J007/J010/J011 36 Repair Center Manual
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.
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.
Color offset
Description: Offset is characterized by improper overlays of color on lines and text.
Outlines of different colors appear around text and lines.
Probable Cause: Gap between transport belt and print head (with the paper in between) is
not correct.
Location: Print head unit, transport belt unit
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