Epson AcuLaser C2900N Service Manual page 153

Chapter 1 Troubleshooting
Step
Checking the laser beam path.
Are there any foreign substances between the ROS ASSY
and DRUM CARTRIDGE?
11
Does the Toner Dispenser Motor function normally?
Checked by [Digital Output] - [Yellow Toner Motor,Magenta
12
Toner Motor,Cyan Toner Motor,Black Toner Motor] in [IOT
Diag] of diagnosis.
13 Is the image printed correctly?
Checking after resetting the PWBA MCU.
14 Reseat the PWBA MCU.
Is the image printed correctly?
Checking after resetting the PWBA ESS SFP.
15 Reseat the PWBA ESS SFP.
Is the image printed correctly?
Checking after resetting the TRANSFER ASSY.
16 Reseat the TRANSFER ASSY.
Is the image printed correctly?
Checking after replacing the TRANSFER ASSY.
17 Replace the TRANSFER ASSY. (Refer to RRP6.3.)
Is the image printed correctly?
Checking after replacing the DRUM CARTRIDGE.
18 Replace the DRUM CARTRIDGE. (Refer to RRP4.6.)
Is the image printed correctly?
Checking after resetting the PWBA HVPS.
19 Reseat the PWBA HVPS.
Is the image printed correctly?
Checking after replacing the DISPENSER ASSY.
20 Replace the DISPENSER ASSY. (Refer to RRP5.1.)
Is the image printed correctly?
Checking after replacing the ROS ASSY.
21 Replace the ROS ASSY. (Refer to RRP4.1.)
Is the image printed correctly?
Epson AcuLaser C2900N
Check
1 - 140
Remedy
Yes
Remove the
foreign Go to step 12.
substances.
Replace the
DISPENSER
Go to step 14. ASSY (refer to
RRP5.1), then go
to step 13.
Replace the
End of work.
printer.
End of work. Go to step 15.
End of work. Go to step 16.
End of work. Go to step 17.
End of work. Go to step 18.
End of work. Go to step 19.
End of work. Go to step 20.
End of work. Go to step 21.
Replace the
End of work. PWBA HVPS.
(Refer to RRP4.5.)
Revision B
No
Confidential