C790 Series Maintenance Guide April 2011 www.lexmark.
Contents Maintaining the printer................................................................................3 Cleaning the exterior of the printer..........................................................................................................3 Cleaning the printhead lenses...................................................................................................................3 Storing supplies............................................................................................
Maintaining the printer Periodically, certain tasks are required to maintain optimum print quality. Cleaning the exterior of the printer 1 Make sure that the printer is turned off and unplugged from the wall outlet. 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. 2 Remove paper from the standard exit bin. 3 Dampen a clean, lint-free cloth with water.
3 Locate the four printhead lenses. 4 Clean the lenses using compressed air. Warning—Potential Damage: Do not touch the printhead lenses. 5 Reinstall the print cartridges. 6 Close the front door. Storing supplies Choose a cool, clean storage area for the printer supplies. Store supplies right side up in their original packing until you are ready to use them.
• • • • High humidity above 80% Salty air Corrosive gases Heavy dust Checking the status of supplies A message appears on the display when a replacement supply item is needed or when maintenance is required. Checking the status of supplies from the printer control panel From the home screen, touch Status/Supplies > View Supplies. Checking the status of supplies from a network computer Note: The computer must be connected to the same network as the printer.
Recommended print cartridge and part number Part name Lexmark Return Program Cartridge Regular cartridge Cyan Print Cartridge Cyan Extra High Yield Print Cartridge C792A1CG C792X1CG C792A2CG C792X2CG Magenta Print Cartridge Magenta Extra High Yield Print Cartridge C792A1MG C792X1MG C792A2MG C792X2MG Yellow Print Cartridge Yellow Extra High Yield Print Cartridge C792A1YG C792X1YG C792A2YG C792X2YG Black Print Cartridge Black Extra High Yield Print Cartridge C792A1KG C792X1KG C792A2KG C792X2KG
Ordering a cleaning kit Use the wet and dry wipes from the cleaning kit to clean the touch screen. Part name Part number Cleaning kit (wet and dry wipes) 40X0392 Replacing supplies Replacing a print cartridge 1 Open the front door. 2 Lift the green handle and pull the print cartridge. Grasp the top handle and lift the cartridge out of the machine.
3 Place the old cartridge in the replacement cartridge shipping box, and then attach the return label to the box for shipping. 4 Unpack a new print cartridge. Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print quality of future print jobs.
5 Shake the new cartridge front-to-back and side-to-side to evenly distribute the toner. 6 Remove the red packing strip from the new cartridge. 7 Insert the new cartridge into the printer, and then push the green handle back in place. Note: Make sure the cartridge is fully pushed in.
8 Close the front door. Replacing the waste toner bottle Replace the waste toner bottle when 82.xx Replace waste toner bottle appears. The printer will not continue printing until the waste toner bottle is replaced. 1 Remove the replacement waste toner bottle from its shipping box, and then unpack it. 2 Open the printer front door, and then open tray 1. 3 Pull the green tabs sideways, and then grasp and pull the tabs with both hands to remove the waste toner bottle.
5 Place the bag into the shipping box you removed the replacement part from. 6 Peel the recycling label off, and place it on the shipping box. 7 Insert the new waste toner bottle into the printer. 8 Close tray 1, and then close the front door. Moving the printer Before moving the printer CAUTION—POTENTIAL INJURY: The printer weight is greater than 18 kg (40 lb) and requires two or more trained personnel to lift it safely.
• Turn the printer off using the power switch, and then unplug the power cord from the wall outlet. • Disconnect all cords and cables from the printer before moving it. • Lift the printer off of the optional drawer and set it aside instead of trying to lift the drawer and printer at the same time. Note: Use the handholds located on both sides of the printer to lift it off the optional drawer. Warning—Potential Damage: Damage to the printer caused by improper moving is not covered by the printer warranty.
