White Spots - Epson EPL-N2050 Service Manual

EPSON EPL-N2050

3.4.9 White Spots

Problem
There are areas of the image
that are extremely light or
missing entirely. These missing
areas form spots that are
localized to small area of the
page.
Troubleshooting
Initial Analysis
1. Inspect the following components. Are they
compatible with your printer version,
correctly installed, not damaged, deformed
or contaminated?
• CRU
• Fuser Assy
• Heat Roll
• BTR Assy
• Pressure Roll Assy
2. Inspect the printer paper path. Is it clear of
foreign matter such as staples, paper clips,
and paper scrap?
Troubleshooting by Print Image Quality
Table 3-18. White Spots
Step Action and Question
PAPER CONDITIONS
1 Is there moisture in the paper?
Is the paper wrinkled?
BTR Assy
Inspect the BTR Assy for
2
contamination.
Is the BTR free of contamination?
CRU FAILURE
3 Replace the CRU with a new one.
Is the problem solved?
HEAT ROLL DAMAGE
4
Do the spots occur at intervals
approximately 62.0 mm?
PRESSURE ROLL DAMAGE
5
Do the spots occur at intervals of
approximately 61.0 mm?
Revision B
Yes No
Replace with
fresh and dry Go to Step 2.
paper.
Replace the
Go to Step 3.
BTR Assy.
Problem
Go to Step 4.
solved.
Replace the
Go to Step 5.
Heat Roll.
Replace the Return to
Pressure Roll Initial
Assy. Analysis.
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