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
    ... any country where such provisions are inconsistent with local law : LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ... other countries. ImageQuick, PrintCryption, and StapleSmart are trademarks of Lexmark International, Inc. Other trademarks are the property of their...
  • Lexmark T640 | Service Manual - Page 3
    ... Media specifications ...1-8 Paper and specialty media guidelines ...1-8 Supported print media ...1-8 Selecting print media ...1-15 ...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 ...
  • Lexmark T640 | Service Manual - Page 4
    ... Self Test (POST) sequence ...2-4 Symptom tables ...2-5 Base printer symptoms ...2-5 High-capacity feeder (2000-sheet) ... service check ...2-76 Main fan...2-76 Cartridge fan service check...2-76 950.00 through ...Parallel port service check ...2-116 Print quality service check ...2-116 iv Service Manual
  • Lexmark T640 | Service Manual - Page 5
    ...check ...Signature button assembly service check ...StapleSmart finisher service check ...System board ...126 2-127 2-128 Diagnostic aids ...3-1 Accessing service menus ...3-1 Diagnostics mode ...3-2 Entering Diagnostics ...Test/Clean ...3-19 Flash Test ...3-19 PRINTER SETUP ...3-20 Defaults ...3-20 Page...
  • Lexmark T640 | Service Manual - Page 6
    ... ...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 ...assembly removal...4-4 Redrive cap cover removal ...4-5 Paper support removal...4-5 Left door removal ...4-6 Redrive door...4-7... removal...4-19 Bevel gear removal ...4-21 Cartridge duct removal ...4-23 Developer drive assembly ...
  • Lexmark T640 | Service Manual - Page 8
    ... 11: Drives-Main drive and developer drive ...7-22 Assembly 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
    ... ...A-1 Installing a 250-sheet 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-5 Removing or installing a memory card ...A-7 Removal ...A-7 Installation ...A-8 Removing or installing a flash memory or ...
  • 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
    4061-xx0 Laser notices Laser notice The printer is certified in the U.S. to conform to the requirements of DHHS 21 ... I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b)...-795 nanometers. The laser system and printer are designed so there is never any ...
  • Lexmark T640 | Service Manual - Page 12
    ...de acesso humano a radiação laser superior a um nível de Classe I durante a operação normal, a manutenção feita pelo utilizador ou condições de assistência prescritas. xii Service Manual
  • Lexmark T640 | Service Manual - Page 13
    4061-xx0 Laserinformatie De printer voldoet aan de eisen die gesteld worden aan een laserprodukt... van klasse I worden niet als ongevaarlijk aangemerkt. De printer is voorzien van een laser van klasse ...golflengte van 770-795 nanometer. Het lasergedeelte en de printer zijn zo ontworpen dat bij normaal ...
  • Lexmark T640 | Service Manual - Page 14
    4061-xx0 Laser-notis Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21 CFR, underparagraf J för laserprodukter av Klass I (1). I andra länder uppfyller skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 60825-1. Laserprodukter i Klass I anses ej hälsovådliga. ...
  • 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
    ... failing field replaceable units (FRUs). Diagnostic aids contains tests and checks used to locate or repeat symptoms of printer problems. Repair information provides instructions for making printer adjustments and removing and installing FRUs. Connector locations uses ...
  • Lexmark T640 | Service Manual - Page 21
    ...computers and to most computer networks. The Lexmark T64x laser printers are available in the following models:...user error messages, service checks, and diagnostic aids to determine the printer problem and ... interface card - MarkNet™ Print Servers - Lexmark PrintCryption™ card - Forms card (single...
  • Lexmark T640 | Service Manual - Page 22
    ... input option. If you purchased a multifunction printer (MFP) that scans, copies, and faxes, you may need additional furniture. Refer to www.lexmark.com/multifunctionprinters for more information. 1-2 Service Manual
  • Lexmark T640 | Service Manual - Page 23
    ...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 T640n 1200 dpi 600 dpi ... T642n 1200 dpi 600 dpi Lexmark T644, Lexmark T644n 1200 600 dpi Simplex ...
  • Lexmark T640 | Service Manual - Page 24
    4061-xx0 Memory configuration Models Lexmark T640n Lexmark T642n Lexmark T644n 128 640 Lexmark T640 Lexmark T642 Lexmark T644 128 640 Memory type Standard DRAM (MB) ... 128MB, 256MB, and 512MB SDRAM DIMMs are available from Lexmark. The memory options are 168-pin synchronous DRAM DIMMs. ...
  • 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 (closed position) Envelope option (support fully extended) Printer cabinet Printer cabinet stand 2.13 in. (54...
  • Lexmark T640 | Service Manual - Page 26
    ...Power levels are shown in watts (W). Maximum current is given in Amperes (A). Lexmark T640 Lexmark T640n .05 W... Lexmark T642n .05 W Lexmark T644 Lexmark T644n .05 W Printing states Off (all models... 220 to 110 power converter with the 110 volt printer is not recommended. • All models are ENERGY STAR...
  • Lexmark T640 | Service Manual - Page 27
    ...ISO 7779 and conform with ISO 9296. Model Lexmark T640(n) Status Idle (standby mode) Simplex... 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 Duplex printing ...
  • Lexmark T640 | Service Manual - Page 28
    ... Avoiding jams For more details about the types of paper and specialty media your printer supports, refer to the Card Stock & Label Guide available on our Lexmark Web site at www.lexmark.com. We recommend that you try a limited ...
  • Lexmark T640 | Service Manual - Page 29
    ....9 x 355.6 mm (3 x 7 in. to 8.5 x 14 in.) 400 UAT (option) 250-sheet tray 500-sheet tray Print media size (✓- indicates support) Dimensions (UAT - universally adjustable tray) ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓...
  • Lexmark T640 | Service Manual - Page 30
    ... tray Print media size (✓- indicates support) Dimensions (UAT - universally adjustable tray)... integrated label1 1 Printing 2 label applications on the printer requires a special label fuser cleaner ... fuser cleaner is included with a special label cartridge for label applications. Vinyl labels may...
  • Lexmark T640 | Service Manual - Page 31
    ... Integrated forms Pressuresensitive area (must enter the printer first) Paper base (grain long) ... 135 g/m2. Printing label applications on your printer requires a special label fuser cleaner ... label converter has passed the Lexmark's criteria is available at www.lexmark.com. General information 1-11
  • Lexmark T640 | Service Manual - Page 32
    ... is preferred for papers over 135 g/m2. Printing label applications on your printer requires a special label fuser cleaner which prevents duplexing. 28 lb ... only. Information on whether your 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 210 x 297 mm (8.27 x 11.7 in.) 148 x 210 mm (5.83 x 8.27 in.) 182 x ...
  • 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 ...Not recommended Stapled 60 to 90 g/m2 (16 to 24 lb bond) Not recommended 1-14 Service Manual
  • Lexmark T640 | Service Manual - Page 35
    ... appropriate print media for your printer helps you avoid printing problems. The following sections contain... stock. For detailed information, refer to the Card Stock & Label Guide located on the Lexmark Web site at www.lexmark.com. The laser printing process heats paper to high temperatures of 225°C...
  • Lexmark T640 | Service Manual - Page 36
    ... to set the Paper Type to Transparency from the printer driver or the Local Printer Setup Utility to avoid ... envelope size from the operator panel, the printer driver, in the Local Printer Setup Utility, or from MarkVisionମ. 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,...adhesive, and could void your printer and cartridge warranties. Use labels that can ...
  • Lexmark T640 | Service Manual - Page 38
    ... stock (or each time you replace the print cartridge), complete the following steps to maintain printer feeding reliability: 1. Print five sheets ... 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
    ... and card stock) to help ensure trouble-free printing. See "Supported print media" on page 1-8 ...of any print media you are considering using with the printer before purchasing large quantities. By selecting the ...(5.5 mm) open-end wrench 7.0 mm nut driver Needlenose pliers Diagonal side cutters Spring ...
  • Lexmark T640 | Service Manual - Page 40
    ... Memory Single Inline Memory 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
    ... when you lift or set the printer down. Use the service error code, user status... necessary to repair a malfunctioning printer. They will lead you to solutions or service checks, including... Test (POST) sequence" on page 2-4 "Understanding the printer operator panel" on page 2-2 "Understanding the menus...
  • Lexmark T640 | Service Manual - Page 42
    ...printer operator panel The operator panel on your printer is a 4-line back-lit gray scale ... indicating the menus are unavailable will appear if the printer is not ready. Press Stop to stop ... pressing Stop, the message Stopping is displayed. When the printer has stopped, the status line in the operator...
  • Lexmark T640 | Service Manual - Page 43
    ... panel shows messages and graphics describing the current state of the printer and indicating possible printer problems you must resolve. The top line of the display is ... lines of the display are the body of the screen. This is where you view printer status, supplies messages, show-me screens...
  • 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 the base ... 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
    ... all diamonds and does not complete POST. Paper feed problems-base printer or integrated 500-sheet paper tray Paper jams at exit...page 2-122. High-capacity feeder (2000-sheet) symptoms Symptom The printer does not recognize the highcapacity feeder installed. Paper feed problem with the high-capacity ...
  • Lexmark T640 | Service Manual - Page 46
    ...the envelope feeder. Envelopes do not feed properly into base printer. Action Go to "Envelope feeder service check" on page 2-84. Go to "Envelope feeder service check" on page 2-84. Output expander Symptom Printer does not display Output Bin Full. Paper does not feed all ...
  • 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
    ... non-recoverable except in an intermittent condition when you can POR the printer to temporarily recover from the error condition. Service error codes (9xx.xx...xx Engine software error 903 .xx Paperport link driver error Interface violation by RIP Interface violation by ...
  • 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 Fuser... roll. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .21 ...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 Fuser... roll. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .41 ...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 Fuser... roll. Go to "920.xx-Cold fuser service check" on page 2-87. 920 .91 ...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
    ... 925.01. Go to "925.xx-Hot fuser service check" on page 2-91. 925 .11 • 115 V lamp in 220 V printer. • ....xx-Hot fuser service check" on page 2-91. 925 .21 • 115 V lamp in 220 V printer. • ....xx-Hot fuser service check" on page 2-91. 925 .31 • 115 V lamp in 220 V printer. • ...
  • Lexmark T640 | Service Manual - Page 63
    ... fuser service check" on page 2-91. 925 .41 • 115 V lamp in 220 V printer.... fuser service check" on page 2-91. 925 .51 • 115 V lamp in 220 V printer... fuser service check" on page 2-91. 925 .91 • 115 V lamp in 220 V printer.... Go to "925.xx-Hot fuser service check" on page 2-91. 927 .00...
  • Lexmark T640 | Service Manual - Page 64
    ...non-existent feedback signal. Action Go to "Cartridge fan service check" on page 2-76. 927 .03... board • Check toner cartridge. • Check toner sensor Go to "Toner sensor service check" ....67 • Check toner sensor • Check toner cartridge Check the printhead • Check printhead • Check cables ...
  • 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
    ... 0. Loss of lock detected by higher level code. Motor is type 1. Driver over temperature detection. Motor is type 0. RIP-engine communications lost...page 2-105. 937 .80 Go to"Main drive service check" on page 2-105. POR the printer several times, if the error code continues to be displayed, replace...
  • Lexmark T640 | Service Manual - Page 67
    ... 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 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
    ...listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two ...listed above as a method of troubleshooting components. Once a component has been installed in a printer, it can... indicates a system board processor failure. Printer has performed more than 100...
  • Lexmark T640 | Service Manual - Page 70
    ... device has detected an equipment check in its system card. Service errors 980 thru 984 can be... duplex, tray x (1, 2, 3, 4, or 5), envelope feeder or output bin. Action Service errors 980 thru 984 can ....00 991 .00 Device system card failed basic assurance test 2-30 Service Manual
  • Lexmark T640 | Service Manual - Page 71
    ...data is processed from the host computer. Press to return the printer to the Ready state. User status displays ... Low Description/action If the toner cartridge is low, then Toner Low displays.... the appropriate status, if any, displays. The printer cannot detect when the envelope feeder or multipurpose...
  • Lexmark T640 | Service Manual - Page 72
    .... • Press and hold and press to display debug data for the engine and cartridge code. Note: This message may help diagnose a potential printer problem. Change This message displays when the user should change...
  • Lexmark T640 | Service Manual - Page 73
    ... diagnostics. • If the device is experiencing a hardware problem, turn the printer off and on. If the message continues to be displayed, go to "Duplex option service check... diagnostics. • If the device is experiencing a hardware problem, turn the printer off and on. If the message continues...
  • Lexmark T640 | Service Manual - Page 74
    ...finisher service check" on page 2-123. Insert Cartridge or Close Door This message displays when the printer... be taken: • Install the stapler cartridge. • Press to clear the message. The printer handles stapled jobs... and the Load Staples may display. Insert Staple Cartridge 2-34 Service Manual...
  • Lexmark T640 | Service Manual - Page 75
    ...following selections are available: - Cancel Job - Reset Printer - Reset Active Bin If the message... option has been hot unplugged. The printer requires the reinstallation of the option to print a page... option has been hot unplugged. The printer requires the reinstallation of the option to print a page...
  • Lexmark T640 | Service Manual - Page 76
    ... feeder has been hot unplugged. The printer requires the reinstallation of the feeder to print a page... the engine has reported that the staple cartridge is low. • The printer does not detect the staple... Staples message for this print job by pressing . The printer starts or resumes printing, but does...
  • Lexmark T640 | Service Manual - Page 77
    .... • If the device is experiencing a hardware problem, turn the printer off and on. If the message .... • If the device is experiencing a hardware problem, turn the printer off and on. If the message .... • If the device is experiencing a hardware problem, turn the printer off and on. If the message ...
  • Lexmark T640 | Service Manual - Page 78
    ... good print cartridge is inserted. Note: This error indicates the printer was able to read the cartridge ID, but the ID did not pass.... 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 may be allowed to...
  • Lexmark T640 | Service Manual - Page 79
    ...Insufficient 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 .... Note: This error may only occur when the printer is formatting PPDS print data. The following...
  • Lexmark T640 | Service Manual - Page 80
    ... that have been requested to be written to flash. This message displays when the printer detects an unformatted flash at power on. Press to clear the ... formatted. This error displays when a network port is detected, but the printer cannot establish communications with it. This error displays when a ...
  • 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
    ... when the disk is full. This error code displays when the printer detects an unformatted disk at power on. Press to ... to maintain the print quality and reliability of the printer. The parts are available as a maintenance kit. For more ... Low 1565 .xx Emul Error Load Emul Option 2-42 Service Manual
  • Lexmark T640 | Service Manual - Page 83
    ..., the device can still be attached to the printer, but is experiencing a communications problem, not fully connected, or having a... is recognized, the printer automatically clears the error and continues. If the option is experiencing a hardware problem, turn the printer off and back on. If the error ...
  • Lexmark T640 | Service Manual - Page 84
    ... jams and paper handling errors (2xx.xx) When the printer jams, the appropriate jam message will be displayed on the printer operator panel. If you select Show Areas on the operator panel, you can ... paper jam does not fix the problem, go to "Input sensor service check" on page 2-102. •...
  • Lexmark T640 | Service Manual - Page 85
    ... cable connections. If no problem is found with motor connections, go to "Main drive service check" on ... Check fuser entry guide for toner build up. • Check fuser for wear or contamination. If problem is found... and system board. If no problem is found, go to "Main drive service check" on page 2-105....
  • 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
    ...Check fuser entry guide for toner build up. • Check fuser for wear or contamination. if a problem is ... (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
    ... the fuser entry guide for toner build up. • Check the fuser for wear or contamination. If a problem is ... (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
    ...the fuser entry guide for toner build up. • Check the fuser for wear or contamination. If a problem is ... (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
    ...fuser entry guide for toner build up. • Check the fuser for wear or contamination. If a problem ...engine 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
    ... unit for correct installation and alignment to the printer. • If available, try another duplex ... unit for correct installation and alignment to the printer. • If available, try another duplex ..." 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
    .... If the tests pass, retry to feed from the printer through the duplex option. If the problem is still present, replace .... 237 .00 Paper did not reach the printer input sensor from the duplex unit. • Duplex jam access tray is not fully latched. • Printer PTO not driving the duplex feed folls....
  • Lexmark T640 | Service Manual - Page 109
    ... the duplex and Continue selected. • Sensor is having mechanical or electrical problems. Action • Remove any sheets from the duplex option. • Try ... the duplex and Continue selected. • Sensor is having mechanical or electrical problems. 238 .04 Duplex doublefeed sensor covered. • Media ...
  • Lexmark T640 | Service Manual - Page 110
    ... left in the duplex and Continue selected. • Sensor is having mechanical or electrical problems. Action • Remove any sheets from the duplex option. • Try the ... duplex sensor cables for correct installation. 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
    ... log for indications of repetitive entries that help to isolate a problem to a particular area of the printer or option. Paper feed problems with error ... then the base printer autoconnect system is operating correctly and the problem is in the unrecognized option. Continue with this service check or ...
  • 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
    ...and 927.03 through 927.07. • Cartridge fan-927.02 Main fan Service tip: The main fan runs at full speed at the end of POR or when the printer ... fan service check Error code 927.02 indicates a problem with the cartridge fan.... is found, remove and retry the printer. If no problem is found, go to step ...
  • Lexmark T640 | Service Manual - Page 117
    ... 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 118
    ... 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. Note: Before proceeding with this service check, make sure you ...
  • Lexmark T640 | Service Manual - Page 119
    ...interconnect card assembly. If the problem remains, contact the next level of support. Replace the original ...installed system board. If the problem remains, contact the next level of support. 4 System board... roll bearing and remove the roll from the printer. Leave the paper wrapped around the charge...
  • Lexmark T640 | Service Manual - Page 120
    ... check the base printer for correct operation. If the base printer operates correctly, go to "High-capacity feeder input tray service check" on page 2-95. If the base printer continues to not operate correctly, remove any other attached paper handling options. ...
  • Lexmark T640 | Service Manual - Page 121
    ...: Observe all the ESD precautions and turn the printer off before any feature or option cards .... Unplug the AC line cord, remove the LVPS from the printer, and check the continuity of fuse F1. ... voltage is incorrect, replace the LVPS assembly. Turn the printer off and disconnect each cable connected ...
  • Lexmark T640 | Service Manual - Page 122
    ... been accumulated to be stapled or offset when the jam is detected, the printer alternately flashes the primary and secondary ... sheets are removed during jam clearance, the printer does not reprint the removed sheets..... A duplexed sheet did not reach the printer input sensor. A piece of media is over ...
  • Lexmark T640 | Service Manual - Page 123
    ... correctly, check for correct operation of the sensor. If a problem is found and cannot be corrected, replace the duplex option assembly. If no problem is found, check for a piece of paper or other ... might cause the paper to jam. If no problem is found, replace the duplex option assembly. ...
  • Lexmark T640 | Service Manual - Page 124
    ... feeder is correctly installed and mated to the autoconnect at the front of the printer. Check the connector for signs of damage to the connector or contacts. If ... the envelope feeder and check the voltages at the autoconnect on the front of the printer. If incorrect, check the interconnect card. If ...
  • Lexmark T640 | Service Manual - Page 125
    ...Load Envelopes after envelopes are placed in the hopper Service tip: The kick rolls rotate during ...replace the envelope feeder option. 990.xx Service Error, envelopes fail to feed from the hopper ...Check the deflector gap adjustment before continuing this service check. FRU 1 Deflector gap adjustment ...
  • Lexmark T640 | Service Manual - Page 126
    ...envelope stopped in the paper path of the feeder and an envelope also stopped in the base printer paper path FRU 1 Latch lever Action Make sure the tip of the latch ...not be detented on the latch. If no problem is found and the problem persists, replace the envelope feeder option. 2-86 Service Manual
  • Lexmark T640 | Service Manual - Page 127
    ....xx error codes may be cleared by turning the printer on and off and allowing it to complete POR... use caution if the printer must receive power in order to perform the task. Service tip: ... Observe the lamp through the left near side of the printer. It may be necessary to remove the redrive assembly to...
  • Lexmark T640 | Service Manual - Page 128
    ... the LVPS board. Plug in the power cord, turn the printer on and check the voltage. If correct, replace...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
    ....xx error codes may be cleared by turning the printer on and off and allowing it to complete POR...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 ...
  • Lexmark T640 | Service Manual - Page 130
    ...caution before removing or servicing. CAUTION: There is a danger from hazardous voltage in the area of the printer where you ...use caution if the printer must receive power in order to perform the task. Service tip:...replace the thermistor. If no problem is found, go to step 2. Turn the printer off and ...
  • Lexmark T640 | Service Manual - Page 131
    ... before removing or servicing. CAUTION: There is a danger from hazardous voltage in the area of the printer where you ... 4-76. 2 3 925.xx-Hot fuser service check Error Code 923.xx, ... before removing or servicing. CAUTION: There is a danger from hazardous voltage in the area of the printer where you ...
  • Lexmark T640 | Service Manual - Page 132
    .... After the fuser assembly cools down, turn the printer on. If you receive the same error code,...Exit sensor closed Narrow media sensor closed Printer printing-narrow media fed through the... removal" on page 4-76. With the redrive assembly removed from the printer, enter the Diagnostics mode and run the...
  • Lexmark T640 | Service Manual - Page 133
    ...Exit sensor open Narrow media sensor open Printer printing-media over sensor(s), non-narrow ...Exit sensor closed Narrow media sensor closed Printer printing-narrow media fed through the ...shield removal" on page 4-76. With the redrive assembly removed from the printer, enter Diagnostics mode and run the...
  • Lexmark T640 | Service Manual - Page 134
    4061-xx0 Fuser solenoid service check 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. Service tip: Try changing the ...
  • Lexmark T640 | Service Manual - Page 135
    ... feeder input tray service checks must be made with the highcapacity feeder attached to the base printer to obtain accurate results. Service tip: Be sure the paper size ... option board assembly. Check the option or base printer autoconnect for signs of damage. Repair the high-capacity ...
  • Lexmark T640 | Service Manual - Page 136
    ...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 ...displays, paper jammed over the pass thru sensor Where x=the printer displays the value of x for the paper tray where the error occurs. ...
  • Lexmark T640 | Service Manual - Page 137
    ...elevator tray down button does not operate. The tray moves to the upper position Service tip: Open the high-capacity feeder front door and check the ...-capacity feeder input tray does not reach the pass thru sensor Service tip: Be sure the paper in tray is within specifications. FRU 1 Autocompensator ...
  • 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
    ... of the output options, the base printer autoconnect system is operating correctly. The problem is in the unrecognized option. Continue with this service check or go to ... exits half way out of the redrive assembly Service tip: For this type of problem check the "Base printer sub error codes" on page ...
  • Lexmark T640 | Service Manual - Page 142
    ...not fix the problem, replace the highcapacity output stacker option. Input sensor service check ... 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 ... out sensor (on option system board) 2 Printer does not recognize Tray x is installed ... x system board Action Check the autoconnect from the printer or option above tray x. Check for cuts...
  • Lexmark T640 | Service Manual - Page 144
    ... x does not reach the pass thru sensor Service tip: Check the media in tray x to make sure ... 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. 2-104 Service Manual
  • Lexmark T640 | Service Manual - Page 145
    .... Determine if the noise is in the main drive, toner cartridge, fuser, or main drive gearbox. Look for any..., main drive gearbox, or fuser. Repair as necessary. A service error code 936 - Transport Motor may be...the system board. If this does not fix the problem, replace the main drive motor. Check the ...
  • Lexmark T640 | Service Manual - Page 146
    ... above as a method of troubleshooting components. Once a component has been installed in a printer, it can ... be used in another printer. It must be returned to the manufacturer. Before continuing with this service check perform ....00 through 950.29 EPROM mismatch failure" on page 2-77. 2-106 Service ...
  • Lexmark T640 | Service Manual - Page 147
    4061-xx0 Operator panel display Service tip: The printer has detected a problem with the system board, the operator panel cable (part of the upper ... sure a card is not plugged in backward. This condition causes the printer to fail POST, displaying all diamonds on the operator ...
  • Lexmark T640 | Service Manual - Page 148
    .... If the problem continues, replace the controller board. Hard Disk Option Service tip: These printers support one hard disk option. Make sure only one hard disk ... is properly grounded. If you find no problem, contact your next level of support before replacing the network card....
  • 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
    ... make sure the ESD brush is not loose. Printer does not recognize one or more ... then the base printer autoconnect system is operating correctly and the problem is in the unrecognized expander ... rear of the printer. Go to "Autoconnect" on page 5-6. If the voltages are correct and the problem persists,...
  • 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
    ..., contaminated rollers, or binds. Replace the alignment assembly if any problem is found. Check the inner paper deflector for correct installation. If the ... top of the autocompensator arm assembly. 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
    4061-xx0 The printer does not recognize the paper size selected FRU 1 Back restraint ...paper size that is not recognized and install the tray in the printer. Select the paper size and corresponding paper ... go to step 4. If the voltage changes, recheck the printer. If Tray 1Missing is still displayed, ...
  • Lexmark T640 | Service Manual - Page 156
    ... Service tip: Before troubleshooting any print quality problems do the following: Install another print cartridge if available before .... Test the printer using plain paper (20 lb). An incorrect printer driver for the installed software can cause problems. Incorrect characters could print, and ...
  • Lexmark T640 | Service Manual - Page 157
    ... cable harness. Generally a 93x service error is posted if the printhead assembly fails and the printer does not give a blank copy symptom. The ...random marks is due to loose material moving around inside the printer and attaching to the photoconductor, charge roll, or transfer ...
  • Lexmark T640 | Service Manual - Page 158
    ..., or damaged. Replace as necessary. Print quality-background Service tip: Some background problems can be caused by rough papers, non-Lexmark toner cartridges or if the media texture is set to the rough setting. Some slick or coated ...
  • Lexmark T640 | Service Manual - Page 159
    ...J15 Printer idle J15-1 J15-2 J15-4 J15-1 J15-2 J15-4 0 V dc +4 V dc 0 V dc ... (approximate) 4 System board HVPS connector Printer printing If J15-1 voltage is incorrect,...due to a variation in the speed of the paper as it feeds through the printer, especially in the development and transfer process....
  • Lexmark T640 | Service Manual - Page 160
    ... necessary. Check the following voltages at J15-8 on the system board: • Printer Idle J15-8 measures 0 V dc ...If this does not correct the problem, replace the system board. Turn the printer off, and check the resistance between J15-7 and printer ground. The resistance measures approximately 0 ohms....
  • Lexmark T640 | Service Manual - Page 161
    ...caused by loose toner in the machine in the paper path being carried through the printer on the backside of the paper. FRU 1 Hot roll fuser assembly Action Toner is being carried out on the backside of the media. This problem is generally caused by a toner buildup on the fuser hot roll or...
  • Lexmark T640 | Service Manual - Page 162
    ... event log and see if 201 or 931 errors are logged. Service error code 1 Error code 931.xx No first HYSNC ...-Unsupported Cartridge User Error message, be sure a Lexmark T64x print cartridge is correctly installed in the printer. The cartridge is easily identified by the contact board on the right side...
  • Lexmark T640 | Service Manual - Page 163
    ... clips are installed, and the brush is grounded. Printer does not recognize StapleSmart finisher ... is the only option that is not recognized by the base printer. If the finisher is the only option not... they are attached securely. Check the voltages at the printer top autoconnect. If incorrect, remove...
  • 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
    ...to cycle or fire. • 990.xx Service - Check Bin 1 displayed. FRU 1 Stapler cartridge holder Stapler assembly Action Before ... remove the stapler cartridge holder from the stapler assembly. If the holder is jammed in the stapler assembly: 1. Turn the printer off, and remove the right side cover. Use ...
  • 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
    ... menu setting before checking the toner sensor. This service check is intended to be used when a 929.xx ... of the developer drive assembly can cause the printer to display a 929.xx error code ... approximately +5 V dc with the system board removed from the printer. If incorrect, replace the system board....
  • Lexmark T640 | Service Manual - Page 168
    ...transfer roll recently. CAUTION: Make sure the printer is unplugged before making any checks ...parts for personal safety and to prevent damage to the printer. FRU 1 Transfer roll assembly Action...-3. The voltage changes from +24 V dc with the printer idle to 0 V dc when the printer runs the print test...
  • Lexmark T640 | Service Manual - Page 169
    ...explains the tests and procedures to identify printer failures and verify repairs have corrected the problem. Accessing service menus There are different test menus that can be accessed during POR to identify problems with the printer. Diagnostics Mode 1. Turn off the printer. ...
  • 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
    ... Test BASE SENSOR TEST Toner Input Output DEVICE TESTS Quick Disk Test (if installed) Disk Test/Clean (if installed) Flash Test (if installed) PRINTER SETUP Defaults Page Count Perm Page Count Serial Number Envelope Enhance Engine Setting 1 through 4 Model Name Configuration ID Edge to Edge Par S ...
  • 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 ... of the EVENT LOG from DIAGNOSTICS. • Configuration information, including printer serial number, controller code level, engine code ...
  • 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: 1.... increases by one. The test continues until all of the printer processor's cache has been tested. ... display. To stop this test before completion, turn the printer off. Parallel Wrap tests This test is...
  • Lexmark T640 | Service Manual - Page 177
    ... Serial Wrap x Test Canceled displays, and the printer returns to the HARDWARE TESTS menu. DUPLEX TESTS... single Duplex Quick test cannot be canceled. • The printer attempts to print the Quick Test Page ...source. If the default paper source only supports envelopes, then the page is printed from Tray ...
  • Lexmark T640 | Service Manual - Page 178
    ... Select Sensor Test from DUPLEX TESTS. The message Sensor Test Testing displays. 2. Manually actuate each of the duplex sensors. When the sensor/switch is closed, CL (...open) displays. • Duplex input sensor • Duplex exit sensor 3. Press Back ( ) or Stop ( ) to exit the test. 3-10 Service Manual
  • Lexmark T640 | Service Manual - Page 179
    4061-xx0 Motor Test (duplex) This test lets you test the duplex option paper feed drive system, and verify that the power and velocity values are acceptable. The duplex runs the DC motor at high speed and low speed, taking an average of the power (PWM) required for each speed and calculating the ...
  • Lexmark T640 | Service Manual - Page 180
    ... position 1. This test can be run using any of the supported paper sizes. To run the Duplex Feed 1... position 2. This test can be run using any of the supported paper sizes. To run the Duplex Feed 2...unit, and clear the message on the operator panel by pressing Back ( ) or Stop ( ). 3-12 Service Manual
  • Lexmark T640 | Service Manual - Page 181
    ... TESTS Feed Tests (input tray) This test lets 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 only way to observe the paper path is to open the ...
  • Lexmark T640 | Service Manual - Page 182
    ... can use any media size or envelope supported by the printer. Note: If the Configure Bins ... well as any output option bin installed on the printer is shown on the menu. (The output bins are displayed ... Feed To All Bins from OUTPUT BIN TESTS. The printer feeds a separate piece of media to the standard ...
  • 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
    ... test verifies the staple mechanism by sending eight sheets of media from the printers default paper source and stapling the sheets. To...: This test can be run using any of the paper sizes supported by the printer. To run the Feed Test, select Feed Tests from FINISHER TESTS. While the feed test runs, ...
  • Lexmark T640 | Service Manual - Page 186
    ... This test is used to determine if the sensors located inside the printer are working correctly. To run the Base Sensor Test: 1. Select ...-Output (exit) sensor Toner Level-Toner level sensor (remove the cartridge and replace to actuate the sensor) 2. Manually actuate the sensors to verify that each ...
  • 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
    ... of measure. Warning: Changing this setting resets the printer to factory defaults, and data may ... Envelop Enhance: 1. Select Envelope Enhance from PRINTER SETUP. 2. Select Low, Medium, or High. The default is Medium. 3. Press Back ( ) to return to PRINTER SETUP. Engine Setting 1 through 4 Warning:...
  • 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
    ... EP Defaults This setting is used to restore each printer setting listed in EP SETUP to its factory default... Time You can change the amount of time the printer warms up before allowing pages ...helps reduce curl in some environments. ) to return to PRINTER SETUP. Transfer The transfer can be adjusted ...
  • Lexmark T640 | Service Manual - Page 191
    .... The Event Log printed from DIAGNOSTICS includes: Detailed printer information, including code versions Time and date ... Additional debug information in some cases The printed event log can be faxed to Lexmark or your next level of support for verification or diagnosis. Diagnostic aids 3-23
  • 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
    ... 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 maintenance kit is ...
  • Lexmark T640 | Service Manual - Page 194
    ...=Reset displays momentarily. When the reset operation is complete, the menu returns to the Printer Setup Reset Maintenance Count screen. Print quality... roll settings. • Contents of the EVENT LOG from DIAGNOSTICS. • Printer configuration information: Printer serial number, controller code level,...
  • Lexmark T640 | Service Manual - Page 195
    ...-xx0 SIZE SENSING This setting controls whether the printer automatically registers the size of paper installed ... settings for each port are turned off. • The printer language is changed to PPDS Emulation. Users ... to turn it on. While Demo Mode is set, the printer will start in Demo Mode until you ...
  • Lexmark T640 | Service Manual - Page 196
    ... Defaults This setting enables a user to restore all the printer settings to the original factory settings. Selections ... not appear unless you have a network printer. The following settings are not changed: • Display ... LOG The event log provides a history of printer errors. The event log can only ...
  • 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
    ...message Printing Menus Settings appears on the display. The printer returns to the Ready state after the menu ... contains the following information: • A list of all the printer settings contained in the operator panel menus ... 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
    ... the printer. The ground connection is automatically made when the option is installed below the printer. The paper input sensor is located in the rear of the duplex option under ... information such as paper path status, sensor status, motor status, and so on to the base printer. 3-32 Service Manual
  • Lexmark T640 | Service Manual - Page 201
    ...appear, and the printer returns to Ready. If another type of print quality problem exists,...media is being used. Verify you are using the correct printer drivers. Toner smears or print comes ... 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 Toner Darkness ... faded replace the print cartridge. • If you are using preprinted forms, make sure the ink can withstand ...
  • Lexmark T640 | Service Manual - Page 203
    ...Verify the print media type and print tray type settings match. • Verify you are using the correct printer drivers. Part or all of the page is printed in black. Check the print cartridge to see if it is installed correctly. The job prints, but ...
  • Lexmark T640 | Service Manual - Page 204
    ...can be enabled to improve 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 Gray Correction options Driver option...
  • Lexmark T640 | Service Manual - Page 205
    ... of the printer occur in the input options or the duplex tray. Jams inside the printer occur in two locations and require the removal of the print cartridge. Jams can also occur at the rear of the printer or in one of the output options. Note: The following clearing ...
  • Lexmark T640 | Service Manual - Page 206
    ... 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
    ... all envelopes. If the jammed envelope has entered the printer and cannot be pulled out, remove the ... feeder. a. Lift the envelope feeder up out of the printer, and then set it aside. b. Remove the envelope from the printer. c. If you cannot remove the envelope, the print cartridge will have to be ...
  • Lexmark T640 | Service Manual - Page 208
    ... the incline surface of a tray or across more than 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.... Pull the print media 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
    ... 5. Press . 200 and 201 Paper Jam Remove Cartridge 1. Push the release latch, and lower the multipurpose feeder.... latch, and open the top front cover. CAUTION: The inside of the printer is hot. 3. Lift and pull the print cartridge out of the printer. Warning: Do not touch the photoconductor drum ...
  • Lexmark T640 | Service Manual - Page 210
    ...4. Place the print cartridge aside. Note: Do not leave the cartridge exposed to light for extended periods. Note: The print media may ... when you pull, stop pulling. 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...
  • 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
    ...A 28x Stapler Jam 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 locks into position. 2. Remove the print ...
  • 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
    ... the fuser solenoid. Adjust the fuser solenoid while installed in the printer. Adjust the screw on the eccentric mounted on the solenoid housing to provide ... three printhead mounting screws. To perform the registration adjustment: 1. 2. 3. 4. 5. Turn the printer off. Press and hold and . Turn the ...
  • 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 ...board or assembly for personal safety and to prevent damage to the printer. CAUTION: Use the handholds on the side ... fingers are not under the printer when you lift or set the printer down. Note: Some...
  • 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
    ... cover. See "Right cover removal" on page 4-8. Remove the paper support. See "Paper support removal" on page 4-5. Remove the redrive cap. See ... wiper cover latch, and remove the cover. Remove the screw (A) at the rear of the printer and the larger screw (B) at the front on the right side. 7. Remove ...
  • 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. Remove the three screws securing the cartridge duct (A). Note: It may be necessary to pull the main fan cable (B) up and out of ...
  • 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
    ... 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 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
    ...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
    ... 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 295
    ... to prevent contamination or damage. 1. Open the upper front cover, and remove the print cartridge. 2. Unsnap the transfer roll assembly from the left pivot arm. 3. Lift the transfer roll assembly toward the left, and remove it from the printer. Repair information 4-77
  • Lexmark T640 | Service Manual - Page 296
    ..., and move the upper cover hinge assembly toward the left to clear the right upper cover pivot arm from 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
    ... (HSYNC)/mirror motor 1 2 3 4 5 6 7 8 9 10 11 12 J4 Main fan 1 2 3 J5 Cartridge fan 1 2 3 J6 Hopper full (output bin sensor) 1 2 3 J7 USB port 1 2 3 4 5 ...Ground HOP LED Video Level 2+ Video3* Ground +5PHead LPOW 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
    ...3 J10 Fuser DC 1 2 3 4 5 6 7 8 9 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 Closed Ground +5V dc NARMEDIA* Ground THERM Ground THUMP +5V dc THUMPRET EXIT SNS* +3.3 V dc I2C CLK L5 I2C DAT...
  • 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
    ...of the top cover and the power supply cover. • Possible safety exposure from any non-Lexmark attachments. Lubrication specifications No requirements for this printer. Scheduled maintenance Maintenance kit The operator panel displays the message...
  • Lexmark T640 | Service Manual - Page 314
    4061-xx0 6-2 Service Manual
  • Lexmark T640 | Service Manual - Page 315
    ...description column 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-...
  • Lexmark T640 | Service Manual - Page 316
    4061-xx0 Assembly 1: Covers                      7-2 Service Manual
  • Lexmark T640 | Service Manual - Page 317
    ...USB board assembly Upper front cover assembly with Lexmark logo, including Operator panel board (1) ... 40X0013 40X0235 1 1 1 1 1 1 1 1 1 1 Operator panel outer bezel with Lexmark logo, T640 Operator panel outer bezel ... logo T642 Operator panel outer bezel with Lexmark logo T644 Clear LCD bezel Kit,...
  • 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
    ... contact (3) PC drum contact (1) Screw (5) Screw block (4) Tray bias assembly Cartridge holddown assembly Upper paper feed deflector Inner paper feed deflector, 000/010 Inner paper feed deflector, 200/210/400/410 Developer support roller Input sensor Gear #60 MPF shield ESD shield with label EP ...
  • Lexmark T640 | Service Manual - Page 324
    4061-xx0 Assembly 5: Printhead     7-10 Service Manual
  • Lexmark T640 | Service Manual - Page 325
    ... 2 3 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
    4061-xx0 Assembly 14: Electronics-power supplies AsmIndex 14-1 1 1 1 2 Part number 56P4232 56P4233 56P4234 56P4238 40X0260 Units/ mach 1 1 1 1 1 Units/ kit or pkg 1 1 1 1 1 Description LVPS-115 V ac, 000/010 LVPS-115 V ac, 200/210/400/410 LVPS-220 V ac, 000/010 LVPS-220 V ac, 200/210/400/410 Power...
  • Lexmark T640 | Service Manual - Page 344
    4061-xx0 Assembly 15: Electronics-card assemblies       Note: 7-30 Service Manual
  • Lexmark T640 | Service Manual - Page 345
    4061-xx0 Assembly 15: Electronics-card assemblies AsmIndex 15-1 2 3 3 3 4 4 4 5 5 5 5 Part number 40X0146 40X0147 56P4355 56P4357 56P4359 56P4356 56P4358 56P4360 40X0198 40X0248 40X0199 40X0265 Units/ mach 1 1 1 1 1 1 1 1 1 1 1 1 Units/ kit or pkg 1 1 1 1 1 1 1 1 1 1 1 1 Description Interconnect ...
  • 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
    4061-xx0 Assembly 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 ...
  • Lexmark T640 | Service Manual - Page 350
    4061-xx0 Assembly 19: Cabling diagrams 3      7-36 Service Manual
  • Lexmark T640 | Service Manual - Page 351
    4061-xx0 Assembly 19: Cabling diagrams 3 AsmIndex 19-1 2 3 4 5 Part number 40X0034 40X0156 40X0223 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...
  • 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
    ... Web site at www.lexmark.com/multifunction printers. Install the printer and any options you ... on installing a printer stand, printer base, or 2000-sheet drawer, see the instructions included.... The printer automatically recognizes any drawer that is installed. A drawer consists of a tray and a support...
  • Lexmark T640 | Service Manual - Page 386
    ... 2. Place the support unit on top of any previously installed drawers, or the table or printer cabinet... of any drawer help you position the support unit so the edges are aligned properly... the support unit is securely in place. A B C 3. Attach another optional drawer, a duplex unit, or the printer...
  • Lexmark T640 | Service Manual - Page 387
    ...a duplex unit The duplex unit attaches under the printer, below the standard tray and above any ... 250-sheet duplex unit only works with printers that have a 250-sheet standard tray, ... appropriate duplex unit for the tray size installed in the printer. 1. Place the duplex unit on top of any installed ...
  • Lexmark T640 | Service Manual - Page 388
    ... the power cord before continuing. You can customize the printer memory capacity and connectivity by adding optional cards. The instructions in this section help you install any of the following options: • Memory cards - Printer memory - Flash memory • ...
  • 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 the release latch, and lower the multipurpose feeder. ...
  • 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
    ...a memory card Removal 1. Remove the system board access cover. (See "Accessing the printer system board" on page A-5.) Warning: Printer memory cards are easily damaged by static electricity. Touch something metal such as the printer frame before you touch a memory card. 2. Push the latches...
  • Lexmark T640 | Service Manual - Page 392
    ...1. 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... system board access cover. (See "Accessing the printer system board" on page A-5.) Note: If an...
  • Lexmark T640 | Service Manual - Page 393
    4061-xx0 Installation Note: Flash memory or firmware cards designed for other printers may not work with the printer. 1. Remove the system board access cover. (See "Accessing the printer system board" on page A-5.) Note: If an option card has been installed, you may ...
  • Lexmark T640 | Service Manual - Page 394
    4061-xx0 Installing an option card The printer has two connectors that support the following option cards: Hard disk with adapter card MarkNet N8000 series ... damaged by static electricity. Touch something metal such as the printer frame before you touch an option card. 1. ...
  • Lexmark T640 | Service Manual - Page 395
    ... shield After you have installed options on the printer system board, follow these steps to ... for canceling a print job. • Canceling a job from the printer operator panel. See "Canceling a job from the printer operator panel" on page A-12 • Canceling a job from a computer running Windows. See "...
  • Lexmark T640 | Service Manual - Page 396
    ... taskbar When you send a job to print, a small printer icon appears in the right corner of the taskbar. ... My Computer icon, you can access the printers folder by selecting Start > Settings > Control Panel... your desktop. A list of print jobs appears in the printer window. 2. Select the print job you ...
  • Lexmark T640 | Service Manual - Page 397
    ... options are installed correctly. 1. Make sure the printer is on. 2. Press 3. Press 4. Press on the operator panel.... Printing a network setup page If the printer is attached to a network, print a network setup... support person for a solution, and print another network setup page to verify the printer...
  • Lexmark T640 | Service Manual - Page 398
    ... the printer, you can specify in the driver that you want the printer to hold the job in memory. Once your ... a confidential job to the printer, you must enter a personal identification number (PIN) from the driver. The PIN must be four digits using the numbers 0-9. The job is held in printer memory ...
  • Lexmark T640 | Service Manual - Page 399
    ... print job, and follow the At the printer steps. Macintosh 1. From a word processor, spreadsheet,...: After your job prints, it is deleted from printer memory. Entering a personal identification number ...: After your job prints, it is deleted from printer memory. Appendix A-Options and features...
  • Lexmark T640 | Service Manual - Page 400
    ... are ready to retrieve your confidential print job, and follow the At the printer steps. Macintosh 1. From a word processor, spreadsheet, browser, or other application,...when you are ready to retrieve your confidential print job, and follow the At the printer steps. A-16 Service Manual
  • Lexmark T640 | Service Manual - Page 401
    ... size and type of print media in multiple sources. The printer automatically links the trays; when one tray is ...of print media loaded in tray 2 and tray 4, the printer selects print media from tray 2 until it ... type you loaded, and then press The printer returns to Ready. To disable tray linking, set...
  • Lexmark T640 | Service Manual - Page 402
    ...bins There is one standard output bin on all printer models. Depending on the model you selected, your... several optional output bins available for your printer. If you have multiple output bins,... output source. Linking output bins lets the printer automatically switch output to the next available bin....
  • 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
    ... output bins Linking output bins lets you create a single output source so the printer can automatically switch output to the next available bin. You can also set ... to Configure Bins. appears next to Bin Setup. appears next to Paper Menu. The printer returns to the Ready state. A-20 Service Manual
  • Lexmark T640 | Service Manual - Page 405
    ... print job 8-11 Card Stock & Label Guide 1-8 card stock, guidelines 1-18 cartridge duct, removal 4-23 characteristics, print media 1-15 code update...panel 4-14 blower duct 7-9 Button Test 3-7 buttons accessing service menus 3-1 Button Test 3-7 description function 2-2 operator panel...
  • Lexmark T640 | Service Manual - Page 406
    ...15 PRINT TESTS input source 3-6 Prt Quality Pgs 3-6 PRINTER SETUP Configuration ID 3-21 Defaults 3-20 Edge... Margin 3-10 E envelope feeder parts catalog 7-47 service check 2-84 envelopes guidelines 1-16 EP duct...locations 5-12 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
    ... kit 6-1 preventive 6-1 safety inspection guide 6-1 maintenance approach 1-1 maintenance kits 6-1 menus accessing service menus 3-1 description 2-3 printing menu page 3-30 messages ...service check 2-106 upper front cover 4-11 , 7-3 upper front cover bezel 4-14 I-4 Service Manual
  • Lexmark T640 | Service Manual - Page 409
    ... upper 4-79 paper feed jams 200 and 201 Paper Jam Remove Cartridge 3-41 202 Paper Jam Open Rear Door 3-43 23x and ... 4-51 pick tire integrated tray autocompensator pick roll 4-51 MPF 4-62 PIN entering at the printer 8-15 entering from the driver 8-14 for confidential jobs 8-14 power takeoff shaft and ...
  • Lexmark T640 | Service Manual - Page 410
    ...kit 7-69 removals bevel gear 4-21 cartridge duct 4-23 covers 4-4 fuser wiper ...handle holder 4-16 left door 4-6 paper support removal 4-5 pass thru plate 4-18 ... number 3-20 serial wrap tests 3-9 service checks 5-bin mailbox 2-72 900.... assembly 4-57 main fan 4-56 MPF arm assembly 4-60 I-6 Service Manual...
  • Lexmark T640 | Service Manual - Page 411
    ...12 parts catalog 7-65, 7-66, 7-67, 7-68 service check 2-123 start 2-1 strobe adjustment 3-21 switch, cover closed 2-80 symptoms base printer 2-5 duplex option 2-6 envelope feeder 2-6 high-capacity ...board connectors 5-1 parts catalog 7-30 removal 4-76 service check 2-126 system code 3-1 T theory of...
  • Lexmark T640 | Service Manual - Page 412
    4061-xx0 I-8 Service Manual
  • Lexmark T640 | Service Manual - Page 413
    ... number label-blank 7-3 Upper front cover assembly with Lexmark logo 7-3 Upper cover latch/spring 7-3 Clear LCD bezel 7-3 Operator panel outer bezel with Lexmark logo, T640 7-3 Lower front cover assembly ... side door, 250 1-slot, 000/010 7-3 Cartridge holddown spring 7-9 Cover, left side door,...
  • Lexmark T640 | Service Manual - Page 414
    ... flag, 000/010 7-7 Output 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-...7-27 Transfer roll 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
    ..., 8 mm 7-15 Parts packet (outer shield mounting screw 7-33 Parts packet (pick roll shaft clip 7-15 Parts packet (printhead mounting screw 7-11 Cartridge shipping package, empty 7-69 Parts packet (cable ties 7-3 Nyogel 744 grease packet 7-69 Wear strip 7-21 Plate, 500-sheet tray wear 7-21 ...
  • 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
    4061-xx0 40X1564 40X1565 40X2590 40X2591 40X2592 56P1228 56P1228 56P1279 56P2114 56P2115 56P2116 56P2540 56P4100 56P4102 56P4103 56P4104 56P4105 56P4106 56P4107 56P4108 56P4109 56P4110 56P4111 56P4112 56P4116 56P4117 56P4122 56P4126 56P4127 56P4128 56P4129 56P4130 56P4131 56P4133 56P4137 56P4139 ...
  • Lexmark T640 | Service Manual - Page 418
    ... wheels maintenance kit 7-68 Slide out support 7-47 Plate-250 sheet pass ...7-31 Relocation kit-250/250-sheet printer 7-69 Relocation kit-500/500-sheet printer 7-69 Switch activate spring 7-42, 7-44 Pick roll assembly ...(screw 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... single-sided print job, replace the toner cartridge before replacing the fuser. Replace the fuser 88...(3.46 in.) 95.2 mm (3.75 in.) Replace the toner cartridge 47.8 mm (1.88 in.) 96.8 mm (3....
  • 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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