Fip-71 Electrical Noise - Epson AcuLaser CX11 Service Manual

EPSON AcuLaser CX11/CX11F

FIP-71 ELECTRICAL NOISE

Possible parts that caused the error
Photoconductor Unit
FUSER ASSY
LV/HVPS
Troubleshooting
Step Check
Check of external noise
1
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?
Check of AC ground
2
Is the AC power outlet wired and grounded
correctly?
Check after replacement of Photoconductor
3
Unit
Replace DRU ASSY.
Does the electrical noise problem still continue
after replacement?
Check of contact between Photoconductor
4
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?
TROUBLESHOOTING
HOUSING ASSY-GUIDE AD
PWBA MCU
Yes No
Go to Step [2]. End of procedure
Go to Step [3]. Ask the customer
to repair the AC
power outlet.
Go to Step [4]. End of procedure
Go to Step [5]. Replace
HOUSING
ASSY-GUIDE
AD.
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Step Check
Check of grounding of boards
5
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?
Check after replacement of FUSER ASSY
6
Allow FUSER ASSY to cool down
W A R N I N G
before performing work.
Replace FUSER. (p.415)
Does the electrical noise problem still continue
after replacement?
Check after replacement of PWBA MCU
7
Replace PWBA MCU.
Does the electrical noise problem still continue
after replacement?
Printer
Yes
Go to Step [6].
Go to Step [7].
Replace all
related parts.
(p.435)
Revision B
No
Tighten the
screws.
End of procedure
End of procedure
244