Front Panel Troubleshooting; Lcd/Led Display Error/Inoperable Buttons - Xerox Phaser 4500 Service Manual

Front Panel Troubleshooting

LCD/LED Display Error/Inoperable Buttons

Troubleshooting Reference
Applicable Parts
Front Panel
Front Panel Harness
HVPS/Engine Logic Board
LVPS
Troubleshooting Procedure
Steps Actions and Questions
1 Check the 5 V power:
1. Disconnect P110 from the Image
Processor Board.
2. Measure the voltage across P110-10
<=> P110-3, and P110-9 <=> P110-3.
Does the voltage measure +5 VDC?
2
1. Disconnect the Front Panel harness
from J810 on the Front Panel PWBA.
2. Test each conductor in the harness for
continuity.
Does each conductor exhibit
continuity?
3 Replace the Front Panel.
Is the problem resolved?
General Troubleshooting
Wiring and Plug/Jack Map References
"Image Processor Board, DC-DC Converter, Front
Panel" on page 10-26
"Print Engine General Wiring Diagram" on
page 10-17
"Print Engine Plug/Jack Locator" on page 10-3
Yes
Go to step 2.
Go to step 3.
Problem solved.
No
Go to "Image
Processor Board"
on page 4-38.
Replace the Front
Panel Harness.
Replace the I/P
Board.
(page 8-91)
4-3