Lexmark T640 Service Manual

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Lexmark T640 manual table of contents:

  • Lexmark T640 | Service Manual - Page 1
    ... September 27, 2005 Lexmark™ T640, T642, and T644 4061-xx0 • Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
  • Lexmark T640 | Service Manual - Page 2
    ... to any country where such provisions are inconsistent with local law : LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY ... New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at [email protected] Lexmark may use or distribute any of the ...
  • Lexmark T640 | Service Manual - Page 3
    4061-xx0 Table of contents Laser notices ...xi Safety information ...xvii Preface ...xx Definitions ...v-...xx's)...User status and attendance messages ...Additional information...Understanding the printer operator panel ...Understanding the menus ...2-1 2-1 2-1 2-1 2-1 2-2 2-3 Table of contents iii
  • Lexmark T640 | Service Manual - Page 4
    ...On Self Test (POST) sequence ...2-4 Symptom tables ...2-5 Base printer symptoms ...2-5 High-capacity feeder (2000-sheet) ... check ...2-80 Dead machine service check ...2-80 Duplex option service check ...2-82 Envelope ... port service check ...2-116 Print quality service check ...2-116 iv Service Manual
  • Lexmark T640 | Service Manual - Page 5
    ... finisher service check ...System board service check ...Toner sensor service check ...Transfer roll service ... CACHE Test...3-8 Parallel Wrap tests ...3-8 Serial Wrap tests ...3-9 DUPLEX TESTS ...3-9 Quick Test (... Test/Clean ...3-19 Flash Test ...3-19 PRINTER SETUP ...3-20 Defaults ...3-20 Page Count ...
  • Lexmark T640 | Service Manual - Page 6
    ... cabling and connectors ...3-32 Duplex Option ...3-32 Option microcode ...3-32 Print quality troubleshooting ...3-33 Paper feed jams ...3-37 Access doors and trays ...3-37 Clearing printer jams ...3-37 250 Paper Jam Check MP Feeder ...3-38 260 Paper Jam Check Env Feeder ...3-39 vi Service Manual
  • Lexmark T640 | Service Manual - Page 7
    ...200 and 201 Paper Jam Remove Cartridge...202 Paper Jam Open Rear Door ...23x Paper Jam Open Duplex Rear Door ...270 and 280......4-4 Redrive cap cover removal ...4-5 Paper support removal...4-5 Left door removal ...4-6 Redrive... ...4-18 Laser cover removal...4-19 Bevel gear removal ...4-21 Cartridge duct...
  • Lexmark T640 | Service Manual - Page 8
    ... contact assembly removal ...4-75 System board and inner shield removal ...4-76 Toner sensor removal ...4-77 Transfer roll assembly removal ...4-77 Upper front cover ...12: Hot roll fuser ...7-24 Assembly 13: Transfer/charging ...7-26 Assembly 14: Electronics-power supplies ...7-28 viii Service Manual
  • Lexmark T640 | Service Manual - Page 9
    ...or 500-sheet drawer ...A-1 Installing a duplex unit ...A-3 Installing memory or option cards ...A-4 Accessing the printer system board ... ...A-7 Removal ...A-7 Installation ...A-8 Removing or installing a flash memory or firmware card ...A-8 Removal ...A-8 Installation ...A-9 Installing an option card...
  • Lexmark T640 | Service Manual - Page 10
    4061-xx0 Printing a directory list ...Printing confidential and held jobs ...Linking trays ...Identifying and linking output bins ...Linking output bins ... A-14 A-14 A-17 A-18 A-20 Index ...I-1 Part number index ...I-9 x Service Manual
  • Lexmark T640 | Service Manual - Page 11
    ... requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I... wavelength region of 770-795 nanometers. The laser system and printer are designed so there is... Bestimmung DHHS (Department of Health and Human Services) 21 CFR Teil J für Laserprodukte ...
  • Lexmark T640 | Service Manual - Page 12
    ... situación de servicio técnico. Declaração sobre Laser A impressora está certificada nos E.U.A. em conformidade... 770 e 795 nanómetros. O sistema e a impressora laser foram concebidos de forma a nunca existir ... feita pelo utilizador ou condições de assistência prescritas. xii Service Manual
  • Lexmark T640 | Service Manual - Page 13
    ... worden niet als ongevaarlijk aangemerkt. De printer is voorzien van een laser van klasse IIIb (3b),... van 770-795 nanometer. Het lasergedeelte en de printer zijn zo ontworpen dat bij normaal .... Printeren indeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5 milliwatt galliumarsenid laser,...
  • Lexmark T640 | Service Manual - Page 14
    ... ej hälsovådliga. Skrivaren har en inbyggd laser av Klass IIIb (3b) som består av... eller annan föreskriven serviceåtgärd. Laser-melding Skriveren er godkjent i USA etter kravene ...farlige. Skriveren inneholder internt en klasse IIIb (3b)-laser, som består av en gallium-arsenlaserenhet som avgir...
  • Lexmark T640 | Service Manual - Page 15
    4061-xx0 Japanese Laser Notice Laser notices xv
  • Lexmark T640 | Service Manual - Page 16
    4061-xx0 Korean Laser Notice xvi Service Manual
  • Lexmark T640 | Service Manual - Page 17
    ... information for this product has been prepared for use by a professional service person and is not intended to be used by others. There may...of electric shock and personal injury during disassembly and servicing of this product. Professional service personnel should understand this and take necessary...
  • Lexmark T640 | Service Manual - Page 18
    4061-xx0 Sicherheitshinweise • Die Sicherheit dieses Produkts basiert auf Tests und Zulassungen des ursprünglichen Modells • • • und bestimmter Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird vom Hersteller keine Verantwortung oder Haftung für die Sicherheit übernommen. Die ...
  • Lexmark T640 | Service Manual - Page 19
    4061-xx0 Informació de Seguretat • La seguretat d'aquest producte es basa en l'avaluació i aprovació del disseny original i els components específics. El fabricant no es fa responsable de les qüestions de seguretat si s'utilitzen peces de recanvi no autoritzades. La informació pel ...
  • Lexmark T640 | Service Manual - Page 20
    4061-xx0 Preface This manual contains maintenance procedures for service personnel. It is divided into the ... used to locate or repeat symptoms of printer problems. Repair information provides instructions for making ... if the product must receive power in order to perform the task. xx Service Manual
  • Lexmark T640 | Service Manual - Page 21
    ...compatible personal computers and to most computer networks. The Lexmark T64x laser printers are available in the following models: Model name... diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the service error codes, user status messages, user ...
  • Lexmark T640 | Service Manual - Page 22
    ... • Duplex option-250-sheet (For Lexmark T640 and Lexmark T640n) Duplex option-500-sheet (... If you attach print media handling options to the printer, it may look more like the fully configured model... one input option. If you purchased a multifunction printer (MFP) that scans, copies, and faxes, you...
  • Lexmark T640 | Service Manual - Page 23
    ... Performance speed depends on: Interface to the host (USB, serial, parallel, network) Host system and application Page complexity and content Printer options installed or selected Available printer memory Media size and type Resolution Time to first print Lexmark T640, Lexmark ...
  • Lexmark T640 | Service Manual - Page 24
    ...128MB, 256MB, and 512MB SDRAM DIMMs are available from Lexmark. The memory options are 168-pin synchronous DRAM ... options include 32MB and 64MB. Operating clearances Printer side Left and right side Front .... (137.16 cm) * Allow clearance above the printer front door clearance and for adding options,...
  • Lexmark T640 | Service Manual - Page 25
    4061-xx0 Dimensions Description Printer Lexmark T640 (base printer) Lexmark T642 (base printer) Lexmark T644 (base printer) Options Duplex 250-page option Duplex 500-page option 250-Sheet drawer 500-Sheet drawer 2,000-Sheet drawer Output ...
  • Lexmark T640 | Service Manual - Page 26
    ...requirements Average nominal power requirements for the base printer configuration (110 volt). Power levels are shown in watts (W). Maximum current is given in Amperes (A). Lexmark T640 Lexmark T640n .05 ... to 110 power converter with the 110 volt printer is not recommended. • All models are ENERGY ...
  • Lexmark T640 | Service Manual - Page 27
    4061-xx0 Environment Printer temperature and humidity • Operating - Temperature: 16 to 32° C (60... power 4.0 Bels 6.7 Bels N/M Bels 4.7 Bels 6.8 Bels N/M Bels 4.5 7.0 N/M Lexmark T642(n) Idle (standby mode) Simplex printing Duplex printing Lexmark T644(n) Idle (standby mode) Simplex printing...
  • Lexmark T640 | Service Manual - Page 28
    ... media your printer supports, refer to the Card Stock & Label Guide available on our Lexmark Web ... (option) 250-sheet tray 500-sheet tray Print media size (✓- indicates support) Dimensions (UAT - universally adjustable tray) 1-8 Service Manual StapleSmart Finisher ...
  • Lexmark T640 | Service Manual - Page 29
    ...400 UAT (option) 250-sheet tray 500-sheet tray Print media size (✓- indicates support) Dimensions (UAT - universally adjustable tray) ✓ ✓ ✓... 9.84 in.) General information 1-9 StapleSmart Finisher ✓ Multipurpose feeder Standard output bin Duplex unit (option)
  • Lexmark T640 | Service Manual - Page 30
    ... tray Print media size (✓- indicates support) Dimensions (UAT - universally adjustable tray)... applications on the printer requires a special label fuser cleaner which prevents duplexing. The label ... require a special media tray. 1-10 Service Manual Stapled ✓ StapleSmart Finisher Multipurpose...
  • Lexmark T640 | Service Manual - Page 31
    ...Bristol Tag Cover Index Bristol Tag Cover Laser printer Paper Card stock- maximum (grain...a special label fuser cleaner which prevents duplexing. 28 lb envelopes are limited to 25% ...your vinyl label converter has passed the Lexmark's criteria is available at www.lexmark.com. General information 1-11
  • Lexmark T640 | Service Manual - Page 32
    ...Index Bristol Tag Cover Transparencies Labels- maximum Laser printer Paper Dual-web paper Polyester ... special label fuser cleaner which prevents duplexing. 28 lb envelopes are limited to 25% ... vinyl label converter has passed the Lexmark's criteria is available at www.lexmark.com. 1-12 Service Manual
  • Lexmark T640 | Service Manual - Page 33
    4061-xx0 Media sizes supported in the finisher Finisher output support Dimensions Size A4 A5 JIS B5 Letter Legal Executive Folio2 Statement2 7 ¾ Envelope 9 Envelope 10 Envelope DL Envelope C5 Envelope B5 Envelope Other Envelope...
  • Lexmark T640 | Service Manual - Page 34
    4061-xx0 Media weights supported in the finisher Finisher media weight Print media Paper Card ...) Index Bristol Tag Cover Transparencies Integrated forms Laser printer Pressure sensitive area Paper base (grain ... recommended Stapled 60 to 90 g/m2 (16 to 24 lb bond) Not recommended 1-14 Service Manual
  • Lexmark T640 | Service Manual - Page 35
    ... for choosing the correct print media for your printer. Paper Transparencies Envelopes Labels Card ...Card Stock & Label Guide located on the Lexmark Web site at www.lexmark.com. The laser printing process... you have chosen is acceptable for laser printers. Weight The printer can automatically feed...
  • Lexmark T640 | Service Manual - Page 36
    ...Guide, which is available on the Lexmark Web site at www.lexmark.com. Transparencies can be fed automatically from the multipurpose ...use in laser printers. • Set the Paper Size/Type in the Paper Menu to MP Feeder, Manual... lb bond) weight. Use only new, undamaged envelopes. • 1-16 Service Manual...
  • Lexmark T640 | Service Manual - Page 37
    ...site at www.lexmark.com/publications. Note: Labels are one of the most difficult print media for laser printers....Paper Size/Type from the printer operator panel, the printer driver, the Local Printer Setup Utility... in.) strip should be removed on the leading and driver edge, and a non-oozing adhesive...
  • Lexmark T640 | Service Manual - Page 38
    ...and texture, that can significantly affect print quality. See "Supported print media" on page 1-8 for information on the preferred weight and for the...in the Paper Menu to Card Stock from the operator panel, from the printer driver, in the Local Printer Setup Utility, or from MarkVision. • Be aware...
  • Lexmark T640 | Service Manual - Page 39
    ...of any print media you are considering using with the printer before purchasing large quantities. By selecting the ... side is loaded in the source according to your simplex or duplex needs. Keep print media stored in ... mm) open-end wrench 7.0 mm nut driver Needlenose pliers Diagonal side cutters Spring...
  • Lexmark T640 | Service Manual - Page 40
    ... CRU CSU DIMM DRAM DVM EDO EEPROM EP EPROM ESD FRU GB HCIT HVPS ITC LASER LCD LED LVPS MPF MROM MS NVRAM OEM OPT PC pel POR POST PP PWM ... Module Static Random Access Memory Universally Adjustable Tray) Used Parts Return Volts alternating current Volts direct current Volt Ohmmeter 1-20 Service Manual
  • Lexmark T640 | Service Manual - Page 41
    ...printer when you lift or set the printer down. Use the service error code, user status ..." on page 2-5 "Paper tray symptoms" on page 2-6 "Duplex option symptoms" on page 2-6 "Envelope feeder... that provides the user with information that explains a problem with a print cartridge, paper jam, option, port...
  • Lexmark T640 | Service Manual - Page 42
    ... printer operator panel The operator panel on your printer is a 4-line back-lit gray scale ... pressing Stop, the message Stopping is displayed. When the printer has stopped, the status line in the operator ..., or when you want to start or cancel a job. Menu Stop Navigation buttons 2-2 Service Manual
  • Lexmark T640 | Service Manual - Page 43
    ... the printer and indicating possible printer problems you must resolve. The top line of the display is the... Reports Menu Settings Page Device Statistics Network Setup Page Network Setup Page Profiles List ... Menu Network/Ports IPv6 TCP/IP Standard Network Network Standard USB USB Front USB ...
  • Lexmark T640 | Service Manual - Page 44
    4061-xx0 Power-On Self Test (POST) sequence When you turn the printer on, it performs a Power-On Self Test. Check for correct POST functioning of... turns on. The developer drive assembly drives the developer shaft in the toner cartridge. The exit rollers turn. 11. 12. 13. 14. 15. 2-4 Service Manual
  • Lexmark T640 | Service Manual - Page 45
    ... displays all diamonds and does not complete POST. Paper feed problems-base printer or integrated 500-sheet paper tray Paper jams at exit of redrive assembly- duplex option not installed. Paper jams at ...feed service check" on page 2-112. Go to "Duplex option service check" on page 2-82. Go to...
  • Lexmark T640 | Service Manual - Page 46
    ...102. Duplex option symptoms Symptom Paper feed problem with Duplex. Paper jams at Paper Removal Tray. ... not feed properly into base printer. Action Go to "Envelope feeder service check" on page 2-84...service check" on page 2-109. Go to "Output expander service check" on page 2-110. 2-6 Service Manual
  • Lexmark T640 | Service Manual - Page 47
    ... finisher Symptom Finisher does not staple. Printer does not recognize StapleSmart Finisher Option... check" on page 2-123. Go to "StapleSmart finisher service check" on page 2-123. Go to "StapleSmart ...check" on page 2-123. Go to "StapleSmart finisher service check" on page 2-123. Go to "StapleSmart ...
  • Lexmark T640 | Service Manual - Page 48
    ... condition when you can POR the printer to temporarily recover from the error condition. Service error codes (... software error 903 .xx Paperport link driver error Interface violation by RIP Interface violation ... DC pick motor no encoder feedback Problem with transfer- transfer servo start error. ...
  • Lexmark T640 | Service Manual - Page 49
    ...,999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .04 ...999. Go to "920.xx-Cold fuser service check" on page 2-87. 920. .07 ...roll. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .11 .... Go to "920.xx-Cold fuser service check" on page 2-87. Diagnostic information...
  • Lexmark T640 | Service Manual - Page 50
    ...,999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .14 Hot...,999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .16 ...voltage. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .17 ...Go to "920.xx-Cold fuser service check" on page 2-87. 2-10 Service Manual
  • Lexmark T640 | Service Manual - Page 51
    ...,999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .24 ...999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .26 ...roll. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .31 ...999. Go to "920.xx-Cold fuser service check" on page 2-87. Diagnostic information ...
  • Lexmark T640 | Service Manual - Page 52
    ...,999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .34 Hot...,999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .36 ...voltage. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .37 ...Go to "920.xx-Cold fuser service check" on page 2-87. 2-12 Service Manual
  • Lexmark T640 | Service Manual - Page 53
    ...999. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .44 ...voltage. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .47 ...roll. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .51.... Go to "920.xx-Cold fuser service check" on page 2-87. Diagnostic information...
  • Lexmark T640 | Service Manual - Page 54
    ...,000. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .54 Hot...,000. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .56 ...voltage. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .57 ...Go to "920.xx-Cold fuser service check" on page 2-87. 2-14 Service Manual
  • Lexmark T640 | Service Manual - Page 55
    ... available. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .94 ...available. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .96 ...voltage. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .97 .... Go to "920.xx-Cold fuser service check" on page 2-87. 922 .02...
  • Lexmark T640 | Service Manual - Page 56
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 922 Sub codes .03 Display text Hot roll reached final lamp detection temperature but took longer than .... 922 .14 Go to "922.xx-Cold fuser check" on page 2-89. 922 .15 Go to "922.xx-Cold fuser check" on page 2-89. 2-16 Service Manual
  • Lexmark T640 | Service Manual - Page 57
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 922 Sub codes .16 Display text Hot roll did not reach operating temperature in time (new enhanced control). Fuser page count between 100,000 and 199,999. Fuser has taken too long to reach desired temperature after increasing interpage gap...
  • Lexmark T640 | Service Manual - Page 58
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 922 Sub codes .32 Display text Hot roll took too long to reach the beginning lamp detection ... page 2-89. 922 .42 Go to "922.xx-Cold fuser check" on page 2-89. 922 .43 Go to "922.xx-Cold fuser check" on page 2-89. 2-18 Service Manual
  • Lexmark T640 | Service Manual - Page 59
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 922 Sub codes .44 Display text Hot roll timed out in trying to reach the final lamp detection temperature. Fuser page count between 400,000 and 499,999. After hot roll lamp detection, did not roll over to steady state control in time. ...
  • Lexmark T640 | Service Manual - Page 60
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 922 Sub codes .56 Display text Hot roll did not reach operating temperature ... to reach desired temperature after increasing interpage gap. Fuser page count not available. Go to "922.xx-Cold fuser check" on page 2-89. 2-20 Service Manual
  • Lexmark T640 | Service Manual - Page 61
    ... available. Go to "923.xx-Hot fuser service check" on page 2-90. 923 .21 Go ...,999. Go to "924.xx-Hot fuser service check" on page 2-91. 924 .11 Go to "924.xx-Hot fuser service check" on page 2-91. 924 .21 Go....31 Go to "924.xx-Hot fuser service check" on page 2-91. Diagnostic information ...
  • Lexmark T640 | Service Manual - Page 62
    ... actually open. • 115 V lamp in 220 V printer. • Lamp has excessive wattage. Action... Go to "924.xx-Hot fuser service check" on page 2-91. 924 .91... fuser service check" on page 2-91. 925 .11 • 115 V lamp in 220 V printer... to "925.xx-Hot fuser service check" on page 2-91. 2-22 Service Manual...
  • Lexmark T640 | Service Manual - Page 63
    ...chip have been disabled due to a previous write failure. Service fan error. Description Attempting to POR machine after ...925.xx-Hot fuser service check" on page 2-91. 925 .41 • 115 V lamp in 220 V printer. • ... Fan may not turn due to internal fan problem. Go to "Main fan" on page 2-76. 927 ....
  • Lexmark T640 | Service Manual - Page 64
    ... is at maximum in fan control adjustment state. Toner sensor error-a problem has been detected with the ... system board • Check toner cartridge. • Check toner sensor Go to "Toner sensor service check" on ... Mirror motor lost lock Go to "Printhead service check" on page 2-122. 2-24 Service Manual
  • Lexmark T640 | Service Manual - Page 65
    ...motor ID. Motor is type 0. Go to "Main drive service check" on page 2-105. Go to "Main drive ...motor start. Motor is type 1. Go to "Main drive service check" on page 2-105. 936 .9 Stall detected... control. Motor is type 1. Go to "Main drive service check" on page 2-105. Diagnostic information 2-...
  • Lexmark T640 | Service Manual - Page 66
    ... lock detected by higher level code. Motor is type 1. Driver over temperature detection. Motor is type 0. RIP... service check" on page 2-105. Go to "Main drive service check" on page 2-105. Go to "Main drive service... .80 Go to"Main drive service check" on page 2-105. POR the printer several times, if...
  • Lexmark T640 | Service Manual - Page 67
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 949 Sub ... listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or ... listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not ...
  • Lexmark T640 | Service Manual - Page 68
    .... Warning: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not be used in another printer. It must be returned to the manufacturer. 2-28 Service Manual
  • Lexmark T640 | Service Manual - Page 69
    4061-xx0 Service error codes (9xx.xx) (continued) Error code 954 Sub ... listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or ... listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not ...
  • Lexmark T640 | Service Manual - Page 70
    ... errors 980 thru 984 can be one of the following: system board, duplex, tray x (1, 2, 3, 4, or 5), envelope feeder or output bin. Action Service errors 980 thru 984 ... bin. 990 .00 991 .00 Device system card failed basic assurance test 2-30 Service Manual
  • Lexmark T640 | Service Manual - Page 71
    ... whenever the upper front door is opened, and Toner Low displays again if the condition exists... clear when tray 1 is inserted, go to "Parallel port service check" on page 2-116. If Tray 2... and the appropriate status, if any, displays. The printer cannot detect when the envelope feeder or multipurpose ...
  • Lexmark T640 | Service Manual - Page 72
    ... for the engine and cartridge code. Note: This message may help diagnose a potential printer problem. Change This message displays when the.... Change Change Change 2-32 Service Manual
  • Lexmark T640 | Service Manual - Page 73
    ... jam or to remove the option. • The duplex option may be attached to the printer but a communications problem may ... option service check" on page 2-82. Check Tray x Connection Tray x=Tray 2, Tray ... when the cover is closed, go to "StapleSmart finisher service check" on page 2-123. When the user has ...
  • Lexmark T640 | Service Manual - Page 74
    ...message is displayed when the hole punch alarm is on and the printer informed by the code the hole punch box ...finisher service check" on page 2-123. Insert Cartridge or Close Door This message displays when the printer ... and the Load Staples may display. Insert Staple Cartridge 2-34 Service Manual...
  • Lexmark T640 | Service Manual - Page 75
    ... If the message cannot be cleared, go to "Paper size sensing service check" on page 2-113 or "Input tray(s) service check" ...Duplex or Cancel Job This message is displayed when a duplex option has been hot unplugged. The printer requires the reinstallation of the option to print a page which has been ...
  • Lexmark T640 | Service Manual - Page 76
    ... feeder has been hot unplugged. The printer requires the reinstallation of the feeder to print a page ... one of the following: - Cancel Job - Reset Printer - Reset Active Bin If the message ...: • Press • Press to restart the priming operation. or to cancel the priming operation. 2-36 Service Manual...
  • Lexmark T640 | Service Manual - Page 77
    .... • If the device is experiencing a hardware problem, turn the printer off and on. If the message continues to be displayed, go to "Input tray(s) service check" on page 2-102. Reattach Envelope ... continues to be displayed, go to"Output expander service check" on page 2-110. Diagnostic information...
  • Lexmark T640 | Service Manual - Page 78
    ...detected. It may take the printer 10-20 seconds to determine if the print cartridge is supported. Depending on the setting of the Machine Class ID the printer... this does not fix the problem, go to "Signature button assembly service check" on page 2-122. The printer determines the paper...
  • Lexmark T640 | Service Manual - Page 79
    ... Memory Description/action This message displays when the printer memory used to restore the Print and ... or all of the jobs could not be restored. The printer ran out of memory while attempting to... continues. Flash operations are not allowed until the problem is resolved. Diagnostic information 2-39
  • Lexmark T640 | Service Manual - Page 80
    ... is formatted. This error displays when a network port is detected, but the printer cannot establish communications ... errors is suppressed until the menus are entered or the printer is reset. The following actions may be taken:... Port x Disabled 56 .xx Standard USB Port Disabled 2-40 Service Manual...
  • Lexmark T640 | Service Manual - Page 81
    ..., reporting of further errors is suppressed until the menus are entered, or the printer is reset. The following actions may be taken: • Press to ... 56 .xx Parallel Port x Disabled This error is displayed when data is sent to the printer across the parallel port, but the parallel port indicated has ...
  • Lexmark T640 | Service Manual - Page 82
    ... unplug the option. 59 .xx Incompatible Duplex An incompatible duplex option is installed. Remove the incompatible duplex ... disabled. No other printer functions are affected. The correct IPDS emulation must be downloaded. 62 .... Toner Low 1565 .xx Emul Error Load Emul Option 2-42 Service Manual
  • Lexmark T640 | Service Manual - Page 83
    ...Serial Port, if available. Serial Port is attached to PCI connector x, where x=1, 2, or 3. Network card x is attached to PCI connector x, where x=1, 2, or 3. LocalTalk Card x is ...removed. Once the job is complete, turn off the printer and attach the option again. The duplex front access cover is not ...
  • Lexmark T640 | Service Manual - Page 84
    ...paper jams and paper handling errors (2xx.xx) When the printer jams, the appropriate jam message will be displayed on the... Areas Show Areas Show Duplex Show Rear Door Show Finisher 1. Open manual feed door. ... paper jam does not fix the problem, go to "Input sensor service check" on page 2-102. • ...
  • Lexmark T640 | Service Manual - Page 85
    ... is found with motor connections, go to "Main drive service check" on page 2-105. Go to "Printhead service ... fuser entry guide for toner build up. • Check fuser for wear or contamination. If problem is ... not receive proper motor feedback to start laser servo. Motor connections 200 .10 Printhead ...
  • Lexmark T640 | Service Manual - Page 86
    .... • If no problem with wear or contamination is found, go to "Fuser exit sensor service check" on ... detection (engine settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser narrow media... 100,000 and 199,999. Main drive motor not working. 2-46 Service Manual
  • Lexmark T640 | Service Manual - Page 87
    ... not functioning correctly. Action • Check fuser entry guide for toner build up. • Check fuser for ... (engine settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser narrow ...and system board. If no problem is found, go to "Main drive service check" on page 2-...
  • Lexmark T640 | Service Manual - Page 88
    ... detection (engine settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser narrow media ... and system board. If no problem is found, go to "Main drive service check" on page 2-105.... between 300,000 and 399,999. Main drive motor not working. 2-48 Service Manual
  • Lexmark T640 | Service Manual - Page 89
    ... functioning correctly. Action • Check the fuser entry guide for toner build up. • Check the fuser for ... (engine settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser narrow... system board. If no problem is found, go to "Main drive service check" on page 2-...
  • Lexmark T640 | Service Manual - Page 90
    ... detection (engine settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser narrow media ... and system board. If not problem is found, go to "Main drive service check" on page 2-105.... at 500,000 to preserve data. Main drive motor not working. 2-50 Service Manual
  • Lexmark T640 | Service Manual - Page 91
    ... functioning correctly. Action • Check the fuser entry guide for toner build up. • Check the fuser for ...(engine settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser narrow... system board. If not problem is found, go to "Main drive service check" on page 2-...
  • Lexmark T640 | Service Manual - Page 92
    ...guide for toner build up. • Check the fuser for wear or contamination. If a problem is found, replace ... settings 3 = 16). In Diagnostics mode, select PRINTER SETUP and Engine Setting 3. • The fuser ... functioning correctly. • Actual page is narrow when wide page was expected. 2-52 Service Manual...
  • Lexmark T640 | Service Manual - Page 93
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .01 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 94
    ... not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser for any ... assembly. 202 .04 Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and area ...a covered position. A page may not have been cleared from a prior jam. 2-54 Service Manual
  • Lexmark T640 | Service Manual - Page 95
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .11 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 96
    ... be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and area... and 199,999. Go to "Fuser exit sensor service check" on page 2-92. 202 .16 Something is...area around the fuser assembly for any signs of debris or pieces of paper or media. 2-56 Service Manual
  • Lexmark T640 | Service Manual - Page 97
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .21 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 98
    ...be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and ...• If page is not visible from front or rear of the printer, a partial piece of page may be torn off... around the fuser assembly for any signs of debris or pieces of paper or media. 2-58 Service Manual
  • Lexmark T640 | Service Manual - Page 99
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .31 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 100
    ...be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and ... If page is not visible from front or rear of the printer, a partial piece of a page may be torn off ... around the fuser assembly for any signs of debris or pieces of paper or media. 2-60 Service Manual
  • Lexmark T640 | Service Manual - Page 101
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .41 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 102
    ...be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and ... If page is not visible from front or rear of the printer, a partial piece of a page may be torn off ... around the fuser assembly for any signs of debris or pieces of paper or media. 2-62 Service Manual
  • Lexmark T640 | Service Manual - Page 103
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .51 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 104
    ...be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and ... If page is not visible from front or rear of the printer, a partial piece of a page may be torn off ... around the fuser assembly for any signs of debris or pieces of paper or media. 2-64 Service Manual
  • Lexmark T640 | Service Manual - Page 105
    ... fuser exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. • Make sure the redrive door is complete closed. ... exit sensor may not be functioning properly. Go to "Fuser exit sensor service check" on page 2-92. 202 .91 Page did not cleanly exit fuser ...
  • Lexmark T640 | Service Manual - Page 106
    .... • If page is not visible from front or rear of the printer, a partial piece of a page may be torn off in ... is not available. Go to "Fuser exit sensor service check" on page 2-92. Check the fuser and area ...a covered position. A page may not have been cleared from a prior jam. 2-66 Service Manual
  • Lexmark T640 | Service Manual - Page 107
    ... binding parts. Repair the redrive as necessary. • Check duplex unit for correct installation and alignment to... panel" on page 2-83. • Make sure the duplex assembly rear door is properly latched...." on page 2-83. Check the media coming from the printer to the duplex option is not damaged or skewed....
  • Lexmark T640 | Service Manual - Page 108
    ...replace the duplex option. If the tests pass, retry to feed from the printer through the duplex option. If the problem is still present, replace the duplex option. • Make...fully latched. • Printer PTO not driving duplex feed rolls. • Duplex feed system not working correctly. 2-68 Service Manual
  • Lexmark T640 | Service Manual - Page 109
    ...Duplex input and exit sensors covered. • Media left in the duplex and Continue selected. • Sensor is having mechanical or electrical problems. 238 .04 Duplex doublefeed sensor covered. • Media left in the duplex and Continue selected. • Sensor is having mechanical or ...
  • Lexmark T640 | Service Manual - Page 110
    ... are covered. Possible causes • Media left in the duplex and Continue selected. • Sensor is having ... Input Source Read on a page to be picked from the duplex unit that is waiting on a page to pass the input .... If no problem is found with the cables, replace the duplex option. 2-70 Service Manual
  • Lexmark T640 | Service Manual - Page 111
    4061-xx0 User attendance messages-paper jams and paper handling errors (2xx.xx) Error code 241 Sub codes .10 Description Page was not properly picked from tray 1. Possible causes Failure to feed possible causes include: • Edge locking • Worn or contaminated pick tires • Overfilling of tray ...
  • Lexmark T640 | Service Manual - Page 112
    ...NVRAM. Go to "Configuration ID" on page 3-21. Review the following information before performing any ... one or more output options as installed Service tip: If more than a single... printer autoconnect system is operating correctly and the problem is in the unrecognized option. Continue with this service...
  • Lexmark T640 | Service Manual - Page 113
    ...4 displays Service tip: When a 274.xx Paper Jam Check Bin 4 message displays, a problem exists ...the bin x sensor. If this does not fix the problem, replace the control board. Note: This sensor is ... bin x sensor. If this does not fix the problem, replace the control board. Diagnostic information 2-...
  • Lexmark T640 | Service Manual - Page 114
    ... the bin x sensor. If this does not fix the problem, replace the control board. Bin x sensor Bin x... 3 Mechanical linkage Motor assembly 990.xx Service Error displays FRU 1 Mechanical linkage DC motor...control board. If correct, replace the mechanical linkage/ DC motor assembly. 2-74 Service Manual
  • Lexmark T640 | Service Manual - Page 115
    4061-xx0 900.xx Error code service check FRU 1 Printer POR System board Action Turn ... list of Sub Error Codes on the display. Check the "Base printer sub error codes" on page 2-9. If none of ... listed, then call your next level of support or call Lexmark. 2 3 Factory defaults 4 Sub error codes ...
  • Lexmark T640 | Service Manual - Page 116
    4061-xx0 927.xx Fan service check 927.xx can be used for ... Cartridge fan-927.02 Main fan Service tip: The main fan runs at full speed ... any is found, remove and retry the printer. If no problem is found, go to step 3.... See "System board and inner shield removal" on page 4-76. 2 3 2-76 Service Manual
  • Lexmark T640 | Service Manual - Page 117
    ... a POR after installing each one or the printer will be rendered inoperable. Warning: Never install... above as a method of troubleshooting components. Once a component has been installed in a printer, it can... remains, contact your next level of support. 2 3 Interconnect card 4 operator panel board...
  • Lexmark T640 | Service Manual - Page 118
    ... listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not...(network) 4061-400 (non-network) 4061-410 (network) Board bar code Q0016021 Q0016001... error remains, go to step 5. 2 System board 3 Interconnect card assembly 2-78 Service Manual
  • Lexmark T640 | Service Manual - Page 119
    ... interconnect card assembly. If the problem remains, contact the next level of support. Replace the original ...be caused by a damaged or contaminated dual charge roll. Service tip: Make sure the right charge ... roll bearing and remove the roll from the printer. Leave the paper wrapped around the charge ...
  • Lexmark T640 | Service Manual - Page 120
    ... Make sure the cover closed switch activation tab on the toner cartridge is not broken and that the tab correctly ... feeder input tray service check" on page 2-95. If the base printer continues to not operate ... cord and replace if necessary. If the cord is correct, go to step 3. 2 2-80 Service Manual
  • Lexmark T640 | Service Manual - Page 121
    ...voltage power supply removal" on page 4-54 6 Features or option installed on the interconnect card assembly ... the AC line cord, remove the LVPS from the printer, and check the continuity of fuse F1.... option installed on the system board until the problem is located. Warning: When removing any card ...
  • Lexmark T640 | Service Manual - Page 122
    ... the duplex exit sensor. A duplexed sheet did not reach the printer input sensor. A piece of .... If no problem is found, replace the duplex option. Note: Before proceeding with the following service checks, ... dog-eared or damaged in any way. See "Media specifications" on page 1-8. 2-82 Service Manual
  • Lexmark T640 | Service Manual - Page 123
    ... and any signs of damage. If the problem is prior to the duplex input sensor and in the base ... clear the sensor, make sure the sensor is connected to the duplex system board. If connected correctly, check for correct operation of the sensor. If a problem is found and cannot be corrected, replace the ...
  • Lexmark T640 | Service Manual - Page 124
    ... FRU 1 Envelope feeder Front autoconnect on printer Action Make sure the envelope feeder... installed and mated to the autoconnect at the front of the printer. Check the connector for signs of damage to the connector... this does not fix the problem, replace the envelope system board. 2-84 Service Manual...
  • Lexmark T640 | Service Manual - Page 125
    ... Load Envelopes after envelopes are placed in the hopper Service tip: The kick rolls rotate during ...Check the deflector gap adjustment before continuing this service check. FRU 1 Deflector gap adjustment ... close to the envelopes in the hopper. If the edge guide is damaged or does not operate properly,...
  • Lexmark T640 | Service Manual - Page 126
    ...oil, grease, or other contamination. If you find a problem, clean the rolls. If this does not correct ...the feeder and an envelope also stopped in the base printer paper path FRU 1 Latch lever Action ...no problem is found and the problem persists, replace the envelope feeder option. 2-86 Service Manual
  • Lexmark T640 | Service Manual - Page 127
    ...use caution if the printer must receive power in order to perform the task. Service tip:...multiple sheets of paper being fed up to the fuser. Service tip: Set the Fuser Temperature to NORMAL ...Observe the lamp through the left near side of the printer. It may be necessary to remove the redrive assembly ...
  • Lexmark T640 | Service Manual - Page 128
    ... at J1 on the fuser control card. If no problem is found, check the fuser to system board cable for ... or installed properly, reseat the cable and retry the printer. If the cable is installed correctly, replace the ... LVPS System board System board to LVPS cable 8 Fuser assembly 2-88 Service Manual
  • Lexmark T640 | Service Manual - Page 129
    ... or use caution if the printer must receive power in order to perform the task. Service tip: ... safety precautions. Disconnect the AC line cord from the printer. Disconnect the LVPS to fuser cable from the fuser to ... J1 on the fuser control card. If no problem is found, check the fuser to system board ...
  • Lexmark T640 | Service Manual - Page 130
    ... may be hot, use caution before removing or servicing. CAUTION: There is a danger from hazardous voltage in ..., replace the thermistor. If no problem is found, go to step 2. Turn the printer off and disconnect ... cover assembly (thermistor) 3 System board Fuser top cover assembly 2-90 Service Manual
  • Lexmark T640 | Service Manual - Page 131
    ...: .The fuser may be hot, use caution before removing or servicing. CAUTION: There is a danger from hazardous voltage in the area of the printer where you are working. Unplug the printer before you begin, or use caution if the printer must receive power in order to perform the task. ...
  • Lexmark T640 | Service Manual - Page 132
    ... exit sensor service check If any of the following codes are displayed, there is a potential problem in... removal" on page 4-76. With the redrive assembly removed from the printer, enter the Diagnostics mode and run the... cable Fuser board Fuser to system board cable System board 5 2-92 Service Manual
  • Lexmark T640 | Service Manual - Page 133
    ... media sensor service check If any of the following error codes are displayed, a problem may ... removal" on page 4-76. With the redrive assembly removed from the printer, enter Diagnostics mode and run ... in the fuser or any signs of toner or other contamination. If a problem is found, clean or remove ...
  • Lexmark T640 | Service Manual - Page 134
    ...Fuser solenoid service check CAUTION: There is a danger from hazardous voltage in the area of the printer where you ... setting. A different setting may correct the problem. Note: Check the fuser envelope conditioner.... 3 LVPS 4 Fuser board to system board cable Fuser assembly 5 2-94 Service Manual...
  • Lexmark T640 | Service Manual - Page 135
    ... feeder attached to the base printer to obtain accurate results. Service tip: Be sure the paper ... to be sure they are operating correctly. The base printer indicates a dead machine condition when the high-... the AC cable to the input of the LVPS. 2 3 Base printer or option mounted above LVPS Option ...
  • Lexmark T640 | Service Manual - Page 136
    ... +24 V dc. If incorrect, check the autoconnect system for any problems. +24 V dc must come from the base printer through the autoconnect system to the high-capacity input for the ... the switch cable. Paper low switch Paper low switch cable High-capacity feeder Input system board 2-96 Service Manual
  • Lexmark T640 | Service Manual - Page 137
    ...does not operate. The tray moves to the upper position Service tip: Open the high-capacity feeder front ... does not reach the pass thru sensor Service tip: Be sure the paper in tray is within ... autocompensator pick arm rollers for sign of glazing, toner or other buildup. Replace as necessary. Check the...
  • Lexmark T640 | Service Manual - Page 138
    ... elevator tray does not move up or down; the printer recognizes that the option is installed FRU 1 DC drive ... between each pin and the motor housing. If a problem is found, replace the motor assembly. If no .... If incorrect, replace the motor. If correct, replace the system board. 2-98 Service Manual
  • Lexmark T640 | Service Manual - Page 139
    4061-xx0 Paper size switch not selecting paper size that is selected FRU 1 Paper size switch High-capacity feeder option control board Action Check for continuity between the common pin (J5-1) and the pin of the paper size selected. Pin J5-1 J5-2 J5-3 J5-4 J5-5 J5-6 J5-7 Color Black Blue Green ...
  • Lexmark T640 | Service Manual - Page 140
    ... and the machine is configured correctly before attempting to service the high-capacity output stacker option. ... locations at J6 for the upper and lower units. Problems with excessive static electricity buildup FRU 1...Also check to make sure the ESD brush is not loose or damaged. 2-100 Service Manual
  • Lexmark T640 | Service Manual - Page 141
    ...bin autoconnect located on the top left rear of the printer. Go to "Autoconnect" on page 5-6. If the voltages ...out of the redrive assembly Service tip: For this type of problem check the "Base printer sub error... assembly. If this does not fix the problem, replace the highcapacity output stacker option...
  • Lexmark T640 | Service Manual - Page 142
    ... changes from open to closed as the sensor flag is manually moved in and out of the sensor. FRU ... for damage and proper operation. If a problem is found, repair as necessary. Check for approximately ... x, x= displays the number of the tray that has a problem or needs service. FRU 1 Tray x Option system...
  • Lexmark T640 | Service Manual - Page 143
    ...paper jammed over the pass thru sensor (The printer displays the value of x for the paper tray where the error ... assembly. If this does not correct the problem, replace the option system board. Paper... x system board Action Check the autoconnect from the printer or option above tray x. Check for cuts...
  • Lexmark T640 | Service Manual - Page 144
    ... pick arm rollers for any sign of glazing, toner or other buildup. Clean or replace as necessary. ... above as a method of troubleshooting components. Once a component has been installed in a printer, it can not be used in another printer. It must be returned to the manufacturer. 2-104 Service Manual
  • Lexmark T640 | Service Manual - Page 145
    ... or vibration. Determine if the noise is in the main drive, toner cartridge, fuser, or main drive gearbox. Look..., main drive gearbox, or fuser. Repair as necessary. A service error code 936 - Transport Motor may ... system board. If this does not fix the problem, replace the main drive motor. Check the ...
  • Lexmark T640 | Service Manual - Page 146
    ... listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not ...Operator panel buttons removal" on page 4-67. If the problem remains, replace the operator panel board (....00 through 950.29 EPROM mismatch failure" on page 2-77. 2-106 Service Manual
  • Lexmark T640 | Service Manual - Page 147
    ...-xx0 Operator panel display Service tip: The printer has detected a problem with the system board, ... board if POST does not complete, the printer emits 5 beeps, and stops in a continuous ... Test" on page 3-7 from the hardware tests before continuing with this service check. FRU 1 Operator panel cable ...
  • Lexmark T640 | Service Manual - Page 148
    ...controller board. Hard Disk Option Service tip: These printers support one hard disk option....you find no problem, contact your next level of support before replacing the network card. ...in slot x on the interconnect card but cannot establish communications with the network card. 2-108 Service Manual
  • Lexmark T640 | Service Manual - Page 149
    ... proper operation. If you find no problem with the sensor and flag, continue with the service check. Service...message does not display. FRU 1 System board Printer fails to display Remove Paper Standard Bin ... cable assembly. If this does not fix the problem, replace the system board. 2 Make sure the ...
  • Lexmark T640 | Service Manual - Page 150
    ... one or more output expander options as being installed Service tip: If more than a single ... then the base printer autoconnect system is operating correctly and the problem is in the unrecognized expander ..., or damaged parts. If incorrect, replace the output expander option. 2 2-110 Service Manual
  • Lexmark T640 | Service Manual - Page 151
    ... dc. If incorrect, replace the sensor assembly. If this does not fix the problem, replace the output expander option. 271.xx Paper jam - Check Bin ... = Full (Lower part of sensor assembly) P = Pass Thru Sensor 990 Service - Bin x If displayed, replace the output expander option. No indication that ...
  • Lexmark T640 | Service Manual - Page 152
    ... Motor Error go to "Main drive service check" on page 2-105. FRU 1 Alignment ...Also the autocompensator motor may be failing. If this problem continues replace the autocompensator assembly. Double .... If you find a problem, replace the autocompensator assembly. 2 Autocompensator 2-112 Service Manual...
  • Lexmark T640 | Service Manual - Page 153
    ... the surface of the pick roll or slick spots. If you find a problem, replace the pick roll assembly. Check to ensure the media that ... multipurpose tray assembly meets recommended paper specifications. Paper size sensing service check Before proceeding, check for the correct paper size loaded in the ...
  • Lexmark T640 | Service Manual - Page 154
    ...LGL A4 LTR EXEC B5 A5 2 S W 1 S S W 0 W If a problem is found, repair or replace the tray assembly. If ...3. If incorrectly installed, install and recheck the printer. Check the continuity between J26-2 on the system board and ground. It should measure approximately 0 ohms. 3 2-114 Service Manual
  • Lexmark T640 | Service Manual - Page 155
    ... make sure the parts operate correctly. If a problem is found, repair as necessary. If no problem... size that is not recognized and install the tray in the printer. Select the paper size and corresponding ... go to step 4. If the voltage changes, recheck the printer. If Tray 1Missing is still displayed, ...
  • Lexmark T640 | Service Manual - Page 156
    ... replace the controller board. Print quality service check Service tip: Before troubleshooting any print quality problems do the following: Install ... paper (20 lb). An incorrect printer driver for the installed software can cause problems. Incorrect characters could print,...
  • Lexmark T640 | Service Manual - Page 157
    ... for damage, especially the PC drum contact on the cartridge. Check the PC drum contact on the right ... the front cable harness. Generally a 93x service error is posted if the printhead assembly ...not have a mechanical shutter as previous laser printers. The printer is interlocked through the front top ...
  • Lexmark T640 | Service Manual - Page 158
    ... can be caused by rough papers, non-Lexmark toner cartridges or if the media texture is set to... may also cause background problems. Some problems occur with printers that run a large amount ...Printhead Transfer roll assembly Action The printhead on this printer cannot be cleaned. Try another printhead ...
  • Lexmark T640 | Service Manual - Page 159
    ...replace the system board. If this does not correct the problem, replace the HVPS. Print quality-banding Service tip: Banding is difficult ... primarily due to a variation in the speed of the paper as it feeds through the printer, especially in the development and transfer process. Inspect ...
  • Lexmark T640 | Service Manual - Page 160
    ...is continuity, replace the HVPS. If this does not correct the problem, replace the system board. Turn the printer off, and check the resistance between J15-7 and...assembly for toner contamination. The hot roll especially might cause toner to be retained and deposited on the page. 2-120 Service Manual
  • Lexmark T640 | Service Manual - Page 161
    ...-xx0 Print quality-light print Service tip: Check the toner saver and print ... generally caused by loose toner in the machine in the paper path being carried through the printer on the backside of the paper. ...area and run another copy. If the problem continues, replace the FRUs in the following order:...
  • Lexmark T640 | Service Manual - Page 162
    ... operating speed Signature button assembly service check Note: If you are unable ... message, be sure a Lexmark T64x print cartridge is correctly installed in the printer. The cartridge is easily .... Install another print cartridge before attempting to troubleshoot the printer. Make sure the signature ...
  • Lexmark T640 | Service Manual - Page 163
    4061-xx0 StapleSmart finisher service check Note: When removing the stapler mechanism from the option,... is the only option that is not recognized by the base printer. If the finisher is the only option not ... switch. If this does not fix the problem, replace the stapler option. Diagnostic information...
  • Lexmark T640 | Service Manual - Page 164
    ...if finisher is selected Note: When a 900.xx Service Error is displayed during POST, the failure is usually in the stapler gearbox assembly or stapler cartridge. Replace the stapler option. 281.xx ... displays Action Check the stapler assembly for broken or damaged parts. 2-124 Service Manual...
  • Lexmark T640 | Service Manual - Page 165
    ... holder Stapler assembly Action Before proceeding with the service check, gently try to remove the stapler ...If the holder is jammed in the stapler assembly: 1. Turn the printer off, and remove the right side ... Feed Test to check the option. If the problem continues, go to step 2. Check the continuity ...
  • Lexmark T640 | Service Manual - Page 166
    ...happen when pin 7 of J3 is open. System board service check Warning: When replacing any one ...listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not be used in another printer. It must be returned to the manufacturer. 2-126 Service Manual...
  • Lexmark T640 | Service Manual - Page 167
    ... service check is intended to be used when a 929.xx Service Error displays. FRU 1 Developer drive ... assembly can cause the printer to display a 929.xx error code (Toner Sensor). Check ... reads approximately +5 V dc with the system board removed from the printer. If incorrect, replace the system board. ...
  • Lexmark T640 | Service Manual - Page 168
    ...to prevent damage to the printer. FRU 1 Transfer roll assembly Action Check the transfer roll for toner ... assembly spring for proper operation. For any background problems, ensure the contact to the HVPS board is correct ... 3 Right transfer arm assembly 4 HVPS-917 Error code 2-128 Service Manual
  • Lexmark T640 | Service Manual - Page 169
    ...This chapter explains the tests and procedures to identify printer failures and verify repairs have corrected the problem. Accessing service menus ..."Diagnostics mode" on page 3-2 for more information. . 3. Turn on the printer. 4. Release the buttons when Performing Self Test displays...
  • Lexmark T640 | Service Manual - Page 170
    4061-xx0 Diagnostics mode Entering Diagnostics mode 1. Press and hold 2. Turn on the printer. 3. Release the buttons when Performing Self Test displays. and . Available ... on page 3-6 See "Input source tests" on page 3-6 See "Quick Test" on page 3-5 See "REGISTRATION" on page 3-4 3-2 Service Manual
  • Lexmark T640 | Service Manual - Page 171
    4061-xx0 Diagnostics mode tests (continued) DUPLEX TESTS (if installed) Quick Test ... Sensor Test BASE SENSOR TEST Toner Input Output DEVICE TESTS Quick ... installed) Flash Test (if installed) PRINTER SETUP Defaults Page Count Perm ...)" on page 3-10 See "Sensor Test (duplex)" on page 3-10 See "Motor Test...
  • Lexmark T640 | Service Manual - Page 172
    ... Diagnostics mode Select Exit Diagnostics to exit the Diagnostics mode. Resetting the Printer displays, the printer performs a POR, and returns to normal mode. ...Printing...appears on the display. Retain this page to determine the changes you need to make to the margins settings. 3-4 Service Manual
  • Lexmark T640 | Service Manual - Page 173
    ... Test contains the following information: ). Print registration settings Alignment diamonds at the top and bottom Horizontal lines to check for skew General printer information, including current page count, installed memory, serial number, and code level. To print the Quick Test page: Note: ...
  • Lexmark T640 | Service Manual - Page 174
    ... TESTS Input source tests The purpose of the diagnostic Print Tests is to verify that the printer can print on media from each of the installed input options. The ...Test Page always prints on one side of the paper, regardless of the duplex setting or the presence of a duplex option. Press Back ( ) to ...
  • Lexmark T640 | Service Manual - Page 175
    ... from the menu. The message DRAM Test Testing...displays. Then the message Resetting Printer appears, and the power indicator light blinks red. 2. Turn the printer off and on. While the DRAM test executes, the power indicator blinks green. The following type ...
  • Lexmark T640 | Service Manual - Page 176
    ...-xx0 CACHE Test This test is used to verify the printer processor cache. To run the CACHE Test: ... display. To stop this test before completion, turn the printer off. Parallel Wrap tests This test ...and the final results display. To stop the test before completion, press Stop ( ). 3-8 Service Manual
  • Lexmark T640 | Service Manual - Page 177
    ...Select Single or Continuous. • The single Duplex Quick test cannot be canceled. • The printer attempts to print ...source. If the default paper source only supports envelopes, then the page is printed from Tray... line on the front and back side of a duplexed sheet. The single test stops automatically...
  • Lexmark T640 | Service Manual - Page 178
    ... margin of the frontside. 2. Select Top Margin from DUPLEX TESTS. 3. Use or to select the margin setting ...) This test is used to determine whether or not the duplex sensors and switches are working correctly.... • Duplex exit sensor 3. Press Back ( ) or Stop ( ) to exit the test. 3-10 Service Manual...
  • Lexmark T640 | Service Manual - Page 179
    ... verify that the power and velocity values are acceptable. The duplex runs the DC motor at high speed ...Testing displays. 2. When the motor stops, the results are displayed. DUPLEX MOTOR AA BB CC DD ...range of 0C through 13 inclusively (hex) For the duplex drive system to pass the test, the following ...
  • Lexmark T640 | Service Manual - Page 180
    ...can be run using any of the supported paper sizes. To run the Duplex Feed 1 Test: 1. Select ... indicator turns on solid. 2. Remove the media from the duplex unit, and clear the message on the operator..., and clear the message on the operator panel by pressing Back ( ) or Stop ( ). 3-12 Service Manual...
  • Lexmark T640 | Service Manual - Page 181
    ...the servicer observe the paper path as media is feeding through the printer. A blank sheet of paper feeds through the printer as the laser turns off during this test. The ... pass thru sensor 4. Once this message displays, the servicer can manually actuate each sensor. The tray empty sensor...
  • Lexmark T640 | Service Manual - Page 182
    ... can use any media size or envelope supported by the printer. Note: If the Configure Bins printer...well as any output option bin installed on the printer is shown on the menu. (The output bins are displayed ...until Stop ( Press Back ( ) is pressed. ) to return to OUTPUT BIN TESTS. 3-14 Service Manual
  • Lexmark T640 | Service Manual - Page 183
    ...NearFull=Open • Full-Bin full sensor • NearFull-Bin near full sensor 4. Manually actuate the bin sensor by moving the flag in and out of the sensor... sensor • Full-Bin full sensor • NearFull-Bin near full sensor 3. Manually actuate each of the output expander sensors, and the display by each ...
  • Lexmark T640 | Service Manual - Page 184
    ... full sensor (upper part of dual sensor) 3. Manually actuate each of the sensors of the high-capacity stacker...NearFull for nearly full, and Full for full. 3. Manually actuate each of the sensors of the 5-bin mailbox,....Test from the OUTPUT BIN TESTS. The test runs once and stops. 3-16 Service Manual
  • Lexmark T640 | Service Manual - Page 185
    ...staple mechanism by sending eight sheets of media from the printers default paper source and stapling ...can be run using any of the paper sizes supported by the printer. To run the Feed Test, select ... of the tests displays the individual sensors that can be manually actuated, and the display shows Open...
  • Lexmark T640 | Service Manual - Page 186
    ... used to determine if the sensors located inside the printer are working correctly. To run the Base Sensor ...-Input sensor NarrowMedia-Output (exit) sensor Toner Level-Toner level sensor (remove ... turns on solid. 2. Press Back ( ) or Stop ( ) to return to the Device Tests menu. 3-18 Service Manual
  • Lexmark T640 | Service Manual - Page 187
    ... the flash to test the flash. Warning: This test destroys all data on the flash because the flash is unformatted at the end of the test. To reformat the flash, the servicer or the user must use FORMAT FLASH from the UTILITIES MENU. To run the Flash Test: 1. Select Flash Test from DEVICE TESTS. The ...
  • Lexmark T640 | Service Manual - Page 188
    ..., Medium, or High. The default is Medium. 3. Press Back ( ) to return to PRINTER SETUP. Engine Setting 1 through 4 Warning: Do not change these settings unless requested to do so by your next level of support. Model Name The model name can only be viewed and cannot be changed. 3-20 Service Manual
  • Lexmark T640 | Service Manual - Page 189
    ...The two configuration IDs are used to communicate information about certain areas of the printer that cannot be determined using hardware sensors. The configuration IDs are originally set at the factory when the printer is manufactured, however the servicer may need to reset Configuration ID 1 ...
  • Lexmark T640 | Service Manual - Page 190
    ...Sometimes this is used to help correct print quality problems. To restore EP Defaults: 1. Select EP ... reduce curl in some environments. ) to return to PRINTER SETUP. Transfer The transfer can be adjusted ... per minute. The range of values is 0 to 255, and the default value is 0. 3-22 Service Manual...
  • Lexmark T640 | Service Manual - Page 191
    ...Display Log The event log provides a history of printer errors. It contains the 12 most recent ... Log printed from DIAGNOSTICS includes: Detailed printer information, including code versions Time ... log can be faxed to Lexmark or your next level of support for verification or diagnosis. Diagnostic...
  • Lexmark T640 | Service Manual - Page 192
    ... Back ( ) to return to EVENT LOG. EXIT DIAGNOSTICS This selection exits Diagnostics mode, and Resetting the Printer displays. The printer performs a POR, and the printer returns to normal mode. 3-24 Service Manual
  • Lexmark T640 | Service Manual - Page 193
    ... print job containing a single page increments the counter by one and a duplex page by two. At 300,000, the customer is reminded that the printer requires scheduled maintenance. This counter is reset by the servicer after a 80 Scheduled Maintenance message displays and a ...
  • Lexmark T640 | Service Manual - Page 194
    ...momentarily. When the reset operation is complete, the menu returns to the Printer Setup Reset Maintenance Count screen....graphics. Page four is blank. If duplex is turned on, the pages are duplexed. The Print Quality Test ... and must always be printed on letter, legal, or A4 paper. 3-26 Service Manual...
  • Lexmark T640 | Service Manual - Page 195
    ...xx0 SIZE SENSING This setting controls whether the printer automatically registers the size of paper installed ...2000-sheet drawer 250-sheet duplex 500-sheet duplex Envelope feeder When the setting ... print, and files received across the network or from the host computer are ignored. Diagnostic aids ...
  • Lexmark T640 | Service Manual - Page 196
    ... Defaults This setting enables a user to restore all the printer settings to the original factory settings. Selections ...and Restore Network. Network does not appear unless you have a network printer....Enable. Warning: Whenever this value is changed, data on the hard disk is erased. 3-28 Service Manual
  • Lexmark T640 | Service Manual - Page 197
    ... of values is between 1 and 10, and the default value is 5. Exit Config Menu Press to exit the CONFIG MENU. The message Resetting the Printer displays, and the printer performs a POR and restarts in normal mode. Additional useful menu locations User menus are available from the Ready state by ...
  • Lexmark T640 | Service Manual - Page 198
    ... You can print a menu settings page to review the default printer settings and to verify your printer ... paper trays, envelope feeder, duplex option, output bins, flash, or disk. • Printer information such as ... operator panel code levels, font ROM version, and SRAM availability. 3-30 Service Manual
  • Lexmark T640 | Service Manual - Page 199
    ... the autocompensating phenomena. This spring is not to be considered an adjustment for feeding problems unless it is obvious that the pick arm cannot fall all the... or sticky near the bottom of the tray, these springs may be the problem. Reducing the tension on the counterbalance spring may be used as...
  • Lexmark T640 | Service Manual - Page 200
    ...no external cables when the option is mechanically installed under the printer. Communication between the option and the base ... option receives the +24 V dc from the base printer for the duplex motors and also converts ..., sensor status, motor status, and so on to the base printer. 3-32 Service Manual
  • Lexmark T640 | Service Manual - Page 201
    ... of print quality problem exists, see the Troubleshooting chapter in the User's Guide on the publications CD.... Verify you are using the correct printer drivers. Toner smears or print comes off... menu. • Verify the print media is within the printer specifications. See "Media specifications" on page...
  • Lexmark T640 | Service Manual - Page 202
    4061-xx0 Problem Toner fog or background shading appears on the page. Action • Check the print cartridge to make sure it is installed correctly. • The ... computer users should make sure the job lines per inch (lpi) setting is not set too high in the software application. 3-34 Service Manual
  • Lexmark T640 | Service Manual - Page 203
    4061-xx0 Problem Characters have jagged or uneven edges. Action • Change the Print ...information. • If you are using downloaded fonts, verify the fonts are supported by the printer, the host computer... match. • Verify you are using the correct printer drivers. Part or all of the page is printed...
  • Lexmark T640 | Service Manual - Page 204
    ... Lightens or darkens printed output and alters toner consumption Adjusts the gray value of printed ...print quality. These settings are available on the driver and on the printer Embedded Web Server (EWS)...interface. For more information about these options, see the driver Help. Enhance Fine Lines and ...
  • Lexmark T640 | Service Manual - Page 205
    ... the printer occur in the input options or the duplex tray. Jams inside the printer occur in two locations and require...print cartridge. Jams can also occur at the rear of the printer or in one of the output options. Note: The following clearing jam instructions may seem out of sequence. However, they...
  • Lexmark T640 | Service Manual - Page 206
    ..., and restack the media, and place it into the multipurpose feeder. 3. Load the print media. 4. Slide the side guide toward the inside of the tray until it lightly rests against the edge of the media. 5. Press . 3-38 Service Manual
  • Lexmark T640 | Service Manual - Page 207
    .... a. Lift the envelope feeder up out of the printer, and then set it aside. b. Remove ...If you cannot remove the envelope, the print cartridge will have to be removed. See "200 and... the envelopes. 4. Load the envelope feeder. 5. Adjust the guide. 6. Lower the envelope weight. 7. Press . Diagnostic...
  • Lexmark T640 | Service Manual - Page 208
    ...one tray. To clear these areas: 1. Open the printer paper tray, and remove any jammed media. 2. Open the duplex tray. To remove the media, pull up. 3. Open any optional trays ... either up or down. If it does not pull easily one way, try the other way. 3-40 Service Manual
  • Lexmark T640 | Service Manual - Page 209
    .... 200 and 201 Paper Jam Remove Cartridge 1. Push the release latch, and lower the... open the top front cover. CAUTION: The inside of the printer is hot. 3. Lift and pull the print ... not touch the photoconductor drum on the underside of the cartridge. Use the cartridge handle whenever you are holding ...
  • Lexmark T640 | Service Manual - Page 210
    ... print cartridge aside. Note: Do not leave the cartridge exposed to light for extended periods. Note: The ... You need to access the print media from the printer rear door. 6. Reinstall the toner cartridge. 7. Close the top front cover. 8. Close the multipurpose feeder. 9. Press . 3-42 Service Manual
  • Lexmark T640 | Service Manual - Page 211
    4061-xx0 202 Paper Jam Open Rear Door 1. If the paper is exiting the printer, pull the media straight out, and press . Otherwise continue with step 2. 2. Open the printer rear door. 3. Remove the jammed media. 4. Close the rear door. 5. Press . Diagnostic aids 3-43
  • Lexmark T640 | Service Manual - Page 212
    4061-xx0 23x Paper Jam Open Duplex Rear Door 1. Open the duplex rear door. 2. Remove the jammed media. Depending on the media location, pull the media either up or down. 3. Close the duplex rear door. Make sure it snaps into place. 4. Press . 3-44 Service Manual
  • Lexmark T640 | Service Manual - Page 213
    4061-xx0 270 and 280 Paper Jams Paper jams in this group have been divided into 27x and 28x groups. If you have an output expander, highcapacity output stacker, or the 5-bin mailbox, see "27x Paper Jam Check Bin x". If you have a finisher, see "28x Paper Jam Check Finisher". 27x Paper Jam Check ...
  • Lexmark T640 | Service Manual - Page 214
    ... finisher rear door latches in toward the center. The rear door will open and drop down. 2. Remove the jammed media. 3. Close the rear door, and make sure the door is secure. 3-46 Service Manual
  • Lexmark T640 | Service Manual - Page 215
    4061-xx0 4. Lift the front edge of the finisher output bin cover until it locks into position. 5. Remove the stack of print media. 6. Close the finisher output bin cover. 7. Press . Diagnostic aids 3-47
  • Lexmark T640 | Service Manual - Page 216
    ... message indicates staples are jammed in the stapler. This requires removing the staple cartridge holder from the printer. 1. Lift the front edge of the finisher output bin cover until it... the bottom of the cartridge holder to make sure no staples are jammed in the entry throat. 3-48 Service Manual
  • Lexmark T640 | Service Manual - Page 217
    4061-xx0 8. Press down on the staple guard until it snaps securely into place. 9. Push the cartridge holder firmly into the stapler until the cartridge holder clicks into place. 10. Close the stapler access door. 11. Close the finisher output bin cover. Diagnostic aids 3-49
  • Lexmark T640 | Service Manual - Page 218
    4061-xx0 3-50 Service Manual
  • Lexmark T640 | Service Manual - Page 219
    ... electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, follow the instructions below in addition to all the usual precautions, such as turning off power before removing logic boards: • Keep the ESD-sensitive part ...
  • Lexmark T640 | Service Manual - Page 220
    .... Adjust the fuser solenoid while installed in the printer. Adjust the screw on the eccentric mounted on the solenoid .... Note: This setting has no effect when duplexing. Printhead assembly adjustment Do the printhead ... for skew adjustment, page count setting, printer serial number code levels, and ...
  • Lexmark T640 | Service Manual - Page 221
    ...adjustment screw out far enough to allow the alignment assembly to be removed from the printer. It is not necessary to completely remove the screw. 4. Install ...alignment assembly. Turn the reference screw clockwise with a 7 mm nut driver until it touches the back of the reference plate, and tighten ...
  • Lexmark T640 | Service Manual - Page 222
    ... Removal procedures CAUTION: Remove the power cord from the printer or wall outlet before you connect ... or assembly for personal safety and to prevent damage to the printer. CAUTION: Use the handholds on the side ... together, and pull up. 2. Remove the fuser wiper cover assembly. 4-4 Service Manual
  • Lexmark T640 | Service Manual - Page 223
    4061-xx0 Redrive cap cover removal 1. Pull up on the right side of the redrive cap cover to remove. 2. Remove the redrive cap cover. Paper support removal 1. Raise the paper support, and lift to release the latches. 2. Remove the paper support. Repair information 4-5
  • Lexmark T640 | Service Manual - Page 224
    4061-xx0 Left door removal 1. Open the upper and lower front covers. 2. Press the two left door latch buttons (A), and open the left door. 3. Release the top hinge from the latch. 4-6 Service Manual
  • Lexmark T640 | Service Manual - Page 225
    4061-xx0 4. Lift the door to release the bottom from the pin (B), and remove the door. Redrive door 1. With the redrive door partially open, lift and free the left side. 2. Remove the redrive door. Repair information 4-7
  • Lexmark T640 | Service Manual - Page 226
    ... removal" on page 4-5. Open the upper and lower front covers. Remove the print cartridge. Remove the right front cover mounting screw (A). 5. Remove the redrive door. See "Redrive door" on page 4-7. 6. Remove the two screws (B). 4-8 Service Manual
  • Lexmark T640 | Service Manual - Page 227
    4061-xx0 7. Remove the right rear cover mounting screw (C). 8. Press the two latches to remove the redrive assembly. Repair information 4-9
  • Lexmark T640 | Service Manual - Page 228
    ... cover retainers (E) at the bottom. Note: When replacing the right side cover, make sure the three cover retainers are correctly located in the appropriate slots in the right side frame. 4-10 Service Manual
  • Lexmark T640 | Service Manual - Page 229
    ... second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more ... remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not be used in another printer. It...
  • Lexmark T640 | Service Manual - Page 230
    ...care not to lose or drop the clear plastic inner bezel. Installation notes: • Lift the paper support before installing the upper front cover. • Make sure the operator panel cable is in the cable clip (C), if removed. 4-12 Service Manual
  • Lexmark T640 | Service Manual - Page 231
    4061-xx0 Upper front cover latch removal 1. Remove the upper front cover. 2. Remove the screw (A) holding the latch and spring to the upper front cover. Installation note: The spring (B) is installed as shown. Repair information 4-13
  • Lexmark T640 | Service Manual - Page 232
    ...: If available, place a soft, clean cloth on the open lower front cover. The clear inner bezel (B) is not connected and may fall. The cloth may prevent scratches on the bezel. 4-14 Service Manual
  • Lexmark T640 | Service Manual - Page 233
    4061-xx0 Multipurpose feeder/lower front cover assembly removal 1. Open the multipurpose tray to a position that allows the left and right tray hinge slots (A) to align with the D-shape mounting posts (B). Pull upward on each tray hinge to remove the tray from the two mounting posts. Warning: Be ...
  • Lexmark T640 | Service Manual - Page 234
    ... the right side cover. See "Right cover removal" on page 4-8. 2. Remove the two screws (A) holding the top of the right handle holder in place. 3. Lift out the right handle holder. 4-16 Service Manual
  • Lexmark T640 | Service Manual - Page 235
    4061-xx0 Left and right frame extensions 1. 2. 3. 4. Remove the toner cartridge. Turn the printer on its back. Remove the two screws (A) holding the right frame extension. Remove the two screws (B) securing the left frame extension. Repair information 4-17
  • Lexmark T640 | Service Manual - Page 236
    ... the plate until it is loose. 4. Remove the fuser to system board DC cable (B) secured through the plate. Note: Note the routing of the fuser card to system board DC cable. 4-18 Service Manual
  • Lexmark T640 | Service Manual - Page 237
    4061-xx0 Laser cover removal 1. 2. 3. 4. 5. 6. Remove the left door. See "Left door ... removal" on page 4-8. Remove the paper support. See "Paper support removal" on page 4-5. Remove ... remove the cover. Remove the screw (A) at the rear of the printer and the larger screw (B) at the front on the right ...
  • Lexmark T640 | Service Manual - Page 238
    4061-xx0 8. Remove the paper bin full sensor flag from the mounting bracket. See "Paper bin full sensor flag removal" on page 4-70. 9. Unlatch the front right and front left cover posts, and remove the cover. 4-20 Service Manual
  • Lexmark T640 | Service Manual - Page 239
    ... 2. 3. 4. Open the left door. Remove the inner shield. Remove the gear guard. Remove the power takeoff shaft and spring (A) through the bottom of the printer. 5. Place your thumb on the top of the gear, and press firmly down and away. Note: You need to exert firm pressure to snap the bevel gear out...
  • Lexmark T640 | Service Manual - Page 240
    ...gear itself. When the gear double-snaps into place, it may pinch your hand. 5. Install the power takeoff shaft and spring. 6. Install the gear guard. 7. Install the inner shield. 4-22 Service Manual
  • Lexmark T640 | Service Manual - Page 241
    4061-xx0 Cartridge duct removal 1. Open the left door. 2. Disconnect the printhead laser cable from J2 on the system board. 3....the main fan cable (B) up and out of the way to remove the duct. 4. Reconnect the printhead laser cable. Note: Be sure to reposition the main fan cable if you moved it out ...
  • Lexmark T640 | Service Manual - Page 242
    ... motor drive shaft. 2. Place the developer drive shaft on the developer drive. 3. Align the developer drive shaft with the coupler. 4. Be sure to replace the screws in the same positions. 4-24 Service Manual
  • Lexmark T640 | Service Manual - Page 243
    4061-xx0 Developer drive coupler kit removal 1. Remove the developer drive. See "Developer drive assembly removal" on page 4-24. 2. Remove the shaft drive and coupler. ESD cover removal 1. Open the multipurpose tray, and remove the tray from the two mounting posts. See "Multipurpose feeder/ lower...
  • Lexmark T640 | Service Manual - Page 244
    4061-xx0 Fuser assembly removal CAUTION: Unplug the printer before you begin. 1. Remove the fuser wick assembly cover. See "Fuser wiper cover ...on page 4-74. 3. Remove the fuser mounting screws (A). 4. Disconnect the fuser to LVPS AC cable (B) from the fuser lamp connector (C). 4-26 Service Manual
  • Lexmark T640 | Service Manual - Page 245
    4061-xx0 5. Disconnect the fuser to system board DC cable (D) from the fuser board. Note: Be sure to observe the routing of the LVPS to fuser lamp AC and the DC cable. 6. Pull the cables free and remove the fuser. Installation notes 1. When you reinstall the fuser, be sure to route the fuser to ...
  • Lexmark T640 | Service Manual - Page 246
    ... securing the cover containing the fuser exit sensor, flag, and spring. Release the two clips (C) holding the sensor in the bracket. 5. Unplug the fuser exit sensor cable from the sensor. 4-28 Service Manual
  • Lexmark T640 | Service Manual - Page 247
    ... sensor securely into the cover. 2. Connect the fuser exit sensor cable. 3. Snap the bottom fastener of the sensor cover into place in the lower exit guide, and use a small flat bladed screwdriver to ease the sensor cover into the clips. 4. Replace the screw securing the sensor cover. Note: Make ...
  • Lexmark T640 | Service Manual - Page 248
    ...Carefully ease the right arm (C) until the fuser exit sensor cover releases the flag and spring. Spring replacement 1. Place the spring on the left pin (A). 2. Set the tang (B) on the flag. 4-30 Service Manual
  • Lexmark T640 | Service Manual - Page 249
    4061-xx0 3. Rotate the bent end (C) of the spring to add tension, place the pins between the sensor cover arms, and rest the bent end against the sensor cover frame. Note: After replacing the sensor, flag, and spring, make sure the flag moves freely and returns. Repair information 4-31
  • Lexmark T640 | Service Manual - Page 250
    ... removing the screw, as the lamp is under spring tension. When the contact is released, damage to the lamp or contact may occur. A(202) 4. Remove the left lamp contact assembly. 4-32 Service Manual
  • Lexmark T640 | Service Manual - Page 251
    4061-xx0 5. Remove the fuser lamp. Warning: The lamp is under spring tension, and care must be used when removing the lamp from the fuser. Grip the lamp by the ceramic end piece, and remove it from the fuser assembly. Be careful not to touch the glass, as skin oils and acids can reduce the life of...
  • Lexmark T640 | Service Manual - Page 252
    ... 3. With a thumbnail, release the catches (B) holding the sensor cover to the lower exit guide (C) in place. Note: You may need to move the narrow media flag out ...holding the sensor in the cover. Note: Hold the narrow media flag out of the way to remove the sensor from the cover. 4-34 Service Manual
  • Lexmark T640 | Service Manual - Page 253
    ... the sensor securely into the cover. 2. Connect the fuser narrow media cable. 3. Snap the bottom fastener of the sensor cover into place in the lower exit guide, and rock the cover up until the top fastener snaps securely. 4. Replace the screw securing the sensor cover. Repair information 4-35
  • Lexmark T640 | Service Manual - Page 254
    ... the right arm (C) of the sensor cover just far enough apart to release the flag and spring. Spring replacement 1. Place the spring on the left pin (A). 2. Set the tang (B) on the flag. 4-36 Service Manual
  • Lexmark T640 | Service Manual - Page 255
    4061-xx0 3. Rotate the bent end (C) of the spring to add tension, place the pins between the sensor cover arms, and rest the bent end against the sensor cover frame. A Note: After replacing the sensor, flag, and spring, make sure the flag moves properly. Repair information 4-37
  • Lexmark T640 | Service Manual - Page 256
    4061-xx0 Fuser to LVPS AC cable removal CAUTION: Unplug the printer before you begin. 1. 2. 3. 4. Remove the fuser wick assembly cover. See "Fuser wiper ...the pass thru plate. See "Pass thru plate" on page 4-18. 6. Disconnect the LVPS to system board DC cable (D) from the LVPS. 4-38 Service Manual
  • Lexmark T640 | Service Manual - Page 257
    4061-xx0 7. Pull the LVPS assembly far enough out from the right side of the printer to disconnect the fuser to LVPS AC cable from the LVPS (E). Note: The LVPS assembly may be difficult to remove from the printer. Do not use excessive force in the removal. 8. Remove the ...
  • Lexmark T640 | Service Manual - Page 258
    4061-xx0 3. Route the cable through the lower rectangular opening (E). 4. Connect the fuser to LVPS AC cable to the fuser lamp connector (F). Note: Be sure to connect the fuser to system board DC cable after replacing the LVPS. 4-40 Service Manual
  • Lexmark T640 | Service Manual - Page 259
    4061-xx0 Fuser top cover removal CAUTION: Unplug the printer before you begin. 1. Remove the fuser assembly. See "Fuser assembly removal" on page 4-26. 2. Note the thermistor cable routing (A) and disconnect the thermistor cable at the fuser control board. 3. Disconnect the AC fuser lamp cable ...
  • Lexmark T640 | Service Manual - Page 260
    ... (G) on the right side that attach the fuser upper cover assembly to the fuser frame. 7. Remove screw (H) that attaches the side fuser lamp contact to the fuser top cover. F H G 4-42 Service Manual
  • Lexmark T640 | Service Manual - Page 261
    4061-xx0 8. Remove the fuser cover. Fuser transfer plate removal 1. 2. 3. 4. Remove the upper paper deflector. See "Upper paper deflector assembly removal" on page 4-79. Remove the transfer roll. See "Transfer roll assembly removal" on page 4-77. Remove the inner paper deflector. See "Inner paper...
  • Lexmark T640 | Service Manual - Page 262
    ... Note: Lift the upper front cover to make it easier to remove the link. 4. Rotate the link to disconnect the link from the main drive assembly. 5. Remove the gear release link. 4-44 Service Manual
  • Lexmark T640 | Service Manual - Page 263
    4061-xx0 High voltage power supply removal CAUTION: There is a danger from hazardous voltage in the area of the printer where you are working. Unplug the printer before you begin, or use caution if the printer must receive power in order to perform the task. 1. Remove the ...
  • Lexmark T640 | Service Manual - Page 264
    4061-xx0 5. Remove the HVPS mounting screws (C). 6. Slide the HVPS to the left to release the mounting tab from the center pan, and remove the HVPS. 4-46 Service Manual
  • Lexmark T640 | Service Manual - Page 265
    ... assembly. See "MPF lower paper deflector" on page 4-61. 4. Place the printer on its side. 5. Gently pry the inner paper deflector from the left and right mounting posts (A) located on the bottom of the printer, and remove the deflector. A 6. Disengage the two latches (B) on the ...
  • Lexmark T640 | Service Manual - Page 266
    ... deflector."Inner paper deflector assembly removal" on page 4-47. 4. Disconnect the input sensor cable (A) from the input sensor (B). 5. Release the input sensor from its mounting, and remove. 4-48 Service Manual
  • Lexmark T640 | Service Manual - Page 267
    ... 1. 2. 3. 4. 5. Remove the paper tray. Remove the left door. See "Left door removal" on page 4-6. Remove the outer shield. See "Outer shield removal" on page 4-67. Place the printer on its back. Disconnect the autocompensator motor cable (A) from the system board (J24). Repair information 4-49
  • Lexmark T640 | Service Manual - Page 268
    4061-xx0 6. Locate the integrated tray autocompensator assembly (B) on the bottom of the printer, and disconnect the autocompensator arm bias spring (C). Note: When ...right, and push the shaft from the outside of the frame. 11. Remove the integrated tray autocompensator assembly. 4-50 Service Manual
  • Lexmark T640 | Service Manual - Page 269
    4061-xx0 Integrated tray autocompensator pick roll assembly removal 1. Remove the integrated tray, and look underneath the printer for the autocompensator arm. Pull the arm down. 2. Press on the end of the tab (A) and pull the pick roll off the arm. Repeat this step for the pick roll on the other ...
  • Lexmark T640 | Service Manual - Page 270
    ... pick roll onto the arm with the tab aligned. Repeat this step on the other side to install the other pick roll. 4. Gently release the autocompensator arm. Insert, integrated tray. 4-52 Service Manual
  • Lexmark T640 | Service Manual - Page 271
    ... second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more ... remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not be used in another printer. It...
  • Lexmark T640 | Service Manual - Page 272
    4061-xx0 Low voltage power supply removal CAUTION: Unplug the printer before you begin. 1. 2. 3. 4. 5. Remove the redrive assembly. See "Redrive assembly .... The cable is difficult to disconnect. There are catches (B) that firmly hold latches on the LVPS card connector (C). 4-54 Service Manual
  • Lexmark T640 | Service Manual - Page 273
    4061-xx0 6. Pull the LVPS assembly far enough out from the right side of the printer to disconnect the fuser to LVPS AC lamp cable (D). Warning: The LVPS assembly may be difficult to remove from the printer. Do not use excessive force in the removal. 7. Remove the low ...
  • Lexmark T640 | Service Manual - Page 274
    ... not to damage any of the cables. Note the location of the cable tie for later replacement. 6. Disconnect the main fan to the system board (C) at J4. 7. Remove the main fan. 4-56 Service Manual
  • Lexmark T640 | Service Manual - Page 275
    4061-xx0 Installation note: The fan has an orientation marking (D). Be sure to install the fan with the arrow pointing up. Main drive assembly removal 1. Remove the system board and inner shield. See "System board and inner shield removal" on page 4-76. 2. Remove the screw securing the gear ...
  • Lexmark T640 | Service Manual - Page 276
    4061-xx0 5. Lift and remove the cables from the cable hooks (B). 6. Remove the ground cable screw (C). 7. Remove the main drive assembly mounting screws (D). 4-58 Service Manual
  • Lexmark T640 | Service Manual - Page 277
    ... Disconnect the main drive motor cable from the main drive assembly. 10. Remove the main drive assembly. Warning: Whenever the main drive assembly is removed from the printer it must be handled very carefully. Do not allow any of the gears to come in contact with any metal or other hard surface to ...
  • Lexmark T640 | Service Manual - Page 278
    ...47. Remove the MPF solenoid assembly. See "MPF solenoid assembly removal" on page 4-62. Remove the C-clip (A). 8. Remove the washer, and set it aside. 9. Remove the MPF arm assembly. 4-60 Service Manual
  • Lexmark T640 | Service Manual - Page 279
    4061-xx0 Installation note: Note the order of C-clips bushing, and washer when you reinstall. MPF lower paper deflector 1. Remove the MPF lower cover. 2. Remove the four screws securing the MPF lower paper deflector. 3. Remove the defector. Repair information 4-61
  • Lexmark T640 | Service Manual - Page 280
    ...MPF lower paper deflector" on page 4-61. 4. Remove the upper paper deflector. See "Upper paper deflector assembly removal" on page 4-79. 5. Remove the C-clip (A) on the left side. 4-62 Service Manual
  • Lexmark T640 | Service Manual - Page 281
    4061-xx0 6. Press the clips on the end of the shaft to remove the MPF tires (B). 7. Remove the C-clip (C) on the shaft. C B 8. Remove the bushing (D). Note: The bushing fits into a detent (E) in the frame of the MPF arm assembly. Repair information 4-63
  • Lexmark T640 | Service Manual - Page 282
    ...very difficult to locate and remove. 11. Pull the shaft assembly (G) to the right until the left end of the shaft is clear of the frame, and slide the MPF solenoid assembly from the shaft. 4-64 Service Manual
  • Lexmark T640 | Service Manual - Page 283
    4061-xx0 Installation note: Be careful not to lose the washer (H) that is between the MPF solenoid assembly and the C-clip. It belongs to the MPF arm assembly. H Repair information 4-65
  • Lexmark T640 | Service Manual - Page 284
    ... a POR after installing each one or the printer will be rendered inoperable. Warning: Never install... above as a method of troubleshooting components. Once a component has been installed in a printer, it can... of the parts underneath are free to fall away from the upper front cover. 4-66 Service Manual...
  • Lexmark T640 | Service Manual - Page 285
    4061-xx0 Operator panel buttons removal The operator panel and navigation buttons are in a single kit. 1. Remove the operator panel board. See "Operator panel board removal" on page 4-66. 2. Remove the functional rubber sheet (A) and the rubber dome sheet (B). 3. The navigation buttons and the ...
  • Lexmark T640 | Service Manual - Page 286
    ... assembly removal" on page 4-47. 3. Release the input paper sensor from its mounting, and remove. 4. Remove the left door. 5. Remove the paper alignment assembly mounting screws (A). 4-68 Service Manual
  • Lexmark T640 | Service Manual - Page 287
    4061-xx0 6. Locate the paper alignment assembly reference adjustment screw (B) through the left frame, and remove the screw. B 7. Remove the paper alignment assembly. Note: Do the "Paper alignment assembly adjustment" on page 4-3 when you reinstall the assembly. Repair information 4-69
  • Lexmark T640 | Service Manual - Page 288
    ... removal" on page 4-4 Remove the mounting screws (A) from the left side. A 5. Lift the left corner of the laser cover assembly cover to access the flag. 6. Use your thumb to bend the paper full flag assembly slightly to unlatch it from the mounting bracket. 4-70 Service Manual
  • Lexmark T640 | Service Manual - Page 289
    4061-xx0 Paper size sensing board removal 1. Remove the system board and inner shield. See "System board and inner shield removal" on page 4-76. 2. Remove the paper size sensing board mounting screw (A). 3. Disconnect the paper size sensing board cable (B) from the board. 4. Remove the paper size...
  • Lexmark T640 | Service Manual - Page 290
    4061-xx0 Power takeoff shaft and spring removal Remove the power takeoff shaft and spring (A) through the bottom of the printer. 4-72 Service Manual
  • Lexmark T640 | Service Manual - Page 291
    4061-xx0 Printhead removal CAUTION: The laser scanning unit is not a serviceable FRU. Replace the entire unit when service is required. 1. Remove the laser cover. See "Laser cover removal" on page 4-19. 2. Disconnect the printhead cable (A) from the ...
  • Lexmark T640 | Service Manual - Page 292
    4061-xx0 Redrive assembly removal 1. 2. 3. 4. Remove the redrive door assembly. Remove the redrive exit cover. Remove the redrive assembly mounting screws (A). Release the redrive assembly mounting latches (B), and remove the redrive assembly. 4-74 Service Manual
  • Lexmark T640 | Service Manual - Page 293
    4061-xx0 Signature button contact assembly removal 1. 2. 3. 4. 5. 6. Remove the print cartridge. Remove the left side door. See "Left door removal" on page 4-6. Remove the right cover. See "Right cover removal" on page 4-8. Remove outer system board shield. See "Outer shield removal" on page 4-67. ...
  • Lexmark T640 | Service Manual - Page 294
    ...: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can not be used in another ... lower left and top and bottom right). C B A F D E F 6. Remove the system board and inner shield. 4-76 Service Manual
  • Lexmark T640 | Service Manual - Page 295
    .... See "Right cover removal" on page 4-8. 2. Remove the toner sensor mounting screw (A). 3. Disconnect ... front cover, and remove the print cartridge. 2. Unsnap the transfer roll assembly from the left... the transfer roll assembly toward the left, and remove it from the printer. Repair information 4-77...
  • Lexmark T640 | Service Manual - Page 296
    ... cover. See "Upper front cover removal" on page 4-11. 2. Remove the laser cover assembly. See "Laser cover removal" on page 4-19. 3. Remove the C-clips (A) from the upper front cover hinge assembly left... the mounting bracket. 10. Remove the upper front cover hinge assembly. 4-78 Service Manual
  • Lexmark T640 | Service Manual - Page 297
    4061-xx0 Upper paper deflector assembly removal 1. Either lift the ESD cover out of the way or remove it. See "ESD cover removal" on page 4-25. Note: The tabs holding the ESD cover are easily stressed or broken. 2. Lift the left side to release the small tab (A) on the left and the MPF flag (B) ...
  • Lexmark T640 | Service Manual - Page 298
    4061-xx0 USB board assembly removal 1. Remove the upper front cover. 2. Disconnect the USB cable from the USB board assembly. 3. Remove the screw (A) securing the USB board assembly. 4-80 Service Manual
  • Lexmark T640 | Service Manual - Page 299
    4061-xx0 5. Connector locations and connections Connections System board Connector locations and connections 5-1
  • Lexmark T640 | Service Manual - Page 300
    ... page 5-1) Connector J1 Interconnect card J2 Printhead (laser cable) 1 2 3 4 5 6 7 8 J3 Printhead (HSYNC)/mirror motor 1 2 ... 9 10 11 12 J4 Main fan 1 2 3 J5 Cartridge fan 1 2 3 J6 Hopper full (output bin sensor) ...LADJ* LPOW FB LENA* Ground HSYNC CN* HSYNC ID +5 V dc Pin no. Signal 5-2 Service Manual
  • Lexmark T640 | Service Manual - Page 301
    ... 10 11 J13 Operator panel 1 2 3 4 5 6 7 J14 Signature button 1 2 J15 HVPS 1 2 3 4 5 6 7 8 input sensor 9 10 Cartridge toner wheel sensor 11 12 13 Signal Cov... CHARGE Ground DEV Ground INPUTSENSX +5 V dc switched +5 V dc TONER WHEELX Ground Connector locations and connections 5-3
  • Lexmark T640 | Service Manual - Page 302
    ...2 BLDC FG Ground +5 V dc switched BLDC WIND BLDC WIND 1 BLDC WIND 2 Ground +5 V dc fused Ground +24 V dc PTC OPT MPFPick* +24V dc +24 V dc AUTOCOMP* Ground +24VPTCOPT Signal 5-4 Service Manual
  • Lexmark T640 | Service Manual - Page 303
    4061-xx0 System board (see "System board" on page 5-1) Connector J26 Paper size sensor/autocomp motor Pin no. 1 2 3 4 5 6 7 8 9 10 J27 LVPS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J28 MPF paper out 1 2 3 J29 Top options 1 2 3 4 Signal PSIZE2 Ground PSIZE1 PSIZE3 Ground TRAY1 POUT TRAY1 ...
  • Lexmark T640 | Service Manual - Page 304
    ...    Pin no. 1 2 3 4 5 6 Signal (static) +24 V dc 0 V dc +5 V dc 0 V dc 0 V dc 0 V dc    Front autoconnect  1  0 V dc 0 V dc 0 V dc +5 V dc 0 V dc +24 V dc  2 3 4 5 6    5-6 Service Manual
  • Lexmark T640 | Service Manual - Page 305
    4061-xx0 Connector Top autoconnect  Pin no. 1  Signal (static) 0 V dc +5 V dc 0 V dc 0 V dc 0 V dc +5 V dc 0 V dc +24 V dc   2 3 4 5 6 7     8 Fuser Board Fuser Board (not a FRU) Connectors J1-System board J2-Narrow media sensor  J3-N/A J4-Solenoid   J5-Exit sensor ...
  • Lexmark T640 | Service Manual - Page 306
    ... 1 2 3 J6 connector jumper locations High-capacity stacker board Upper unit board Lower unit board Pin 1 X Not used Pin 2 X X Pin 3 Not used X J6 Jumper connector 4 5 1 2 3 5-8 Service Manual
  • Lexmark T640 | Service Manual - Page 307
    4061-xx0 High voltage power supply Connector CN1 System board -& 3&' -& -& 'U HY -& -& 7$5 -& -& &KJ -& CN no. 1 2 3 4 5 6 7 8 Signal Developer PWM +24 V dc Return Charge PWM +24 V dc IN TX PWM TX Enable TX CUR PWM SVRO OUT 7  &1 Interconnect card Connector Connector J1 J2 Pin ...
  • Lexmark T640 | Service Manual - Page 308
    ... 12 13 14 15 16 17 18 +5 V dc +5 V dc Ground Ground Ground Ground +24 V dc +24 V dc Heat on +5 V dc +5 V dc Ground Ground Ground Ground +24 V dc ZC Out* +42 V dc 5-10 Service Manual
  • Lexmark T640 | Service Manual - Page 309
    4061-xx0 Output expander control board Connector J1A Autoconnect Pin no. 1 2 3 1  Signal +24 V dc Ground +5 V dc Prtxdin Ground prtrxd Ground N/C +24 V dc Ground +5 V dc prtxdout Ground prtrxd Ground Ground Paper Present RVsnsr mtrout1 mtrout2 Ground Ground tach + +5 V dc Ground Ground binful ...
  • Lexmark T640 | Service Manual - Page 310
    ... Bottom autoconnect -  1 2 3 4 5  - J2 Feed motor 1 2 3 4 5 6 J3 Stepper motor 1 2 3 4 5 6  7 8 9 10 J4 Accessory connector 1 2 3 4 5 6 J5 Solenoid 1 2 J6 Stapler 1 2 3 5-12 Service Manual
  • Lexmark T640 | Service Manual - Page 311
    4061-xx0 Connector Staple card assembly (continued) -  Pin no. 1 2 3 4 Signal Ground Bottom Top Ground Sol2+24 V dc Ground bnempty5Vsnsr2 Ground full+ NRFull+ Ground Ground psthruint 5Vptt +5V dc Ground cvropin+24V dc Ground 5V in prtxdout Ground prtrxd Ground Ground DooropinGround 5Vswitch ...
  • Lexmark T640 | Service Manual - Page 312
    4061-xx0 5-14 Service Manual
  • Lexmark T640 | Service Manual - Page 313
    4061-xx0 6. Preventive maintenance This chapter describes procedures for printer preventive maintenance. Following these recommendations can help ... safety exposure from any non-Lexmark attachments. Lubrication specifications No requirements for this printer. Scheduled maintenance Maintenance kit ...
  • Lexmark T640 | Service Manual - Page 314
    4061-xx0 6-2 Service Manual
  • Lexmark T640 | Service Manual - Page 315
    ... indicates the part is contained in a parts packet. Model information used in the parts catalog. Model name Lexmark T640 Lexmark T640n Lexmark T642 Lexmark T642n Lexmark T644 Lexmark T644n Configuration Non-network Network Non-network Network Non-network Network Machine type 4061-000 4061-...
  • Lexmark T640 | Service Manual - Page 316
    4061-xx0 Assembly 1: Covers                      7-2 Service Manual
  • Lexmark T640 | Service Manual - Page 317
    ...Fuser wiper cover assembly Redrive cap cover assembly Laser cover assembly-250-sheet output, 000/010 Laser cover assembly-500-sheet output, 200/210/400/410 ... 40X0234 40X0013 40X0235 1 1 1 1 1 1 1 1 1 1 Operator panel outer bezel with Lexmark logo, T640 Operator panel outer bezel with ...
  • Lexmark T640 | Service Manual - Page 318
    4061-xx0 Assembly 2: Frame 1             7-4 Service Manual
  • Lexmark T640 | Service Manual - Page 319
    4061-xx0 Assembly 2: Frame 1 AsmIndex 1 2 3 4 5 6 7 8 9 40X0024 40X0026 40X0025 40X0060 40X0331 40X0285 Part number 40X0065 40X0225 Units/ mach 4 1 4 1 1 1 1 1 1 Units/ kit or pkg 1 1 4 1 1 1 1 1 1 Description Frame extension, nut plate, 200/210/400/410 Right side hand holder Parts packet (PP ...
  • Lexmark T640 | Service Manual - Page 320
    4061-xx0 Assembly 3: Frame 2               7-6 Service Manual
  • Lexmark T640 | Service Manual - Page 321
    ... bin level sensor bracket Standard bin level sensor Standard bin level sensor cable Output paper level flag, 000/010 Output paper level flag, 200/210/400/410 Main fan cap Redrive door assembly 250 sheet 000/010 Redrive door assembly 500 sheet 200/210/400/410 Extension guide Parts catalog 7-7
  • Lexmark T640 | Service Manual - Page 322
    4061-xx0 Assembly 4: Frame 3                          7-8 Service Manual
  • Lexmark T640 | Service Manual - Page 323
    ...000/010 Machine mounting pad HVPS/input sensor/toner sensor cable assembly Toner sensor assembly High voltage contact kit, including 10 11 12 ... (5) Screw block (4) Tray bias assembly Cartridge holddown assembly Upper paper feed..., 200/210/400/410 Developer support roller Input sensor Gear #60...
  • Lexmark T640 | Service Manual - Page 324
    4061-xx0 Assembly 5: Printhead     7-10 Service Manual
  • Lexmark T640 | Service Manual - Page 325
    ...40X0062 1 1 Part number 40X0061 Units/ mach 1 Units/ kit or pkg 1 Description Laser cable assembly Parts packet (printhead mounting screw) (PP 40X0165) Printhead assembly (includes all cables) CAUTION:The printhead is not a serviceable FRU. Do not disassemble the printhead. Parts catalog 7-11
  • Lexmark T640 | Service Manual - Page 326
    4061-xx0 Assembly 6: Paper feed-autocompensator          7-12 Service Manual
  • Lexmark T640 | Service Manual - Page 327
    4061-xx0 Assembly 6: Paper feed-autocompensator AsmIndex 6-1 1 2 Part number 40X0066 40X0067 40X0068 Units/ mach 1 1 1 Units/ kit or pkg 1 1 1 Description Pick arm assembly-500-sheet, 200/210/400/410 Pick arm assembly-250-sheet, 000/010 Parts packet, bellcrank assembly-250-sheet tray, 000/010 • ...
  • Lexmark T640 | Service Manual - Page 328
    4061-xx0 Assembly 7: Paper feed-multipurpose feeder        7-14 Service Manual
  • Lexmark T640 | Service Manual - Page 329
    4061-xx0 Assembly 7: Paper feed-multipurpose feeder AsmIndex 7-1 2 3 4 5 5 5 NS 1 Part number 40X0079 40X0310 40X0076 40X0077 Units/ mach 1 1 1 1 Units/ kit or pkg 1 1 1 1 Description Multipurpose feeder lower deflector assembly Multipurpose feeder pick arm assembly with solenoid Pick roll ...
  • Lexmark T640 | Service Manual - Page 330
    4061-xx0 Assembly 8: Paper feed-alignment     7-16 Service Manual
  • Lexmark T640 | Service Manual - Page 331
    4061-xx0 Assembly 8: Paper feed-alignment AsmIndex 8-1 2 3 4 40X0085 40X0086 1 1 Part number 40X0084 Units/ mach 1 Units/ kit or pkg 1 Description Paper feed alignment assembly paper feed Parts packet (clip ref ground mounting screw) (PP 40X0165) Reference ground clip Parts packet (reference ...
  • Lexmark T640 | Service Manual - Page 332
    4061-xx0 Assembly 9: Integrated 250-sheet paper tray        7-18 Service Manual
  • Lexmark T640 | Service Manual - Page 333
    4061-xx0 Assembly 9: Integrated 250-sheet paper tray AsmIndex 9-1 2 3 4 5 6 7 Part number 40X0087 40X0092 40X0093 40X0263 40X0094 40X0105 40X0090 Units/ mach 1 1 4 1 1 2 1 Units/ kit or pkg 1 1 1 1 1 1 1 Description Integrated 250-sheet tray Side restraint-250-sheet tray Wear strips Pass thru ...
  • Lexmark T640 | Service Manual - Page 334
    4061-xx0 Assembly 10: Integrated 500-sheet paper tray        7-20 Service Manual
  • Lexmark T640 | Service Manual - Page 335
    4061-xx0 Assembly 10: Integrated 500-sheet paper tray AsmIndex 10-1 2 3 4 5 6 7 Part number 40X0098 40X0099 40X0182 40X0103 40X0183 40X0105 40X0106 Units/ mach 1 1 4 1 1 2 1 Units/ kit or pkg 1 1 1 1 1 1 1 Description Tray assembly-500-sheet tray Side restraint Wear strip Pass thru plate-500-sheet...
  • Lexmark T640 | Service Manual - Page 336
    4061-xx0 Assembly 11: Drives-Main drive and developer drive        7-22 Service Manual
  • Lexmark T640 | Service Manual - Page 337
    ...Power takeoff shaft-500-sheet, 200/210/400/410 Power takeoff shaft spring Bevel gear with grease packet and washer • Bevel gear (1) • Instruction sheet (1) • Grease packet (1) 5 6 40X0114 40X0115 1 1 Developer drive assembly Parts packet, developer drive • Developer drive shaft (1) • shaft...
  • Lexmark T640 | Service Manual - Page 338
    4061-xx0 Assembly 12: Hot roll fuser           2EA R
  • Lexmark T640 | Service Manual - Page 339
    4061-xx0 Assembly 12: Hot roll fuser AsmIndex 12-1 1 1 2 3 3 4 Part number 40X2592 40X2591 40X2590 40X0120 40X0122 40X0123 40X0121 Units/ mach 1 1 1 1 1 1 1 Units/ kit or pkg 1 1 1 1 1 1 Description Fuser assembly w/115 V lamp Fuser assembly w/100 V lamp Fuser assembly w/220 V lamp Fuser wiper ...
  • Lexmark T640 | Service Manual - Page 340
    4061-xx0 Assembly 13: Transfer/charging          7-26 Service Manual
  • Lexmark T640 | Service Manual - Page 341
    4061-xx0 Assembly 13: Transfer/charging AsmIndex 13-1 2 3 4 5 6 7 8 9 NS NS Part number 40X0126 40X0127 40X0129 40X0130 40X0131 40X0132 40X0133 40X0134 40X0135 1 1 1 1 1 1 1 Units/ mach Units/ kit or pkg 1 2 1 1 1 1 1 1 1 1 1 Description Parts kit, charge roll link asm, left side Charge roll ...
  • Lexmark T640 | Service Manual - Page 342
    4061-xx0 Assembly 14: Electronics-power supplies      7-28 Service Manual
  • Lexmark T640 | Service Manual - Page 343
    .../400/410 Power cord set (8 ft right angle, 13 amp)-United States, Canada, Caribbean countries, Colombia, Costa Rica, Dominican Republic, El Salvador, Equator, ... Parts packet (PP 40X0165) 1 Front cable harness (HVPS/input sensor/toner sensor) 2 2 2 2 40X0256 40X0255 40X0257 40X0258 1 1 1 1 1 1 1 1...
  • Lexmark T640 | Service Manual - Page 344
    4061-xx0 Assembly 15: Electronics-card assemblies       Note: 7-30 Service Manual
  • Lexmark T640 | Service Manual - Page 345
    .../010 System board assembly (non-network), 000 (Board ID Q0016034) System... Q0016035) System board assembly (non-network), 400 (Board ID Q0016036) System... ID Q0016031) System board assembly (network), 210 (Board ID Q0016032) System board assembly (network), 410 (Board ID Q0016033) Bar code card assembly...
  • Lexmark T640 | Service Manual - Page 346
    4061-xx0 Assembly 16: Electronics-shields              7-32 Service Manual
  • Lexmark T640 | Service Manual - Page 347
    4061-xx0 Assembly 16: Electronics-shields AsmIndex 16-1 2 2 2 3 4 5 6 7 40X0149 40X0153 40X0152 40X0154 40X0222 1 1 1 1 1 1 1 1 1 1 Part number 40X0150 Units/ mach 1 Units/ kit or pkg 1 Description Outer shield-2 slot, 200/210/400/410 Parts packet (INA cover mounting screw) (PP 40X0165) Parts ...
  • Lexmark T640 | Service Manual - Page 348
    4061-xx0 Assembly 17: Cabling diagrams 1    AsmIndex 17-1 2 3 Part number 40X0223 40X0160 40X0264 Units/ mach 1 1 1 Units/ kit or pkg 1 1 1 Description HVPS/input sensor/toner sensor cable assembly MPF sensor cable Output bin sensor cable 7-34 Service Manual
  • Lexmark T640 | Service Manual - Page 349
    ... 18: Cabling diagrams 2    AsmIndex 18-1 2 3 Part number 40X0061 40X0074 40X0046 Units/ mach 1 1 1 Units/ kit or pkg 1 1 1 Description Laser printhead cable assembly Autocompensator motor cable Paper size sensing board/Tray 1 autocompensator paper out/low cable Parts catalog 7-35
  • Lexmark T640 | Service Manual - Page 350
    4061-xx0 Assembly 19: Cabling diagrams 3      7-36 Service Manual
  • Lexmark T640 | Service Manual - Page 351
    ... 40X0157 40X0224 Units/ mach 1 1 1 1 1 Units/ kit or pkg 1 1 1 1 1 Description Signature button contact assembly with cable Bottom/front autoconnect cable assembly HVPS/input sensor/toner sensor cable assembly Top autoconnect cable assembly LVPS to system board cable assembly Parts catalog 7-37
  • Lexmark T640 | Service Manual - Page 352
    4061-xx0 Assembly 20: Cabling diagrams 4     7-38 Service Manual
  • Lexmark T640 | Service Manual - Page 353
    4061-xx0 Assembly 20: Cabling diagrams 4 AsmIndex 20-1 Part number 40X0006 Units/ mach 1 Units/ kit or pkg 1 Description Upper front cover hinge assembly, includes: • USB cable (A) (1) • Operator panel cable (B) (1) • Cover open switch/cable (C) (1) 2 3 4 40X0162 40X0163 40X0226 1 1 1 1 1 1 ...
  • Lexmark T640 | Service Manual - Page 354
    4061-xx0 Assembly 21: Cabling diagrams 5       7-40 Service Manual
  • Lexmark T640 | Service Manual - Page 355
    4061-xx0 Assembly 21: Cabling diagrams 5 AsmIndex 21-1 2 3 3 4 4 Part number 40X0083 40X0159 40X0035 40X0249 40X0053 40X0054 Units/ mach 1 1 1 1 1 1 Units/ kit or pkg 1 1 1 1 1 1 Description Frame assembly with solenoid and cable Main drive motor cable assembly EP fan with cable-250 sheet, 000/010...
  • Lexmark T640 | Service Manual - Page 356
    ... with cable Option pass thru sensor Drive shaft-250-sheet Power takeoff spring Stud assembly 56P4126 56P1228 99A1929 99A0070 56P4128 56P4127 99A0272 99A0275 56P4133 1 1 2 2 1 1 1 1 1 7-42 Service Manual
  • Lexmark T640 | Service Manual - Page 357
    4061-xx0 Assembly 23: Optional 250-sheet paper tray        AsmIndex 23-1 2 3 4 5 6 7 Part number 56P4122 56P4130 56P1279 56P4230 99A0121 99A0120 56P4131 Units/ option 1 1 1 1 1 1 1 Units/ kit or pkg 1 1 4 1 1 2 1 Description Tray assembly, option-250-sheet Side restraint-250-...
  • Lexmark T640 | Service Manual - Page 358
    ...takeoff spring Drive shaft-500-sheet Bin low sensor with cable Base assembly, 500-sheet Paper out arm-500-sheet drawer Switch activate spring Parts packet (screw) (PP 99A0263) 7-44 Service Manual
  • Lexmark T640 | Service Manual - Page 359
    4061-xx0 Assembly 25: Optional 500-sheet paper tray        AsmIndex 25-1 2 3 4 5 6 7 Part number 56P4150 56P4137 99A0292 56P4196 99A0120 56P4195 56P4147 Units/ option 1 1 1 1 1 1 1 Units/ kit or pkg 1 1 4 1 2 1 1 Description Complete tray assembly-500-sheet Side restraint-500-sheet...
  • Lexmark T640 | Service Manual - Page 360
    4061-xx0 Assembly 26: Duplex option  AsmIndex 26-1 1 Part number 56P4100 56P4102 Units/ option 1 1 Units/ kit or pkg 1 1 Description Duplex assembly.-250-sheet Duplex assembly-500-sheet 7-46 Service Manual
  • Lexmark T640 | Service Manual - Page 361
    4061-xx0 Assembly 27: Envelope feeder   AsmIndex 27-1 2 Part number 56P4107 56P4229 Units/ option 1 1 Units/ kit or pkg 1 1 Description Complete envelope option Slide out support Parts catalog 7-47
  • Lexmark T640 | Service Manual - Page 362
    ...Description Complete output expander assembly Upper diverter spring Parts packet (PP 99A0263) Output expander tray Left side cover Bin full dual sensor upper stacker assembly 7-48 Service Manual
  • Lexmark T640 | Service Manual - Page 363
    4061-xx0 Assembly 29: Output expander 2      AsmIndex 29-1 2 3 4 Part number 56P4206 56P4235 56P4194 Units/ option 1 1 1 Units/ kit or pkg 1 1 1 Description Rear access door assembly Right side cover Parts packet, screw (PP 99A0263) Output expander pass thru sensor Parts catalog 7-...
  • Lexmark T640 | Service Manual - Page 364
    ... Complete high-capacity output expander Rear access door assembly Rear door latch Right cover Front cover Output tray assembly Left cover Tray sensing switch assembly 7-50 Service Manual
  • Lexmark T640 | Service Manual - Page 365
    4061-xx0 Assembly 31: High-capacity output expander 2       AsmIndex 31-1 2 3 4 5 NS Part number 99A0104 99A0415 56P4212 56P4197 56P4210 Units/ option 2 1 1 1 2 Units/ kit or pkg 1 1 31 1 1 1 Description Upper diverter spring Swing arm spring Parts packet (PP 99A0263) Bin full dual ...
  • Lexmark T640 | Service Manual - Page 366
    4061-xx0 Assembly 32: High-capacity output expander 3  7-52 Service Manual
  • Lexmark T640 | Service Manual - Page 367
    4061-xx0 Assembly 32: High-capacity output expander 3 AsmIndex 32-1 Part number 56P4194 Units/ option 2 Units/ kit or pkg 1 Description Stacker pass thru sensor Parts catalog 7-53
  • Lexmark T640 | Service Manual - Page 368
    4061-xx0 Assembly 33: 5-bin mailbox 1                  7-54 Service Manual
  • Lexmark T640 | Service Manual - Page 369
    4061-xx0 Assembly 33: 5-bin mailbox 1 AsmIndex 33-1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 56P4179 1 1 56P4186 56P4188 Part number 56P4110 56P4176 56P4180 56P4181 99A1785 99A0104 56P4183 56P4178 56P4190 56P4182 56P4191 Units/ option 1 1 1 1 2 1 1 1 2 5 1 1 5 5 1 1 1 2 1 1 1 1 1 1 1 1 1 Units/ kit or...
  • Lexmark T640 | Service Manual - Page 370
    4061-xx0 Assembly 34: 5-bin mailbox 2   7-56 Service Manual
  • Lexmark T640 | Service Manual - Page 371
    4061-xx0 Assembly 34 (cont.): 5-bin mailbox 2 AsmIndex 34-1 2 56P4185 4 Part number Units/ option Units/ kit or pkg 12 1 Description Parts packet (board mounting screw) (PP 99A0263) Diverter solenoid Parts catalog 7-57
  • Lexmark T640 | Service Manual - Page 372
    4061-xx0 Assembly 35: High-capacity feeder 1            7-58 Service Manual
  • Lexmark T640 | Service Manual - Page 373
    4061-xx0 Assembly 35: High capacity feeder 1 AsmIndex 35-1 1 2 3 4 5 6 7 8 9 10 11 11 99A0658 56P4142 Part number 56P4105 56P4106 99A1818 99A0681 56P4155 56P4157 Units/ option 1 1 1 4 1 1 4 4 4 1 4 4 2 Units/ kit or pkg 1 1 1 1 1 2 1 1 1 1 4 4 2 Description Complete option assembly (letter) ...
  • Lexmark T640 | Service Manual - Page 374
    4061-xx0 Assembly 36: High-capacity feeder 2     7-60 Service Manual
  • Lexmark T640 | Service Manual - Page 375
    4061-xx0 Assembly 36: High-capacity feeder 2 AsmIndex 36-1 2 3 4 99A1808 99A0667 1 1 1 1 Part number 99A0654 Units/ option 1 Units/ kit or pkg 1 Description Paper low switch Parts packet (nuts) (PP 99A0676) AC external jumper cord Power supply board Parts catalog 7-61
  • Lexmark T640 | Service Manual - Page 376
    4061-xx0 Assembly 37: High-capacity feeder 4   AsmIndex 37-1 2 Part number 99A0275 99A0272 Units/ option 1 1 Units/ kit or pkg 1 1 Description Power takeoff spring Drive shaft-250-sheet 7-62 Service Manual
  • Lexmark T640 | Service Manual - Page 377
    4061-xx0 Assembly 38: High-capacity feeder 5     AsmIndex 38-1 2 3 4 Part number 56P4162 99A0070 56P4127 Units/ option 3 1 2 1 Units/ kit or pkg 1 2 1 Description Parts packet (auto comp assembly mounting screw) (PP 99A0263) Pick arm assembly-2000-sheet Pick roll assembly Option pass ...
  • Lexmark T640 | Service Manual - Page 378
    4061-xx0 Assembly 39: Kiosk-vertical and horizontal paper adapters   AsmIndex 39-1 2 Part number 56P4108 56P4109 Units/ option Units/ kit or pkg 1 1 Description Complete vertical kiosk option Complete horizontal kiosk option 7-64 Service Manual
  • Lexmark T640 | Service Manual - Page 379
    4061-xx0 Assembly 40: StapleSmart finisher I              AsmIndex 40-1 2 3 4 5 6 7 7 8 9 10 11 12 Part number 56P4117 56P4221 99A1785 56P2114 56P2116 56P2115 56P4222 99A2542 56P4223 56P4224 56P4219 56P4213 56P4218 Units/ option 1 2 1 1 1 1 1 1 1 1 1 1 Units/ kit or ...
  • Lexmark T640 | Service Manual - Page 380
    4061-xx0 Assembly 41: StapleSmart finisher 2  AsmIndex 41-1 Part number 56P4225 Units/ option 1 Units/ kit or pkg 1 Description Stapler assembly 7-66 Service Manual
  • Lexmark T640 | Service Manual - Page 381
    4061-xx0 Assembly 42: StapleSmart finisher 3   AsmIndex 42-1 2 Part number 56P4226 99A0104 Units/ option 1 1 Units/ kit or pkg 1 1 Description Switch assembly, top cover open Spring, upper diverter Parts catalog 7-67
  • Lexmark T640 | Service Manual - Page 382
    4061-xx0 Assembly 43: StapleSmart finisher 4  AsmIndex 43-1 Part number 56P4228 Units/ option 1 Units/ kit or pkg 1 Description StapleSmart wheels maintenance kit 7-68 Service Manual
  • Lexmark T640 | Service Manual - Page 383
    ...pin to Twinax cable 9-pin to Coax (BNC) cable PRESCRIBE card assembly Cartridge shipping package, empty MarkNet 8000 Fast Ethernet MarkNet 8020 Gigabit Ethernet ... Japanese font card Nyogel 744 grease packet Relocation kit-250/250-sheet printer Relocation kit-500/500-sheet printer Parts catalog 7-69
  • Lexmark T640 | Service Manual - Page 384
    4061-xx0 7-70 Service Manual
  • Lexmark T640 | Service Manual - Page 385
    ... base if you are using a 2000-sheet drawer, a duplex unit and an input option, or more than one... our Lexmark Web site at www.lexmark.com/multifunction printers. Install the printer and any options you have ...250-sheet or 500-sheet drawer Duplex unit Printer CAUTION: The printer requires two people to ...
  • Lexmark T640 | Service Manual - Page 386
    ...on top of any drawer help you position the support unit so the edges are aligned properly. Make sure the support unit is securely in place. A B C 3. Attach another optional drawer, a duplex unit, or the printer. You can attach a label to the trays to indicate the tray number. A-2 Service Manual
  • Lexmark T640 | Service Manual - Page 387
    ... appropriate duplex unit for the tray size installed in the printer. 1. Place the duplex unit on top of any installed drawers or the table or printer cabinet where you plan to use the printer.... on top of any drawer help you position the duplex unit so the edges are aligned properly. Make ...
  • Lexmark T640 | Service Manual - Page 388
    ... can customize the printer memory capacity and connectivity by adding optional cards. The instructions in this section ... options: • Memory cards - Printer memory - Flash memory • Firmware cards - Bar Code ... internal print servers (also called internal network adapters or INAs) A-4 Service Manual
  • Lexmark T640 | Service Manual - Page 389
    4061-xx0 Accessing the printer system board You must access the printer system board to install printer memory, flash memory, a firmware card, or an option card. Note: Use a Phillips screwdriver to remove the system board access cover. 1. Push ...
  • Lexmark T640 | Service Manual - Page 390
    4061-xx0 5. Slide the shield to the right, and then remove it. 6. Set the shield aside. Use the illustration to locate the connector for the card you want to install. Option card connectors Firmware card connector Memory card connector A-6 Service Manual
  • Lexmark T640 | Service Manual - Page 391
    ... Remove the system board access cover. (See "Accessing the printer system board" on page A-5.) Warning: ... static electricity. Touch something metal such as the printer frame before you touch a memory card... card in paper, and store it in a box. 5. Close both latches. Appendix A-Options and features ...
  • Lexmark T640 | Service Manual - Page 392
    ... or firmware card Removal 1. Remove the system board access cover. (See "Accessing the printer ...pins on the bottom of the card. 4. Place the flash memory or firmware card in its original packaging. If you..., reinstall the option card. (See "Installing an option card" on page A-10.) A-8 Service Manual...
  • Lexmark T640 | Service Manual - Page 393
    ... Installation Note: Flash memory or firmware cards designed for other printers may not work ... holes on the system board. 4. Push the flash memory or firmware card firmly into place, and ... clips. The entire length of the connector (B) on the flash memory or firmware card must touch the system board ...
  • Lexmark T640 | Service Manual - Page 394
    ... Installing an option card The printer has two connectors that support the following option cards:... electricity. Touch something metal such as the printer frame before you touch an option ... (or the extra screw shipped with the card). 6. Tighten the screw to secure the card. A B A-10 Service Manual...
  • Lexmark T640 | Service Manual - Page 395
    ... shield After you have installed options on the printer system board, follow these steps ... Close the multipurpose feeder. Printing and using features Canceling a print job There are several methods for canceling a print job. • Canceling a job from the printer operator panel. See "Canceling a job ...
  • Lexmark T640 | Service Manual - Page 396
    ...a job from the taskbar When you send a job to print, a small printer icon appears in the right corner of the taskbar. 1. Double-... icon on your desktop. A list of print jobs appears in the printer window. 2. Select the print job you want to cancel. 3. Click the trash can button. A-12 Service Manual
  • Lexmark T640 | Service Manual - Page 397
    ...You can print a menu settings page to review the default printer settings and to verify ...printer options are installed correctly. 1. Make sure the printer is on. 2. Press 3. Press 4. Press on the operator panel... support person for a solution, and print another network setup page to verify the printer...
  • Lexmark T640 | Service Manual - Page 398
    ... type of print job that can be initiated by the user at the printer. This includes a confidential job, a verify print job... printer, you can specify in the driver that you want the printer to hold the job in memory. Once ... Print or Print and Hold, and then follow the driver instructions. A-14 Service ...
  • Lexmark T640 | Service Manual - Page 399
    ... print job, and follow the At the printer steps. Macintosh 1. From a word processor, spreadsheet,... PIN. 5. Send your job to the printer. Go to the printer when you are ready to retrieve your ...: After your job prints, it is deleted from printer memory. Entering a personal identification number...
  • Lexmark T640 | Service Manual - Page 400
    ... Jobs or Print and Hold, then follow the driver instructions. 4. Select the type of held job ...confidential print job, and follow the At the printer steps. Macintosh 1. From a word processor, spreadsheet,... confidential print job, and follow the At the printer steps. A-16 Service Manual
  • Lexmark T640 | Service Manual - Page 401
    ... trays Tray linking enables the automatic linking feature for trays when you load the same size and type of print media in multiple sources. The printer automatically links the trays; when one tray is ... print media loaded in tray 2 and tray 4, the printer selects print media from tray 2 until it...
  • Lexmark T640 | Service Manual - Page 402
    ... single output source. Linking output bins lets the printer automatically switch output to the next available bin....and connectivity. Note: Not all output bins support every paper and envelope size. ...will vary, depending on the media weight.) T640 T642 T644 1 1 output expander * A-18 Service Manual
  • Lexmark T640 | Service Manual - Page 403
    ... paper • 50 envelopes (75 g/m2) Printer Models T640 T642 T644 How many can be installed on the printer 3 Bin is allowed to connect with 1 5-bin mailbox, 1 high-capacity output... 2 1 output expander or 1 finisher * * See the Setup Guide for information on how to install options in relation to each...
  • Lexmark T640 | Service Manual - Page 404
    ... you create a single output source so the printer can automatically switch output to the next available... output bins, refer to the Menus and Messages Guide. Note: The bin sequence for linking always starts...Setup. appears next to Paper Menu. The printer returns to the Ready state. A-20 Service Manual
  • Lexmark T640 | Service Manual - Page 405
    ...job 8-11 Card Stock & Label Guide 1-8 card stock, guidelines 1-18 cartridge duct, removal 4-23 ...3-25 Demo Mode 3-27 Disk Encryption 3-28 Download Emuls 3-27 Energy Conserve 3-28 Env Prompts...14 blower duct 7-9 Button Test 3-7 buttons accessing service menus 3-1 Button Test 3-7 description function 2-2 ...
  • Lexmark T640 | Service Manual - Page 406
    ...TESTS input source 3-6 Prt Quality Pgs 3-6 PRINTER SETUP Configuration ID 3-21 Defaults ...Test 3-16 DRAM Test 3-7 duplex option parts catalog 7-46 service check 2-82 duplex tests Duplex Feed 1 3-12 Duplex Feed 2 3-12 Motor ...12 parts catalog 7-65, 7-66, 7-67, 7-68 service check 2-123 I-2 Service Manual
  • Lexmark T640 | Service Manual - Page 407
    ...27 parts catalog 7-24 removals 4-26 service check 2-87 fuser board 5-7 fuser ...30 parts catalog 7-25 removal 4-28 service check 2-92 fuser lamp parts ... removal 4-36 parts catalog 7-25 service check 2-93 fuser solenoid adjustment 4-2 service check 2-94 fuser to LVPS AC cable removal 4-38 fuser transfer ...
  • Lexmark T640 | Service Manual - Page 408
    ... catalog 7-58, 7-60, 7-62, 7-63 service check 2-95 high-capacity output ... narrow media sensor navigation buttons 2-2 network setup page 8-13 number pad ..., guidelines 1-17 lamp, fuser 4-32 laser cover removal 4-19 left cover ... upper front cover 4-11 , 7-3 upper front cover bezel 4-14 I-4 Service Manual...
  • Lexmark T640 | Service Manual - Page 409
    ... drives-main drive and developer drive 7-22 duplex option 7-46 electronics card assemblies 7-30 ... roll 4-51 MPF 4-62 PIN entering at the printer 8-15 entering from the driver 8-14 for confidential jobs 8-14 ... 1-15 weight 1-11 print quality service check 2-116 troubleshooting 3-33 print quality pages ...
  • Lexmark T640 | Service Manual - Page 410
    ... gear 4-21 cartridge duct 4-23 covers 4-4 fuser wiper cover assembly 4-4 laser cover ... assembly 4-75 system board 4-76 toner sensor 4-77 transfer roll assembly .../cable 2-80 dead machine 2-80 duplex option 2-82 envelope feeder 2-84 ... assembly 4-57 main fan 4-56 MPF arm assembly 4-60 I-6 Service Manual
  • Lexmark T640 | Service Manual - Page 411
    ... system board 2-126 toner sensor 2-127 transfer roll 2-128 service error codes 2-8... assembly removal 4-75 specifications acoustics 1-7 dimensions 1-5 electrical 1-6 environment 1-7 media 1-8 memory configuration ..., cover closed 2-80 symptoms base printer 2-5 duplex option 2-6 envelope feeder 2-6 high-...
  • Lexmark T640 | Service Manual - Page 412
    4061-xx0 I-8 Service Manual
  • Lexmark T640 | Service Manual - Page 413
    ...Fuser wiper cover assembly 7-3 Redrive cap cover assembly 7-3 Laser cover assembly, 250-sheet output, 000/010 7-3 Laser cover assembly, 500-sheet output, 200/210/400/410 7-3... number label-blank 7-3 Upper front cover assembly with Lexmark logo 7-3 Upper cover latch/spring 7-3 Clear...
  • Lexmark T640 | Service Manual - Page 414
    ... paper level flag, 200/210/400/410 7-7 Extension guide 7-7 External ground clip 7-5 Laser cable assembly 7-11 Laser printhead cable assembly 7-35 Printhead assembly (... 7-27 Transfer roll assembly right arm 7-27 Transfer roll right spring 7-27 I-10 Service Manual
  • Lexmark T640 | Service Manual - Page 415
    ... clip 7-15 Parts packet (printhead mounting screw 7-11 Cartridge shipping package, empty 7-69 Parts packet (cable ties...-1 slot, 000/010 7-33 HPVS/input sensor/toner sensor cable assembly 7-9, 7-29, 7-34 HVPS/input sensor/toner sensor cable assembly 7-37 LVPS to system board cable assembly 7-37...
  • Lexmark T640 | Service Manual - Page 416
    ... 200/210/400/410 7-7 Operator panel outer bezel with Lexmark logo T642 7-3 Operator panel outer bezel with Lexmark logo T644 7-3 Kit, upper front panel button 7-3 Exit/narrow media sensor ... 7-69 Korean font card 7-69 MarkNet 8050 wireless, non-US 7-69 I-12 Service Manual
  • Lexmark T640 | Service Manual - Page 417
    ... Stapler access door switch assembly Stapler access cover Bellcrank spring-500-sheet option tray Duplex assembly.-250-sheet Duplex assembly-500-sheet 250-sheet paper drawer, complete assembly Drawer assembly, complete-500-sheet Complete option ...
  • Lexmark T640 | Service Manual - Page 418
    ...wheels maintenance kit 7-68 Slide out support 7-47 Plate-250 sheet pass ...Maintenance kit 6-1 System board assembly (non-network), 000 (Board ID Q0016034 7-31 ... Relocation kit-250/250-sheet printer 7-69 Relocation kit-500/500... 7-44 Parts packet, screw (auto comp mounting 7-42 I-14 Service Manual...
  • Lexmark T640 | Service Manual - Page 419
    4061-xx0 99A0263 99A0263 99A0272 99A0275 99A0292 99A0415 99A0447 99A0654 99A0658 99A0667 99A0675 99A0675 99A0676 99A0676 99A0677 99A0677 99A0681 99A1785 99A1808 99A1818 99A1929 99A2542 Parts packet, screw (switch spring Screw Drive shaft-250-sheet 7-42, Power takeoff spring 7-42, 7-44, Wear ...
  • Lexmark T640 | Service Manual - Page 420
    4061-xx0 I-16 Service Manual
  • Lexmark T640 | Service Manual - Page 421
    ...defects guide Page 1 of 1 Print defects guide Match a set of repeating defects on a print job to the marks on ... side of a single-sided print job, replace the toner cartridge before replacing the fuser. Replace the... mm (3.46 in.) 95.2 mm (3.75 in.) Replace the toner cartridge 47.8 mm (1.88 in.) 96.8 ...
  • Lexmark T640 | Service Manual - Page 422
    Lexmark T64x (4061) Wiring diagram 5 4 3 2 1 Printhead 7 5 6 3 4 1 2 13 12 11 10 9 8 7 6 5 4 3 2 1 Main Fan Toroid Toroid Cartridge Fan Cover Closed Switch 1 2 3 3 2 1 Autoconnect Top 1 ... TXD1BR GND RXDIR 13 12 11 10 9 8 7 6 5 4 3 2 1 Cartridge Sensor Input Sensor 10 9 T102 JC1 JC2...



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