Epson EPL-N1200 Service Manual page 123

EPL-N1200 Service Manual
Table 5-29. Print Quality Anomaly (Continued)
Symptom Possible Cause
Blank print
Poor
development
Improper
charging
Poor image
transfer
Improper print
density setting.
Defective optical
unit
Black print
Improper
charging
Poor
development
Improper setting
of the print
density.
Defective optical
unit
Improper
White/black lines
charging
and bands
Poor
development
ABCDE
ABCDE
Improper drum
cleaning
ABCDE
Dirt on the
ABCDE
optical unit lens.
Dirt on the fusing
roller
Rev. A
Part Name Check Item
Check whether the
Imaging
imaging cartridge is
cartridge
installed properly.
HV1 board —
HV1 board —
Check the surface of
Image transfer
the image transfer
roller
roller.
HV1 board —
— —
Optical unit —
Imaging
—
cartridge
HV1 board —
Imaging
—
cartridge
HV1 board —
— —
Optical unit —
Imaging
—
cartridge
HV1 board —
Imaging
—
cartridge
Imaging
—
cartridge
Optical unit —
Fusing roller —
Troubleshooting
Remedy
Reinstall the imaging
cartridge.
Replace the HV1
board.
Replace the HV1
board.
Replace the image
transfer roller.
Replace the HV1
board.
Adjust the print
density in SelecType.
Replace the optical
unit.
Replace the imaging
cartridge.
Replace the HV1
board.
Replace the imaging
cartridge.
Replace the HV1
board.
Adjust the print
density by SelecType.
Replace the optical
unit.
Shake the imaging
cartridge.
Replace the imaging
cartridge.
Replace the HV1
board.
Replace the imaging
cartridge.
Replace the imaging
cartridge.
Clean the optical unit
lens.
Clean the fusing roller.
5-11