Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-303
Cover Open: Toner Cover Open
Toner Cover Interlock Open.
Applicable Fault Code
• 093-301: Toner Cover Interlock Open
Initial Actions
• Power cycle the printer.
• If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• Toner Cover Interlock Switch Assembly, PL 8.1.99
• MCU PWB, PL 12.1.15
• LVPS PWB, PL 12.2.1
• Top Harness Assembly, PL 12.2.24
• Power on page 7-38
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the Toner Cover Interlock Switch
operation.
Perform DC330 Component Control on
page 2-26 [041-302] to check the operation of
the Toner Cover Interlock Switch.
Is it working properly?
Replace the MCU PWB
(REP 12.4 MCU PWB
on page 4-206).
Go to step 2.
2. Check the connection between the Toner Cover
Interlock Switch and LVPS PWB.
Are the connectors P/J5291 and P/J529
connected securely?
Go to step 3. Connect the
connectors P/J5291
and P/J529.
3. Check the conductivity between the Toner Cover
Interlock Switch and LVPS PWB.
Is the connection between P/J5291 <=> P/J529
conducting properly?
Go to step 4. Replace the Top
Harness Assembly.
4. Check the voltage supply (+5VDC) to the Toner
Cover Interlock Switch.
Measure the voltage between the LVPS PWB
GND <=> P/J529-1.
Is there a voltage (approx. +5VDC) output?
Close the Interlock Switch and check.
Replace the Toner
Cover Interlock Switch
(REP 8.8 Toner Cover
Switch Kit on
page 4-158).
Replace the LVPS PWB
(REP 12.7 LVPS PWB
on page 4-211).
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