TAG 811: Background/Residual Images/Dark Prints
June 1999 Troubleshooting Analysis Guide (TAGs) 3-183
10
Verify that the toner patch sensor board connector, mounted on the developer unit, is connected
properly.
Is it connected properly?
No: A loose connection was at fault. Turn to TAG 002: Check & Problem Resolution.
Yes: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.
11
Turn the printer off and unplug the power cord.
• Disconnect J/P41 and J/P24.
• Check P41-30 to P24-2 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from P41-30 to P24-2, then turn to TAG 002:
Check & Problem Resolution.
Yes: Continue.
12
Reconnect J/P24.
• Disconnect J/P23.
• Check P41-33 to P23-7 for continuity.
Is there continuity?
No: Continue.
Yes: Repair or replace the connectors or wiring from P41-33 to P23-7, then turn to TAG 002:
Check & Problem Resolution.
13
Reconnect J/P23.
• Disconnect J/P85 from the high voltage unit.
• Check P85-8 to J25-7 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from P85-8 to J25-7, then turn to TAG 002:
Check & Problem Resolution.
Yes: Continue.
14
Reinstall the developer unit.
• Reconnect J/P85.
• Disconnect J/P41 and J/P24.
• Check P41-40 to P24-3 for continuity.
Is there continuity?
No: Repair or replace the connector or wiring from P41-40 to P24-3, then turn to TAG 002:
Check & Problem Resolution.
Yes: Continue.
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