Diagnostic information 2-95Fuser solenoid service checkCAUTION: There is a danger from hazardous voltage in the area of the printer where you areworking. Unplug the printer before you begin, or use caution if the printer must receive power inorder to perform the task.Service tip: Try changing the envelope enhance level setting. A different setting may correct the problem.Note: Check the fuser envelope conditioner solenoid adj ustment as described in the adjustment section “Fusersolenoid adjustment” on page 4-2.FRU Action1 Fuser envelope conditionersolenoid Observe the operation of the fuser solenoid by removing the redriveassembly. Check for proper mechanical operation of the solenoidand associated hardware, link, and so on. If correct, check theresistance of the solenoid between J4-1 and J4-2 on the fuser controlboard. The resistance measures between 5 ohms and 10 ohms. Ifincorrect, replace the fuser assembly. If correct, go to step 2.2 System board Measure the voltage at the +50 V dc test point on the system board.The voltage should measure approximately +50 V dc. If incorrect, goto step 3. If incorrect, go to step 4.3 LVPS Measure the voltage at CN2-18 on the LVPS. The voltage shouldmeasure approximately +50 V dc. If incorrect, replace the LVPSassembly. If correct, replace the system board. If this does not fix theproblem, replace the interconnect card assembly.4 Fuser board to systemboard cable Make sure the cable is connected properly to the system board andfuser control board. Reconnect the cable, if necessary. If the cable isconnected correctly, go to step 5.5 Fuser assembly If no problems were found in steps 1 through 4, replace the fuserassembly. See “Fuser assembly removal” on page 4-27.J21J1 J6J4J51111
