Phaser 4500/4510 Service Manual 4-31
General Troubleshooting
Left Tray Guide
4 Check the HVPS/engine logic board:
1.Disconnect P/J24 and P/J10 from the
HVPS/engine logic board.
2.Test for continuity across the following
points:
■ J24-12 <=> J10-1
■ J24-4 <=> J10-1
Are both continuous
Go to “LVPS
(Low Voltage
Power
Supply)” on
page 4-4.
Replace the
HVPS/engine
logic board
(page 8-73).
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Left tray guide
■ LVPS harness assembly
■ HVPS/engine logic board
■ LVPS
■ “150-Sheet Feeder, 550-Sheet Feeder, Main
Fan” on page 10-27
■ “Print Engine Wiring Diagrams” on page 10-19
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check the LVPS harness assembly:
1.Disconnect P/J18 from the HVPS/engine
logic board.
2.Disconnect P/J1821.
3.Test each cable between J18 <=> J1821
for continuity.
Are all continuous?
Go to step 2. Replace the
LVPS harness
assembly.
2 Check left tray guide:
Test each cable between:
■ Tray1 size switch <=> J1821
■ Tray2 size switch <=> J1821
Are all continuous?
Go to “HVPS/
Engine Logic
Board” on
page 4-32.
Replace the
left tray guide
(page 8-33).
Troubleshooting Procedure (continued)
Steps Actions and Questions Yes No
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General
Weight and Dimensions
