Xerox PHASER 7500 - IQ-6 Video Data; Crosstalk

Phaser 7500 Printer Service Manual 5-31
Print-Quality Troubleshooting
IQ-6 Video Data/ Crosstalk
An image with different color overlaps another shown below as faint magenta
image overlapping yellow.
Cause
• Poor connection of Flat Cable between the MCU and the LED Print Head.
Initial Actions
• Check the paper transfer path.
• Ensure there are no debris on the transfer path.
Note
If this problem does not occur in Engine Test Prints. Therefore, do not replace
the LPH without consideration.
Troubleshooting Reference
Applicable Parts Example Print
■ LED Print Head, PL2.1.2
■ LPH 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 on the Engine Test Prints from
within Diagnostics.
Does the error still occur?
Replace the
LED Print Head
(REP 2.1,
page 8-18).
Go to step 2.
Check
connection of
Cables and
check the LPH
Cable for
scratches and
damages.
Go to step 2.
2 Does the error still occur? Replace the
MCU PWB
(REP 18.12,
page 8-202).
Replace the
LPH Cable.
Video Data Crosstalk