Error Troubleshooting
Phaser 7100 Service Manual Xerox Internal Use Only2-82
4. Check the conductivity between the Fuser Motor
and Relay Connector.
Are the connections between P/J4755 <=>
P/J4751 and between P/J242 <=> P/J2711
conducting properly?
Go to step 5. Replace the Front
Harness Assembly.
5. Check the conductivity between the Relay
Connector and LVPS PWB.
Is the connection between P/J2711 <=> P/J524
conducting properly?
Go to step 6. Replace the Main
Harness Assembly.
6. Check the conductivity between the Relay
Connector and MCU PWB.
Is the connection between P/J4751 <=> P/J475
conducting properly?
Go to step 7. Replace the Main
Harness Assembly.
7. Check the voltage supply (+3.3VDC) to the Fuser
Motor.
Measure the voltage between the MCU PWB
GND <=> P/J475-16.
Is there a voltage (approx. +3.3VDC) output?
Go to step 8. Go to +3.3VDC Power
Troubleshooting on
page 2-458.
8. Check the voltage supply (+24VDC) to the Fuser
Motor.
Measure the voltage between the LVPS PWB
GND <=> P/J524-1.
Is there a voltage (approx. +24VDC) output?
Close the Interlock Switch and check.
Replace the Fuser
Drive Assembly (REP
4.7 Fuser Drive
Assembly on
page 4-99).
Replace the LVPS PWB
(REP 12.7 LVPS PWB
on page 4-211).
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No