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
1
Check 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
2
Check 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.
3
Check after replacement of
Photoconductor Unit
Replace DRU ASSY.
Does the electrical noise problem still
continue after replacement?
Go to Step [4]. End of
procedure
4
Check 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].
5
Check 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.
6
Check 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
7
Check 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
W A R N IN G
