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Phaser 7500 Printer Service Manual
Print-Quality Troubleshooting
IQ-25 MWS (Side 2) (Micro White Spots)
When the resistance in the Secondary Transfer section is high, e.g. in the early
mornings (low humidity environment), the transfer latitude between multi color
and mono color is narrow and the setting voltage favors multi color. In other
words, the voltage is a little high for mono color, and this causes the Transfer NIP
discharge phenomenon that creates the white spots.
Cause
•
Occurs on Side 2 in a low humidity environment.
Initial Actions
•
Check the paper transfer path.
•
Ensure there are no debris on the transfer path.
Troubleshooting Reference
Applicable Parts
Example Print
Troubleshooting Procedure
Step
Actions and Questions
1
Verify that the micro white spots appear on Side 2 in a low humidity
environment.
2
Perform
Calibrate for Paper
procedure.
Normal
Abnormal
Micro White Spots
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: ......