Image Quality
Phaser 7100 Service Manual Xerox Internal Use Only3-16
4. Check the Laser Unit.
Use paper to cover half of the Laser Unit window
and resend a print job.
Is the printout half white and half black?
Note: If the Laser Unit is normal, the half will
have the test pattern printed on it instead of
being solid black.
Replace the Laser Unit
(REP 7.1 ROS Assembly
(Laser Unit)/ Front
Spring Assembly/ Right
Rear Spring Assembly/
Left Rear Spring
Assembly on
page 4-130).
Go to step 5.
5. Check the HVPS2 PWB connectors.
Are the connectors seated securely?
Go to step 6. Reconnect the wiring
harness connectors.
6. Check the HVPS1 PWB connector.
Is the connector seated securely?
Replace the HVPS1
PWB (REP 12.13
HVPS1 PWB on
page 4-221).
Reconnect the wiring
harness connector.
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No