Epson AcuLaser C2900N Service Manual page 163

Chapter 1 Troubleshooting
Step
Checking the laser beam path.
Are there any foreign substances between the ROS ASSY
and DRUM CARTRIDGE?
4
Checking the DRUM CARTRIDGE for connection.
Remove the DRUM CARTRIDGE.
Are five HV terminals on the DRUM CARTRIDGE, and five
springs on the frame (PL4.1.10 and PL4.1.15 to 18) dirty
and/or deformed?
5
Checking the ROS ASSY for connection.
Check the connections between the ROS ASSY and PWBA
MCU.
Are P/J40, P/J 41, P/J411 and P/J 412 connected correctly?
6
7 Is the image printed correctly?
Checking after replacing the ROS ASSY.
8 Replace the ROS ASSY. (Refer to RRP4.1.)
Is the image printed correctly?
Epson AcuLaser C2900N
Check
1 - 150
Remedy
Yes
Remove the
foreign Go to step 5.
substances.
Clean and/or
replace the DRUM
Go to step 6.
CARTRIDGE or
SPRING(s).
Reconnect the
connector(s) P/
J40, P/J41, P/J411
Go to step 8.
and/or P/J412
surely, then go to
step 7.
End of work. Go to step 8.
End of work. Go to step 9.
Revision B
No
Confidential