Lexmark C 950 Service Manual
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Connector locations 5-49 5058-030 Go Back Previous Next High capacity feeder 1 Plug/JackCalloutPlug/jack descriptionConnects to J678 10 Lower engine PCBAHCF controller card PCBA J800 11 PF/JF54 2 Sensor (tray 5 feed out)HCF controller card PCBA PF/JF56 9 HCF feed lift motorHCF controller card PCBA PF/JF56A 9 Sensor (tray 5 media out)HCF controller card PCBA PF/JF56B 9 HCF controller card PCBA• Sensor (tray 5 media level) • Sensor (tray 5 pre-feed) PF/JF58 1 HCF feed lift motorHCF controller card PCBA PF/JF60 7 Sensor (tray 5 media out)HCF controller card PCBA PF/JF61 5 Sensor (tray 5 pre-feed)HCF controller card PCBA PF/JF62 6 Sensor (tray 5 media level)HCF controller card PCBA PF/JF67 4 Sensor (tray 5 feed out)HCF controller card PCBA FS001 3 Sensor (HCF top door interlock)HCF controller card PCBA FS002 3 Sensor (HCF top door interlock)HCF controller card PCBA FS003 8 Sensor (HCF unit docking interlock)HCF controller card PCBA FS004 8 Sensor (HCF unit docking interlock)HCF controller card PCBA
5-50 Service Manual 5058-030 Go Back Previous Next High capacity feeder 2 Plug/JackCalloutPlug/jack descriptionConnects to PF/JF01 4 HCF controller card PCBA• Sensor (HCF media size) • Sensor (tray 5 feed out) PF/JF02 5 HCF controller card PCBA• Sensor (tray 5 media out) • Sensor (tray 5 pre-feed) • Sensor (tray 5 media level) PF/JF03 6 HCF controller card PCBA• Lower engine PCBA • Upper engine PCBA PF/JF04 7 HCF controller card PCBABase printer PF/JF05 8 HCF controller card PCBASensor (HCF top door interlock) PF/JF06 9 HCF controller card PCBA• HCF feed lift motor • HCF transport motor PF/JF08 3 HCF controller card PCBASensor (HCF unit docking interlock) PF/JF51 2 HCF controller card PCBASensor (HCF media size) PF/FJ52 1 HCF controller card PCBASensor (HCF media size) PF/JF53 10 HCF controller card PCBASensor (HCF media tray set) PF/JF57 11 HCF controller card PCBAHCF transport motor
Preventive maintenance 6-1 5058-030 Go Back Previous Next 6. Preventive maintenance This chapter describes procedures for printer preventive maintenance. Follow these recommendations to help prevent problems and maintain optimum performance. Inspection guide The purpose of this inspection guide is to aid you in identifying the intervals, based on page count, at which parts must be inspected (for visible physical damage), cleaned, or replaced. As you service the machine, check the following: •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 C950EVERY SERVICE CALLEVERY 160KEVERY 320KEVERY 480KNOTES MEDIA TRAY—ALL Media side guides Inspect Inspect Inspect Inspect Check for correct positioning Media end guide Inspect Inspect Inspect Inspect Check for correct positioning Separation pad Inspect Clean Clean Clean Damp cloth Tray lift gear assembly Inspect Inspect Inspect MEDIA FEEDERS—ALL Feed roller Inspect Replace Replace Replace Verify page count before replacing Pick roller Inspect Replace Replace Replace Verify page count before replacing Separation roll Inspect Replace Replace Replace Verify page count before replacing MPF feed rollers Inspect Inspect Inspect Clean Water or alcohol Media transport roll assembly Clean Clean Clean Water or alcohol Sensor (registration) Clean Clean Clean Brush or blower brush Sensor (tray 1 feed-out) Clean Clean Clean Brush or blower brush Sensor (tray 2 feed-out) Clean Clean Clean Brush or blower brush Sensor (tray 3 feed-out) Clean Clean Clean Brush or blower brush Sensor (tray 4 feed-out) Clean Clean Clean Brush or blower brush PRINTHEAD Printhead slit glass (4) Clean Clean Clean Clean Printhead cleaning tool
6-2 Service Manual 5058-030 Go Back Previous Next 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. Use Nyogel type 774 to lubricate the Fuser Drive Assembly and Nyogel 744 to lubricate the ITU and Cartridge Drive assemblies. DEVELOPER UNITS Transfer Developer housing (4) Replace C developer carrier Replace M developer carrier Replace Y developer carrier Replace K developer carrier Replace TRANSFER ROLL 2nd Transfer Roll Inspect Inspect Replace Inspect TRANSFER BELT UNIT Transfer belt Inspect Inspect Inspect Replace Transfer belt cleaning assembly Inspect Replace Replace Replace FUSER UNIT Fuser unit Inspect Inspect Replace Inspect Sensor (fuser exit) Clean Clean Clean Blower brush DUPLEX Duplex media transport roll (2) Inspect Inspect Clean Water or alcoholLexmark C950EVERY SERVICE CALLEVERY 160KEVERY 320KEVERY 480KNOTES
Preventive maintenance 6-3 5058-030 Go Back Previous Next Scheduled maintenance The LCD displays 80 scheduled maintenance (xxxK) when it reaches 160K, 320K and 480K page counts. It is necessary to replace the appropriate maintenance kit at this interval to maintain the print quality and reliability of the printer. The LCD displays 80 scheduled maintenance (80K) when multiple jams occur from a specific media feeder after the counter exceeds 80K. It is necessary to replace the media feed rollers at this interval to maintain the reliability of the printer. The replacement media feed roller kit can be located in the media tray 1 beneath the plastic cover, as shown in the following image. The parts are available as a maintenance kit with the following part numbers: Kit Contents 40X7540—160K Maintenance Kit • Transfer belt cleaner • 2nd transfer roller • Suction filter • Media feed roller kit (12) 40X7550—320K Maintenance Kit (110V) • Fuser (110V) • Transfer belt cleaner • 2nd transfer roller • Suction filter • Media feed roller kit (12) 40X7568—320K Maintenance Kit (100V) • Fuser (100V) • Transfer belt cleaner • 2nd transfer roller • Suction filter • Media feed roller kit (12) 40X7569—320K Maintenance Kit (220V) • Fuser (220V) • Transfer belt cleaner • 2nd transfer roller • Suction filter • Media feed roller kit (12)
6-4 Service Manual 5058-030 Go Back Previous Next 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.Enter the Configuration Menu. 2.1Press and hold the 2 and 6 buttons simultaneously. 2.2Turn on the printer. 2.3Release the buttons after 10 seconds. The Configuration Menu appears on the LCD. 3.Touch Reset Maintenance Counter from the Configuration Menu. 4.From the options displayed, select the maintenance kit to reset. 5.Touch Yes to reset the maintenance counter value. Touch No or Back to return to the previous menu. The maintenance count resets to zero, and the LCD returns to the Configuration Menu. When performing the 160K, 320K, or 480K scheduled maintenance procedure, the following areas should be cleaned of media dust and toner contamination: •Media trays •PC cartridge area •Developer housings area (480K) •Transfer roll area •Duplex area •Standard bin •Bridge unit area (if equipped) •Finisher media bins (if equipped) 40X7560—480K Maintenance Kit • Transfer belt • Transfer belt cleaner • 2nd transfer roller • Suction filter • Media feed roller kit (12) • Empty developer housing (4) • C developer carrier • M developer carrier • Y developer carrier • K developer carrier Kit Contents
Preventive maintenance 6-5 5058-030 Go Back Previous Next Cleaning the printer Cleaning the exterior of the printer 1.Make sure that the printer is turned off and unplugged from the electrical outlet. 2.Remove paper from the standard exit bin. 3.Dampen a clean, lint-free cloth with water. Warning: Do not use household cleaners or detergents, as they may damage the finish of the printer. 4.Wipe only the outside of the printer, making sure to include the standard exit bin. Warning: Do not use household cleaners or detergents, as they may damage the finish of the printer. 5.Make sure the paper support and standard exit bin are dry before beginning a new print job. CAUTION—SHOCK HAZARD: To avoid the risk of electric shock when cleaning the exterior of the printer, unplug the power cord from the wall outlet and disconnect all cables to the printer before proceeding.
6-6 Service Manual 5058-030 Go Back Previous Next Cleaning the printhead lenses Clean the printhead lenses when you encounter print quality problems. 1.Open the front door. 2.Slide the release lever to the left to unlock the cover.
Preventive maintenance 6-7 5058-030 Go Back Previous Next 3.Open the cover. Warning: To avoid overexposing the photoconductor unit, do not leave the cover open for more than 10 minutes. 4.Locate the printhead wipers.
6-8 Service Manual 5058-030 Go Back Previous Next 5.Gently pull the printhead wipers out until it stops, and then slowly slide them back into place. 6.Close the cover. 3x 3x 3x