Xerox Phaser 4510 - Page 169

Phaser 4500/4510 Service Manual 4-15
General Troubleshooting
Fuser Assembly
13 Replace the HVPS/engine logic board
(page 8-73).
Does the problem still occur after
replacement?
Go to step 14. Problem
solved.
14 Replace the laser unit assembly (page 8-38
Does the problem still occur after
replacement?
Go to
Electrical
Noise.
Problem
solved.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Fuser assembly
■ HVPS/engine logic board
■ 24 V Interlock
■ Fuser assembly harness 110V/
220V
■ AC power harness assembly
■ LVPS
■ LVPS harness assembly
■ “Fuser Assembly, Power Switch” on page 10-25
■ “P4500: 24 V Interlock, Rear Cover Switch,
Main Motor, Sub Fan, Exit Motor Assembly” on
page 10-21
■ “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 Heater circuit for continuity
1.Remove the LVPS Shield Plate
(page 8-60).
2.Disconnect P/J47 from the LVPS.
3.Measure the following for continuity:
■ J47-1 <=> J47-5
■ J47-1 <=> J47-3
Do the conductors exhibit continuity?
Go to step 3. Go to step 2.
2 Check the fuser assembly harness for
continuity:
Warning: Allow the fuser assembly to cool
before removing.
1.Remove the fuser assembly (page 4-15).
2.Measure the following for continuity:
■ J4647B-3 <=> J47-1
■ J4647B-2 <=> J47-3
■ J4647B-1 <=> J47-5
Do the conductors exhibit continuity?
Replace the
fuser
assembly
(page 8-44).
Replace the
fuser
assembly
harness
(page 8-44).
Troubleshooting Procedure (continued)
Steps Actions and Questions Yes No