Phaser 4500/4510 Service Manual 4-3
General Troubleshooting
Control Panel Troubleshooting
LCD/LED Display Error/Inoperable Buttons
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Control panel
■ Control panel harness
■ Image processor board
■ LVPS
■ “Image Processor Board, DC-DC Converter
(P4500), Control Panel” on page 10-31
■ “Print Engine Wiring Diagrams” on page 10-19
■ “Print Engine Plug/Jack Locator” on page 10-3
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check the 3.3 V power (P4510) or 5 V
power (P4500):
1.Disconnect P110 from the image
processor board.
2.Measure the voltage across P110-10 <=>
P110-3, and P110-9 <=> P110-3.
Is the voltage measurement correct?
Go to step 2. Go to “Image
Processor
Board” on
page 4-34.
2 1. Disconnect the control panel harness
from J810 on the control panel PWBA.
2.Test each conductor in the harness for
continuity.
Does each conductor exhibit continuity?
Go to step 3. Replace the
control panel
harness.
3 Replace the control panel.
Is the problem resolved?
Problem
solved.
Replace the
I/P Board.
(page 8-75)