Xerox Phaser 7100

Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-429
5. Check the voltage supply (+24VDC) to the Turn
Roller Clutch.
Measure the voltage between the Feeder PWB
GND <=> P/J420-1.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Replace the Turn Roller
Clutch (REP 15.18 Turn
Roller Clutch on
page 4-280).
Go to step 6.
6. Check the voltage supply (+24VDC) to the Feeder
PWB.
Measure the voltages between the Feeder PWB
GND <=> P/J419-6 and Feeder PWB GND <=>
P/J419-7.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Replace the Feeder
PWB (REP 15.22
Feeder PWB on
page 4-285)
Go to step 7.
7. Check the voltage output (+24VDC) from the
MCU PWB.
Measure the voltages between the MCU PWB
GND <=> P/J461-4 and MCU PWB GND <=>
P/J461-5.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Go to step 8. Go to +24VDC Power
Troubleshooting on
page 2-455.
8. Check the connection between the Feeder PWB
and MCU PWB.
Are the connectors P/J419, P/J4611, and P/J461
connected securely?
Replace the
following parts in
sequence:
• Option Harness
Assembly
•Option Feeder 1
Relay Harness
Assembly
Connect the
connectors P/J419,
P/J4611, and P/J461.
Troubleshooting Procedure
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