Phaser 7500 Printer Service Manual
5-37
Print-Quality Troubleshooting
IQ-11 SLED Transfer Failure
Stripes and blank areas (stripes) in an individual color appear repeatedly in sizes of
2.7 mm. They appear by half chip units.
Cause
•
+ 5 vdc failure. LED Chip failure.
Initial Actions
•
Check the paper transfer path.
•
Ensure there are no debris on the transfer path.
Troubleshooting Reference
Applicable Parts
Example Print
■
LED Print Head, PL2.1.2
■
LVPS, PL18.1.7
■
Motor Drive PWB, PL18.3.7
Troubleshooting Procedure
Step
Actions and Questions
Yes
No
1
Check the power source.
Is 5V output from the Motor Drive
PWB?
■
Pin 518 A4 for Yellow
■
Pin 518 A8 for Magenta
■
Pin 518 B5 for Cyan
■
Pin 518 B1 for Black
Go to step 2.
Go to step 3.
2
Check the continuity of the cable
between the Motor Drive MCU and
LED Print Head of the effected color.
Is the continuity between the Motor
Drive PWB and the LED Print Head
normal?
Replace the
LED Print Head
(REP 2.1,
Replace the
cable.
SLED Transfer Failure
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: ......