Xerox Phaser 7100

Error Troubleshooting
Phaser 7100 Service Manual Xerox Internal Use Only2-450
Front Cover Interlock Switch
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• MCU PWB, PL 12.1.15
• LVPS PWB, PL 12.2.1
•Front Interlock Switch Assembly Kit, PL 12.2.4
• Top Harness Assembly, PL 12.2.24
• Power on page 7-38
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the Front Cover Interlock Switch operation.
Perform DC330 Component Control on
page 2-26 [041-300] to check the operation of
the Front Cover Interlock Switch.
Is the Front Cover Interlock 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
Interlock Switch and LVPS PWB.
Are the connectors P/J5226 and P/J522
connected securely?
Go to step 3. Connect the
connectors P/J5226
and P/J522.
3. Check the conductivity between the Front Cover
Interlock Switch and LVPS PWB.
Is the connection between P/J5226 <=> P/J522
conducting properly?
Go to step 4. Replace the Top
Harness Assembly.
4. Check the voltage supply (+5VDC) to the Front
Cover Interlock Switch.
Measure the voltage between the LVPS PWB
GND <=> P/J522-1.
Is there a voltage (approx. +5VDC) output?
Close the Interlock Switch and check.
Replace the Front
Interlock Switch (REP
12.9 Front Interlock
Switch Assembly on
page 4-214).
Replace the LVPS PWB
(REP 12.7 LVPS PWB
on page 4-211).