AcuLaser C2800/C2800D/C3800/C3800D Revision C
TROUBLESHOOTING      Print Quality Trouble FIP 139
Confidential
FIP-P3  A BLACK PAGE IS PRINTED
Before starting troubleshooting, inspect the paper feed path of the printer paper. Check 
the paper feed path for metal staples, paper clips, paper scraps, and other foreign 
matter.
Symptom / Possible Parts
 Symptom 
The printed page is complete black.
 Possible Parts
 IMAGING CARTRIDGE (Y/M/C/K)
 TRANSFER UNIT
 ROS ASSY
 PWBA MCU
 BOARD ASSY, MAIN
 HVPS
Step Check Yes No
1
Check the IMAGING CARTRIDGE (Y/M/
C/K)
Is the specified IMAGING CARTRIDGE (Y/
M/C/K) installed correctly?
Go to Step [2]. Replace the 
specified 
IMAGING 
CARTRIDGE (Y/
M/C/K). (p.271)
2
Check the paper
Is it a new standard paper free from moisture?
Go to Step [3]. Replace it with a 
new standard 
paper free from 
moisture.
3
Check the installation of the TRANSFER 
UNIT
Reinstall the TRANSFER UNIT and make a 
test print. Are images printed normally?
End of procedure Go to Step [4].
4
Check the connection of the ROS ASSY
Is the harness of the ROS ASSY securely 
connected?
Go to Step [5]. Reconnect the 
harness correctly.
5
Check the installation of the IMAGING 
CARTRIDGE (Y/M/C/K)
Reinstall the IMAGING CARTRIDGE (Y/M/
C/K) and make a test print. Are images printed 
normally?
End of procedure Go to Step [6].
6
Check after replacing the ROS ASSY
Replace the ROS ASSY (p.280) and make a test 
print. Are images printed normally?
End of procedure Replace the 
PWBA MCU.
(p.343)
Step Check Yes No