Lexmark Optra C710 Service Manual - Page 106

5016-001 FRU 1 Carriage Unit Motor (M3) Engine Board Cable 2 Carriage Unit Block Assembly Carriage Unit Motor Idler Gear Right Carriage Unit Plate Carriage Assembly Action Check the carriage unit motor for proper operation. Check the voltages on the motor. Carriage unit motor connector (M3). Pin # 1 (Yellow) 2 (Red) 3 (White) 4 (Brown) 5 (Violet) Voltage Signal PH1B+24 V dc PH1B+ PH1A+ PH1A- Voltage Static +24 V dc +24 V dc +24 V dc +24V dc +24V dc Voltage Motor On 20 - 24 V dc +24 V dc 20-24 V dc 20-24 V dc 20-24 V dc Note: All voltages are approximate values. If the voltage on pin 2 is incorrect, check cable MK2. If good, replace the following in the order shown: 1. Engine board 2. Carriage motor assembly If the voltages on pins 1, 3, 4 and 5 are incorrect, check cable MK2. If good, replace the following FRU's in the order shown: 1. Carriage motor assembly 2. Engine board Check the carriage unit motor idler gear for signs of wear or breakage. If the motor idler gear is good, check the right side carriage plate for signs of broken teeth or wear on the plate gear. Check the carriage for correct operation. If problems are found, repair as necessary. 2-40 Service Manual