Xerox Phaser 7100

Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-437
Duplex Motor
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• Duplex Harness Assembly, PL 4.2.18
• MCU PWB, PL 12.1.15
• Main Harness Assembly, PL 12.3.1
• Duplex Motor, PL 14.2.1
• Duplex PWB, PL 14.3.8
• Option Duplex Sensor Harness Assembly, PL 14.3.9
• Duplex on page 7-62
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the Duplex Motor operation.
Perform DC330 Component Control on
page 2-26 [071-024] to check the operation of
the Duplex Motor.
Is the Duplex Motor operating properly?
Replace the MCU PWB
(REP 12.4 MCU PWB
on page 4-206).
Go to step 2.
2. Check the connection between the Duplex Motor
and Duplex PWB.
Is the connector P/J429 connected securely?
Go to step 3. Connect the connector
P/J429.
3. Check the voltage supply (+24VDC) to the
Duplex Motor.
Measure the voltages between the Duplex PWB
GND <=> P/J429-1 and Duplex PWB GND <=>
P/J429-2.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Replace the Duplex
Motor (REP 14.2
Duplex Motor on
page 4-250).
Go to step 4.
4. 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
PWB (REP 14.6 Duplex
PWB on page 4-257).
Go to step 5.
5. Check the voltage output (+24VDC) from the
MCU PWB.
Measure the voltages between the MCU PWB
GND <=> P/J467-4 and MCU PWB GND <=>
P/J467-5.
Is there a voltage (approx. +24VDC) output?
Go to step 6. +24VDC Power
Troubleshooting on
page 2-455