Phaser 7500 Printer Service Manual
5-29
Print-Quality Troubleshooting
IQ-5 In/ Out Density Difference
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.
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.
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.
Troubleshooting Reference
Applicable Parts
Example Print
■
LED Print Head, PL2.1.2
■
Imaging Unit, PL8.1.4
Troubleshooting Procedure
Step
Actions and Questions
Yes
No
1
Replace the Imaging Unit (REP 1.2,
).
Does the error still occur?
Replace the
LED Print Head
(REP 2.1,
).
Troubleshooting
complete.
Out Density Diff
Summary of Contents for PHASER 7500
Page 1: ...Phaser 7500 Color Printer Phaser 7500 Service Manual Xerox Internal Use Only ...
Page 2: ......
Page 60: ...1 30 Phaser 7500 Printer Service Manual General Information ...
Page 448: ...3 310 Phaser 7500 Printer Service Manual Error Messages and Codes ...
Page 484: ...4 36 Phaser 7500 Printer Service Manual General Troubleshooting ...
Page 544: ...5 60 Phaser 7500 Printer Service Manual Print Quality Troubleshooting ...
Page 545: ...6 Chapter Adjustments and Calibrations In this chapter Adjustments Calibrations ...
Page 554: ...6 10 Phaser 7500 Printer Service Manual Adjustments and Calibrations ...
Page 562: ...7 8 Phaser 7500 Printer Service Manual Cleaning and Maintenance ...
Page 900: ...9 118 Phaser 7500 Printer Service Manual Parts List ...
Page 958: ...10 58 Phaser 7500 Printer Service Manual Plug Jack and Wiring Diagrams ...
Page 980: ...11 22 Phaser 7500 Printer Service Manual Reference ...
Page 990: ...I 10 Phaser 7500 Printer Service Manual Index ...
Page 991: ......