Epson SEPG04002 User Manual

Page of 565
EPSON AcuLaser C1100
Revision B
TROUBLESHOOTING
Printing Quality-related Trouble
244
3.4.2  Printing quality-related FIP
FIP-P1 Printing is Faint (Weak Tones)
Before starting troubleshooting, inspect the feed path of the printer paper. Check the 
paper feed path for metal staples, paper clips, paper scraps, and other foreign matter. 
†
Problems
Overall density of image is too weak. 
†
ESS and possible parts that caused the error
„
Photoconductor Unit 
„
ROS ASSY 
„
Toner Cartridge Y 
„
Toner Cartridge M
„
Toner Cartridge C
„
Toner Cartridge K
„
2ND BTR ASSY 
„
HOUSING ASSY-GUIDE AD 
„
MOT ASSY MAG 
„
PWBA ESS
„
PWBA MCU
„
LV/HVPS
„
FUSER ASSY 
„
500 FEEDER ASSY OPTION
Step
Check
Yes
No
1
Check of Paper
Load new, dry recommended paper, and 
execute a test print. 
Is the image printed normally?
End of 
procedure
Go to Step [2]. 
2
Check of laser beam path
Are there any obstructions between ROS 
ASSY and Photoconductor Unit?
Remove 
obstacles. 
Go to Step [3]. 
3
Check of ROS window
Is ROS window dirty?
Clean the ROS 
window with 
CLEANER 
ASSY. 
Go to Step [4]. 
4
Check of toner cartridge attachment
Re-attach the toner cartridge, and make a test 
print of the problem image. 
Is the image printed normally?
End of 
procedure
Go to Step [5]. 
5
Check of 2ND BTR ASSY
Remove 2ND BTR ASSY. 
Is 2ND BTR ASSY normal without any dirt, 
damage or wear?
Go to Step [6]. 
Replace 2ND 
BTR ASSY. 
6
Check of contact between Photoconductor 
Unit and frame
Are the contacts of Photoconductor Unit and 
HOUSING ASSY-GUIDE AD dirty or 
deformed?
Clean or replace 
relevant parts. 
Go to Step [7]. 
7
Check after replacement of 
Photoconductor Unit
Replace Photoconductor Unit. 
Make a test print of the problem image. 
Is the image printed normally?
End of 
procedure
Go to Step [8]. 
8
Check after replacement of Toner Cartridge
Replace Toner Cartridge Y/M/C/K. 
Make a test print of the problem image. 
Is the image printed normally?
End of 
procedure
Go to Step [9]. 
9
Check after replacement of PWBA MCU
Replace PWBA MCU. 
Make a test print of the problem image. 
Is the image printed normally?
End of 
procedure
Go to Step [10]. 
10
Check after replacement of ROS ASSY
Replace ROS ASSY. 
Make a test print of the problem image. 
Is the image printed normally?
End of 
procedure
Go to Step [11]. 
Step
Check
Yes
No