Lexmark C912 Service Manual - Page 122

5055-xxx FRU 3 • Registration roller • Paper exit rollers • Registration sensor • Registration clutch • Punch clutch punch unit • Timing belt 4 • Elevator motor • Tray wires Action Run the hole punch test in diagnostic mode to test the hole punch function. Observe the elevator motor operation while powering the printer up. Marks on paper service check If you have evenly spaced marks on the paper, measure the distance between the marks and locate the symptom below. Check the assembly for dirt or damage and clean as necessary. Run a test print to verify the problem has been corrected. The indicated assemblies are replaced by the customer at prescribed intervals. If you remove the transfer belt, do not turn it upside down. Toner will fall from the waste toner box onto the transfer sheets and roller(s) inside the belt. This causes lower transfer efficiency and washed out colors. Distance between marks 27 mm 31.5 mm 45.1 mm 46.9 mm 46.9 mm 47.5 mm 64.5 mm 94.2 mm 139.2 mm FRU / supply item Absorption/charge roller (transfer roller) Photodeveloper charge roller Supply roller (toner cartridge) Upper registration roller Lower registration roller Developer roller (toner cartridge) OCR (oil coating roller) Photodeveloper drum Fuser upper roller 2-72 Service Manual