Black Print - Epson EPL-N2050 Service Manual

EPSON EPL-N2050

3.4.3 Black Print

Problem
The entire page is black.
Troubleshooting
Initial Analysis
1. Inspect the following components. Are they
compatible with your printer version,
correctly installed, not damaged, deformed,
or contaminated?
• CRU
• Spring Clip
• PWBA HKB MCU
• PWBA HVPS
• ROS Assy
• Harness Assy HVPS (J26-J261)
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 3-12. Black Print
Step Action and Question
HVPS CR
Use a sheet of paper to cover the
laser beam window.
1
Generate a test print.
Is the problem still present?
ROS ASSY FAILURE
Use a sheet of paer to cover HALF of
the laser beam window.
2
Generate a test print.
Is the problem still present only on
the uncovered half?
CRU FAILURE
3 Install a new CRU.
Is the problem solved?
Revision B
Yes No
Go to
Table 3-44,
Go to Step 2. "PWBA HVPS
Failure," on
page 100.
Go to
Table 3-28,
Go to Step 3. "ROS Assy
Failure," on
page 90.
Return to
Problem
Initial
solved.
Analysis.
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