Image Processor Board - Xerox Phaser 4500 Service Manual

Image Processor Board

Troubleshooting Reference
Applicable Parts
Image Processor Board
DC-DC Converter
DC-DC Converter Harness
LVPS
LVPS Harness
Troubleshooting Procedure
Steps Actions and Questions
1 Check the 5 V power:
1. Disconnect J402 from the DC-DC
Converter.
2. Measure the voltage across P402-1 <=>
P402-2.
Does the voltage measure +5 VDC?
2 Check the 3.3 V power:
Measure the voltage across P402-3 <=>
P402-4.
Does the voltage measure +3.3 VDC?
3 Check the DC-DC Converter Harness:
1. Disconnect P/J402 and J130.
2. Test each cable between J402 <=> J130
for continuity.
Are all continuous?
4-38
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.
Replace the I/P
(page 8-91).
No
Go to "DC-DC
Converter" on
Go to "DC-DC
Converter" on
Board DC-DC Converter
Phaser 4500 Service Manual
page 4-5.
page 4-5.
Replace the
Harness.