Epson EPL-N4000 - Vertical Band Deletions

EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 116
3.4.4 Vertical Band Deletions

Problem
There are areas of the ima
g
e that are
extremely li
g
ht or missin
g
entirely. These
missin
g
areas form wide bands that run
vertically alon
g
the pa
g
e, in the direction
of paper travel.

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 3-35. Vertical Band Deletions
Table 3-36. Vertical Band Deletions
Step Actions and Questions Yes No
1
ROS WINDOW INSPECTION
1. Remove the EP Cartrid
g
e.
2. Inspect the ROS Window for a scrap
of paper or other contamination that
ma
y
have lod
g
ed in front of it and
could be blockin
g
part of the laser
beam from reach the Drum.
Is the ROS Window free of paper or
other contamination?
Go to step 2 Remove the
paper scrap
or clean the
ROS window.
2
PAPER INSPECTION
Is the paper wrinkled or dimpled?
Load fresh,
dr
y
paper.
Go to step 3
Step Actions and Questions Yes No
3
EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge (CRU).
Are the vertical band deletions gone?
Problem
solved
Go to step 4
4
IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover.
2. Generate a Solid Black 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 band deletions?
Go to step 5 Replace the
BTR
Assembl
y
.
5
FUSER INSPECTION
1. Generate another Solid Black 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 band deletions visible
when it exits the Fuser?
Replace the
Fuser
Assembl
y
.
Go to
Suspect
Components.