Lexmark Optra C710 Service Manual - Page 105

5016-001 G Double feeding from MPT tray. FRU 1 DPT Pad Assembly Action The DPT assembly design helps prevent double feeding from the MPT tray. Check the DPT assembly for proper operation and check the pad to be sure it is not worn, damaged or missing. Repair as necessary. Carriage Unit Service Check Note: The carriage unit motor rotates the carriage by 90 degree angles when switching from one color to another. Once the carriage home position sensor detects the carriage home position detect rib, performed as many times as specified, the carriage stops at the specified position. 30 Cyan Toner Cartridge missing message displays, toner cartridge installed. • If this message displays and the carriage unit motor does not turn, go to step 1 in the table below. Note: The motor can be checked by removing it from the printer with the cable attached. Verify the motor turns during POR. • If this message displays, and the carriage unit motor turns but the carriage does not move, go to step 2 in the table below. • If this message displays, and the carriage unit motor and carriage turn, go to step 3 in the table below. Diagnostic Information 2-39