Ac Power Supply Troubleshooting; No Ac Power - Xerox Phaser 4500 Service Manual

AC Power Supply Troubleshooting

No AC Power

Phaser 4500/4510 Service Manual
Troubleshooting Reference
Applicable Parts
Power cord
LVPS
HVPS/Engine logic board
Control panel
Control panel harness
24 V interlock
5 V interlock
Rear cover switch
Main fan
Sub fan
Laser unit assembly
Fuser assembly
Gear assembly housing
Main motor
Registration clutch
Image processor board
550-sheet feeder PWBA
Duplex unit PWBA
Feed clutch assembly
Turn roller clutch
Troubleshooting Procedure
Steps Actions and Questions
Check the power cord for continuity.
1
Is each conductor of the power cord
continuous?
2 Check the AC power.
Does the voltage of the AC power source
meet requirements?
1. Remove the LVPS Shield Plate
3
(page 8-60)
2. Check the fuse on the LVPS.
Is the fuse blown?
General Troubleshooting
Wiring and Plug/Jack Map References
"Print Engine Wiring Diagrams" on page 10-19
"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
"Image Processor Board, DC-DC Converter
(P4500), Control Panel" on page 10-31
"150-Sheet Feeder, 550-Sheet Feeder, Main
Fan" on page 10-27
"Laser Unit, 5 V Interlock, Interlock Switch
Assembly" on page 10-29
"550-Sheet Feeder Signal Diagram" on
page 10-33
"Duplex Unit Signal Diagram" on page 10-35
"Print Engine Plug/Jack Locator" on page 10-3
"Duplex Unit Plug/Jack Locator" on page 10-14
Yes
Go to step 2.
Go to step 3.
Replace the
LVPS
(page 8-62).
No
Replace the
power cord.
Ask the
customer to
repair the AC
power
source.
Go to step 4.
4-7