Fuser Assembly - Xerox Phaser 4500 Service Manual

Fuser Assembly

Troubleshooting Reference
Applicable Parts
Fuser Assembly
HVPS/Engine Logic Board
24 V Interlock
Fuser Assembly Harness 110V/
220V
AC Power Harness Assembly
LVPS
LVPS Harness Assembly
Troubleshooting Procedure
Steps Actions and Questions
1 Check the Heater circuit for continuity
1. Remove the LVPS Shield Plate
(page 8-75).
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?
2 Check the Fuser Assembly Harness for
continuity:
Warning:
cool before removing.
1. Remove the Fuser Assembly
(page 4-16).
2. Measure the following for continuity:
J4647B-3 <=> J47-1
J4647B-2 <=> J47-3
J4647B-1 <=> J47-5
Do the conductors exhibit continuity?
3
Check the Fuser power source voltage:
1. Disconnect P/J48 from the LVPS.
2. Remove the Print Cartridge.
3. Turn the power ON.
4. Measure the voltage across P/J48-1 <=>
P/J48-3
Does it measure at line voltage?
4-16
Wiring and Plug/Jack Map References
Fan, Exit Motor Assembly" on page 10-18
page 10-17
Allow the Fuser Assembly to
"Fuser Assembly, Power Switch" on page 10-20
"24 V Interlock, Rear Cover Switch, Main Motor, Sub
"Print Engine General Wiring Diagram" on
"Print Engine Plug/Jack Locator" on page 10-3
Yes
Go to step 3.
Replace the Fuser
Assembly
(page 8-54).
Go to step 5.
Phaser 4500 Service Manual
No
Go to step 2.
Replace the
Fuser Assembly
Harness
(page 8-54).
Go to step 4.