Epson EPL-N1600 Service Manual page 86

EPSON EPL-N1600
3.5 HORIZONTAL WHITE BANDING
Problem
There are areas of the image that
are extrreamly light or missig
entirely. These missing areas
form wide ands that runs
horizontally across the paper.
Rev. A
Suspect Components
The following components are assosiated with
this specific problem. One or more of these
components may have failed partially or
completely. If you can not isolate the problem
using this procedure, replace each components
listed below, one at a time, until the problem
disappears.
• Plate Contact CR
• Plate Contact DB
• Plate Contact BTR
• Plate Contact DTS
• Plate Contatct RTN
• Imaging Cartridge
• PWBA Hotaru
• C258MAIN Board
Step Action and Question
1 PAPER CONDITIONS
• Is the paper damp?
• Is the paper wrinkled?
2 IMAGING CARTRIDGE
Install a new Imaging Cartridge.
Is the print image normal?
3 HPS OUTPUT VOLTAGES CR AND
DB TO BCR AND MAGNET ROLL
1. Reform the plate contacts CR, DB
and RTN so they make better BCR,
Magnet Roll, OPC Drum and the
terminals on the HPS.
2. Print test image.
Is the print image quality normal?
4 HPS
1. Replace the HPS.
2. Print test image.
Is the print image quality normal?
5 HPS OUTPUT VOLTAGE TR TO
BTR
1. Reform the plate contact BTR so it
makes better contact with the
terminal on the HPS.
2. Print test image.
Is the print image quality normal?
6 HPS
1. Replace the HPS.
2. Print test image.
Is the print image quality normal?
Chapter 3 Troubleshooting
Yes No
Replace with Go to Step 2.
new, dry paper.
Problem solved. Go to Step 3.
Problem solved. Go to Step 4.
Problem solved. Go to Step 5.
Problem solved. Go to Step 6.
Problem solved. -----
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