7. HARNESS ROUTING 1 MP PE sensor ASSY Hook "A" Printer top side (Printer body upside down) Hook "B" Hole MP feed frame Hook "A" MP PE sensor ASSY MP feed frame High-voltage PS PCB ASSY 5-11 Confidential - Brother International DCP-8085DN | Service Manual - Page 212
2 PE EG sensor ASSY Hole "A" Hook "B" PE EG sensor ASSY Printer top side (Printer body upside down) Hook "B" Hole "A" Paper feed frame PE EG sensor ASSY Paper Feed frame Hook "A" High-voltage PS PCB ASSY 3 Interlock SW ASSY Relay - Brother International DCP-8085DN | Service Manual - Page 213
4 Toner sensor PCB unit ASSY Relay front PCB ASSY Hooks Pin Frame L Hook Pin Hook Toner sensor PCB unit ASSY 5 Regist solenoid ASSY Hook Relay front PCB ASSY Hooks Pin Frame L Hook Hook Pin Hook Register solenoid ASSY Hook Hook 5-13 Confidential - Brother International DCP-8085DN | Service Manual - Page 214
6 MP solenoid ASSY Relay front PCB ASSY Hooks Pin Frame L Pin Hook 7 T1 solenoid ASSY MP solenoid ASSY Relay front PCB ASSY Pin Pin Hook Hooks Hooks Frame L Hooks T1 solenoid ASSY 5-14 Confidential - Brother International DCP-8085DN | Service Manual - Page 215
8 Relay front PCB ASSY Frame L Hook Relay front PCB ASSY Main PCB 9 Laser unit Frame L Hole Core Laser unit LD harness (Flat cable) Main PCB Hook Protective film Polygon motor (Flat cable) Gear cover 5-15 Confidential - Brother International DCP-8085DN | Service Manual - Page 216
10 Fan motor 60 unit Frame R Hooks Fan motor 60 unit Toner LED PCB unit ASSY 11 Fan motor 60 unit LV Frame R Toner LED PCB unit ASSY Hooks Hook Hook Hook Fan motor 60 unit LV 5-16 Confidential - Brother International DCP-8085DN | Service Manual - Page 217
12 Toner LED PCB unit ASSY Frame R Hooks Toner LED PCB unit ASSY Hook Hook Hook Hole High-voltage PS PCB ASSY Hooks Hole 5-17 Printer top side (Printer body upside down) Confidential - Brother International DCP-8085DN | Service Manual - Page 218
13 PS PCB unit Printer top side (Printer body upside down) Base plate LV PS PCB unit terminal PS PCB unit Hook SW holder ASSY Power supply switch 14 FG harness FG - Brother International DCP-8085DN | Service Manual - Page 219
ADF Relay harness ADF Relay PCB ADF motor ADF harness Hole "B" Document cover sensor harness Document cover sensor harness ADF unit Hole "B" ADF harness Hole Scanner unit ADF motor harness ADF FG harness Document cover sensor harness ADF Relay harness Main PCB Drive PCB 5-19 Confidential - Brother International DCP-8085DN | Service Manual - Page 220
16 ADF unit (Document front sensor 1, Document front sensor 2) Motor frame ASSY Hook Hole "C" Hooks Document front sensor 2 Document front sensor 1 ADF Relay PCB Hole "C" Document front sensor 1 Hole Motor frame ASSY Paper feed chute ASSY ADF Relay PCB Drive frame sub - Brother International DCP-8085DN | Service Manual - Page 221
17 ADF unit (Document rear sensor, Switch back sensor) Switch back sensor Document rear sensor ADF Relay PCB Switch back sensor Switch back sensor harness Actuator SB Hook Hook ADF Relay PCB Switch back sensor harness Document rear sensor harness Hooks Actuator R - Brother International DCP-8085DN | Service Manual - Page 222
(CCD module, HP sensor) Drive plate ASSY Hook Pin Lib Scanner unit FFC plate HP sensor CCD module Drive plate ASSY HP sensor HP sensor harness Hole FFC cable Main PCB 20 Scanner unit (Scanner motor, FB FG harness) Scanner motor FB Scanner unit Drive plate ASSY FB FG harness Hole Drive PCB - Brother International DCP-8085DN | Service Manual - Page 223
21 Panel unit Hook Tape Hole Panel PCB harness Main PCB 22 Speaker ASSY Hook Joint cover ASSY Hook Panel unit generic Panel PCB Panel rear cover Panel PCB harness Speaker ASSY Hole Main PCB 5-23 Confidential - Brother International DCP-8085DN | Service Manual - Page 224
harness NCU unit Joint cover ASSY NCU FG harness Frame L NCU harness Hole Main PCB 24 Fuser unit LVPS PCB unit Hole Base plate LV Printer top side (Printer body upside down) Thermistor ASSY M Hooks Fuser unit Thermistor ASSY S Relay rear PCB ASSY Heater terminal 5-24 Confidential - Brother International DCP-8085DN | Service Manual - Page 225
25 Relay rear PCB ASSY, Ejector solenoid (For the models with the DX only) DX tray sensor Main shield plate ASSY Ejector solenoid Frame L Main PCB sheet Main PCB Insulation sheet 26 PS PCB unit, High-voltage PS PCB ASSY Relay rear PCB ASSY Main PCB sheet Insulation sheet Frame L LVPS PCB - Brother International DCP-8085DN | Service Manual - Page 226
27 Main motor ASSY, Thermistor ASSY, LT connector Frame L Thermistor ASSY LT connector Main PCB Thermistor ASSY Main motor ASSY 5-26 Confidential - Brother International DCP-8085DN | Service Manual - Page 227
28 Driver PCB, Battery Battery harness Joint cover ASSY Drive PCB Driver harness Battery Hole Main PCB 29 Wireless PCB (PCB T60H929.00 ASSY 02) Air duct Hook Frame R Hook Hook LD harness Wireless PCB harness Hole - Brother International DCP-8085DN | Service Manual - Page 228
30 USB HOST PCB Joint cover ASSY USB HOST harness ASSY Hooks Hole Main PCB USB HOST PCB USB PCB holder 5-28 Confidential - Brother International DCP-8085DN | Service Manual - Page 229
FLOW CHART Basic Operation 5s / 5s 5s / 5s AC Cord Drum/ Toner ASSY Disassembly / Re-Assembly (sec.) 5s / 5s DX Feed Roller Holder Panel PCB ASSY (HL-5380DN) 8.25 10s / 15s 8.26 40s / 40s Filter Laser Unit 8.27 70s / 70s PS PCB Unit 8.28 40s / 40s High-Voltage PS PCB ASSY - Brother International DCP-8085DN | Service Manual - Page 230
with the disassembly procedure, (1) Unplug • the AC cord, • the USB cable, if connected, • the LAN cable, if connected. (2) Remove • the Paper tray, • the Toner cartridge and Drum unit, • the DX unit. AC cord DX unit USB I/F cable Drum/toner ASSY LAN cable Paper tray Fig. 5-5 5-30 Confidential - Brother International DCP-8085DN | Service Manual - Page 231
9.1 Paper Tray (1) Pull up the back side of the Separation pad ASSY. (2) Push the Hooks provided on both sides of the Separation pad ASSY inwards. (3) Pull up the Separation pad ASSY. Hooks Hook 2 Separation pad ASSY 2 Hook 3 1 Fig. 5-6 Paper tray 5-31 Confidential - Brother International DCP-8085DN | Service Manual - Page 232
(4) Remove the Separation pad spring. Separation pad spring Paper tray Fig. 5-7 (5) Push the hook of the lift gear 46 while pushing up the plate up plate, and remove the Lift gear 46. Plate up plate Plate up plate Lift gear 46 Hook Lift gear 46 Hook Fig. 5-8 5-32 Paper tray Confidential - Brother International DCP-8085DN | Service Manual - Page 233
(6) Remove the Gear 21-16. Gear 21-16 (7) Remove the Gear 15. Fig. 5-9 Paper tray Gear 15 Fig. 5-10 Paper tray 5-33 Confidential - Brother International DCP-8085DN | Service Manual - Page 234
9.2 Back Cover (1) Open the Back cover. (2) Remove the Pins of the Outer chute from the Back cover. Pin Back cover Outer chute Pin Back cover Fig. 5-11 5-34 Confidential - Brother International DCP-8085DN | Service Manual - Page 235
(3) Remove the Arm of the Back cover from the Pin. (4) Remove the Back cover. Pin Arm Pin Back cover Arm Fig. 5-12 5-35 Confidential - Brother International DCP-8085DN | Service Manual - Page 236
9.3 Rear Chute ASSY (1) Hold the Knobs on the Rear chute ASSY and pull down this to your side. (2) Remove the Arms of the Rear chute ASSY from the Pins. (3) Remove the Rear chute ASSY. Pin Pin 1 Knob 3 2 1 1 Rear chute ASSY Knob Fig. 5-13 (4) Remove the Arm of the Outer chute from the Pin of - Brother International DCP-8085DN | Service Manual - Page 237
(5) Push the Hook of the Rear chute (indicated by the arrow 5a), and move the Eject actuator to the direction of 5b. (6) Lift up the Eject actuator to remove. (7) Remove the Eject actuator spring. Eject actuator spring Rib Eject actuator 7 6 5b 5a Rear chute Hook Fig. 5-15 Assembling Note: • - Brother International DCP-8085DN | Service Manual - Page 238
9.4 Fuser Unit (1) Remove the pan B M4x20 Taptite screw. Release the Hooks in the order of 1a, 1b and 1c. Remove the FU harness cover 1. 1c 1a 1b Taptite, pan B M4x20 Hooks Fig. 5-17 FU harness cover 1 (2) Disconnect the connector of the Heater terminal while pressing the Hook of the connector - Brother International DCP-8085DN | Service Manual - Page 239
the FU harness cover 2 to the direction of 3a while pressing the Hook and pull out the FU harness cover 2 from the back of the printer. 33aa 3b FU harness cover 2 Hook Fig. 5-19 (4) Disconnect the connectors of the Thermistor ASSY M and Thermistor ASSY S from the Relay rear PCB ASSY, and - Brother International DCP-8085DN | Service Manual - Page 240
CAUTION • DO NOT subject the fuser unit to strong physical shocks or vibrations. • DO NOT touch the rollers and the electrodes to prevent damage to the fuser unit In the following figures. (5) Remove the pan B M4x20 Taptite screw, and then remove Fuser unit. Taptite, pan B M4x20 Fuser unit Fig. 5-21 - Brother International DCP-8085DN | Service Manual - Page 241
shipped with its pressure roller at low nip pressure. Before installing the fuser unit, turn back the levers to the normal position by following instructions below. (1) Put the fuser unit on a flat, horizontal surface. Pull up each of the black tab (a) on the right side and left side. (a) (b) Fig - Brother International DCP-8085DN | Service Manual - Page 242
9.5 Tray MP ASSY (1) Open the MP tray cover ASSY. (2) Release the Pins of the Tray MP ASSY from the MP tray cover ASSY. (3) Remove the Tray MP ASSY. Process cover ASSY Pin Pin 2 3 1 2 Tray MP ASSY Fig. 5-24 MP tray cover ASSY 5-42 Confidential - Brother International DCP-8085DN | Service Manual - Page 243
9.6 MP Tray Cover ASSY/Process Cover ASSY/Emblem cover (1) Push the front cover release button. (2) Open Process cover ASSY. (3) Release the Hook to remove the Process cover stopper. 1 Front cover release button 2 Drive release link 3 Hook Process cover ASSY MP tray cover ASSY Process cover - Brother International DCP-8085DN | Service Manual - Page 244
(6) Remove the cup B M4x10 Taptite screw, and then remove the Process cover stopper. Process cover Process cover stopper Taptite, cup B M4x10 Fig. 5-28 (7) Remove the Support flap 1 from the Process cover. Support flap 1 Process cover Fig. 5-29 5-44 Confidential - Brother International DCP-8085DN | Service Manual - Page 245
(8) Remove the Hook of the right side, and then remove the MP tray extention from the MP tray cover ASSY. Hook MP tray extention MP tray cover ASSY Fig. 5-30 (9) Remove the two bind B M3x10 Taptite screws, and then remove the Emblem cover from the MP tray cover. Emblem cover Taptite, bind B - Brother International DCP-8085DN | Service Manual - Page 246
9.7 Access Cover/Side Cover L (1) Remove the Access cover. Access cover Fig. 5-32 (2) Remove the two bind B M4x12 Taptite screws, and then remove the Side cover L by releasing the Hooks from 2a to 2d. Taptite, bind B M4x12 Hooks 2d Side cover L 2a Hooks 2c 2b Fig. 5-33 Taptite, bind B M4x12 - Brother International DCP-8085DN | Service Manual - Page 247
harness Fig. 5-34 (2) Remove the cup S M3x6 Taptite screw, remove the ADF FG harness and FB FG harness. (3) Disconnect the Connector from the Driver PCB. (4) Disconnect the two Connectors from the Main PCB. Connector (ADF motor harness) ADF FG harness FB FG harness Taptite cup S M3x6 - Brother International DCP-8085DN | Service Manual - Page 248
(5) Remove the two bind B M4x12 Taptite screws, and then remove the Document cover LGL. 5a Document cover LGL 5b Taptite, bind B M4x12 Taptite, bind B M4x12 Fig. 5-36 9.9 Hinge Arm R (1) Turn the Document cover LGL upside down. Remove the Hinge arm R from the Hinge base R. - Brother International DCP-8085DN | Service Manual - Page 249
9.10 Hinge Base R (1) Remove the three cup B M3x10 Taptite screws, and then remove the Hinge base R. Taptite cup B M3x10 Hinge base R Document cover LGL Fig. 5-38 9.11 Hinge ASSY L (1) Remove the two cup B M3x10 Taptite screws and the cup S M3x12 Taptite screw, and then remove the - Brother International DCP-8085DN | Service Manual - Page 250
9.12 ADF Cover ASSY (1) Turn the Document cover upside down. Remove the ADF cover ASSY from the ADF unit. ADF cover ASSY Fig. 5-40 ADF unit 9.13 ADF Side Cover F (1) Push the Hook from underneath the ADF unit to release the Latch, and remove the cup S M3x8 Taptite screw and cup B - Brother International DCP-8085DN | Service Manual - Page 251
9.14 ADF Side Cover R (1) Remove the cup B M3x10 Taptite screw. (2) Release the Hook from underneath the ADF unit, and remove the ADF side cover R from the ADF unit. ADF side cover R 2 1 Hook Hook Latch Fig. 5-42 Taptite cup B M3x10 Hook ADF unit 5-51 Confidential - Brother International DCP-8085DN | Service Manual - Page 252
9.15 ADF Chute ASSY (1) Disconnect the 7 connectors (for the model supporting the DX tray only) or 3 connectors (for the model supporting no DX tray only) from the ADF relay PCB. (2) Disconnect the connector of the ADF motor harness from the ADF motor. (3) Remove the cup S M3x8 - Brother International DCP-8085DN | Service Manual - Page 253
(5) Turn the Document cover LGL the correct way up and remove the four cup B M3x10 Taptite screws from the ADF chute ASSY. (6) Release the hook to remove the ADF chute ASSY from the Document cover LGL. Taptite cup B M3x10 Taptite cup B M3x10 Hook ADF chute ASSY Taptite cup B M3x10 Taptite cup B - Brother International DCP-8085DN | Service Manual - Page 254
9.16 SB Chute ASSY (For the models with the DX only) / SX Chute (For the models with out the DX only) (1) Remove the two cup S M3x8 Taptite screws. (2) Remove the SB chute ASSY or SX chute from the ADF chute ASSY. Taptite cup S M3x8 SX chute ADF chute ASSY Taptite cup S M3x8 Fig. - Brother International DCP-8085DN | Service Manual - Page 255
9.18 Earth Spring (1) Turn the Exit chute cover ASSY upside down. Remove the Earth spring from the Exit chute cover ASSY. Earth spring Exit chute cover ASSY Antistatic brush Fig. 5-49 Assembling Note: • When assembling the Earth spring, ensure that the end of the Earth spring is attached onto the - Brother International DCP-8085DN | Service Manual - Page 256
9.19 PF Roller Holder ASSY (1) Turn the ADF chute ASSY upside down. Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the PF roller holder ASSY from the ADF chute ASSY. Bushing PF roller holder ASSY ADF chute - Brother International DCP-8085DN | Service Manual - Page 257
9.20 LF Roller 1 ASSY (1) Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Release the Lock lever and then remove the Bushing from the ADF chute ASSY, and remove the LF roller 1 ASSY from the ADF chute ASSY. Bushing LF roller 1 ASSY ADF chute ASSY Fig. 5-52 - Brother International DCP-8085DN | Service Manual - Page 258
9.21 SB Roller ASSY (For the models with the Reading DX only) (1) Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the SB roller ASSY from the ADF chute ASSY. Bushing SB roller ASSY ADF chute ASSY Fig. 5-54 - Brother International DCP-8085DN | Service Manual - Page 259
• When assembling each of the SB roller ASSY, LF roller 2/3/4 ASSYs and Exit roller ASSY, make sure to assemble it onto the correct position. Identify each roller by four shades of the rollers. Lighter LF roller 3 ASSY SB roller ASSY (For the models with the Reading DX only) * The shades of the - Brother International DCP-8085DN | Service Manual - Page 260
9.22 ADF Motor (1) Remove the two screw pan (S/P washer) M3x6, and then remove the ADF motor. Screw, pan (S/P washer) M3X6 ADF motor Motor frame ASSY Fig. 5-57 (2) Remove the three cup S M3x8 Taptite screws, and then remove the Motor frame ASSY. Motor frame ASSY Taptite cup S M3x8 View A - Brother International DCP-8085DN | Service Manual - Page 261
9.23 S/B Solenoid ASSY (For the models with the DX only) (1) Remove the cup S M3x8 Taptite screw. (2) Remove the S/B solenoid ASSY. Motor frame ASSY Taptite cup S M3x8 S/B Solenoid ASSY Fig. 5-60 9.24 PF Solenoid ASSY (For the models with the DX only) (1) Remove the cup S M3x8 Taptite screw. (2) - Brother International DCP-8085DN | Service Manual - Page 262
9.25 ADF Relay PCB (1) Remove the cup S M3x8 Taptite screw. (2) Remove the ADF relay PCB. Taptite cup S M3x8 ADF Relay PCB Fig. 5-62 Motor frame ASSY 5-62 Confidential - Brother International DCP-8085DN | Service Manual - Page 263
9.26 Paper Feed Chute ASSY (1) Remove the two cup S M3x8 Taptite screws. (2) Remove the Paper feed plate. (For the models with the DX only) Taptite cup S M3x8 Paper feed plate Taptite cup S M3x8 Fig. 5-63 (3) Remove the two cup B M3x8 Taptite screws. (4) Remove the Paper feed chute ASSY. Taptite - Brother International DCP-8085DN | Service Manual - Page 264
9.27 Actuator Front 1/Photo Interrupter (For the models with the DX only) (1) Turn the Paper feed chute ASSY upside down. Release the Hooks of the Photo interrupter to remove the Photo interrupter from the Paper feed chute ASSY. (2) Disconnect the Connector from the Photo interrupter. Hook Hook - Brother International DCP-8085DN | Service Manual - Page 265
9.28 Actuator Front 2/Photo Interrupter (For the models with the DX only) (1) Release the Hooks of the Photo interrupter to remove the Photo interrupter from the Paper feed chute ASSY. (2) Disconnect the Connector from the Photo interrupter. Connector Hook Hook Paper feed chute ASSY Photo - Brother International DCP-8085DN | Service Manual - Page 266
9.29 ADF Film/Spring Plate ADF Front A ASSY/Separation Rubber/Rubber Holder/Separation Spring (1) Remove the ADF film. (2) Remove the B M3x6 Taptite screw, and then remove the Spring plate ADF front A ASSY. (3) Remove the Separation rubber. (4) Remove the Rubber holder. (5) Remove the Separation - Brother International DCP-8085DN | Service Manual - Page 267
9.30 Presser Roller/LF Spring (1) Push the Hook to the direction of the arrow (1a) as shown in the figure below while holding the Presser roller, and remove the Presser roller shaft from the hook. (2) Pull the Presser roller shaft out of the Presser roller. (3) Remove the two LF springs. 2 LF - Brother International DCP-8085DN | Service Manual - Page 268
9.31 LF Roller 2 ASSY (1) Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the LF roller 2 ASSY from the ADF chute ASSY. Bushing LF roller 2 ASSY ADF chute ASSY Fig. 5-71 Hooks Conductive bushing A - Brother International DCP-8085DN | Service Manual - Page 269
9.32 Exit Roller ASSY (1) Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the Exit roller ASSY from the ADF chute ASSY. Bushing Exit roller ASSY ADF chute ASSY Fig. 5-73 Conductive bushing A Hooks - Brother International DCP-8085DN | Service Manual - Page 270
9.33 LF Roller 3 ASSY (1) Turn the ADF chute ASSY upside down. Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the LF roller 3 ASSY from the ADF chute ASSY. Bushing LF roller 3 ASSY ADF chute ASSY - Brother International DCP-8085DN | Service Manual - Page 271
9.34 LF Roller 4 ASSY (1) Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the LF roller 4 ASSY from the ADF chute ASSY. Bushing LF roller 4 ASSY ADF chute ASSY Fig. 5-77 Conductive bushing A - Brother International DCP-8085DN | Service Manual - Page 272
9.35 Flap A ASSY (For the models with the DX only)/ Flap A (For the models with out the DX only) (1) Release the Hooks of the Conductive bushing A to remove the Conductive bushing A. (2) Remove the Bushing from the ADF chute ASSY, and remove the Flap A ASSY or Flap A from the ADF chute ASSY. Bushing - Brother International DCP-8085DN | Service Manual - Page 273
9.36 Document Hold/Document Hold Spring (1) Push the Hooks to the direction of the arrows as shown in the figure below to remove the Document hold. (2) Remove the Document hold spring gently to prevent it from jumping. Hook Document hold Hook Document hold spring Hook Hook Hook Fig. 5-81 - Brother International DCP-8085DN | Service Manual - Page 274
(3) Remove the three cup B M3x10 Taptite screws. (4) Remove the Front frame. Main chute ASSY Front frame Fig. 5-83 Taptite cup B M3x10 (5) Remove the four cup B M3x10 Taptite screws. (6) Remove the Upper main chute ASSY from the Lower main chute ASSY. Taptite cup B M3x10 Taptite - Brother International DCP-8085DN | Service Manual - Page 275
9.38 Actuator R/Photo Interrupter (1) Turn the Actuator R to the direction of the arrow 1a and pull it out to the direction of the arrow 1b. 1b 1a Actuator R Lower main chute Fig. 5-85 (2) Release the Hooks of the Photo interrupter to remove the Photo interrupter from the Lower main chute. (3) - Brother International DCP-8085DN | Service Manual - Page 276
9.39 Flap B (1) Remove the Flap B from the Lower main chute. 1b 1a Actuator R Lower main chute Fig. 5-87 9.40 Actuator SB/Photo Interrupter (For the models with the DX only) (1) Push down the Stopper, slide the Actuator SB to the stopper side and pull up the Actuator SB to remove. Lower main - Brother International DCP-8085DN | Service Manual - Page 277
the Photo interrupter. Connector Hook Photo interrupter Hook Hook Lower main chute Fig. 5-89 9.41 Document Ejection Tray (1) Remove the ADF document output support flap from the Document cover LGL. ADF document output support flap Document cover LGL Fig. 5-90 5-77 Confidential - Brother International DCP-8085DN | Service Manual - Page 278
9.42 Document Cover Sensor (1) Disconnect the Connector from the Document cover sensor. (2) Pull the Document cover sensor downwards to remove it from the Document cover LGL while pressing the Hook of the Document cover sensor. Connector Document cover LGL 1 Boss Hook 2 Hook 2 2 2 - Brother International DCP-8085DN | Service Manual - Page 279
9.43 Eject Roller B4 (1) Remove the four Eject rollers B4 and two Pressure roller shaft S from the Document cover LGL. Pressure roller shaft S Eject rollers B4 Eject rollers B4 Pressure roller shaft S Document cover LGL Fig. 5-92 Hook Assembling Note: • When assembling the Eject - Brother International DCP-8085DN | Service Manual - Page 280
9.44 Presser Roller (1) Turn the Document cover LGL upside down. Remove the two cup B M3x10 Taptite screws. (2) Remove the Rear sensor cover from the Document cover LGL. Taptite cup B M3x10 Taptite cup B M3x10 Rear sensor cover Document cover LGL Fig. 5-93 (3) Remove the two cup B M3x10 Taptite - Brother International DCP-8085DN | Service Manual - Page 281
9.45 Panel Cover ASSY (1) Remove the Panel cover ASSY. Hooks Panel cover ASSY Fig. 5-95 5-81 Confidential - Brother International DCP-8085DN | Service Manual - Page 282
. • When connecting flat cable(s), do not insert them at an angle. After insertion, check that the cables are not at an angle. Driver PCB Scanner motor harness Driver PCB FFC cable Photo interrupter Main PCB Main PCB Fig. 5-96 (3) Remove the two cup B M4x20 Taptite screws. Lift up the rear - Brother International DCP-8085DN | Service Manual - Page 283
sure not to open the Top cover ASSY in a dusty place. (1) Remove the six cup B M4x12 Taptite screws. (2) Remove the Top cover ASSY from the Scanner base ASSY. Taptite cup B M4x12 Top cover ASSY Taptite cup B M4x12 Taptite cup B M4x12 Taptite cup B M4x12 Fig. 5-98 - Brother International DCP-8085DN | Service Manual - Page 284
9.48 Lock Lever B/ Lock Lever ASSY (1) Remove the cup B M3x6 Taptite screw, and then remove the Lock lever B. (2) Remove the two cup B M3x6 Taptite screws, and then remove the Lock lever ASSY. Assembling Note: • After moving the Lock lever ASSY to "A" direction, assemble "B" of the Lock lever B that - Brother International DCP-8085DN | Service Manual - Page 285
(2) Lift up the CCD Module and Guide shaft and pull the Guide shaft out of the CCD Module. CCD Module Guide shaft 2b 2a Scanner base Fig. 5-101 (3) Remove the Belt support rubber, and then remove the Belt from the CCD module. (4) Remove the double-faced adhesive tape which is attached between the - Brother International DCP-8085DN | Service Manual - Page 286
9.50 FFC Cable ASSY (1) Release the Hooks and remove the FFC plate. FFC plate Hook Hook Fig. 5-103 (2) Remove the Shield sponge and FFC cable ASSY. (3) Remove the Flat core from the FFC cable ASSY. Flat core Shield sponge 2 FFC cable ASSY 3 Fig. 5-104 5-86 Confidential - Brother International DCP-8085DN | Service Manual - Page 287
9.51 Scanner Motor FB (1) Remove the cup S M3x6 Taptite screw, and then remove the FB FG harness. (2) Remove the FB FG harness Taptite B M3x8 Fig. 5-105 (3) Remove the two Screws pan (S/P washer) M3x6, and then remove the Scanner motor FB. Screw, pan (S/P washer) M3X6 Drive plate ASSY Fig. 5-106 - Brother International DCP-8085DN | Service Manual - Page 288
9.52 Pulley ASSY (1) Remove the two B M3x6 Taptite screws, and then remove the Pulley ASSY. (2) Remove the Pulley spring. Taptite B M3x6 A Pulley spring 2 Pulley ASSY 1 Fig. 5-107 9.53 Photo Interrupter (1) Release the Hooks and remove the Photo interrupter. (2) Disconnect the - Brother International DCP-8085DN | Service Manual - Page 289
9.54 Panel Unit (1) Disconnect the connector of the Panel PCB harness from the Main PCB. Panel PCB harness Main PCB Fig. 5-109 Main PCB (2) Remove the four cup B M4x12 Taptite screw. (3) Remove the Tape fixing the Panel PCB harness. (4) Remove the Panel Unit. Taptite cup B M4x12 - Brother International DCP-8085DN | Service Manual - Page 290
9.55 Panel PCB ASSY (1) Disconnect the connector of the Panel PCB harness from the Panel unit. (2) Remove the four cup B M3x10 Taptite screws, release the two Hooks and remove the Panel cover. Taptite cup B M3x10 Panel PCB harness Panel cover generic 1 Taptite cup B M3x10 Hook 2 Hook Fig. 5-111 - Brother International DCP-8085DN | Service Manual - Page 291
(3) Disconnect the connector of the Backlight module harness from the Panel PCB ASSY. (4) Unlock the lock, and remove the LCD cable from the Panel PCB ASSY. Note: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited. • When connecting flat cable(s), - Brother International DCP-8085DN | Service Manual - Page 292
9.56 Printed Rubber Key (1) Remove the Printed rubber key. Printed rubber key Fig. 5-114 Panel cover 5-92 Confidential - Brother International DCP-8085DN | Service Manual - Page 293
9.57 LCD Cover/Backlight Module/LCD (1) Release the Hooks on the Panel cover to the direction of the arrow and remove the LCD cover from the Panel cover. (2) Remove the LCD ASSY. LCD cover Hooks 1c LCD ASSY Panel cover 1a 1b 1a Hooks Fig. 5-115 (3) Remove the LCD from the Backlight module. - Brother International DCP-8085DN | Service Manual - Page 294
9.58 NCU PCB ASSY (For the models with the NCU only) (1) Disconnect the connector of the NCU harness from the Main PCB. NCU harness Main PCB Main PCB Fig. 5-117 (2) Remove the Screw pan (S/P washer) M3.5x6, and remove the NCU FG harness ASSY. (3) Remove the two bind B M4x12 Taptite - Brother International DCP-8085DN | Service Manual - Page 295
(4) Remove the Screw pan (S/P washer) M3.5x6 screw, and then remove the NCU shield cover. (5) Disconnect the connector of the NCU harness. NCU shield cover Screw, pan (S/P washer) M3.5X6 NCU harness NCU shield plate NCU PCB ASSY Fig. 5-119 (6) Remove the two cup S M3x6 Taptite screws, and then - Brother International DCP-8085DN | Service Manual - Page 296
9.59 Speaker ASSY (1) Disconnect the connector of the Speaker harness from the Main PCB. Speaker harness Main PCB Main PCB Fig. 5-121 (2) Remove the bind B M4x12 Taptite screw. (3) Remove the Speaker hold spring and Speaker ASSY. Taptite bind B M4x12 Speaker hold spring Speaker ASSY Fig. 5- - Brother International DCP-8085DN | Service Manual - Page 297
screw and two cup B M3x8 Taptite screws. (3) Remove the Driver PCB shield and Driver PCB from the Joint cover ASSY. (4) Disconnect the connector of the Driver harness from the Driver PCB. Joint cover ASSY Driver PCB Taptite cup B M3x8 Driver PCB shield Taptite cup S M3x6 SR Taptite cup B M3x8 - Brother International DCP-8085DN | Service Manual - Page 298
9.61 USB HOST PCB ASSY (1) Disconnect the connector of the USB HOST harness ASSY from the Main PCB. USB HOST harness ASSY Main PCB Fig. 5-125 Main PCB 5-98 Confidential - Brother International DCP-8085DN | Service Manual - Page 299
(2) Disconnect the connector of the USB HOST harness ASSY from the USB HOST PCB ASSY. (3) Remove the bind B M4x12 Taptite screw, and remove the USB HOST FG harness. (4) Remove the bind B M4x12 Taptite screw, and remove the USB PCB holder from the joint cover ASSY. Taptite bind B M4x12 Taptite bind - Brother International DCP-8085DN | Service Manual - Page 300
9.62 Side Cover R (1) Remove the two bind B M4x12 Taptite screws, and then remove the Side cover R by following the direction from 1a to 1d. Taptite, cup S M3x6 Hook Side cover R 1d Hooks 1a Taptite, cup S M3x6 1c Hooks Fig. 5-128 Hooks 1b 5-100 Confidential - Brother International DCP-8085DN | Service Manual - Page 301
9.63 Joint Cover ASSY (1) Remove the Battery. (for the model supporting the Battery only) (2) Disconnect the connector of the Battery. (3) Disconnect the connector of the Battery harness from the Main PCB, and then remove the Battery harness. Battery 2 Battery harness 1 3 Main PCB Fig. 5-129 - Brother International DCP-8085DN | Service Manual - Page 302
(4) Remove the four bind B M4x12 Taptite screws from the Joint cover ASSY. (5) Release all Hooks of the Joint cover and lift up the front side of the Joint cover ASSY. (6) Pull out the Joint cover ASSY to the front side. Hooks 6 5 Joint cover ASSY Taptite, bind B M4x12 Hook Hook Hook Taptite, - Brother International DCP-8085DN | Service Manual - Page 303
9.64 Main PCB (1) Disconnect the 6 connectors and 6 flat cables from the Main PCB. Caution: • After disconnecting flat cable(s), check that each cable is not damaged at its end or short-circuited. • When connecting flat cable(s), do not insert them at an angle. After insertion, check that the cables - Brother International DCP-8085DN | Service Manual - Page 304
(2) Remove the four cup S M3x6 Taptite screws and two Screws to remove the Main PCB. Screws Main PCB 2a 2b Taptite, cup S M3x6 SR FG harness Fig. 5-132 Note: There are procedures for disassembling Frame L after this procedure. (9.87 FRAME L ASSY) 5-104 Confidential - Brother International DCP-8085DN | Service Manual - Page 305
9.65 Gear Plate Calking ASSY/Develop Joint/Main Motor ASSY (1) Place the printer body so that the Frame L is at the top. (2) Remove the eight bind B M4x12 Taptite screws and one cup S M3x6 taptite screw. (3) Remove the Gear plate calking ASSY from the Frame L. Note: • Be careful not to drop the gear - Brother International DCP-8085DN | Service Manual - Page 306
(4) Remove the four cup S M3x6 Taptite screws, and then remove the Main motor ASSY. Taptite, cup S M3x6 Taptite, cup S M3x6 Main motor ASSY Ferrite core Gear plate calking ASSY Taptite, cup S M3x6 Fig. 5-134 (5) Remove the Develop joint from the Gear plate calking ASSY. Develop joint Gear - Brother International DCP-8085DN | Service Manual - Page 307
9.66 Main Shield Plate ASSY (1) Remove the Insulation sheet. (2) Pull out the Flat cable from the Ferrite core. (3) Remove the Main PCB sheet. Insulation sheet Relay front PCB ASSY (Flat cable) Main PCB sheet Ferrite core Fig. 5-136 Frame L 5-107 Confidential - Brother International DCP-8085DN | Service Manual - Page 308
(4) Remove the two bind B M4x12 Taptite screws, and then remove the Plate. Taptite, bind B M4x12 Pin Frame L Plate Pin Taptite, bind B M4x12 Plate Base plate LV Fig. 5-137 Assembling Note: • When assembling the Plate, ensure to put the Plate into the base plate LV. • When - Brother International DCP-8085DN | Service Manual - Page 309
(5) Remove the three bind B M4x12 Taptite screws and cup S M3x6 Taptite screw, and then remove the Main shield plate ASSY. Taptite, bind B M4x12 Taptite, bind B M4x12 Taptite, cup S M3x6 Frame L Main shield plate ASSY Fig. 5-138 Assembling Note: • Hang the Tip of the Switch arm spring of the - Brother International DCP-8085DN | Service Manual - Page 310
9.67 Relay Rear PCB ASSY/Connector (1) Remove the Relay rear PCB ASSY (Include the DX sensor). Relay rear PCB ASSY DX sensor Hooks Frame L Hooks Hook Fig. 5-140 5-110 Confidential - Brother International DCP-8085DN | Service Manual - Page 311
(2) Remove the Connector harness. (3) Disconnect the LT connector while pressing the Hook inwards. LT connector Hook Connector harness Hook Frame L Fig. 5-141 Assembling Note: • When assembling the LT connector, ensure that its direction is correct referring to the figure below. Frame L Boss - Brother International DCP-8085DN | Service Manual - Page 312
five connectors from the Relay front PCB ASSY. Relay front PCB ASSY Pin Hook Frame L Fig. 5-143 Pin Hook Inter lock SW connector MP solenoid Toner sensor PCB connector connector Register solenoid connector T1 solenoid connector Relay front PCB ASSY Fig. 5-144 5-112 Confidential - Brother International DCP-8085DN | Service Manual - Page 313
of the Frame L. (4) Remove the Drive release cam. Drive release link Taptite, bind B M3x10 Drive release cam 4 MP solenoid ASSY MP solenoid lever Boss 2a 3 3 Guide Fig. 5-145 2b Frame L 5-113 Confidential - Brother International DCP-8085DN | Service Manual - Page 314
9.70 MP Solenoid ASSY (1) Remove the cup B M3x8 Taptite screw, and then remove the Spring. Frame L Taptite, cup B M3x8 Spring Fig. 5-146 Assembling Note: • When assembling the Spring, ensure that its direction is correct referring to the figure below. Spring Frame L Fig. 5-147 5-114 Confidential - Brother International DCP-8085DN | Service Manual - Page 315
(2) Remove the MP solenoid ASSY, Solenoid release spring P/R and MP solenoid lever. Solenoid release spring P/R MP solenoid ASSY MP solenoid lever Frame L Fig. 5-148 9.71 T1 Solenoid ASSY (1) Remove the bind B M3x10 Taptite screw. (2) Remove the T1 solenoid ASSY and the Solenoid release spring. - Brother International DCP-8085DN | Service Manual - Page 316
9.72 Toner Sensor PCB (1) Remove the Toner sensor PCB unit ASSY from the Frame L. Toner sensor PCB unit ASSY Frame L Hooks Fig. 5-150 (2) Remove the PT sensor holder from the Toner sensor PCB ASSY. PT sensor holder Toner sensor PCB ASSY Fig. 5-151 Hooks 5-116 Confidential - Brother International DCP-8085DN | Service Manual - Page 317
9.73 Register Solenoid ASSY (1) Remove the bind B M3x10 Taptite screw. (2) Remove the Register solenoid ASSY and the Solenoid release spring. Solenoid release spring Register solenoid lever Taptite, bind B M3x10 Register solenoid ASSY Frame L Fig. 5-152 9.74 Ejector Solenoid ASSY (1) Remove the - Brother International DCP-8085DN | Service Manual - Page 318
Interlock SW ASSY Frame L Fig. 5-154 Hooks 9.76 New Toner Actuator (1) Remove the cup B M2x6 Taptite screw. (2) Remove the New toner actuator and the New toner actuator spring. Taptite, cup B M2x6 New toner actuator Hook New toner actuator spring Frame L Fig. 5-155 Assembling Note: • When - Brother International DCP-8085DN | Service Manual - Page 319
9.77 Gear 17/20/23 (1) Remove the Gear 23. Hook Frame L Gear 23 (2) Remove the Gear 20. Hook Gear 20 Frame L Fig. 5-157 Fig. 5-158 5-119 Confidential - Brother International DCP-8085DN | Service Manual - Page 320
(3) Remove the Gear 17 (black). Hook Gear 17 (black) Frame L (4) Remove the Gear 17 (white). Fig. 5-159 Hook Gear 17 (white) Frame L Fig. 5-160 5-120 Confidential - Brother International DCP-8085DN | Service Manual - Page 321
9.78 Thermistor ASSY (1) Remove the Thermistor ASSY from the Frame L. Frame L Boss LT connector Fig. 5-161 5-121 Confidential - Brother International DCP-8085DN | Service Manual - Page 322
9.79 Filter (1) Slide the Sub duct to the direction of 1b while pressing the Hook to the direction of 1a and remove the Sub duct from the Air duct. Air duct Filter 1b 1c 1a Hook Hooks Fig. 5-162 Sub duct (2) Remove the Filter from the Air duct. Note: • The filter is dirt. Be - Brother International DCP-8085DN | Service Manual - Page 323
unit. Note: • Be careful not to lose the Protective film attached on the flat cable. • Do not touch the Laser scanner window directly. Laser unit Polygon motor (Flat cable) Taptite, cup S M3x6 Core Taptite, cup S M3x6 Protective film LD harness (Flat cable) Fig. 5-165 Assembling Note: • Before - Brother International DCP-8085DN | Service Manual - Page 324
9.81 PS PCB Unit (1) Turn the Printer upside down. (2) Remove the Screw pan (S/P washer) M3.5x7.5SR, and remove the NCU FG harness. (3) Remove the five bind B M4x12 Taptite screws, and then - Brother International DCP-8085DN | Service Manual - Page 325
(5) Remove the two bind B M4x12 Taptite screws, and then remove the LV insulation sheet. Taptite, bind B M4x12 LV insulation sheet Fig. 5-167 (6) Remove the bind B M4x12 Taptite screw, and then remove the SW holder ASSY. (7) Float the Fan motor 60 unit LV from the Frame R. Note: • Do not remove the - Brother International DCP-8085DN | Service Manual - Page 326
(8) Remove the bind B M3x10 Taptite screw, and remove the Safety louver. Frame R Safety louver Taptite, bind B M3x10 Fig. 5-169 (9) Remove the Inlet harness ASSY from the SW holder. (10) Press the Hooks on both sides of the Power supply switch, pull out the Power supply switch to the direction of - Brother International DCP-8085DN | Service Manual - Page 327
(11) Remove the harness of the fuser unit and power supply harness. (12) Put each harness through the space where the fan 60 unit is assembled and remove the PS PCB unit. (13) Remove the harness from the PS PCB unit. Harness PS PCB unit 12 11 Fig. 5-171 5-127 Confidential - Brother International DCP-8085DN | Service Manual - Page 328
9.82 High-Voltage PS PCB ASSY (1) Remove the four bind B M4x12 Taptite screws, and then remove the Base plate HV. Taptite, bind B M4x12 Base plate HV Taptite, bind B M4x12 Pin Pin Fig. 5-172 (2) Remove the bind B M4x12 Taptite screw, and then remove the HV insulation sheet. HV - Brother International DCP-8085DN | Service Manual - Page 329
ASSY. High-voltage PS PCB ASSY Taptite, bind B M4x12 Pins Fig. 5-174 High-voltage PS PCB ASSY MP PE sensor connector PE EG sensor connector Toner LED PCB connector Fig. 5-175 5-129 Confidential - Brother International DCP-8085DN | Service Manual - Page 330
9.83 Wireless PCB (PCB T60H989 ASSY 04) (Wireless LAN model) (1) Disconnect the connector from the Wireless PCB harness. (2) Remove the Wireless PCB (PCB T60H989 ASSY 04) from the Frame R. Wireless PCB harness Hooks Frame R Wireless PCB (PCB T60H989 ASSY 04) Fig. 5-176 5-130 Confidential - Brother International DCP-8085DN | Service Manual - Page 331
LED PCB Unit ASSY (1) Remove the pan (washer) B M3x8 Taptite screw, and remove the Regist ground spring. (2) Remove the Toner LED PCB unit ASSY from the Frame R. Frame R Hook Pins Toner LED PCB unit ASSY Taptite, pan B M3x8 Regist ground spring Fig. 5-177 Assembling Note: • Hang the - Brother International DCP-8085DN | Service Manual - Page 332
PCB. (4) Release the two Hooks to remove the LED holder from the Toner LED PCB. Fan motor 60 unit LV connector Hook LED holder Hook Fan motor 60 unit connector Toner LED PCB unit ASSY Fig. 5-179 9.85 Fan Motor 60 Unit (1) Remove the Fan motor 60 unit from the Frame R. Frame - Brother International DCP-8085DN | Service Manual - Page 333
9.86 Fan Motor 60 Unit LV (1) Remove the Fan motor 60 unit LV from the Frame R. Frame R Fan motor 60 unit LV Fig. 5-181 5-133 Confidential - Brother International DCP-8085DN | Service Manual - Page 334
Note: The procedure for disassembling the Frame L after "9.64 Main PCB" is described below. 9.87 FRAME L ASSY (1) Remove the Insulation sheet. (2) Pull out the flat cable from the Ferrite core. (3) Remove the Main PCB sheet. Insulation sheet Relay front PCB ASSY (Flat cable) Main PCB sheet Ferrite - Brother International DCP-8085DN | Service Manual - Page 335
(4) Remove the two bind B M4x12 Taptite screws, and then remove the Plate. Taptite, bind B M4x12 Pin Frame L Plate Pin Taptite, bind B M4x12 Plate Base plate LV Fig. 5-183 (5) Remove the Gear 23, Gear 17 (white), Gear 17 (black) and Gear 20. Fan motor 60 unit LV Fig. 5-184 5-135 - Brother International DCP-8085DN | Service Manual - Page 336
(6) Remove the six bind B M4x12 Taptite screws and the three cup S M3x6 Taptite screws. (7) Remove the Frame L. Taptite, bind B M4x12 Taptite, bind B M4x12 Taptite cup S M3x6 SR Under bar Fig. 5-185 Frame L ASSY Under bar 5-136 Confidential - Brother International DCP-8085DN | Service Manual - Page 337
9.88 MP Unit (1) Cut the Binder bundling the harnesses with nippers. Binder Cut PE EG sensor connector Paper feed frame MP PE sensor connector Fig. 5-186 (2) Remove the two bind B M3x8 Taptite screws. (3) Lift up the back side of the MP feed frame and pull up the MP feed frame to remove. Taptite, - Brother International DCP-8085DN | Service Manual - Page 338
(4) Open the MP feed frame cover. MP feed frame cover MP feed frame Fig. 5-188 (5) Release the Hook to remove the Holder bearing MP from the MP feed frame. Holder bearing MP Hook 5c 5b 5a MP feed frame Fig. 5-189 5-138 Confidential - Brother International DCP-8085DN | Service Manual - Page 339
(6) Slide the MP roller holder ASSY to the direction of 6a and pull it up to remove. Lift arm MP MP feed frame 6a 6b Hook Fig. 5-190 MP roller holder ASSY (7) Turn the MP feed frame upside down. (8) Slide the PE actuator MP B to the direction of 8b while pressing the Hook to the direction of 8a, - Brother International DCP-8085DN | Service Manual - Page 340
(9) Turn the PE actuator MP to the direction of 9a and pull it up to remove. PE actuator MP 9b 9a MP feed frame Fig. 5-192 (10) Remove the bind B M3x8 Taptite screw, and then remove the MP PE sensor ASSY. Taptite, bind B M3x8 MP PE sensor ASSY MP feed frame Fig. 5-193 5-140 Confidential - Brother International DCP-8085DN | Service Manual - Page 341
(11) Lift up the back of the Separation pad ASSY MP to the direction of 11a and pull up the Separation pad ASSY MP to remove. Separation pad ASSY MP MP frame 11b 11a Fig. 5-194 (12) Remove the MP separation spring from the MP frame. MP separation spring MP frame Fig. 5-195 5-141 Confidential - Brother International DCP-8085DN | Service Manual - Page 342
Assembling Note: • When assembling the MP separation spring, ensure that its direction is correct referring to the figure below. MP separation spring Fig. 5-196 Bosses 5-142 Confidential - Brother International DCP-8085DN | Service Manual - Page 343
9.89 Regist Actuator Rear/Regist Actuator Spring (1) Turn the Paper feed unit upside down. (2) Release the Hook A of the Actuator cover to pull up the Actuator cover to remove. Actuator cover Hook B Hook A Paper feed unit Fig. 5-197 (3) Slide the Regist actuator rear to the direction of 3b while - Brother International DCP-8085DN | Service Manual - Page 344
Assembling Note: • When assembling the Regist actuator spring, ensure that its direction is correct referring to the figure below. Hook Regist actuator rear Regist actuator spring Fig. 5-199 Hook 5-144 Confidential - Brother International DCP-8085DN | Service Manual - Page 345
9.90 Regist Actuator Front/Regist Actuator Spring (1) Slide the Regist actuator front to the direction of 1b while pressing the Hook to the direction of 1a and pull up the Regist actuator front to remove. Then, remove the Regist actuator spring from the Regist actuator front. 1d Regist actuator - Brother International DCP-8085DN | Service Manual - Page 346
9.91 Roller Holder ASSY (1) Push the Lift arm to the direction of 1a and pull out the pin of the Roller holder ASSY. Then, turn the Roller holder ASSY to the direction of 1b. Lift arm Pin Roller holder ASSY 1b Paper feed frame 1a Fig. 5-202 (2) Slide the Roller holder ASSY to the direction of - Brother International DCP-8085DN | Service Manual - Page 347
9.92 PE Actuator/Edge Actuator/Edge Actuator Spring (1) Remove the Edge actuator spring. Edge actuator spring Paper feed frame Edge actuator Hooks Fig. 5-204 (2) Release the hook and remove the Separation R shaft bearing. Separation R shaft bearing Hook Paper feed frame Fig. 5-205 5-147 - Brother International DCP-8085DN | Service Manual - Page 348
(3) Pull out the Separation roller drive shaft to the direction of the arrow and remove the Edge actuator and PE actuator. Edge actuator PE actuator Separation roller drive shaft Paper feed frame Fig. 5-206 5-148 Confidential - Brother International DCP-8085DN | Service Manual - Page 349
9.93 PE EG Sensor ASSY (1) Remove the three bind B M4x12 Taptite screws, and remove the MP frame. MP frame Taptite bind B M4x12 Taptite bind B M4x12 Taptite, bind B M4x12 Paper feed frame Fig. 5-207 Frame R 5-149 Confidential - Brother International DCP-8085DN | Service Manual - Page 350
(2) Remove the bind B M3x8 Taptite screw, and then remove the PE EG sensor ASSY. Taptite bind B M3x8 PE EG sensor ASSY Paper feed frame Fig. 5-208 5-150 Confidential - Brother International DCP-8085DN | Service Manual - Page 351
10. DISASSEMBLY PROCEDURE (LT-5300) 10.1 Paper Tray (1) Pull out the Paper tray from the LT-5300. Paper tray Fig. 5-209 (2) Pull up the back side of the Separation pad ASSY. (3) Push the Hooks provided on both sides of the Separation pad ASSY inwards. (4) Pull up the Separation pad ASSY. Hooks - Brother International DCP-8085DN | Service Manual - Page 352
(5) Remove the Separation pad spring. Separation pad spring (6) Remove the Lift gear 46. Fig. 5-211 Plate up plate Paper tray Plate up plate Lift gear 46 Hook Lift gear 46 Hook Fig. 5-212 Paper tray 5-152 Confidential - Brother International DCP-8085DN | Service Manual - Page 353
(7) Remove the Gear 21-16. Gear 21-16 (8) Remove the Gear 15. Fig. 5-213 Paper tray Gear 15 Fig. 5-214 Paper tray 5-153 Confidential - Brother International DCP-8085DN | Service Manual - Page 354
B M4x12 Taptite screws. (2) Remove the LT front cover ASSY. LT front cover ASSY Fig. 5-215 Taptite, bind B M4x12 (3) Remove the LT front paper guide from the LT front cover ASSY while pulling the two hooks inwards. LT front paper guide Hooks Fig. 5-216 LT front cover ASSY 5-154 Confidential - Brother International DCP-8085DN | Service Manual - Page 355
10.3 LT Rear Cover (1) Remove the two cup S M3x6 Taptite SR screws. (2) Remove the LT rear cover. Taptite, cup S M3x6 SR LT rear cover Fig. 5-217 5-155 Confidential - Brother International DCP-8085DN | Service Manual - Page 356
10.4 LT Side Cover L (1) Remove the bind B M4x12 Taptite screw. (2) Remove the cup S M3x6 Taptite SR screw. (3) Release the Hooks in the order of the arrows and remove the LT side cover L. Taptite, cup S M3x6 SR 3c Boss 3d 3a LT side cover L Hooks 3e Hooks 3b Fig. 5-218 Taptite, - Brother International DCP-8085DN | Service Manual - Page 357
10.5 LT Side Cover R (1) Remove the bind B M4x12 Taptite screw. (2) Remove the cup S M3x6 Taptite SR screw. (3) Release the Hooks in the order of the arrows and remove the LT side cover R. Taptite, cup S M3x6 SR Boss 3c LT side cover R 3d Hooks 3e Fig. 5-219 3a 3b Taptite, bind B - Brother International DCP-8085DN | Service Manual - Page 358
10.6 LT PCB ASSY (1) Disconnect the connectors from the LT PCB ASSY. (2) Remove the bind B M4x12 Taptite screw, and then remove the LT PCB ASSY. Hook LT PCB ASSY LT frame L Taptite, bind B M4x12 LT PCB ASSY LT sensor harness ASSY 1 connector LT sensor PCB connector LT sensor - Brother International DCP-8085DN | Service Manual - Page 359
10.7 Connector: 55533-1219 (1) Remove the LT sensor harness ASSY 1 from the Connector: 55533-1219. (2) Disconnect the Connector: 55533-1219 while pressing the Hooks inwards. Hook Connector: 55533-1219 Hook LT sensor harness ASSY 1 LT frame L Fig. 5-221 10.8 Connector: 54702-1219 (1) Remove the - Brother International DCP-8085DN | Service Manual - Page 360
10.9 Gear 24 LT (1) Place the LT so that the LT frame L is at the top. (2) Release the Hook to remove the Gear 20 T1 roller drive from the LT frame L. Hook Gear 20 T1 roller drive LT frame L Fig. 5-223 (3) Remove the Retaining ring E4. (4) Remove the Gear 24 LT from the LT frame L. - Brother International DCP-8085DN | Service Manual - Page 361
10.10 Collar 6 (1) Remove the Gear plate ground spring from the LT frame L. LT frame L Gear plate ground spring Fig. 5-225 (2) Remove the cup S M3x6 Taptite SR screw, and then remove the Feed roller ground plate. Taptite, cup S M3x6 SR Feed roller ground plate LT frame L Fig. 5-226 5-161 - Brother International DCP-8085DN | Service Manual - Page 362
(3) Remove the T1 sector gear spring LT from the LT frame L. T1 sector gear spring LT LT frame L Fig. 5-227 Assembling Note: • When assembling the T1 sector gear spring LT, ensure that its direction is correct referring to the figure below. T1 sector gear spring LT T1 sector gear LT frame L Hook - Brother International DCP-8085DN | Service Manual - Page 363
(4) Remove the LT solenoid harness from the hooks of the LT drive unit. Hooks Hooks LT drive unit LT solenoid harness LT solenoid ASSY Fig. 5-229 (5) Remove the cup S M3x6 Taptite screw. (6) Remove the four bind B M4x12 Taptite screws, and then remove the LT drive unit. Taptite, bind B M4x12 - Brother International DCP-8085DN | Service Manual - Page 364
(7) Remove the Clutch spring from the LT drive unit. Clutch spring LT drive unit Fig. 5-231 (8) Remove the Collar 6. (9) Remove the Clutch arm ASSY from the LT drive unit. Clutch arm ASSY Collar 6 LT drive unit Fig. 5-232 (10) Remove the Collar 6 from the Clutch arm ASSY. Clutch arm ASSY - Brother International DCP-8085DN | Service Manual - Page 365
10.11 LT Solenoid ASSY (1) Remove the bind B M3x10 Taptite screw, and then remove the LT solenoid ASSY. (2) Remove the Solenoid release spring P/R from the LT solenoid ASSY. Solenoid release spring P/R Taptite, bind B M3x10 LT frame L LT solenoid ASSY Fig. 5-234 10.12 Roller Holder ASSY (1) - Brother International DCP-8085DN | Service Manual - Page 366
(2) Slide the Roller holder ASSY to the direction of the arrow 2a. Then, lift up the gear side of the Roller holder ASSY to the direction of the arrow 2b and pull it out to the direction of the arrow 2c to remove. Roller holder ASSY 2c "A" 2b Paper feed frame 2a Fig. 5-236 Assembling Note: • When - Brother International DCP-8085DN | Service Manual - Page 367
10.14 PE Actuator , Edge Actuator (1) Release the Hook and remove the Separation R shaft bearing. Separation R shaft bearing Hook LT paper feed frame Fig. 5-238 (2) Pull out the Separation roller drive shaft to the direction of the arrow and remove the Edge actuator and PE actuator. Separation - Brother International DCP-8085DN | Service Manual - Page 368
10.15 LT Sensor PCB ASSY (1) Remove the two bind B M4x12 Taptite screws. (2) Remove the four cup S M3x6 Taptite SR screws, and then remove the LT frame L. Taptite, cup S M3x6 SR Taptite, bind B M4x12 Under bar Taptite, cup S M3x6 SR Taptite, bind B M4x12 LT frame L Under bar Fig. 5-240 (3) - Brother International DCP-8085DN | Service Manual - Page 369
(4) Remove the two cup B M3x12 Taptite screws, and then remove the LT front beam. Taptite, cup B M3x12 LT front beam LT paper feed frame Fig. 5-242 (5) Remove the bind B M3x8 Taptite screw, and then remove the LT sensor PCB ASSY. Taptite, bind B M3x8 LT sensor PCB ASSY LT paper feed frame Fig. 5-243 - Brother International DCP-8085DN | Service Manual - Page 370
CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT Confidential - Brother International DCP-8085DN | Service Manual - Page 371
CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT This chapter details adjustments and updating of settings, which are required if the head/ carriage unit, main PCB and some other parts have been replaced. CONTENTS 1. IF YOU REPLACE THE MAIN PCB 6-1 2. IF YOU REPLACE - Brother International DCP-8085DN | Service Manual - Page 372
Set the CCD Scanner Area (Maintenance Mode:Code 55) ■ Setting the Serial Number ■ Setting the Toner Cartridge Type ■ Scanning and Printing Check (6) The Download Utility (FILEDG32.EXE) Copy it into the folder that has been created in the C drive. (7) The Brother Maintenance USB Printer Driver Copy it - Brother International DCP-8085DN | Service Manual - Page 373
list shown on the LCD. (1) Save the necessary program files such as Main firmware (djf file) to rewrite them into the USB flash memory drive. (2) Connect the USB flash memory drive to the USB direct interface on the front of the machine. (3) "Direct Print" is displayed on the first line of the - Brother International DCP-8085DN | Service Manual - Page 374
your PC to identify terminals via one single virtual USB device. Note; • Once this installation procedure is carried out for a PC, no more driver/software installation will be required for that PC to identify machines. If the Brother Maintenance USB Printer driver has been already installed to your - Brother International DCP-8085DN | Service Manual - Page 375
(6) The following screen appears, indicating the detection of new hardware device by the system. Select "No, not this time." And click Next. (7) Select "Install the software automatically (Recommended)" and click Next. 6-4 Confidential - Brother International DCP-8085DN | Service Manual - Page 376
(8) Alert warning message of WHQL appears. Click Continue Anyway to proceed. 6-5 Confidential - Brother International DCP-8085DN | Service Manual - Page 377
appears. Click Finish to return. Note; • In order to check whether the printer driver is successfully installed, click Start, Settings and Printers and select the Printers window. Then, check that the Brother Maintenance USB Printer icon is shown. (10) Repeat the steps from (7) to (9) three times - Brother International DCP-8085DN | Service Manual - Page 378
completed, refer to the following steps for the detailed procedures to rewrite the program files. If the Brother Maintenance USB Printer Driver has already been installed to your PC according to this procedure, start to rewrite the program files. Note; • DO NOT unplug the power cord of - Brother International DCP-8085DN | Service Manual - Page 379
Area (Maintenance Mode: Code 55) Refer to "4.16 Acquisition of White Level Data and CCD Scanner Area Setting" in Chapter 7, and perform the acquisition of white level data and CCD scanner area setting. ■ Setting the Serial Number (1) Connect the computer to the machine with the USB cable. (2) Double - Brother International DCP-8085DN | Service Manual - Page 380
(3) Check the port (USB) that the machine is connected through and click "Serial No." in the lower box. Enter the serial number (the last nine digits) of the machine into the box on the right hand side and click the [OK] button. A confirmation window opens and shows the serial number. Check that it - Brother International DCP-8085DN | Service Manual - Page 381
the starter toner cartridge, standard one and high-capacity one. Therefore, it is necessary to set the conformable value to the toner cartridge installed in and telephone book. Even if the toner cartridge reaches the end of actual life, the warning display does not appear, the problem may occur in - Brother International DCP-8085DN | Service Manual - Page 382
Printing Check Scan the test chart TC-023 with ADF, and make sure there are no problem of the printed image. Make sure there are no problem of the ADF, scanner unit and the performance of recording part. ■ ROM Version Check (Maintenance Mode: Code 25) Refer to "4.9 ROM Version Check (Function code - Brother International DCP-8085DN | Service Manual - Page 383
of the Wireless LAN PCB Information WIRELESS LAN PCB ASSY ■ Backup to the Main PCB of the Wireless LAN PCB Information (MFC 8890DW only) The main PCB stores a part of the information of EEPROM on the wireless LAN PCB. It is necessary to write the information of EEPROM - Brother International DCP-8085DN | Service Manual - Page 384
the acquisition of white level data and CCD scanner area setting. ■ Scanning and Printing Check Scan the test chart TC-023 with ADF, and make sure there are no problem of the printed image. Make sure there are no problem of the ADF, scanner unit and the performance of recording part. ■ Placement - Brother International DCP-8085DN | Service Manual - Page 385
CHAPTER 7 SERVICE MODE - Brother International DCP-8085DN | Service Manual - Page 386
code 87 7-34 4.23 Counter Reset After Replacing the Fuser Unit, Laser Unit and Paper Feed Kit (Function code 88 7-35 4.24 Maintenance Mode Finish (Function code 99 7-35 5. OTHER SERVICE FUNCTIONS 7-36 5.1 Resetting the Periodical Replacement Parts Life 7-36 5.2 Develop Roller / Developing - Brother International DCP-8085DN | Service Manual - Page 387
5.4 Unlocking and Clearing the Password of the Function Lock / Setting Lock ........ 7-39 5.5 Clearing the Data of the Secure Print 7-39 Confidential - Brother International DCP-8085DN | Service Manual - Page 388
in which the machine is ready to accept entry from the buttons. To select one of the maintenance-mode functions listed in "2. LIST OF MAINTENANCEMODE FUNCTIONS", press the [ ] button or [ ] button to display any function code on the LCD. Then press the [OK] button. (The details of each maintenance - Brother International DCP-8085DN | Service Manual - Page 389
Print Function 45 Switching the USB Setting 52 Pan-nordic Select Country 53 Received Data Transfer Function 54 Fine Adjustment of Scan Start/ Unit, Laser Unit and Paper Feed Kit 91 EEPROM Parameter Initialization 99 Maintenance Mode Finish - Cancellation of the Memory Security Mode - Brother International DCP-8085DN | Service Manual - Page 390
service personnel (e.g., by telephone). The user-accessible functions (codes 06, 09, 10, 11, 12, 25, 45, 53, 54, 80, 82, 87 and 88) are shaded in the table given on the previous page. Function switch tables in APPENDIX 1. The service personnel should instruct end users to follow the procedure - Brother International DCP-8085DN | Service Manual - Page 391
91 does not initialize some areas, as listed below. Data item Maintenance-mode functions User switches Firmware switches Function code Remote activation code Station ID data Outside line number Telephone function registration One-touch dialing Speed dialing Group dialing 01 91 These will be - Brother International DCP-8085DN | Service Manual - Page 392
4.2 Printout of Scanning Compensation Data (Function code 05) The machine prints out the white and black level data for scanning compensation. Implement the operating procedure below after scanning the document once at least, not immediately after the machine is - Brother International DCP-8085DN | Service Manual - Page 393
(4) Upon completion of recording of the compensation data list, the equipment returns to the initial stage of the maintenance mode. Note: • If any data is abnormal, its code will be printed in inline style. ■ For white and black scanning Fig. 7-1 7-6 Confidential - Brother International DCP-8085DN | Service Manual - Page 394
■ For color scanning Fig. 7-2 7-7 Confidential - Brother International DCP-8085DN | Service Manual - Page 395
function right before packing and shipping it. Note: • Please instruct end users to perform this function if possible before packing and shipping their FAX equipment to a sales agent or a service (2) Press the [0] and [8] keys in this order. MFC-8880DW/8890DW only Press the [ ] or [ ] buttons so that - Brother International DCP-8085DN | Service Manual - Page 396
4.5 Test Pattern 1 (Function code 09) This function, much like the copying function, prints out test pattern 1 to allow the service personnel to check for record data missing or print quality. Press the [0] and [9] keys in this order in the initial stage of the - Brother International DCP-8085DN | Service Manual - Page 397
in some versions. The firmware switch data list indicates "Not used." for those inapplicable switches. ■ Firmware Switches (WSW01 through WSW74) WSW No. Function WSW01 Dial pulse setting WSW02 Tone signal setting WSW03 PABX mode setting WSW04 TRANSFER facility setting WSW05 1st dial tone and - Brother International DCP-8085DN | Service Manual - Page 398
setting 22 Function setting 23 Function setting 24 Not used Scanning light intensity to judge to be stable 1 Scanning light intensity to judge to be stable 2 Not used Setting the language / Default paper size Setting the paper support Drum life end Not used Fuser unit life end Scanner unit life - Brother International DCP-8085DN | Service Manual - Page 399
press the [Stop/Exit] button. • If there is a pause of more than one minute after a single-digit number is entered for double-digit firmware switch numbers, the switches are shaded. • Machine w/o fax support some selectors of firmware switches. Those selector numbers are circled. 7-12 - Brother International DCP-8085DN | Service Manual - Page 400
4.6.2 Printout of firmware switch data (Function code 11) The machine prints out the setting items and contents specified by the firmware switches. (1) Press the [1] key twice in the initial stage of - Brother International DCP-8085DN | Service Manual - Page 401
4.7 Operation Check of LCD (Function code 12) This function allows you to check whether the LCD on /Exit] button in any process of the above display cycle. The machine beeps for one second and returns to the initial stage of the maintenance mode. Backlight on Backlight on Backlight - Brother International DCP-8085DN | Service Manual - Page 402
PCB (Function code 13) This function allows number key or button is pressed, the machine beeps for one second and returns to the initial stage of the maintenance mode 485 D E F S 7 90 GHI T JKL MNOPQR ■ MFC8480DN/8880DN/8890DW 1234567 890ABCD EFGHIJK LM NOPQ W \]^ UYV a b c p X - Brother International DCP-8085DN | Service Manual - Page 403
4.9 ROM Version Check (Function code 25) This function allows you to check the management information of the software programs such as version information, check sum. ] button. The machine beeps for one second and returns to the initial stage of the maintenance mode. 7-16 Confidential - Brother International DCP-8085DN | Service Manual - Page 404
Function code 32) This function TN Toner sensor MP Multi-purpose tray sensor NT New toner sensor Document cover closed. FH Document scanner home position sensor CCD unit home remove the toner cartridge, jam paper at the paper outlet, insert paper from the manual feeder, and - Brother International DCP-8085DN | Service Manual - Page 405
the [Stop/Exit] button. The machine beeps for one second and returns to the initial stage of the rear PCB) DX tray sensor New toner sensor (Relay front PCB) Front cover sensor Toner sensor PCB (Light reception) Regist rear sensor High-voltage PS PCB Fig. 7-8 Toner LED PCB (Light emission) Frame - Brother International DCP-8085DN | Service Manual - Page 406
Function setting LCD indication Description Set value Initial value Manual Feed Switching of the Manual Feed On/Off Off Resolution Resolution to print 300/600/1200dpi 600 Toner Save Switching of the Toner of the protection of the page memory Off/Letter/A4/Legal/Auto Off Emulation - Brother International DCP-8085DN | Service Manual - Page 407
■ Detail description LCD indication Detail description Manual Feed Effective for the print from the panel. Link the setting of the Toner Save. Judge the both setting, and memory management problem of the MFC. Emulation Configure the setting for the Emulation. Charge the setting of the Function - Brother International DCP-8085DN | Service Manual - Page 408
Configure the setting for the interface open time. The function is in the PC-Print. When the PC-Scan/Remote-SetUp works on the way, the setting on the PC, the setting becomes effective. And this setting is ignored. The default value is different by the country setting. US/CAN are the Letter, and - Brother International DCP-8085DN | Service Manual - Page 409
(operation system), as for this function, the operation system does not increase that the device is connected the PC. To solve the problem, the return value of the serial number switch the "0". beeps for approx. one second, and return to the initial stage of the maintenance mode. 7-22 Confidential - Brother International DCP-8085DN | Service Manual - Page 410
name will appear on the LCD. Note: • The country name indicated on the LCD varies depending on the area (code input in Function code 74) as shown in the table below. France and surrounding countries Oceania France Australia België / Belgique New Zealand Nederland - - - - - Pan-Nordic - Brother International DCP-8085DN | Service Manual - Page 411
, carry out the following procedure more than one time. TIP: • If there are both color and monochrome data in a file to be transferred, the monochrome data will be transferred first. If the receiver machine does not support the color function, the sender machine cannot transfer color data, resulting - Brother International DCP-8085DN | Service Manual - Page 412
■ Cover page sample Job number Total number of page to be transferred Station ID registered in the sender equipment FAX number of the sender equipment Telephone number of the sender equipment Transfer start date Model code Boot ROM info ROM info Serial number ■ End page sample Fig. 7-9 Job number - Brother International DCP-8085DN | Service Manual - Page 413
Procedure> (1) Press the [5] and [4] keys in this order in the initial stage of the maintenance mode. The "SCAN START ADJ." will appear on the LCD. (2) The " : ADF : FB" will appear after two seconds. Select one of them that you want to adjust the start position. If you want to adjust the start - Brother International DCP-8085DN | Service Manual - Page 414
MAINTENANCE [5] and [4] buttons select SCAN START ADJ. [OK] button :ADF 2 seconds later : FB [ ] or [ ] button - + [Stop/Exit] button MAINTENANCE [ ] button [ ] button - +- + [Stop/Exit] button MAINTENANCE [OK] button ACCEPTED 1 second later Fig. 7-12 7-27 Confidential - Brother International DCP-8085DN | Service Manual - Page 415
Scanner Area Setting (Function code 55) This function allows the machine to obtain white level data for the CCD scanner and save it together with the CCD scanner setting value into the EEPROM, and then it beeps for one second and returns to the initial stage of the maintenance mode - Brother International DCP-8085DN | Service Manual - Page 416
so that machine stops printing. Then, it beeps for one second and returns to the initial stage of the Function code 74) This function allows you to customize the EEPROM according to language, function (2) Enter the desired customizing code (e.g., MFC-8890DW (US): 0401). The newly entered - Brother International DCP-8085DN | Service Manual - Page 417
3153) 3115 (3165) 3104 3104 (3165) 3104 --------3104 --- ----0104 ------0140 --- --- 3104 MFC8480DN 0201 0202 0236 0236 0242 --- --- --- MFC- MFC- 8880DN 8890DW --- 0401 --- 0402 --- 0436 --- 0436 --- 0442 2303 2403 2304 2404 2305 (2355) 2405 (2455) 2308 (2355) 2408 (2455 - Brother International DCP-8085DN | Service Manual - Page 418
4.19 Operational Check of Fans (Function code 78) This function is to check whether each of fans is (3) Press the [Stop/Exit] button so that the machine stops checking the fans, beeps for one second and returns to the initial stage of the maintenance mode. Note: • If the air intake - Brother International DCP-8085DN | Service Manual - Page 419
count Number of printed pages with the drum unit. Number of times the drum unit has been replaced. Number of printed pages with the Black toner cartridge. Previous number of printed pages with the Black toner cartridge. Estimate toner remaining amout Toner remaining amout in number of development - Brother International DCP-8085DN | Service Manual - Page 420
Number of HAGAKI LABEL: Number of label ADSX_PG: Number of pages scanned with the ADF. (Simplex scanning) ADDX_PG: Number of pages scanned with the ADF. (Duplex scanning) FB_PG: Number of pages scanned with the FB unit. KDEV_BIAS: Black developing bias voltage POWER: Total energization - Brother International DCP-8085DN | Service Manual - Page 421
code 87) This function outputs the transmission log (that the machine has stored about the latest transmission) to the telephone line. It allows the service personnel to receive the transmission log of the user's machine at a remote location and use it for analyzing problems arising in - Brother International DCP-8085DN | Service Manual - Page 422
Reset After Replacing the Fuser Unit,Laser Unit and Paper Feed Kit (Function code 88) The number of replacement is increased by one, and the warning indication "Replace ***" is cleared, with implementing this operation after replacing the fuser unit, laser unit and paper feed Kit (MP - Brother International DCP-8085DN | Service Manual - Page 423
and the "Fuser" will appear on the LCD. ■ Resetting the Life Counter of the Drum Unit This function allows you to reset the page counter of the drum unit and increase the number of replacement times by one. (1) Press the [3] and [9] keys at the same time in the ready - Brother International DCP-8085DN | Service Manual - Page 424
■ Resetting the Life Counter of the Paper Feeding Kit This function allows you to reset the page counter of the paper feeding kit (1 or 2) and increase the number of replacement times by one. (1) Press the [3] and [9] keys at the same time in the ready state. The " - Brother International DCP-8085DN | Service Manual - Page 425
of the laser unit is reset, and the number of replacement times is increased by one. Then, toner cartridge is replaced with a new one, the develop roller counter and developing bias voltage are reset at the same time. This function allows you to reset these manually. Panel Operation Function - Brother International DCP-8085DN | Service Manual - Page 426
procedure described below, you can remedy the condensation of the surface of the drum in drying by heat of the fuser unit. (1) Open and Clearing the Password of the Function Lock / Setting Lock ■ How to clear the password The user's can not clear the password that registered by - Brother International DCP-8085DN | Service Manual - Page 427
CHAPTER 8 CIRCUIT DIAGRAMS, WIRING DIAGRAM Confidential - Brother International DCP-8085DN | Service Manual - Page 428
CHAPTER 8 CIRCUIT DIAGRAMS, WIRING DIAGRAM This chapter provides the circuit diagrams of the MJ PCB and power supply PCB and the wiring diagrams that help you understand the connections between PCBs. CONTENTS 1. CIRCUIT DIAGRAMS...8-1 2. WIRING DIAGRAM ...8-5 Confidential - Brother International DCP-8085DN | Service Manual - Page 429
1. CIRCUIT DIAGRAMS „ High-voltage Power Supply PCB Circuit Diagram Fig. 8-1 8-1 Confidential - Brother International DCP-8085DN | Service Manual - Page 430
■ LVPS PCB Circuit Diagram (230V) Fig. 8-2 8-2 Confidential - Brother International DCP-8085DN | Service Manual - Page 431
■ LVPS PCB Circuit Diagram (115V) Fig. 8-3 8-3 Confidential - Brother International DCP-8085DN | Service Manual - Page 432
■ NCU PCB circuit diagram 1 2 3 4 5 6 +24V D7 A 1SS120 A CML 6B @R1 120 2W + R41-4910-A XX 3 XX 4 L3 D4 RA-351M-V6-2 L2 SW1 11 12 2 7 1 A5X-24E-908 R7 100 2W JW1 R4 6.2k @T1 NC BT-17 C2 C102 @C3 C10 + 35V C4 C103 @R8 510 R10 2.7k C5 50V + C2.2 SL 6B (LINE) FG 7 FG - Brother International DCP-8085DN | Service Manual - Page 433
FG- HU+ HU- HV+ HVHW+ HW+5V S0V U U V V W W SEN_FBHOME GND +3.3V COUNT +24V MFC-8880DN/8980DW only BAT_N BAT_P SEN_STACK GND +3.3V CN16-9 -8 -7 -6 -5 -4 -3 -2 -1 CN1-22 -21 -20 -1 P3-5 -4 -3 -2 -1 MAIN MOTOR DRIVER SCANNER MOTOR DRIVER HOME POSITION COUNTER BATTRY STACK SENSOR DPSEN2 DPSEN1 - Brother International DCP-8085DN | Service Manual - Page 434
APPENDIX 1 FIRMWARE SWITCHES (WSW) This appendix describes the functions of the Firmware switches. Use the Firmware switch to match the environmental conditions if the machine malfunctions due to mismatching. Confidential - Brother International DCP-8085DN | Service Manual - Page 435
the Worker switches, which can be divided into two groups: one is for customizing preferences designed for the shipping destination (Refer to "4.18 EEPROM Customizing (Function code 74)" in Chapter 7) and the other is for modifying preferences that match the machine to the environmental conditions - Brother International DCP-8085DN | Service Manual - Page 436
22 Function setting 23 Function setting 24 Not used Scanning light intensity to judge to be stable 1 Scanning light intensity to judge to be stable 2 Function setting 25 Setting the language / Default paper size Setting the paper support Drum life end Not used Fuser unit life end Scanner unit - Brother International DCP-8085DN | Service Manual - Page 437
WSW No. WSW70 WSW71 WSW72 WSW73 Function Paper feeding kit life end Paper feeding kit 2 life end Paper feeding kit MP life end Not used Refer to: App. 1-73 App. 1-74 App. 1-74 App. 1-74 App. 1-3 Confidential - Brother International DCP-8085DN | Service Manual - Page 438
: 850 ms 1 0 : 950 ms (for 16 PPS) 1 1 : 600 ms (at 106-ms intervals) Switching between pulse and 7 tone dialing, by the function 0: Yes 1: No switch 8 Default dialing mode, pulse (DP) or tone (PB) dialing 0: PB 1: DP • Selectors 1 and 2: Dial pulse generation mode These selectors set the - Brother International DCP-8085DN | Service Manual - Page 439
whether or not the dialing mode can be switched between the pulse (DP) and tone (PB) dialing by using the function switch. • Selector 8: Default dialing mode, pulse (DP) or tone (PB) dialing This selector sets the default dialing mode (pulse dialing or tone dialing) which can be changed by the - Brother International DCP-8085DN | Service Manual - Page 440
Selector No. Function Setting and Specifications No. 1 2 1 2 Tone signal transmission time length 0 0 : 70 ms 0 1 : 80 ms 1 0 : 90 ms 1 1 : 100 ms No. 3 4 3 Min. pause in tone dialing 4 0 0 : 70 ms 0 1 : - Brother International DCP-8085DN | Service Manual - Page 441
Selector No. Function Setting and Specifications CNG detection when sharing a 1 modular wall socket with a 0: A 1: B telephone No. 2 3 4 0 0 0: 50 ms 0 0 1: 210 ms 2 Detection time length of PABX* 0 1 0: 500 ms I dial - Brother International DCP-8085DN | Service Manual - Page 442
which detects a dial tone when a line is connected to the PABX. Setting both of these selectors to "1" activates the dial tone detection function so that the machine starts dialing upon detection of a dial tone when a line is connected. Other setting combinations deactivate the dial tone detection - Brother International DCP-8085DN | Service Manual - Page 443
250 ms 1 1 0: 500 ms 1 1 1: 700 ms Note: • Selectors 1 and 5 through 8 are not applicable in those countries where no transfer facility is supported. • Selectors 6 and 8: Break time length for flash function These selectors set the break time length. This setting is effective only when the flash - Brother International DCP-8085DN | Service Manual - Page 444
so that the machine starts dialing upon detection of a dial tone when a line is connected. (However, in those countries which support no dial tone detection function, e.g., in the U.S.A., setting these selectors to "1" makes the machine start dialing after a WAIT of 3.5 seconds.) For the detecting - Brother International DCP-8085DN | Service Manual - Page 445
machine automatically disconnects the line upon detection of a busy tone in automatic receiving mode. Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: No pause 0 0 1: 3.5 sec. wait 0 where no dial tone detection is supported, e.g., U.S.A. App. 1-11 Confidential - Brother International DCP-8085DN | Service Manual - Page 446
] button will cause the machine to insert a wait of 3.5 seconds. ((In those countries where no dial tone detection function is supported, setting these selectors to "1, 0, 1," "1, 1, 0," or "1, 1, 1" inserts a wait of 3.5 seconds.) • Selectors 4 through 6: Detection of 2nd dial tone Upon detection - Brother International DCP-8085DN | Service Manual - Page 447
Selector No. Function Setting and Specifications No. 1 2 1 0 0: Narrows by 10 Hz Dial tone 7 are not applicable in those countries where no dial tone or line current detection is supported, e.g., U.S.A. • Selectors 1 and 2: Dial tone frequency band control These selectors set the - Brother International DCP-8085DN | Service Manual - Page 448
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: 50 ms 1 I 1st dial tone detection time length 3 0 0 1: 250 ms WSW08 is not applicable in those countries where no dial tone detection is supported, e.g., U.S.A. • Selectors 1 through 3: 1st dial tone detection time - Brother International DCP-8085DN | Service Manual - Page 449
Selector No. Function Setting and Specifications 1 Frame length selection 0: 256 octets 1: 64 octets 2 Use of non-standard • Selectors 1 through 5 are not applicable in those models which do not support ECM. • Selector 1: Frame length selection Usually a single frame consists of 256 - Brother International DCP-8085DN | Service Manual - Page 450
Selector No. Function Setting and Specifications 1 DPS switching interfacing with CML 0: No 1: Yes 2 Time length from transmission of the last dial digit to CML ON 0: 100 ms 1: 50 - Brother International DCP-8085DN | Service Manual - Page 451
Selector No. Function Setting and ranges for 1: 175-440/175-440 ms busy tone (More than one 6 setting allowed) 1: 100-1000/17-660 ms 7 1: 110- is not applicable in those countries where no busy tone detection is supported. • The setting of WSW11 is effective only when selectors 5 and - Brother International DCP-8085DN | Service Manual - Page 452
Selector No. 1 2 3 4 5 6 7 8 Function Setting and Specifications Min. detection period required for interpreting incoming calling signal (CI) as OFF No. 1 0 0 1 1 2 0: 1500 ms 1: 500 ms 0: 700 ms 1: 900 ms Max. - Brother International DCP-8085DN | Service Manual - Page 453
adjust the transmitting level attenuation of the modem when the reception level at the remote station is improper due to line loss. This function applies for G3 protocol signals. Setting two or more selectors to "1" produces addition of attenuation assigned to each selector. If selector 8 on WSW23 - Brother International DCP-8085DN | Service Manual - Page 454
Selector No. Function Setting and Specifications No. 1 2 1 Frequency band selection 0 0: 13 Hz (lower limit) for incoming calling 0 1: 15 Hz 2 signal (CI) 1 0: 23 Hz 1 1: 20 Hz No. 3 4 3 Frequency band - Brother International DCP-8085DN | Service Manual - Page 455
Selector No. Function 1 Redial interval 2 3 I No. of redialings 6 7 (Not used.) 8 CRP option Setting and Specifications No. 1 0 0 1 1 2 0: 5 min. 1: 1 min. 0: 2 min. 1: 3 min. No. 3 4 5 6 0 0 0 0: 16 times 0 0 0 1: 1 times 0 0 1 0: 2 times 0 0 1 1: 3 times | 1 1 1 1: 15 times - Brother International DCP-8085DN | Service Manual - Page 456
limitation 8 [Stop/Exit] button pressed during reception Setting and Specifications 0: OFF 1: ON 0: 400 cm 1: 90 cm 0: Not functional 1: Functional • Selector 2: ITU-T (CCITT) superfine recommendation If this selector is set to "1," the machine communicates in ITU-T (CCITT) recommended - Brother International DCP-8085DN | Service Manual - Page 457
Selector No. Function 1 Off-hook alarm 2 (Not used.) 3 Not used. 4 5 Calendar clock type 6 Not used. 7 Non-ring reception 8 Not used. Setting and Specifications No. 1 2 0 0: No alarm 0 1: Always valid 1 0: - Brother International DCP-8085DN | Service Manual - Page 458
Selector No. Function Setting and Specifications 1 Addition of registration of station ID for PC-FAX No. 2 3 2 3 Detection enabled time for CNG and no tone 0 0: 40 sec. 0 1: 0 sec. (No - Brother International DCP-8085DN | Service Manual - Page 459
low transmission speed (e.g., 4,800 bps), set the first transmission speed choice to the lower one (e.g., modify it from 12,000 bps to 7,200 bps) in order to deactivate the high-speed MODEM function and reduce the training time for shorter transmission time. Generally, to save the transmission time - Brother International DCP-8085DN | Service Manual - Page 460
Selector No. Function Setting and Specifications 1 EP* tone prefix 0: OFF 1: ON 2 Overseas communications mode (Reception) 0: 2100 Hz 1: 1100 Hz 3 Overseas communications mode (Transmission) 0: OFF 1: Ignores DIS once. No. 4 5 4 - Brother International DCP-8085DN | Service Manual - Page 461
Selector No. Function Setting and Specifications No. 1 2 3 4 5 0 0 0 0 0: No detection 1 I Max. waiting time for voice signal (Not used.) 5 0 0 0 0 1: 1 sec. 0 0 0 1 0: 2 sec. 0 0 0 1 1: 3 sec. | 0 0 1 1 0: 6 sec. (Default) | 1 1 1 1 1: 31 sec. No. 6 7 0 0: Enable (signaling - Brother International DCP-8085DN | Service Manual - Page 462
Selector No. Function 1 ECM* in sending 2 ECM* in receiving 3 Call Waiting Caller ID (Not used.) 4 Not used. 5 Acceptable TCF bit error rate I (%) (Only at 4800 bps) 8 (Not used.) - Brother International DCP-8085DN | Service Manual - Page 463
Selector No. 1 2 3 4 5 6 7 8 Function Starting point of training check (TCF) Allowable training error rate Decoding error rate for transmission of RTN Not used. Limitation of attenuation level Setting and - Brother International DCP-8085DN | Service Manual - Page 464
Selector No. Function Setting and Specifications No. 1 2 1 2 Maximum OGM recording time (Not used.) 0 0: 15 sec. 0 1: 20 sec. 1 0: 30 sec. 1 1: 50 sec. No. 3 4 3 Time length from CML ON to 0 0: 4 - Brother International DCP-8085DN | Service Manual - Page 465
Selector No. Function Setting and Specifications No. 1 2 1 2 External TAD no-tone detection start delay time 0 0: 0 sec. 0 1: 8 sec. 1 0: 16 sec. 1 1: 24 sec. No. 3 4 3 4 External TAD no-tone detection level 0 0: - - Brother International DCP-8085DN | Service Manual - Page 466
Selector No. Function Setting and Specifications 1 Not used. 2 Dialing during document reading 3 into the temporary memory in in- 0: Disable 1: Enable memory message transmission "0," the machine waits for document reading into the memory to complete and then starts dialing. This enables the - Brother International DCP-8085DN | Service Manual - Page 467
• Selectors 6 and 7: No. of CNG cycles to be detected (when the line is connected via the external telephone in the external TAD mode, via the built-in telephone in the TAD mode, or via the machine in the automatic reception of the F/T mode) The machine interprets a CNG as an effective signal if it - Brother International DCP-8085DN | Service Manual - Page 468
Selector No. Function 1 Not used. 2 Ringer OFF setting Automatic playback of OGM 3 when switched to the TAD mode (Not used.) 4 Detection of of rings and the ringing time length to compare the detected ringing pattern with the registered distinctive one. App. 1-34 Confidential - Brother International DCP-8085DN | Service Manual - Page 469
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: 0 dB 1 I Transmission level of DTMF high-band frequency signal 3 0 0 1: +1 dB 0 1 0: +2 dB 0 1 1: +3 dB 1 0 0: 0 dB 1 0 1: -1 dB 1 1 0: -2 dB 1 1 1: -3 dB No. 4 5 6 0 0 0: 0 dB 0 0 1: +1 dB 4 0 1 0: +2 dB I - Brother International DCP-8085DN | Service Manual - Page 470
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: -47.0 dBm (A) 0 0 1: -48.5 dBm (B) 1 Prompt beep for activity report This selector determines whether or not to beep if the memory area for the activity report becomes full, for prompting you to print out the report. - Brother International DCP-8085DN | Service Manual - Page 471
1 Dial tone/busy tone detection I level during recording of ICM 3 (Not used.) 4 I Not used. 6 7 Scanning magnification adjusting function 8 Not used. Setting and Specifications No. 1 2 3 0 0 0: -38.0 dBm (A) 0 0 1: -39.5 dBm (B) 0 1 0: -41.0 dBm (C) 0 1 1: -42.5 dBm (D) 1 0 0: -44 - Brother International DCP-8085DN | Service Manual - Page 472
Drum life indication Setting and Specifications 0: 100 % 1: 75 % 0: 130 ms 1: 90 ms 0: No 1: Yes Note: • Selector 5 is applicable only to the U.S.A. models. • Selector 2: Default sets the default reduction rate to be applied if the automatic reduction function fails to record one-page data sent - Brother International DCP-8085DN | Service Manual - Page 473
Selector No. Function 1 I Not used. 4 5 Default resolution when FAX 6 scanning 7 Default contrast when FAX 8 scanning Setting and Specifications No. 5 0 0 1 1 6 0: Standard 1: Fine 0: Super fine 1: Photo No. 7 0 0 1 1 8 0: Automatic 1: Automatic 0: Super light 1: Super - Brother International DCP-8085DN | Service Manual - Page 474
No. Function Setting and Specifications No. 1 2 3 0 0 0: -48 dBm (A) 0 0 1: -50 dBm (B) 1 Detection threshold level of "no 0 1 0: -52 dBm (C) I tone" during recording of ICM 0 1 1: -54 dBm (D) 3 (Not used.) 1 0 0: -56 dBm (E) 1 0 1: -58 dBm (F) 1 1 0: -60 dBm (G) (Default) 1 1 1: -62 - Brother International DCP-8085DN | Service Manual - Page 475
Selector No. Function Setting and Specifications No. 1 2 3 Erasing time length of ICM tone 0 0 0: 0 sec. 1 recorded preceding the tone detection starting point in the 0 0 1: 1 sec. 0 1 0: 2 sec. I case of automatic - Brother International DCP-8085DN | Service Manual - Page 476
tone/busy tone during recording of ICM 0 0 1 0: 2 sec. 4 (Not used.) 0 1 0 0: 4 sec. | 1 1 1 1: 15 sec. 5 I Not used. 8 Selector No. Function Setting and Specifications 1 ECP mode* 0: ON 1: OFF 2 Recovery from Inactive PC Interface 0: Disable 1: Enable 3 PC Power-off - Brother International DCP-8085DN | Service Manual - Page 477
• Selector 1: ECP mode The ECP mode enhances the normal bidirectional communications between the machine and the connected PC for higher transmission speed throgh the parallel interface. • Selector 2: Recovery from Inactive PC Interface If the machine recognizes via the STB signal line that the - Brother International DCP-8085DN | Service Manual - Page 478
Selector No. Function Printout of the stored image 1 data of an unsent document onto an error report Erasure of the stored image 2 data of an unsent document at the time of the subsequent in- memory message transmission 3 I Not used. 8 Setting and Specifications 0: No 1: Yes - Brother International DCP-8085DN | Service Manual - Page 479
Selector No. Function Setting and Specifications 1 Setting of the equalizer 2 No. 1 2 0 0: Automatic 0 1: Automatic 1 0: Fixed the modem may step down the transmission speed from 33600 bps to 28800 bps by one-time fallback. • Selectors 5 and 6: Automatic control of modem's EQM gain for - Brother International DCP-8085DN | Service Manual - Page 480
to a low transmission speed (e.g., 24,000 bps), set the first transmission speed choice to the lower one (e.g., modify it from 31,200 bps to 26,400 bps) in order to deactivate the high-speed modem function and reduce the training time for shorter transmission time. WSW39 will be limited by selectors - Brother International DCP-8085DN | Service Manual - Page 481
Selector No. Function 1 Not used. 2 3 I Masking of symbol rate(s) 8 Setting and Specifications Not takes effect only when the V.34 mode is permitted (WSW19, selector 7) in models supporting V.34 mode. • Selectors 3 through 8: Masking of symbol rate(s) These selectors allow you - Brother International DCP-8085DN | Service Manual - Page 482
Symbol rate 2400 2800 Transmission speed (bps) 2,400 4,800 7,200 9,600 12,000 14,400 16,800 19,200 21,600 4,800 7,200 9,600 12,000 14,400 16,800 19,200 21,600 24,000 24,600 Symbol rate 3000 3200 Transmission speed (bps) 4,800 7,200 9,600 12,000 14,400 16,800 19,200 21,600 24,000 26,400 28,800 4, - Brother International DCP-8085DN | Service Manual - Page 483
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: 16 hours 0 0 1: 24 hours 1 I ON-duration of the scanning light source at room temperature 0 1 0: 12 hours 0 1 1: 8 hours 3 1 0 0: 4 hours 1 0 1: 2 hours 1 1 0: 1/6 hours 1 1 1: 0 hours 4 I-FAX relay report 0: - Brother International DCP-8085DN | Service Manual - Page 484
I-FAX relay (Not used.) 4 JBIG encoding system 5 Drum discharge detection 6 I Not used. 8 Setting and Specifications 0: OFF 1: ON 0: OFF 1: ON 0: OFF 1: ON 0: Not allowed 1: Allowed 0: ON 1: OFF Selector No. Function Setting and Specifications 1 Header for sent mail - Brother International DCP-8085DN | Service Manual - Page 485
Selector No. Function Setting and Specifications 1 I Copying speed control 5 No. 1 2 3 4 5 0 0 0 0 0: Max. 0 0 0 0 1: 1cpm | 1 1 1 1 1: 31cpm No. 6 7 8 0 0 0: Obtained compensation data ineffective 6 I 8 Effective time length of the white level compensation data obtained - Brother International DCP-8085DN | Service Manual - Page 486
controller makes the reference voltage correction during standby. (Conventionally, the correction has been made immediately before the start of actual scanning) This function takes effect in copying. Making the correction during standby may shorten the preparation time for copying. Note: • Do not - Brother International DCP-8085DN | Service Manual - Page 487
applicable to models equipped with flat-bed scanners. • Selectors 1 and 2: Monitoring the PC ON/OFF state For the related functions, refer to WSW36, selectors 2 and data stored in the EEPROM by scanning the while-level reference film attached to the inside of the scanner top cover. After long use of - Brother International DCP-8085DN | Service Manual - Page 488
No. Function Setting and telephone with CAR signal when 0: No 1: Yes caller ID service is available 0: Auto switching between high-speed 8 Switching between high models equipped with flat-bed scanners. • Selectors 3 and 4 are applicable only to models supporting pseudo-ringing of a connected - Brother International DCP-8085DN | Service Manual - Page 489
Function Setting and Specifications 1 Not used. 2 No. 3 4 5 0 0 0: 25 PCs 0 0 1: 50 PCs 3 0 1 0: 75 PCs I Number of network TWAIN PCs registered for each application 0 1 1: 100 PCs 5 1 0 0: 125 PCs 1 0 1: 150 PCs 1 1 0: 175 PCs 1 1 1: 200 PCs No. 6 7 8 0 0 0: Default period (default - Brother International DCP-8085DN | Service Manual - Page 490
Selector No. Function 1 RAM disc size in PCL/ PS 2 3 End-of- 1: 750 ms No. 6 0 0 1 1 7 0: Not adjusted 1: 80 % 0: 120 % 1: 150 % 0: No (Default) 1: Yes • Selectors 4 and 5: Command flag detection time After receiving a command flag, the machine will wait for the command that should - Brother International DCP-8085DN | Service Manual - Page 491
Selector No. Function Setting and Specifications Percentage voltage for No. 1 2 1 2 interpreting the external telephone as being hooked up (based on the network's standard voltage) 0 0: 50 % 0 1: 80 % 1 0: 30 % (Not - Brother International DCP-8085DN | Service Manual - Page 492
0 0 1: Microphone level 1 with I echo cancellation ON/OFF echo cancellation ON 7 function (Not used.) 0 1 0: Microphone level 2 with echo cancellation ON 0 1 1: Microphone level 3 with echo cancellation ON Support between nearly empty 0: Empty state detected when main unit 8 → empty when - Brother International DCP-8085DN | Service Manual - Page 493
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: Microphone level 0 with echo cancellation OFF 1 I Cordless handset microphone level and echo cancellation ON/ OFF 0 0 1: Microphone level 1 with echo cancellation ON 3 ( - Brother International DCP-8085DN | Service Manual - Page 494
Selector No. Function Setting and Specifications 1 Not used. 2 No. 3 4 3 Caller ID (number display) FSK 0 0: 0 ms receiving timing after invalid CNG detected 0: Yes 1: No 8 Decompression of JPEG compressed file (Not used.) 0: ASIC 1: Software (Default) App. 1-60 Confidential - Brother International DCP-8085DN | Service Manual - Page 495
Selector No. Function Setting and Specifications No. 1 2 1 2 PictBridge command delay time (Not used.) 0 0: 100 ms (default) 0 1: 0 ms 1 0: 50 ms 1 1: 200 ms 3 More CNG detection cycles in user-friendly reception 0: No 1: 2 more cycles 4 Cordless handset ID recovery future (Not - Brother International DCP-8085DN | Service Manual - Page 496
Selector No. Function 1 Interval of time required for I the developing bias voltage 1 1 0 0 0 : The developing bias voltage correction is performed when a print job occurs after 24 hours (default value) or later. 0 0 0 1 0 0 1 0 : The developing bias voltage correction is performed when - Brother International DCP-8085DN | Service Manual - Page 497
Switching of the display for the coverage of toner cartridge 7 PCL emulation function setting 8 Switching of the CPU sleep mode Setting and Specifications 0: Invalid 1: Valid 0: Invalid 1: Valid 0: Invalid 1: Valid 0: Enable(default) 1: Disable 0: Enable 1: Disable 0: The coverage only for the - Brother International DCP-8085DN | Service Manual - Page 498
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: 0 V 1 Caller ID judgment voltage 0 0 1: 5 V (Default) 0 1 0: 10 V I (to be distinguished from rings) 0 1 1: 15 V 3 (Not used.) 1 0 0: 20 V 1 0 1: 25 V 1 1 0: 30 V 1 1 1: Max. No. 4 5 6 0 0 0: 0 V 4 Caller - Brother International DCP-8085DN | Service Manual - Page 499
Selector No. Function Setting and Specifications No. 1 2 3 0 0 0: Invalid 1 Prevention of line interrupt during ICM recording (ratio of 0 0 1: 10 % 0 1 0: 20 % I guard tone response time to call 0 1 1: 30 % (Default) 3 end tone ON time) (Not used.) 1 0 0: 40 % 1 0 1: 50 % 1 1 - Brother International DCP-8085DN | Service Manual - Page 500
function (to minimize the effects of momentary power failure or 0: Disable 1: Enable (default) noise) • Selector 1: Frame length selection This is intended to prevent the problem the MFC to a Windows Vista-based PC. It is intended only to prevent a problem specific to Windows Vista; its default - Brother International DCP-8085DN | Service Manual - Page 501
code set. When folder/ file names stored in memory cards or USB flash memory drives contain Chinese characters, for example, those characters may function (to minimize the effects of momentary power failure or noise) Be effective only MFC8480DN/8880DN/8890DW. Selector No. Function - Brother International DCP-8085DN | Service Manual - Page 502
Selector No. Function Setting and Specifications No. 1 2 3 4 0 0 0 0: 1% (Default) 0 0 0 1: 0.5% 0 0 1 0: 3% 1 Change rate of the CCD 0 0 1 1: 5% I scanning light intensity to judge to be stable in the long time 0 1 0 0: 10% 4 mode 0 1 0 1: 15% 0 1 1 0: 20% 1 1 1 1: 100% * - Brother International DCP-8085DN | Service Manual - Page 503
20% 1 1 1 0: 10% 25% 1 1 1 1: 15% 30% * Default No. 5 6 5 6 Selection of judging function for simple scanning pages compensation 0 0: Judges according to the change rate 0 1: Not judges 1 0: the machine memory without moving the CCD unit to the designated position for scanning of the - Brother International DCP-8085DN | Service Manual - Page 504
though losses are increased, select one of others ("00: Discriminates depending on the rate of change" or "10: Discriminates every page"). Selector No. Function 1 Not used 2 3 Clock type 4 I Demo print type (Demo language) 7 8 Font support for Israel Setting and Specifications - Brother International DCP-8085DN | Service Manual - Page 505
the language Set the language displayed in the LCD. Selector No. Function 1 Default media type 2 3 Supporting of BOND paper 4 Supporting of HAGAKI paper 5 Supporting of OHP 6 Supporting of LABEL paper 7 Not used 8 Setting and Specifications No. 1 0 0 1 1 2 0: Plain Paper - Brother International DCP-8085DN | Service Manual - Page 506
pages, enter the "00010100" in binary number ("10" in decimal number). Selector No. Function 1 I CMY drum life end (Not used.) 8 Setting and Specifications Selector No. Function 1 I Fuser unit life end 8 Setting and Specifications Life value ÷ 5000 = Set value For - Brother International DCP-8085DN | Service Manual - Page 507
Selector No. Function 1 I Scanner unit life end 8 Setting and Specifications Life value ÷ 5000 = Set value For example No. 1 2 3 4 5 6 7 8 0 binary number ("10" in decimal number). Selector No. Function 1 I Paper feeding kit life end 8 Setting and Specifications Life - Brother International DCP-8085DN | Service Manual - Page 508
when set the life value to 15000 pages, enter the "00010100" in binary number ("10" in decimal number). Selector No. Function 1 I Paper feeding kit MP life end 8 Setting and Specifications Life value ÷ 5000 = Set value For example No. 1 2 3 4 5 6 7 8 0 0 0 0 0 0 0 0: Life value 5000 - Brother International DCP-8085DN | Service Manual - Page 509
APPENDIX 2 DELETION OF USER SETTING INFORMATION, etc. This appendix describes how to delete of user setting information, etc. Confidential - Brother International DCP-8085DN | Service Manual - Page 510
operation. - Your name and telephone number - Telephone directory data - Group dialing data - Dispatch history data - FAX forwarding destination data - Password - Memory data - No transfer of PC-FAX received data - Ready polling data - Timer sending data - Collective sending data - Received calls - Brother International DCP-8085DN | Service Manual - Page 511
APPENDIX 3 SERIAL NUMBERING SYSTEM This appendix describes the meaning of the serial number and property codes and the location of each label. Confidential - Brother International DCP-8085DN | Service Manual - Page 512
SERIAL NUMBERING SYSTEM Each machine has a serial number label for the machine itself and property labels for some other parts. Refer to the information below for the meaning of the serial number and property codes and the location of each label. ■ Serial number labels for the machine itself - Brother International DCP-8085DN | Service Manual - Page 513
APPENDIX 4 SCREW CATALOGUE This appendix describes the used all screws in this machine by actual size. Use this appendix when lose the screw type. Confidential - Brother International DCP-8085DN | Service Manual - Page 514
Taptite bind B Taptite bind B M3x8 Taptite bind B M3x10 Taptite bind B M4x12 Taptite cup B Taptite cup B M2x6 Taptite cup B M3x8 Taptite cup B M3x10 Taptite cup B M3x12 Taptite cup B M4x10 Taptite cup B M4x12 Taptite cup B M4x20 SCREW CATALOGUE Taptite B Taptite B M3x6 Taptite B M3x8 Taptite cup S - Brother International DCP-8085DN | Service Manual - Page 515
APPENDIX 5 REFERENCES This page provides the retrieve information. It is possible to get the instruction of the subject by just clicking on the link next page. Confidential - Brother International DCP-8085DN | Service Manual - Page 516
REFERENCES This page provides reference information. It is possible to get the full instructions of the subjects listed by just clicking on the links below. 1. Error codes (Refer to "3. ERROR CODES" in Chapter 3.) 2. Error message (Refer to "2. DISTINGUISH ERROR - Brother International DCP-8085DN | Service Manual - Page 517
APPENDIX 6 GLOSSARY This appendix describes the manual specific acronyms and technical terms are used in addition to the generally used ones. The next page contains typical acronyms and technical terms that are used throughout these manuals. Confidential - Brother International DCP-8085DN | Service Manual - Page 518
„ ACRONYMS AND TECHNICAL TERMS In this manual and the Service Manual, the manual specific acronyms and technical terms are used in addition to the generally used ones. The table below contains typical acronyms and technical terms that are used throughout these manuals. APIPA ASIC ASSY CN CPU dB - Brother International DCP-8085DN | Service Manual - Page 519
SOL Solenoid SP Spare Parts SX Simplex T1 Tray 1 TE Toner Empty THM Thermal TN Toner TR Transfer * Excluding the acronym shown on the wiring diagram or circuit diagram. App. 6-2 Confidential
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Confidential
Laser FAX/MFC
SERVICE MANUAL
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
January 2009
SM-FAX105
MODEL:
DCP-8080DN/8085DN
MFC-8480DN/8880DN/8890DW