Epson EPL-N4000, Service Manual

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EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 121
3.4.8 Spot Deletions
Problem
There are areas of the image that
are extremely light or missing
entirely. These missing areas form
spots that are localized to small
areas of the page.
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.
• No recommendations
Table 3-44. Spot Deletions
Table 3-45. Spot Deletions
Step Actions and Questions Yes No
1
PAPER INSPECTION
Is the paper wrinkled or dimpled?
Replace
with fresh,
dry paper Go to step 2
2 EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge.
Are the spot deletions gone?
Problem
solved Go to step 3
Step Actions and Questions Yes No
3 IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover.
2. Generate a 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 spot
deletions, but there are spot deletions
on the paper after Transfer?
Replace the
BTR
Assembly. Go to step 4
4
FUSER INSPECTION
1. Generate another 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 spot deletions visible when it exits
the Fuser?
Replace the
Fuser
Assembly. Replace the
paper with
fresh, dry
paper.
If problem
continues,
thoroughly
clean the
inside of the
printer.