Lexmark C912 Service Manual - Page 126

5055-xxx Paper has stopped at the registration roller or has not reached the fuser (areas C, E, 240, 24x). FRU 1 • Registration roller clutch • Registration roller • Transfer belt unit • Rear paper feed guide 2 • Registration sensor • Printer controller board Action Check these parts for wear or damage. Replace as necessary. Be sure all guide surfaces in the paper path are free of dirt. Check the registration roller clutch for continuity. Be sure connector CN13 on the printer controller board is connected properly. Check for a fluctuation of between 0 V and +5 V between pins 1 and 2 of connector CN11 on the printer controller board while actuating the sensor. If the voltage fluctuates as stated above, replace the printer controller board. If the voltage does not fluctuate, replace the sensor. Paper has exited the registration roller and entered the fuser (areas A and B). FRU 1 • Transfer belt unit • Rear paper guide • Discharge brush • Fuser 2 Fuser separation pawl Action Remove any buildup of toner. Replace any damaged or worn parts. Check the paper exit flag on the fuser for damage. Replace the fuser if necessary. Replace the fuser if paper jams cannot be removed. 2-76 Service Manual