Lexmark C720 Service Manual - Page 150

5024-001 OPC Belt (Photo Developer) Cartridge Drive Service Check FRU Action 1 OPC Belt Cartridge Check the OPC belt cartridge for damage and proper installation and replace, if necessary. 2 Belt Cartridge (BC) Lock Levers Ensure cartridge installation guides and latches are not damaged and replace, if necessary. 3 Main Motor Board Gear Ensure the main motor board gear Assembly assembly is not damaged and replace, if necessary. Ensure the main gear unit is not damaged and replace, if necessary. Operator Panel Service Check If the printer detects a problem with the operator panel assembly, operator panel cable, the controller RIP board or when a POR does not complete, the printer emits 5 beeps. If the operator panel operates properly, except for a PEL or a few PEL's missing or broken, run the "LCD test" in the diagnostic mode. See "Diagnostic Mode" on page 3-5 for details. FRU 1 Operator Panel Cable Action Ensure the operator panel cable is plugged into the operator panel. Ensure the operator panel cable is plugged into P2CN on the main engine (MCTL P.W.B.) board. Ensure the control RIP board is correctly plugged in. Check the operator panel cable for continuity. Replace if necessary. 2-70 Service Manual