EPSON AcuLaser C1100 Revision B

TROUBLESHOOTING FIP according to the printer message 238

FIP-79 Electrical Noise

Possible parts that caused the error
Troubleshooting

Photoconductor Unit HOUSING ASSY-GUIDE AD

FUSER ASSY PWBA MCU

LV/HVPS
Step Check Yes No
1Check of external noise
Are there any other electrical apparatus (e. g.
generators, wireless transmitters, or
equipment that use motors) within 3 m of the
printer?
Either turn the other electrical apparatus OFF,
or reposition the printer at least 6 m away
from other electrical apparatus.
Does the electrical noise problem still
continue?
Go to Step [2]. End of
procedure
2Check of AC ground
Is the AC power outlet wired and grounded
correctly?
Go to Step [3]. Ask the
customer to
repair the AC
power outlet.
3Check after replacement of
Photoconductor Unit
Replace DRU ASSY.
Does the electrical noise problem still
continue after replacement?
Go to Step [4]. End of
procedure
4Check of contact between Photoconductor
Unit and HOUSING ASSY-GUIDE AD
Remove Photoconductor Unit.
Is the contact surface of Photoconductor Unit
and CONDUCTOR attached to HOUSING
ASSY-GUIDE AD deformed or are there
foreign objects on the surface?
Replace GUIDE
CRU ASSY
AD.
Go to Step [5].
5Check of grounding of boards
Are all screws fastening PWBA MCU and
LV/HVPS to the frame tightened firmly?
Also, are all screws fastening the PWBA
TRAY 500 of Feeder to the frame tightened
firmly?
Likewise, are all screws fastening PWBA
DUP-L of DUPLEX to the frame tightened
firmly?
Go to Step [6]. Tighten the
screws.
6Check after replacement of FUSER ASSY
Allow FUSER ASSY to cool down
before performing work.
Replace FUSER. (p.388)
Does the electrical noise problem still
continue after replacement?
Go to Step [7]. End of
procedure
7Check after replacement of PWBA MCU
Replace PWBA MCU. (p.407)
Does the electrical noise problem still
continue after replacement?
Replace all
related parts. End of
procedure
Step Check Yes No
WARNING