4-30 Phaser 4500 Service Manual
Exit Motor PWBA
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Exit Motor PWBA
■ LVPS Harness Assembly
■ LVPS
■ HVPS/Engine Logic Board
■ “24 V Interlock, Rear Cover Switch, Main Motor, Sub
Fan, Exit Motor Assembly” on page 10-18
■ “Print Engine General Wiring Diagram” on
page 10-17
■ “Print Engine Plug/Jack Locator” on page 10-3
Troubleshooting Procedure
Steps Actions and Questions Yes No
1
Check the LVPS Harness Assembly:
1. Disconnect P/J27, P/J10, P/J102 and P/
J101 from the LVPS Harness Assembly.
2. Test for continuity across the following
points:
■ J27 <=> J102
■ J10-8 <=> J101-2
Are both continuous?
Go to step 2. Replace the
LVPS Harness
Assembly.
2
Check the Exit Motor PWBA power source
voltage:
1. Disconnect P/J101 from the Exit Motor
PWBA.
2. Measure the voltage across J101-2 <=>
J101-1.
Is the voltage +24 VDC?
Go to step 3. Replace the
LVPS
(page 8-78).
3
Replace the Exit Motor PWBA (page 8-76).
Is the problem cleared, after
replacement?
Problem solved. Replace the
HVPS/Engine
Logic Board
(page 8-89).
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