Xerox Phaser 7100

Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-431
5. Check the voltage supply (+24VDC) to the
Duplex PWB.
Measure the voltages between the Duplex PWB
GND <=> P/J428-4 and Duplex PWB GND <=>
P/J428-5.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Replace the Duplex
Clutch (REP 14.4
Duplex In Clutch
Assembly/ Duplex
Drive Gear Assembly
Kit on page 4-254).
Go to step 6.
6. Check the voltage output (+24VDC) from the
MCU PWB.
Measure the voltages between the MCU PWB
GND <=> P/J467-4 and between MCU PWB GND
<=> P/J467-5.
Is there a voltage (approx. +24VDC) output?
Go to step 7. Go to +24VDC Power
Troubleshooting on
page 2-455.
7. Check the connection between the Duplex PWB
and MCU PWB.
Are the connectors P/J428, P/J4672, P/J4671,
and P/J467 connected securely?
Replace the
following parts in
sequence:
• Duplex Relay
Harness Assembly
•Duplex Harness
Assembly
•Main Harness
Assembly
Connect the
connectors P/J428,
P/J4672, P/J4671,
and P/J467.
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No