Black Stripes (Perpendicular To Paper Transport) - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.5.8 Black Stripes (perpendicular to paper transport)

Step Action and Question
Imaging Cartridge
1. Install a new Imaging Cartridge.
1
2. Print the image in question again.
♦
Have the black stripes running perpendicular to the
paper-feed direction disappeared?
ROS ASSY
♦
2
Is the ROS ASSY installed securely to the frame?
Drive ASSY, GEAR ASSY HOUSING
1. Replace the DRIVE ASSY OPT FDR. (p.307)
3
GEAR ASSY HOUSING.
2. Print the image in question again.
♦
Does the problem still occur?
Troubleshooting
Description of the problem:
Black stripes are running perpendicular to the
paper-feed direction.
Parts below can be the source of this error:
• Imaging Cartridge
• HVPS/MCU
(p.301)
• GUIDE ASSY CRU R
(p.257)
• BTR ASSY
(p.254)
• 150 FEEDER ASSY
(p.211)
• MAIN MOTOR
(p.279)
• GEAR ASSY HOUSING
(p.281)
• ROS ASSY
(p.239)
• BOARD ASSY., MAIN
(p.299)
• LVPS
(p.287)
• 550 FEEDER ASSY
(p.224)
Yes
Problem
Go to Step 2
solved
Reconnect the
connector, or
Go to Step 3 install the
ROS ASSY
securely.
and
Problem
Go to Step 4
solved
Picture Image Trouble
Step Action and Question
Continuity of the GUIDE ASSY CRU R
1. Remove the Imaging Cartridge.
2. Check the plates of the GUIDE ASSY CRU R for
4
deformation, dirt or damage.
3. Check continuity of the plates of the GUIDE ASSY
CRU R.
♦
Do the plates of the GUIDE ASSY CRU R have
continuity, without deformation, dirt or damage?
Connection of the GUIDE ASSY CRU R
1. Check to see if the plates of the GUIDE ASSY CRU
R are in contact with the respective terminals of the
5
HVPS/MCU properly.
♦
Are the plates of the GUIDE ASSY CRU R in
contact with the respective terminals of the HVPS/
MCU properly?
Grounding of the Drum
1. Check the Plate Earth of the GUIDE ASSY CRU R.
6
No
♦
Is the Plate Earth free from dirt and damage and
deformation?
BTR ASSY
1. Remove the BTR ASSY. (p.254)
7
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
8
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?
Revision C
Yes No
Replace the
Go to Step 5 GUIDE ASSY
CRU R
Replace the
Go to Step 6 GUIDE ASSY
CRU R
Repair or
clean the Plate
Earth, or
Go to Step 7
replace the
GUIDE ASSY
CRU R.
Replace the
Go to Step 8
BTR ASSY
Go to 3.4.16
Go to Step 9 HVPS/MCU
(p.126)
151
Confidential