Lexmark X 850 Owners Manual
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Component locations5-11 7500-XXX Multi connect cable assembly 2 connects the following: - Fuser sensor cable assembly - Sensor (Tray 2 feed out)RIP card cable assembly Printhead cable assembly
5-12MFP Service Manual 7500-XXX Exit Interface Cable Assembly
Component locations5-13 7500-XXX TTM components 2TM/TTM clutch assembly 2TM/TTM drive motor 2TM/TTM controller card assembly Sensor (tray 4 feed out) Sensor (tray 3 feed out) Switch (2TM/TTM left door interlock)Sensor (pre-feed) Sensor (media level) Sensor (media out) Switch (TTM media size)
5-14MFP Service Manual 7500-XXX Duplex components Sensor (duplex wait) Switch (duplex left door interlock) Duplex drive motor Duplex controller card assembly
Component locations5-15 7500-XXX Exit 2 components Sensor (standard bin full exit 2) Sensor (exit 2) Sensor (exit 2 media shift HP) Media diverter solenoid Switch (exit 2 left door interlock) Exit 2 drive motor Media shift motor Not used
Preventive maintenance6-1 7500-XXX 6. Preventive maintenance This chapter describes procedures for printer preventive maintenance. Follow these recommendations to help prevent problems and maintain optimum performance. Safety inspection guide The purpose of this inspection guide is to aid you in identifying unsafe conditions. If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you correct the hazard. Check the following items: •Damaged, missing, or altered parts, especially in the area of the on/off switch and the power supply •Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover •Possible safety exposure from any non-Lexmark attachments LEXMARK X850e, X852e, X854eEVERY SERVICE CALL EVERY 300K NOTE: MEDIA TRAY–PRINTER 2TM/TTM Media Side Guides Inspect Inspect Check for correct positioning Media End Guide Inspect Inspect Check for correct positioning Separation Pad Inspect Clean Damp cloth Tray Lift Gear Group Inspect MEDIA FEED UNIT–PRINTER TTM Feed Roll Inspect Replace Verify page count before replacing Pick Roll Inspect Replace Verify page count before replacing Separation Roll Inspect Replace Verify page count before replacing MPF feed roll Inspect Clean Water or alcohol Transport Roll Assembly Clean Water or alcohol Sensor (registration) Clean Brush or blower brush Sensor (tray 2 feed-out) Clean Brush or blower brush MEDIA FEED UNIT HCF (if equipped) Feed Roll Inspect Replace Verify page count before replacing Pick Roll Inspect Replace Verify page count before replacing Separation Roll Inspect Replace Verify page count before replacing HCF Transport Roll Assembly Clean Water or alcohol Front Edge Guide Inspect Check for correct positioning Rear Edge Guide Inspect Check for correct positioning Long Edge Guide Inspect Check for correct positioning Separation Pad Inspect Clean Damp cloth TRANSFER ROLL Transfer Roll Inspect Replace FUSER UNIT Fuser Unit Inspect Replace Sensor (fuser exit) Clean Blower brush DUPLEX Duplex Transport Roll (2) Clean Water or alcohol
6-2MFP Service Manual 7500-XXX Lubrication specifications Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than those specified can cause premature failure. Some unauthorized lubricants may chemically attack polycarbonate parts. Use IBM no. 10 oil, P/N 1280443 (Approved equivalents: Mobil DTE27, Shell Tellus 100, Fuchs Renolin MR30), IBM no. 23 grease (Approved equivalent Shell Darina 1), and grease, P/N 99A0394 to lubricate appropriate areas. Scheduled maintenance The LCD displays 80 scheduled maintenance at each 300K page count interval. It is necessary to replace the fuser assembly, transfer roller, and feed, pick and separation rollers at this interval to maintain the print quality and reliability of the printer. The parts are available as a maintenance kit with the following part numbers: 40X2375–Maintenance Kit, 110 V 40X2376–Maintenance Kit, 220 V 40X2377–Maintenance Kit, 100 V The ADF requires scheduled maintenance at each 150K page count interval. It is necessary to replace the feed/ pick roll assembly and the separation guide assembly at this interval to maintain ADF media feed reliability. The parts are available as a maintenance kit with the following part number: 40X2734–Maintenance Kit, ADF LEXMARK X850e, X852e, X854eEVERY SERVICE CALL EVERY 300K NOTE: Duplex Transport Roll Middle Clean Water or alcohol EXIT 2 Exit 2 Transport Roll Clean Water or alcohol Exit 2 Media Exit Roll Clean Water or alcohol FINISHER (if equipped) Bridge Unit Transport Belts Clean Water or alcohol Main Paddles (3) Inspect Sub Paddles (2) Inspect Clamp Paddles (3) Inspect Punch Waste Box Clean Stapler Cartridge Inspect Inspect Check for correct operation FLATBED SCANNER Mirrors (3) Inspect Clean Glass cleaner Lens Inspect Clean Glass cleaner Small Platen Glass Clean Clean Glass cleaner Large Platen Glass Clean Clean Glass cleaner LEXMARK X850e, X852e, X854eEVERY SERVICE CALL EVERY 150K NOTE: ADF Feed Pick Roll Assembly Inspect Replace Separation Roll Guide Assembly Inspect Replace ADF Registration Roll AssemblyInspect Clean Water or alcohol ADF Feed-Out Roll Assembly Inspect Clean Water or alcohol ADF Exit Roll Assembly Inspect Clean Water or alcohol ADF Transport Roll Assembly Inspect Clean Water or alcohol
Preventive maintenance6-3 7500-XXX After replacing the kit, the maintenance count must be reset to zero to clear the “80 scheduled maintenance” message. To reset the maintenance count 1.Turn off the printer 2.Press and hold the 2 and 6 buttons simultaneously. 3.Turn on the printer. 4.Release the buttons after 10 seconds. The Configuration Menu appears on the LCD. 5.Touch Reset Maintenance Counter from the Configuration Menu. 6.Reset Maintenance Counter appears in the header and Ye s and No appears below the header. 7.To cancel the reset operation, press Back or No. All other button presses are ignored. 8.To initiate the reset operation, select Ye s. The maintenance count resets to zero and the LCD returns to the Configuration Menu. When performing the 300K scheduled maintenance procedure, the following areas should be cleaned of media dust and toner contamination: •Media trays •PC cartridge area •Transfer roll area •Duplex area •Exit 2 area •Standard bins •Bridge unit area (if equipped) •Finisher media bins (if equipped)