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3. Troubleshooting
Replacement Procedure:
1.
Replace duplex unit.
2.
Replace duplex cover switch.
Printer does not detect improper setting of duplex unit
Description: The duplex unit is installed improperly but the printer does not detect this condition.
Probable Cause: The signal from the duplex unit sensor did not change.
3
Location: Duplex unit, or control board
Service Center Procedure:
None
Replacement Procedure:
1.
Replace duplex unit.
2.
Replace control board.
Image Quality
Image appears dirty, smeared
Description: The printed image is smeared, scratchy, spotted.
Probable Cause: Paper dust, paper dirty
Location: Gap between print head and paper during printing (print head unit, or transport belt unit)
Service Center Procedure:
1.
Do a test print with another file.
2.
Check paper thickness.
3.
Raise top cover and check condition of transfer belt surface.
4.
Set lower ink density if doing a simplex print.
5.
If printing on thick paper or image with large coverage, set envelope selector for envelopes.
Replacement Procedure:
1.
Clean transport belt.
2.
Clean inverter roller.
3.
Replace the printer.
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