White Or Light Bands (Perpendicular To Paper Transport) - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N
3.5.6 White or Light Bands (perpendicular to paper
transport)
Step Action and Question
Paper condition
1 1. Set new dry recommended paper.
2. Print the image in question again.
♦
Does the problem still occur?
Imaging Cartridge
2 1. Install a new Imaging Cartridge.
♦
Have the light or white bands perpendicular to the
paper-feed direction disappeared?
Troubleshooting
Description of the problem:
There are light or completely white bands in
the printed image. These bands are running
perpendicular to the paper-feed direction over
a wide area.
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)
• ROS ASSY
(p.239)
• BOARD ASSY., MAIN
(p.299)
• FUSER ASSY
(p.253)
• Heat Roll
• Pressure Roll
• MAIN MOTOR
(p.279)
• GEAR ASSY HOUSING
(p.281)
• CLUTCH ASSY PH, CLUTCH REGI
• 550 FEEDER ASSY
(p.224)
Yes
Problem
Go to Step 2
solved
Problem
Go to Step 3
solved
Picture Image Trouble
Step Action and Question
BTR ASSY
1. Remove the BTR ASSY. (p.254)
3
2. Check the BTR Assy for dirt or wear.
♦
Is the BTR free from dirt and damage and wear?
ROS ASSY
4
♦
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
5
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? And have the light or white bands
perpendicular to the paper-feed direction disappeared?
Image transfer process
1. Inspect the toner image formed on the drum located
6
just after the transfer portion (the BTR).
(p.219)
♦
Is the toner image on the drum copied onto the
paper completely?
MAIN MOTOR, GEAR ASSY HOUSING
No 1. Replace the DRIVE ASSY OPT FDR. (p.307)
7
GEAR ASSY HOUSING.
2. Print the image in question again.
♦
Does the problem still occur?
Heat Roll and Pressure Roll
1. Remove the FUSER ASSY. (p.253)
WARNING!:
8
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?
Go to Step 4
Go to Step 5
Go to Step 6
Go to Step 7
and
Go to Step 8
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
BTR ASSY
Reconnect the
connector.
Go to 3.4.16
HVPS/MCU
(p.126)
Go to 3.4.16
HVPS/MCU
(p.126)
Problem
solved
Replace the
FUSER ASSY
149
Confidential