Mws (Side 2) (Micro White Spots) - Xerox Phaser 7500 Service Manual

Print-Quality Troubleshooting
IQ-25 MWS (Side 2) (Micro White Spots)
Cause
Initial Actions
5-54
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.
• Occurs on Side 2 in a low humidity environment.
• Check the paper transfer path.
• Ensure there are no debris on the transfer path.
Troubleshooting Reference
Applicable Parts
Troubleshooting Procedure
Step Actions and Questions
1 Verify that the micro white spots appear on Side 2 in a low humidity
environment.
Perform Calibrate for Paper procedure.
2
Example Print
Normal
Phaser 7500 Printer Service Manual
Abnormal
Micro White Spots