Lexmark WinWriter 100 Service Manual - Page 21

4076-0WJ Operator Panel Service Check FRU OR PROCEDURE 1 Power Supply 2 System Board 3 Operator Panel Card Operator Panel Cable ACTION Disconnect J11 from the system board and check the following voltages on the power supply cable: J11-1 to GND = +5V dc J11-3 to GND = +24 V dc If you do not have correct voltage, replace the power supply. Be sure to unplug the machine before you reconnect the power supply to the system board. Turn the printer on Check for +5 V dc at test point CE/TP near the operator panel connector on the system board Check the operator panel cable for continuity. If the cable is good, replace the operator panel. If the symptom remains, replace the system board. Paper Feed Service Check If your machine does not have paper jam problems, go on to the service check. If your machine does have a paper jam problem, examine the machine for the following before you begin the service check. Check the entire paper path for obstructions. • Make sure there is not too much paper in the ASF. • Make sure the correct type of paper is in the machine. • Check for static in the paper. • Make sure the rear of the carrier guide is on top of the paper guide. Diagnostic Information 10