Power Supply Problems; Power Supply Troubleshooting - Xerox Phaser 6121MFP Service Manual

General Troubleshooting

Power Supply Problems

Power Supply Troubleshooting

4-26
Troubleshooting Reference Table
Applicable Parts
LVPS, PL10.6.16
Engine Control Board, PL13.0.20
Troubleshooting Procedure Table
Actions and Questions
Step
1 Check the voltage at the AC wall outlet.
Is there approximately 110 VAC (or 220
VAC if the printer is a 220 V
configuration) at the AC wall outlet?
2 Is the Fuse on the Power Supply open?
3 On the Power Supply, check that
connectors CN5, CN6, and CN7 are
properly seated.
Are the connectors properly seated?
4 Check voltages at P/J2 on the Engine
Control Board: 24 V (pins 1, 5, and 7), and
5 V (pin 2).
Are all of the voltages present?
Wiring and Plug/Jack Map References
Engine Control Board Wiring
(page 10-14)
Yes
Go to step 2. Notify the
Replace the
Power
Supply
(page 8-72).
Go to step 4. Reseat the
Replace the
Engine
Control
Board.
Phaser 6121MFP Service Manual
No
customer of
improper AC
output from
the outlet.
Go to step 3.
connectors.
If the
problem
persists, go
to step 4.
Replace the
Power
Supply
(page 8-72).