Lexmark C782 Service Manual - Page 91

5061 271.xx paper jam service check Output bin Note: Before proceeding with this service check, run the Output Bin x Sensor Test and check for the failing sensor. Sensor Tests: XNF F P Near Full (Upper part of sensor assembly) Full (Lower part of sensor assembly) Pass Thru Sensor Step 1 2 3 4 Actions and questions DC motor cable connection-Make sure the DC motor connector is correctly installed at J4 on the output expander option board. Is the cable installed correctly? DC motor mechanical linkage assembly-Check the resistance of the motor on the cable connector. Check the resistance between J4-1 and J4-2. The resistance measures between 115 ohms and 135 ohms. Is the resistance correct? DC motor mechanical linkage assembly-Check for continuity between J4-1 and J4-2 and the case of the motor. It measures infinity. Is there continuity between J4-1 or J4-2 and the case of the motor? Note: If the motor is shorted from either J4-1 or J4-2 and the case of the motor, it may be necessary to replace the output expander control board. Output expander board-Disconnect the motor cable from J4, and check the voltages at J4 on the board. Note: All voltages are approximate values: J4-Motor cable (motor idle) J4-1 +24 V dc J4-2 +24 V dc J4-5 +5 V dc J4-6 +5 V dc Warning: Be careful not to short to adjacent pins on the connector. Are the voltages correct? Yes Go to step 2 Go to step 3 Replace the DC motor mechanical linkage assembly. Replace the DC motor mechanical linkage assembly. No Install the cable correctly. Replace the DC motor mechanical linkage assembly. Go to step 4 Replace the output expander control board. Diagnostic information 2-49