Xerox Phaser 7100

Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-443
Paper Jam Sensor
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• MCU PWB, PL 12.1.15
• Option Harness Assembly, PL 12.3.5
• Paper Jam Sensor, PL 15.2.3
• Option Paper Feed Jam Harness s Assembly, PL 15.2.6
•Option Feeder 1 Relay Harness Assembly, PL 15.2.30
•Option Left Feeder Harness Assembly, PL 15.2.31
• Feeder PWB, PL 15.2.33
• 550-Sheet Feeder on page 7-64
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the Paper Jam Sensor operation.
Perform DC330 Component Control on
page 2-26 to check the operation of the Paper
Jam Sensor:
• Tray 2: 071-125
• Tray 3: 071-126
• Tray 4: 071-127
Is the Paper Jam Sensor 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 Paper Jam
Sensor and Feeder PWB.
Are the connectors P/J122, P/J611, and P/J420
connected securely?
Go to step 3. Connect the
connectors P/J122,
P/J611, and P/J420.
3. Check the conductivity between the Paper Jam
Sensor and Feeder PWB.
Is the connection between P/J122 <=> P/J4611
conducting properly?
Go to step 4. Replace the Option
Paper Feed Jam
Harness Assembly.
4. Check the conductivity between the Relay
Connector and Feeder PWB.
Is the connection between P/J611 <=> P/J420
conducting properly?
Go to step 5. Replace the Option
Left Feeder Harness
Assembly.
5. Check the voltage supply (+3.3VDC) to the Paper
Jam Sensor.
Measure the voltage between the Feeder PWB
GND <=> P/J420-6.
Is there a voltage (approx. +3.3VDC) output?
Replace the Paper Jam
Sensor (REP 15.11
Paper Jam Sensor on
page 4-271).
Go to step 6.