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