5 Check J/P42-1 for +5 Vdc.

Is the voltage +5 Vdc?

No: Repair or replace the connectors or wiring from P94-1 to J/P90-1 to P42-1, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

6 Turn the printer off and unplug the power cord.

•Disconnect J/P8 and J/P42.

•Check P42-20 to P8-15 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P42-20 to J/P90-20 to J/P94-2 to P8-15, then turn to TAG 002: Check & Problem Resolution.

Yes: Replace the operator panel circuit board. If this resolves the problem, turn to TAG 002: Check & Problem Resolution. If this does not resolve the problem, replace the PCL board, wire harness W72, or wire harness W63, then turn to TAG 002: Check & Problem Resolution.

7 Turn the printer off.

•Disconnect J/P330.

•Turn the printer on.

•Check J/P8-1 for +5 Vdc.

Is the voltage +5 Vdc?

No: Continue.

Yes: Go to #15 in this TAG.

8 Turn the printer off.

•Disconnect J/P8.

•Turn the printer on.

•Check J/P330-3 for +5 Vdc.

Is the voltage +5 Vdc?

No: Go to #22 in this TAG.

Yes: Continue.

9 Turn the printer off.

•Reconnect J/P8.

•Disconnect J/P77.

•Turn the printer on.

•Check J/P8-10 for +5 Vdc.

Is the voltage +5 Vdc?

No: Continue.

Yes: Replace the disk drive assembly, then turn to TAG 002: Check & Problem Resolution.

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Troubleshooting Analysis Guide (TAGs)