5 Replace the fuser unit.

Run test prints.

Has the problem been resolved?

No: Reinstall the original fuser unit and continue.

Yes: Turn to TAG 002: Check & Problem Resolution.

6 Replace the cleaner unit.

Run test prints.

Has the problem been resolved?

No: Reinstall the original cleaner unit and continue.

Yes: Turn to TAG 002: Check & Problem Resolution.

7 Check the following for damage:

Vacuum transport unit

Vacuum transport assembly ozone filter

Fuser unit drive gear on the fuser unit and fuser unit cavity

Fuser drive belt

Main drive assembly

Cleaner unit drive belt

Cleaner drive idler assembly

Cleaner drive assembly

Are they in good working order?

No: Repair or replace the parts as needed, then turn to TAG 002: Check & Problem Resolution .

Yes: Continue.

8 Open the printer’s top cover and install an interlock by-pass tool.

Turn the printer on.

Wait until the motor turns on, then proceed.

Verify the vacuum transport fan is running by placing a sheet of paper over the holes in the transport unit.

Does the vacuum fan hold the paper?

No: Go to #10 in this TAG.

Yes: Continue.

9 Inspect the vacuum transport belts and gear for damage or binding.

Is the vacuum transport unit in good working order?

No: Repair or replace the vacuum transport unit, then turn to TAG 002: Check & Problem Resolution.

Yes: Go to #12 in this TAG.

3-178

Troubleshooting Analysis Guide (TAGs)