Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-85
6. Check the voltage supply (+5VDC) to the Fuser
Unit.
Measure the voltages between the MCU PWB
GND <=> P/J459-5 and MCU PWB GND <=>
P/J459-13.
Is there a voltage (approx. +5VDC) output?
Go to step 7. Go to +5VDC Power
Troubleshooting on
page 2-457.
7. Check the voltage supply (+3.3VDC) to the Fuser
Unit.
Measure the voltage between the MCU PWB
GND <=> P/J459-1.
Is there a voltage (approx. +3.3VDC) output?
Go to step 8. Go to +3.3VDC Power
Troubleshooting on
page 2-458.
8. Replace the Fuser Unit (REP 10.1 Fuser Unit on
page 4-183).
Does the error persist?
Go to step 9. Troubleshooting
complete.
9. Replace the AC PWB (REP 12.5 AC PWB on
page 4-208).
Does the error persist?
Replace the MCU PWB
(REP 12.4 MCU PWB
on page 4-206).
Troubleshooting
complete.
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No