Lexmark Optra C710 Service Manual - Page 177

5016-001 C Tray x is correctly installed and "Insert Tray x" displays. Note: If the detect board for the tray x cable (detect board to interconnect board), LVPS, LVPS fuse, interconnect board, option cable (OP), engine cable (OP) or engine board are failing, this message may display. FRU 1 Paper Tray x 2 Option LVPS Fuse 3 OP Cable (Option) OP Cable (Printer) 4 Paper Detect/ Paper Size Detect Board Tray x 5 Interconnect Board Engine Board Action Check tray x to be sure the flag molded in the side of the tray is not damaged and contacts the sensor flag. Check the fuse in the option LVPS and replace it, if defective. If the fuse continues to blow, replace the LVPS assembly. Check the cables for correct installation and signs of damage. Check the paper detect/paper size board for correct operation, If incorrect replace the board assembly. If no problems have been found, replace the following FRUs in the order shown: 1. Interconnect board assembly 2. Engine board assembly Diagnostic Information 2-111