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Troubleshooting Analysis Guide (TAGs) 3-25
5
Install the lower cassette.
Is a value other than 1-0 displayed?
No: Continue.
Yes: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.
6
Turn the printer off and unplug the power cord.
• Remove the lower cassette.
• Loosen the lower paper size sensor assembly for access to the circuit board.
• Disconnect J/P48.
• Activate the cassette in switch.
• Check P48-1 to P48-2 for continuity.
Is there continuity?
No: Replace the lower cassette in switch or wire harness W59, then turn to TAG 002: Check
& Problem Resolution.
Yes: Continue.
7
Reconnect J/P48.
• Disconnect J/P43 and J/P40.
• Check P40-50 to P43-10 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from P43-10 to J52-1 or P40-50 to P52-1.
Then turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
8
Check P43-8 to P40-48 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from P43-8 to J52-3 or P40-48 to P52-3. Then
turn to TAG 002: Check & Problem Resolution.
Yes: Replace the lower paper size sensor assembly. If this does not resolve the problem,
replace the PCL board. Then turn to TAG 002: Check & Problem Resolution.