Iq-5 In/ Out Density Difference - Xerox Phaser 7500 Service Manual

IQ-5 In/ Out Density Difference

Phaser 7500 Printer Service Manual
The densities between the IN and OUT (front and rear) sides are different.
Initial Actions
• Check the paper transfer path.
• Ensure there are no debris on the transfer path.
Troubleshooting Reference
Applicable Parts
LED Print Head, PL2.1.2
■
Imaging Unit, PL8.1.4
■
Cause (1st)
• The LED Print Head Z direction positioning pin is not in contact with the
Photoreceptor.
• Failure in the retract mechanism.
• The positioning plate cannot fit in.
• The LED Print Head positioning pin is bent.
• The tip of the pin is contaminated.
Troubleshooting Procedure
Step Actions and Questions
1 Replace the Imaging Unit (REP 1.2,
page
Does the error still occur?
Note
As the retract mechanism for the LED Print Head also acts as the retract
mechanism for the Deve, it may also cause Deve positioning failure.
Example Print
8-10).
Print-Quality Troubleshooting
Out Density Diff
Yes No
Replace the Troubleshooting
LED Print Head complete.
(REP 2.1,
page 8-18).
5-29