5-28
Phaser 7500 Printer Service Manual
Print-Quality Troubleshooting
IQ-4 SLED Transfer Cycle Stripes
Cyclical matte stripes or black stripes appear in the process direction. The pitch
changes depending on the process speed.
Cause
•
Poor connection of Flat Cable between the MCU and the LPH.
Initial Actions
•
Check the paper transfer path.
•
Ensure there are no debris on the transfer path.
Note
Do not replace the LED Print Head without consideration.
Troubleshooting Reference
Applicable Parts
Example Print
■
LED Print Head, PL2.1.2
■
FFC Cable, PL2.2.1
■
MCU PWB, PL18.3.6
Troubleshooting Procedure
Step
Actions and Questions
Yes
No
1
Verify that the problem does not
occur in Step Pattern prints.
Does error occur?
Replace the
LED Print Head
(REP 2.1,
Go to step 2.
Check for
connection
mistake and
scratches/
damages on
the FFC Cable.
Go to step 2.
2
Does the error still occur?
Replace the
MCU PWB
(REP 18.12,
Replace the
FFC Cable.
SLED Transfer Cycle Stripes
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: ......