Fuji Xerox Phaser 5500

4-4 Phaser 5500 Printer Service Manual
Front Panel Display Error/Inoperable Buttons
The Front Panel either fails to illuminate or the buttons fail to operate after the power
switch is turned On.
Front Panel Troubleshooting Reference
Applicable Parts References
■ Front Panel
■ Front Panel Harness
■ Image Processor Board
■ LVPS
■ Image Processor Board P/J Locator (page 10-14)
■ Image Processor Board (1/2) Wiring (page 10-32)
■ PL1.1 Covers (1/2) (page 9-4)
Front Panel Troubleshooting Procedure
Step Actions and Questions Yes No
1
Check the Front Panel input DC voltages:
On the Image Processor Board measure
the voltages at the following test points.
J150-5 <=> Ground = +5 V
J150-6< => Ground = +3.8V
J150-7 <=> Ground = +5 V
J150-8 <=> Ground = +3.8V
J150-9 <=> Ground = +3.8 V
J150-10 <=> Ground = +5 V
Are the voltages within specification?
Go to Step 2. Replace the Image
Processor Board
(
page 8-91).
2
Check Continuity between the Image
Processor Board and the Front Panel.
Is there continuity on each wire
between J150 and the Front Panel
connector?
Go to Step 3. Repair or replace the
wiring.
3
Replace the Front Panel.
Is the problem resolved?
Problem
solved.
Replace the Image
Processor Board
(
page 8-91).