Epson EPL-N1200 Service Manual page 124

Troubleshooting
Table 5-29. Print Quality Anomaly (Continued)
Symptom Possible Cause
White/black lines
and bands
Improper fusing
ABCDE
Defective optical
unit
ABCDE
ABCDE
Poor image
transfer
ABCDE
Areas of missing
print
Poor image
transfer
ABCDE
ABCDE
Poor
ABCDE
development
ABCDE
Poor
development
Paper problem
Toner smudges on
back side of pages
Smears on paper
path.
Print offset
Improper fusing
Dirty drum
5-12
Parts Name Check Item
Fusing roller —
Thermistor —
Optical unit —
Check the
Image transfer
surface of image
roller
transfer roller.
Check the
Image transfer surface of the
roller image transfer
roller.
HV1 board —
—
Imaging
cartridge
—
HV1 board —
Check to see if
Paper
paper is moist.
Check the
Image transfer
surface of image
roller
transfer roller.
Fusing roller —
Other paper Check the paper
paths path.
Check if there is
any dust or
Fusing roller damage on the
fusing roller
surface.
Imaging
—
Cartridge
EPL-N1200 Service Manual
Remedy
Clean the fusing
roller.
Replace the
thermistor.
Replace the optical
unit.
Replace the image
transfer roller.
Replace the image
transfer roller.
Replace the HV1
board.
Shake the imaging
cartridge.
Replace the imaging
cartridge.
Replace the HV1
board.
Replace the paper.
Clean the image
transfer roller.
Clean the fusing roller.
Clean the paper path.
Clean or replace
fusing roller.
Replace the imaging
cartridge.
Rev. A