Lexmark 2380 Service Manual - Page 42

. FRU 1 Carrier 2 Home Position Sensor Sub Logic Board Short Flexible Cable Action If there is no Home Position Error, check the carrier belt and the ribbon cartridge for wear or damage. Check the belt and pulley engagement. Manually move the carrier the full length of the carriage to check for binds and to make sure the ribbon advances when the carriage moves in either direction. If the carrier binds check the following: • Correct printhead-to-platen gap. • Clean and lubricated carrier shaft. • Idler pulley not binding. • Ribbon drive rack gear teeth not damaged. If the carrier still binds: Remove the belt and move the carrier again. If the bind is gone, replace the carrier motor. If the bind still exists, replace the carrier. If the carrier moves manually without binding but the Home Position Error still occurs, verify that the main logic board is receiving +26 V dc on pin CP11-1. Check that the 5 V dc home position sensor signal is getting to the main logic board. Check CP3-7 on the main logic board. Check CP6-1 on the sub logic board. Replace the sensor, the sub logic board, or the short flexible cable as necessary. 2-18