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Brother International MFC 8500 Service Manual - Page 9

Model Name, FAX4750e, GENERAL, TELEPHONE, Yes by Search/Speed Dial key

UPC - 012502603832

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Model Name GENERAL Print Engine Modem Speed(bps) Transmission Speed(sec.) ITU-T Group Coding Method Input/Output Width ADF(pages) LCD Size On-Screen Programming Back up Clock Memory Capacity(MB) Back up Memory Memory Security Optional Memory Paper Capacity(sheets) Additional Paper Capacity(sheets) Dimensions (WxDxH) Weight Color Standby Mode PC-Fax Protocol Compliance Simultaneous Operation Data Modem Energy Star Compliance (for U.S.A.) LCD Back Light Operating Environment Temperature Humidity Power Source Power Consumption (Sleep/Standby/Peak) Toner Life (Standard Yield : TN-430) (High Yield : TN-460) Drum Life (DR-400) Bundled Cable TELEPHONE Automatic Redial Handset One-Touch Dial Speed Dial Telephone Index Speaker Phone Chain Dialing Caller ID Call Waiting Caller ID Call Waiting Ready Transfer Method PBX Feature Distinctive Ringing Hold/Mute Key Power Failure Dialing Speaker Volume Ring Volume Handset Volume Figures of One-Touch & Speed Dial Resisterable Number Of Characters FAX4750e Laser (ZLe) 33,600(Fax) Approx. 2 Super G3 MH/MR/MMR/JBIG 5.8"-8.5"/2.75"-8.5" 30 (50:Conditional *1) 16 Characters x 2 Lines Yes Yes (9 hours) 8 MB Yes ( for 4 days ) Yes Yes(16/32 Mbyte:DIMM) 250 250 (User Option) 17.1x17.4x12.7 inches 435x442x323 mm 26.4 lbs/(12 kg) Gray 1495 Yes Class 2 Yes N / A Yes N / A 10 - 32.5 degrees Centigrade 20 - 80%(without condensation) 120VAC 50/60Hz Less than 10W / 70W / 940W 3,000 A4 pages@5% 6,000 A4 pages@5% up to 20,000 pages N / A Yes Yes 32 (16x2) 200 *5 Yes N / A Yes Yes N / A Yes by Search/Speed Dial key Flash N / A Yes Yes N / A Yes (3 steps + OFF) Yes (3 steps + OFF) Yes (2 steps + 1(Hearing Amplify) step) 20 digits 15 chars FAX5750e (1/4) Laser (ZLe) 33,600(Fax) Approx. 2 Super G3 MH/MR/MMR/JBIG 5.8"-8.5"/2.75"-8.5" 30 (50:Conditional *1) 16 Characters x 2 Lines Yes Yes (9 hours) 8 MB Yes ( for 4 days ) Yes Yes(16/32 Mbyte:DIMM) 500(250+250) N/A 17.1x17.4x17.0 inches 435x442x432 mm 34.3 lbs/(15.5kg) Gray 1495 Yes Class 2 Yes N / A Yes N / A 10 - 32.5 degrees Centigrade 20 - 80%(without condensation) 120VAC 50/60Hz Less than 10W / 70W / 940W 3,000 A4 pages@5% 6,000 A4 pages@5% up to 20,000 pages N / A Yes Yes 32 (16x2) 200 *5 Yes N / A Yes Yes N / A Yes by Search/Speed Dial key Flash N / A Yes Yes N / A Yes (3 steps + OFF) Yes (3 steps + OFF) Yes (2 steps + 1(Hearing Amplify) step)) 20 digits 15 chars I - 3

Section	Page
CHAPTER I. GENERAL DESCRIPTION	6
1. EQUIPMENT OUTLINE	7
1.1 External Appearance and Weight	7
1.2 Components	7
2. SPECIFICATIONS	8
CHAPTER II. INSTALLATION	21
1. INSTALLING THE UPDATE DATA TO THE FACSIMILE MACHINE	22
2. SETTING ID CODES TO FACSIMILE MACHINES	24
CHAPTER III. THEORY OF OPERATION	26
1. OVERVIEW	27
2. MECHANISMS	28
2.1 Scanner Mechanism	29
2.1.1 Document feeding and ejecting mechanism	29
2.1.2 Scanner	29
2.2 Laser Printing Mechanism	30
2.2.1 Paper pick-up and registration mechanism	30
2.2.2 Print process mechanism	31
(1) Charging process	32
(2) Exposing process	32
(3) Developing process	33
(4) Transferring process	33
2.2.3 Heat-fixing mechanism	34
2.2.4 Paper ejecting mechanism	35
2.3 Sensors and Actuators	36
3. CONTROL ELECTRONICS	38
CHAPTER IV. DISASSEMBLY/REASSEMBLY AND LUBRICATION	40
1. DISASSEMBLY/REASSEMBLY	42
Safety Precautions	42
Preparation	43
How to Access the Object Component	43
Disassembly Order Flow	44
1.1 Rear Cover	45
1.2 Access Plates R and F	45
1.3 Control Panel ASSY	46
1.4 Panel Rear Cover and Control Panel	47
1.5 Document Feed Roller ASSY, Document Ejection Roller ASSY, and Pinch Rollers	50
1.6 CIS Unit	51
1.7 Scanner Frame ASSY (Scanner Motor, Scanner Drive Unit, Document Take-in Roller,	52
1.8 Top Cover (Exit Roller, Speaker, and Document Guides)	56
1.9 Handset Mount and Hook Switch PCB (for models equipped with a handset)	62
1.10 Paper Sub Tray	64
1.11 VC Cover, VC Bracket, and VC Connector PCB (for models supporting video capture)	65
1.12 Front Cover	66
1.13 Outer Chute and Paper Pinch Rollers	67
1.14 Main Cover	68
1.15 Switch Cover	69
1.16 Laser Unit	70
1.17 Heat-fixing Unit and FU Lamp	71
[Disassembling the heat-fixing unit]	73
1.18 Fan	85
1.19 Drive Gear ASSY and Main Motor ASSY	87
1.20 NCU Shield and NCU PCB	89
1.21 Bottom Plate, Main PCB, and Bottom Insulation Film	91
1.22 Low-voltage Power Supply PCB and Power Inlet	95
1.23 Inner Insulation Film, High-voltage Power Supply PCB, Engine PCB, and 2nd Cassette Relay PCB*	97
1.24 Toner Sensor (light-receiver) PCB and Toner Sensor (LED) PCB	99
1.25 Gears and Paper Pick-up Roller	100
1.26 Paper Feed Roller ASSY	101
1.27 Clutch Levers, Cassette Guide L, and Solenoid	102
1.28 Paper Cassette	103
1.29 Cleaning of High-voltage Contacts and Grounding Contacts	104
2. LUBRICATION	106
[ 1 ] Document feed roller ASSY and document ejection roller ASSY	106
[ 2 ] Control panel locks	107
[ 3 ] Scanner frame ASSY, document take-in roller and its shaft, and separation roller and its shaft	107
[ 4 ] Top cover	108
[ 5 ] Drive gear ASSY	109
[ 6 ] Paper cassette	110
CHAPTER V. MAINTENANCE MODE	112
1. ENTRY INTO THE MAINTENANCE MODE	113
2. LIST OF MAINTENANCE-MODE FUNCTIONS	114
3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS	116
3.1 EEPROM Parameter Initialization	116
3.2 Printout of Scanning Compensation Data	117
3.3 ADF Performance Test	119
3.4 Test Pattern 1	120
3.5 Firmware Switch Setting and Printout	121
[ A ] Firmware switch setting	121
[ B ] Printout of firmware switch data	123
3.6 Operational Check of LCD	124
3.7 Operational Check of Control Panel PCB	124
3.8 Receiver Volume Adjustment (applicable to the American version only)	126
3.9 Sensor Operational Check	127
3.10 Fine Adjustment of Scanning Start/End Position	128
3.11 CIS Scanner Area Setting	129
3.12 EEPROM Customizing	129
3.13 Display of the Equipment's Log Information	130
3.14 Equipment Error Code Indication	131
3.15 Output of Transmission Log to the Telephone Line	131
3.16 Cancellation of the Memory Security Mode (applicable to the European version only)	132
CHAPTER VI. ERROR INDICATION AND TROUBLESHOOTING	134
1. ERROR INDICATION	135
1.1 Equipment Errors	135
[ 1 ] Error messages on the LCD	135
[ 2 ] Error codes shown in the \	139
1.2 Communications Errors	141
2. TROUBLESHOOTING	151
2.1 Introduction	151
2.2 Precautions	151
2.3 Checking prior to Troubleshooting	151
2.4 Troubleshooting Procedures	153
[ 1 ] Control panel related	153
[ 2 ] Telephone related	153
[ 3 ] Communications related	154
[ 4 ] Paper/document feeding related	154
[ 5 ] Print-image related	155
Location of High-voltage Contacts and Grounding Contacts	162
Appendix 1. EEPROM Customizing Codes	164
Appendix 2. Firmware Switches (WSW)	167
Appendix 3. Circuit Diagrams	215
A. Main PCB (MFC8500)	216
B. Main PCB (MFC9660)	226
C. Engine PCB	227
D. NCU PCB	228
E. Control Panel PCB	232

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Model Name

FAX4750e

FAX5750e

GENERAL

Print Engine

Laser (ZLe)

Modem Speed(bps)

33,600(Fax)

Transmission Speed(sec.)

Approx. 2

ITU-T Group

Super G3

Coding Method

MH/MR/MMR/JBIG

Input/Output Width

5.8"-8.5"/2.75"-8.5"

ADF(pages)

30 (50:Conditional *1)

LCD Size

16 Characters x 2 Lines

On-Screen Programming

Yes

Back up Clock

Yes (9 hours)

Memory Capacity(MB)

8 MB

Back up Memory

Yes ( for 4 days )

Memory Security

Yes

Optional Memory

Yes(16/32 Mbyte:DIMM)

Paper Capacity(sheets)

250

500(250+250)

Additional Paper Capacity(sheets)

250 (User Option)

N/A

Dimensions (WxDxH)

17.1x17.4x12.7 inches

17.1x17.4x17.0 inches

435x442x323 mm

435x442x432 mm

Weight

26.4 lbs/(12 kg)

34.3 lbs/(15.5kg)

Color

Gray 1495

Standby Mode

Yes

PC-Fax Protocol Compliance

Class 2

Simultaneous Operation

Yes

Data Modem

N / A

Energy Star Compliance (for U.S.A.)

Yes

LCD Back Light

N / A

Operating Environment

Temperature

10 - 32.5 degrees Centigrade

Humidity

20 - 80%(without condensation)

Power Source

120VAC

50/60Hz

120VAC

50/60Hz

Power Consumption

Less than 10W / 70W / 940W

(Sleep/Standby/Peak)

Toner Life (Standard Yield : TN-430)

3,000 A4 pages@5%

(High Yield : TN-460)

6,000 A4 pages@5%

Drum Life

(DR-400)

up to 20,000 pages

Bundled Cable

N / A

TELEPHONE

Automatic Redial

Yes

Handset

Yes

One-Touch Dial

32 (16x2)

Speed Dial

200 *5

Telephone Index

Yes

Speaker Phone

N / A

Chain Dialing

Yes

Caller ID

Yes

Call Waiting Caller ID

N / A

Call Waiting Ready

Yes by Search/Speed Dial key

Transfer Method

Flash

PBX Feature

N / A

Distinctive Ringing

Yes

Hold/Mute Key

Yes

Power Failure Dialing

N / A

Speaker Volume

Yes (3 steps + OFF)

Ring Volume

Yes (3 steps + OFF)

Handset Volume

Yes (2 steps + 1(Hearing Amplify) step)

Yes (2 steps + 1(Hearing Amplify) step))

Figures of One-Touch & Speed Dial

20 digits

Resisterable Number Of Characters

15 chars