Black Spots - Epson EPL-N2050 Service Manual

EPSON EPL-N2050

3.4.10 Black Spots

Problem
There are spots of toner
randomly scattered over 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
• Heat Roll
• BTR Assy
• Fuser 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 3-19. Black Spots
Step Action and Question
BTR Assy
Inspect the BTR Assy for
1
contamination.
Is the BTR free of contamination?
CRU FAILURE
2 Replace the CRU with a new one.
Is the problem solved?
HEAT ROLL DAMAGE
3
Do the spots occur at intervals of
approximately 62.0 mm?
PRESSURE ROLL DAMAGE
4
Do the spots occur at intervals of
approximately 61.0 mm?
Revision B
Yes No
Replace the
Go to Step 2.
BTR Assy.
Problem
Go to Step 3.
solved.
Replace the
Go to Step 4.
Heat Roll.
Replace the Return to
Pressure Roll Initial
Assy. Analysis.
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