Install Or Reseat Fuser, Code 41 - Xerox 7750DXF - Phaser Color Laser Printer Service Manual

Install or Reseat Fuser, Code 41

Front thermistor open error. This is a cold condition.
Note
If this failure reoccurs three times successively, an Engine NVRAM value is set
preventing further printer use until the Clear Tech Rep Fault (see pg. 6-20) is
performed.
Troubleshooting References
Applicable Parts
Fuser
Engine Control Board
Troubleshooting Procedure
Step Actions and Questions
1 1. Turn OFF power and remove the Fuser
Assembly.
2. Measure the resistance between the
fuser connector P600-4 and P600-6.
3. Does the resistance measure between
30 K and 190 K Ohms?
2 1. Reinstall the fuser assembly.
2. Enter service diagnostics.
3. From the Sensor Tests run the Fuser
Temperature test.
4. Is the temperature indicated
approximately 165
3 1. Turn OFF printer power.
2. Check for an open circuit or poor
connection between J600-4 to J600-6
to J404A-2.
3. Is the wiring OK?
3-26
Wiring and Plug/Jack Map References
o
C?
Phaser 7750 Printer Service Manual
Yes
Go to step 2.
Replace the
engine control
board.
Replace the
engine control
board.
No
Replace the fuser
assembly.
Go to step 3.
Repair or replace
the wiring
harness.