Xerox PHASER 8500 Service Manual page 216

Print-Quality Troubleshooting
5-10
Color is Uneven or Wrong Troubleshooting Procedure (Continued)
Step Questions and Actions
Check thermal regulation of the Drum.
3
Run the Service Diagnostics Drum Thermal
Check test, see "Temperature Status" on
page 4-47.
Are the Drum thermal values out of the
appropriate range?
4 Check the Drum Fan for correct installation
and operation.
Check that the Drum Temperature Sensor is
5
in contact with the Drum.
Clean or replace the Drum Temperature
Sensor.
Did this correct the problem?
Phaser 8400/8500/8550/8560 Color Printer Service Manual
Yes No
Go to Step 4. Go to Step 5.
Go to Step 5. Replace the
Drum Fan.
Complete. Replace in the
following
order:
Drum
■
Heater Relay
Board
Drum
■
Assembly
Electronics
■
Module