Lexmark T620 Service Manual - Page 96

4069-5XX/7XX Fuser Solenoid Service Check Service Tip: Try changing the envelope enhance level setting. A different setting may correct the problem. Note: Check the fuser envelope conditioner solenoid adjustment as described in the adjustment section "Fuser Solenoid Adjustment" on page 4-3. FRU Action 1 Fuser Envelope Conditioner The operation of the fuser solenoid Solenoid can be observed by removing the redrive assembly. Check for proper Fuser Solenoid Cable to DC mechanical operation of the solenoid Cable inside Fuser Assembly and associated hardware, link and so on. If correct, check the resistance of the solenoid. The resistance measures between 5 ohms and 10 ohms. If incorrect, replace the solenoid assembly. Check continuity of the fuser solenoid cable to DC autoconnect connector. If incorrect, replace the cable. 2 Fuser DC Cable (System Board to Fuser) Check for continuity of the DC fuser cable that is attached between J4 on the system board and the DC autocount on the fuser assembly. If the cable does not measure continuity, replace the cable. If the cable measures continuity, replace the system board. Input Sensor Service Check Service Tip: Run the Base Sensor Test. Check the input sensor for proper operation. The display changes from open to closed as the sensor flag is manually moved in and out of the sensor. 2-68 Service Manual