Epson EPL-N4000 - Vertical Streaks

EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 118
3.4.6 Vertical Streaks

Problem
There are black lines runnin
g
vertically
alon
g
the pa
g
e.

SUSPECT COMPONENTS
The followin
g
components are
associated with this specific problem.
One or more of these components may
have failed partially or completely. If
you cannot isolate the problem usin
g
this FIP, replace each component listed
below, one at a time, until the problem
disappears.
• No recommendations
Table 3-39. Vertical Streaks
Table 3-40. Vertical Streaks
Step Actions and Questions Yes No
1
PAPER PATH INSPECTION
Inspect the paper path, between feed
and exit, for contamination or
obstructions.
Is the paper path free of
contamination or obstructions?
Go to step 2 Remove
contamination
and
obstructions
from the
paper path.
2
ROS WINDOW INSPECTION
1. Remove the EP Cartrid
g
e.
2. Inspect the ROS Window for
contamination that could be blockin
g
part of the laser beam from reach the
Drum.
Is the ROS Window clean?
Go to step 3 Clean ROS
window
Step Actions and Questions Yes No
3
EP CARTRIDGE REPLACEMENT
Install a new EP Cartrid
g
e (CRU).
Are the vertical streaks gone?
Problem
solved
Go to step 4
4
IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover (RRP 1.3).
2. Generate a Grid Test Print and switch
OFF printer power halfwa
y
throu
g
h the
print c
y
cle.
3. Open the Left Upper Cover.
4. Open the Drum Shutter.
5. Hand rotate (counter clockwise) the
Main Drive Motor to advance the Drum
far enou
g
h so
y
ou can see the
developed ima
g
e area on the Drum
before
it reached Transfer.
Before Transfer was the toner image
on the drum normal and without
vertical streaks, but there are vertical
streaks on the paper after Transfer?
Go to step 5 Replace the
BTR
Assembl
y
.
5
FUSER INSPECTION
1. Generate another Grid Test Print and
switch OFF printer power when the
print is halfwa
y
throu
g
h the Fuser.
2. Open the Left Upper Cover.
3. Examine the paper areas before the
ima
g
e enters the Fuser and after the
ima
g
e exits the Fuser.
Is the image on the paper normal
before it enters the Fuser, but there
are vertical streaks visible when it
exits the Fuser?
Replace the
Fuser
Assembl
y
.
Replace the
ROS
Assembl
y
.