6 Power-on-reset the printer.

•Watch through the output tray opening to see if the fuser lamp comes on.

Does the lamp light within 1.5 minutes?

No: Go to TAG 070: Fuser Unit Malfunction.

Yes: Continue.

7 Run test prints.

Does the print seem to be excessively dark or do the characters feel raised on the paper?

No: Continue.

Yes: Go to TAG 808: Prints Overtoned/Dark Vertical Streaks.

8 Confirm that the paper in the cassettes meets paper specifications, outlined in the Guide to Operations manual.

Is the paper within specification?

No: Do not use this paper. Turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

9 Turn the printer off and unplug the power cord.

•Remove the fuser unit.

•Disconnect J/P41.

•Check P41-22 to P5-6 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P41-22 to P83-1, or J83-1 to P5-6, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

10 Check P41-21 to P5-7 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P41-21 to P83-2, or J83-2 to P5-7, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

11 Reinstall the fuser unit.

•Check P41-21 to P41-22 for resistance.

Is the resistance between I KΩ and 400 KΩ?

No: Replace the fuser unit. If this resolves the problem, turn to TAG 002: Check & Problem Resolution. If this does not resolve the problem, replace the PCL board, then turn to TAG 002: Check & Problem Resolution.

Yes: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.

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Troubleshooting Analysis Guide (TAGs)