Vertical Band Deletions - Epson EPL-N4000 Service Manual

EPSON EPL-N4000/EPL-N4000+

3.4.4 Vertical Band Deletions

There are areas of the image that are
extremely light or missing entirely. These
missing areas form wide bands that run
vertically along the page, in the direction
of paper travel.


The following 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 using this FIP, replace
each component listed below, one at a
time, until the problem disappears.
• No recommendations
Table 3-35. Vertical Band Deletions
Step Actions and Questions
1 ROS WINDOW INSPECTION
1. Remove the EP Cartridge.
2. Inspect the ROS Window for a scrap
of paper or other contamination that
may have lodged in front of it and
could be blocking part of the laser
beam from reach the Drum.
Is the ROS Window free of paper or
other contamination?
PAPER INSPECTION
2
Is the paper wrinkled or dimpled?
Rev.B
Problem
SUSPECT COMPONENTS
Yes
Go to step 2 Remove the
paper scrap
or clean the
ROS window.
Load fresh, Go to step 3
dry paper.
Step Actions and Questions
3 EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge (CRU).
Are the vertical band deletions gone?
4 IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover.
2. Generate a Solid Black Test Print and
switch OFF printer power halfway
through the print cycle.
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 enough so you can see the
developed image area on the Drum
before it reached Transfer.
Before Transfer was the toner image
on the drum normal and without
vertical band deletions?
No
FUSER INSPECTION
5
1. Generate another Solid Black Test
Print and switch OFF printer power
when the print is halfway through the
Fuser.
2. Open the Left Upper Cover.
3. Examine the paper areas before the
image enters the Fuser and after the
image 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?
Chapter 3
Table 3-36. Vertical Band Deletions
Problem
solved
Go to step 5
Replace the
Fuser
Assembly.
Troubleshooting
Yes No
Go to step 4
Replace the
BTR
Assembly.
Go to
Suspect
Components.
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