Blank Print - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.5.3 Blank Print

Step Action and Question
Installation of HVPS/MCU
1
1. Check if the HVPS/MCU is assembled to under the
hook of the FRAME.
♦
Does the HVPS/MCU assemble properly?
Path of laser beam
2
1. Inspect the path of laser beam from the ROS ASSY
to the Drum.
♦
Is the path of laser beam free from obstacles?
ROS ASSY
1. Check the window of the ROS ASSY to see if it is
free from by obstacles, etc. that blind it completely.
3 ♦
Is the connector of the ROS ASSY connected?
Troubleshooting
Description of the problem:
The whole paper is printed in completely
white.
Parts below can be the source of this error:
• Imaging Cartridge
• GUIDE ASSY CRU R
(p.257)
• BTR ASSY
(p.254)
• 150 FEEDER ASSY
(p.211)
• ROS ASSY
(p.239)
• BOARD ASSY., MAIN
(p.299)
• FUSER ASSY
(p.253)
• LVPS
(p.287)
• HVPS/MCU
(p.301)
• 550 FEEDER ASSY
(p.224)
Yes
Reassmble the
Go to Step 2
HVPS/MCU
Remove the
Go to Step 3
obstacle.
Remove the
obstacles from
the window of
the ROS
Go to Step 4 ASSY, or
connect the
connector of
the ROS
ASSY.
Picture Image Trouble
Step Action and Question
Imaging Cartridge
1. Install a new Imaging Cartridge.
4
2. Print the image in question again.
♦
Is image density normal?
BTR ASSY
1. Remove the BTR ASSY. (p.254)
5
2. Check the BTR Assy for dirt or wear.
♦
Is the BTR free from dirt and damage and wear?
Image developing process
1. Execute test printing, and turn off the power to the
printer during printing.
2. Remove the Imaging Cartridge carefully, and
6
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
No
completely formed, the region is clear and black,
and can be easily read?
Image transfer process
1. Inspect the toner image formed on the drum located
7
just after the transfer portion (the BTR).
♦
Is the toner image on the drum completely copied
onto the paper?.
Revision C
Yes No
Problem
Go to Step 5
solved
Replace the
Go to Step 6
BTR ASSY
Go to 3.4.16
Go to Step 7 HVPS/MCU
(p.126)
See "Parts
Go to 3.4.16
below can be
HVPS/MCU
the source of
(p.126)
this error"
146
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