Epson EPL-N4000, Service Manual

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EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 122
3.4.9 Spots
Problem
There are spots of toner randomly
scattered across 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 3-46. Spots
Table 3-47. Spots
Step Actions and Questions Yes No
1 EP CARTRIDGE INSPECTION
1. Remove the EP Cartridge.
2. Inspect the outside of the Cartridge.
3. Open the Shutter and inspect the
Drum.
Is the EP Cartridge dirty and is it
leaking toner?
Replace the
EP
Cartridge Go to step 2
Step Actions and Questions Yes No
2 INTERIOR INSPECTION AND
CLEANING
1. With the EP Cartridge removed,
inspect the interior of the printer for
toner contamination.
2. Vacuum or wipe all interior surfaces,
including Feed Rolls.
3. Generate 30 Blank Test Prints to
clean out the printer.
4. Examine the last print out.
Are the spots gone?
Problem
solved Go to step 3
3
IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover.
2. Generate a Blank 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 paper clean before Transfer,
but there are spots on the paper
after Transfer?
Replace the
BTR
Assembly. Go to step 4