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Chapter 1   Troubleshooting
Epson AcuLaser C2900N
Revision B
Confidential
13
Does the Toner Dispenser Motor function normally?
Checked by [Digital Output] - [Yellow Toner Motor,Magenta 
Toner Motor,Cyan Toner Motor,Black Toner Motor] in [IOT 
Diag] of diagnosis.
Go to step 15.
Replace the 
DISPENSER 
ASSY (refer to 
RRP5.1), then go 
to step 14.
14 Is the image printed correctly? End of work.
Replace the 
printer.
15
Checking after resetting the PWBA MCU.
Reseat the PWBA MCU.
Is the image printed correctly?
End of work. Go to step 16.
16
Checking after resetting the PWBA ESS SFP.
Reseat the PWBA ESS SFP.
Is the image printed correctly?
End of work. Go to step 17.
17
Checking after resetting the TRANSFER ASSY.
Reseat the TRANSFER ASSY.
Is the image printed correctly?
End of work. Go to step 18.
18
Checking after replacing the TRANSFER ASSY.
Replace the TRANSFER ASSY. (Refer to RRP6.3.)
Is the image printed correctly?
End of work. Go to step 19.
19
Checking after replacing the DRUM CARTRIDGE.
Replace the DRUM CARTRIDGE. (Refer to RRP4.6.)
Is the image printed correctly?
End of work. Go to step 20.
20
Checking after resetting the PWBA HVPS.
Reseat the PWBA HVPS. 
Is the image printed correctly?
End of work. Go to step 21.
21
Checking after replacing the DISPENSER ASSY.
Replace the DISPENSER ASSY. (Refer to RRP5.1.)
Is the image printed correctly?
End of work. Go to step 22.
22
Checking after replacing the ROS ASSY.
Replace the ROS ASSY. (Refer to RRP4.1.)
Is the image printed correctly?
End of work.
Replace the 
PWBA HVPS. 
(Refer to RRP4.5.)
Step Check
Remedy
Yes No