Front Panel Display Error/Inoperable Buttons - Fuji Xerox Phaser 5500 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
Front Panel
Front Panel Harness
Image Processor Board
LVPS
Front Panel Troubleshooting Procedure
Step Actions and Questions
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?
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?
3 Replace the Front Panel.
Is the problem resolved?
4-4
References
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)
Phaser 5500 Printer Service Manual
Yes No
Go to Step 2. Replace the Image
Processor Board
(page 8-91).
Go to Step 3. Repair or replace the
wiring.
Problem Replace the Image
solved. Processor Board
(page 8-91).