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EPSON EPL-N4000
Chapter 3
Troubleshooting
3.4.5 Horizontal Band Deletions
†Problem
There are areas of the image that are
extremely light or missing entirely. These
missing areas form wide bands that run
horizontally across the page, parallel
with the direction of paper travel.
Table 3-38. Horizontal Band Deletions
Step
3
• CRU Connector and Contact Springs.
• MCU PWB.
• Fuser Assembly
Step
1
Actions and Questions
PAPER INSPECTION
Is the paper wrinkled or dimpled?
2
EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge.
Are the horizontal band deletions
gone?
Rev. A
Yes
4
No
Replace
with fresh,
dry paper
Go to step 2
Problem
solved
Go to step 3
IMAGE TRANSFER INSPECTION
Yes
HVPS CHECK
Generate a Solid Black Test Print.
Is the Test Print normal, with no
horizontal band deletions?
No
Go to step 4
Replace the
BTR
Assembly,
then go to
step 4
Problem
solved
Replace the
HVPS
Assembly.
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
horizontal band deletions, but there
are deletions on the paper after
Transfer?
†SUSPECT COMPONENTS
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.
Table 3-37. Horizontal Band Deletions
Actions and Questions
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