Epson EPL-N4000 - Black Prints

EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 114
3.4.3 Black Prints

Problem
The entire print is black.
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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.
•LVPS Assembly
Table 3-32. Black Prints
Table 3-33. Black Prints
Step Actions and Questions Yes No
1
ROS WINDOW INSPECTION
1. Remove the EP Cartrid
g
e.
2. Inspect the ROS Window for a sheet
of paper that ma
y
have lod
g
ed in
front of it and could be blockin
g
the
laser beam from reachin
g
the Drum.
Is the ROS Window free of paper?
Go to step 2 Remove the
paper
2
CONTROLLER OR HOST SOFT-
WARE ISOLATION
Generate a Grid Test Print.
Is the test print image normal?
Replace the
ESS PWB
or reload
the Host
Software
Go to step 3
Step Actions and Questions Yes No
3
EP CARTRIDGE REPLACEMENT
Install a new EP Cartrid
g
e
Is there a normal image on the paper?
Problem
solved
Go to step 4
4
IMAGE DEVELOPMENT INSPEC-
TION
1. Remove the Rear Cover
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.
Is the image on the drum completely
developed; with sharp, black, easily
read areas and clear, white areas?
Replace the
BTR
Assembl
y
.
Go to step 5
5
MAIN
CONTROLLER(C262MAIN)
BOARD REPLACEMET
1. Replace the Main Controller
Board(C262 Main).
2. Generate a Grid Test Print.
Is the printed Test Pattern normal?
Problem
solved
Go to step 6