Close Top Cover; Fuser Failure, Engine Fuser Low Heat Error, Or Engine Fuser Over Heat Error; Laser Failure - Xerox Phaser 3500 Service Manual

Step Action and Questions
2. 1. Verify the sensor and actuator on the
Fuser is operating correctly.

Close Top Cover

Step Action and Questions
1. 1. Visually inspec the top cover and the
top cover actuator.
2. Is the top cover or actuator damaged?
2. 1. Use diagnostics to test the cover open
sensor.
2. Does the sensor function properly?
Fuser Failure, Engine Fuser Low Heat Error, or Engine Fuser
Over Heat Error
Step Action and Questions
1. 1. Does the error report Fuser Failure?
2. 1. Check the thermistor.
2. Is the circuit open?
3. 1. Check the line voltages across the
thermostats.
2. Are they open?
4. 1. Is the Fuser getting power?

Laser Failure

Step Actions and Questions
1. 1. Reseat the connections to the laser
and visually inspect the laser unit for
damage.
2. Did this correct the problem?
Phaser® 3500 Laser Printer Service Manual
2-15
Repair Analysis Procedures
Yes No
Replace the Main Replace the Fuser.
Board.
Replace the SMPS.
Yes No
Replace the Top Go to Step 2.
Cover.
Replace the Main Replace the Sensor.
Board.
Yes No
Go to Step 2. Go to Step 3.
Replace the Fuser. Replace the Main
Board.
Replace the Fuser. Go to Step 4.
Replace the Fuser. Replace the SMPS.
Replace the Main
Board.
Yes No
Complete Go to Step 2.