Black Spots - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.5.10 Black Spots

Step Action and Question
Imaging Cartridge
1 1. Install a new Imaging Cartridge.
2. Execute test printing.
♦
Have the spots disappeared?
BTR ASSY
1. Remove the BTR ASSY. (p.254)
2
2. Check the BTR Assy for dirt or wear.
♦
Is the BTR free from dirt and damage and wear?
ROS ASSY
3
♦
Is the connector of the ROS ASSY connected
completely?
Image developing process
1. Execute test printing, and turn off the power to the
printer during printing.
2. Remove the Imaging Cartridge carefully, and
4
inspect the toner image formed on the drum located
just before the transfer portion (BTR).
♦
Is the image on the drum such that it has been
completely formed, the region is clear and black,
and can be easily read?
Troubleshooting
Description of the problem:
Over the whole paper, spots of toner lie
scattered disorderly.
Parts below can be the source of this error:
• Imaging Cartridge
• HVPS/MCU
(p.301)
• BTR ASSY
(p.254)
• 150 FEEDER ASSY
(p.211)
• ROS ASSY
(p.239)
• GUIDE ASSY CRU R
(p.257)
• BOARD ASSY., MAIN
(p.299)
• 550 FEEDER ASSY
(p.224)
Yes
Problem
Go to Step 2
solved
Replace the
Go to Step 3
BTR ASSY
Reconnect the
Go to Step 4
connector.
Go to
Go to Step 5 HVPS/MCU
(p.126)
Picture Image Trouble
Step Action and Question
Heat Roll and Pressure Roll
1. Remove the FUSER ASSY. (p.253)
WARNING!:
5
2. Turn the Gear HR by hand, and inspect the Heat
Roll and the Pressure Roll.
♦
Are the Heat Roll and the Pressure Roll free from
scratches, dirt and damage?
No
3.4.16
Wait until the Fuser cools, and
See "Parts
then start work.
below can be
the source of
this error"
Revision C
Yes No
Replace the
FUSER ASSY
154
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