EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Picture Image Trouble 148
Confidential
3.5.5 White or Light Bands (parallel with paper
transport)
Description of the problem:
There are light or completely white bands in
the printed image. These bands are running
parallel with paper-feed direction over a wide
area.
Parts below can be the source of this error:
• Imaging Cartridge
• BTR ASSY (p.254)
• 150 FEEDER ASSY (p.211)
• ROS ASSY (p.239)
• BOARD ASSY., MAIN (p.299)
• FUSER ASSY (p.253)
•Heat Roll
• Pressure Roll
• 550 FEEDER ASSY (p.224)
Step Action and Question Yes No
1
Paper condition
1. Set new dry recommended paper.
2. Print the image in question again.
♦Does the problem still occur?
Go to Step 2
Problem
solved
2
Paper path
1. Check to see if there are dirt or obstacles in the path
of the paper from the paper supply opening to the
paper eject opening.
♦Is the path of paper free from obstacles?
Go to Step 3
Remove
obstacle or
dirt from the
path of paper.
3
Path of laser beam
1. Inspect the path of laser beam from the ROS ASSY
to the Drum.
♦Is the path of laser beam free from obstacles?
Check the window of the ROS ASSY to see if it is
clean.
Go to Step 4
Remove all
the obstacles
from the path
of laser beam
or clean the
window of the
ROS ASSY.
4
Imaging Cartridge
1. Install a new Imaging Cartridge.
2. Print the image in question again.
♦Does the problem still occur?
Go to Step 5
Problem
solved
5
BTR ASSY
1. Remove the BTR ASSY. (p.254)
2. Check the BTR Assy for dirt or wear.
♦Is the BTR free from dirt and damage and wear?
Go to Step 6
Replace the
BTR ASSY
6
Heat Roll and Pressure Roll
1. Remove the FUSER ASSY. (p.253)
WARNING!: Wait until the Fuser cools, and
then start work.
2. Turn the Gear HR by hand, and inspect the Heat
Roll and the Pressure Roll.
♦Are the Heat Roll and the Pressure Roll free from
scratches, dirt and damage?
See 3.4.16
HVPS/MCU
(p.126)
or “Parts
below can be
the source of
this error”
Replace the
FUSER ASSY
Step Action and Question Yes No
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