Xerox Phaser 7100

Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-449
Switch Troubleshooting
Front Cover Switch (Interlock Cap Switch)
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• MCU PWB, PL 12.1.15
•Front Interlock Switch Assembly Kit, PL 12.2.4
• Top Harness Assembly, PL 12.2.24
• Main Harness Assembly, PL 12.3.1
• Transfer on page 7-54
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the Front Cover Switch operation.
Perform DC330 Component Control on
page 2-26 [041-303] to check the operation of
the Front Cover Switch.
Is the Front Cover Switch 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 Front Cover
Switch and MCU PWB.
Are the connectors P/J4682A, P/J4681A, and
P/J468 connected securely?
Go to step 3. Connect the
connectors J4682A, P/
J4681A, and P/J468.
3. Check the conductivity between the Front Cover
Switch and Relay Connector.
Is the connection between P/J4682A <=>
P/J4681A conducting properly?
Go to step 4. Replace the Top
Harness Assembly.
4. Check the conductivity between the Relay
Connector and MCU PWB.
Is the connection between P/J4681A <=> P/J468
conducting properly?
Replace the Front
Cover Switch (REP 12.9
Front Interlock Switch
Assembly on
page 4-214).
Replace the Main
Harness Assembly.