Error Troubleshooting
Phaser 7100 Service Manual Xerox Internal Use Only2-440
Sensor Troubleshooting
Registration Sensor
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• Registration Sensor Harness (Registration Chute
Assembly), PL 5.1.1
• Registration Sensor, PL 5.1.3
• MCU PWB, PL 12.1.15
• Paper Transport on page 7-51
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the Registration Sensor operation.
Perform DC330 Component Control on
page 2-26 [071-102] to check the operation of
the Registration Sensor.
Is the Registration 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 Registration
Sensor and MCU PWB.
Are the connectors P/J4731 and P/J473
connected securely?
Go to step 3. Connect the
connectors P/J4731
and P/J473.
3. Check the conductivity between the Registration
Sensor and MCU PWB.
Is the connection between P/J4731 <=> P/J473
conducting properly?
Go to step 4. Replace the
Registration Chute
Assembly (REP 5.1
Registration Chute
Assembly on
page 4-114).
4. Check the voltage supply (+3.3VDC) to the
Registration Sensor.
Measure the voltage between the MCU PWB
GND <=> P/J473-3.
Is there a voltage (approx. +3.3VDC) output?
Replace the
Registration Sensor
(REP 5.2 Registration
Sensor on
page 4-116).
Go to +3.3VDC Power
Troubleshooting on
page 2-458.