Epson AcuLaser C1100 Service Manual page 199

EPSON AcuLaser C1100
FIP-46
Panel Message
Service Req E526
Possible parts that caused the error
SENSOR ASSY ADC
PWBA MCU
Troubleshooting
Step Check
Check of dirt and foreign bodies on surface
1
of SENSOR ASSY ADC
Are there any dirt or foreign bodies on the
SENSOR ASSY ADC surface?
Check of SENSOR ASSY ADC attachment
2
Is SENSOR ASSY ADC attached correctly?
Does the error recur when the power is
3
turned ON?
5 VDC and 24 VDC power supply check to
4
SENSOR ASSY ADC
The voltage of P422-2 ↔ P422-4 on PWBA
MCU is 24 VDC?
And the voltage of P422-8 ↔ P422-4 is 5
VDC?
Continuity check of HARNESS ASSY ADC
5
Disconnect P/J422 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J422-8 ↔ J431-1
J422-4 ↔ J431-5
J422-2 ↔ J431-7
TROUBLESHOOTING
HARNESS ASSY ADC
LV/HVPS
Yes No
Clean to remove Go to Step [2].
any dirt or
foreign bodies,
and go to step
[2].
Go to Step [4]. Re-attach, and
go to step [3].
Go to Step [4]. End of
procedure
Go to Step [5]. Go to Step [7].
Go to Step [6]. Replace
HARNESS
ASSY ADC.
FIP according to the printer message
Step Check
Check after replacement of SENSOR ASSY
6
ADC
Replace SENSOR ASSY ADC. (p.353)
Does the error recur when the power is turned
ON?
Power supply check to PWBA MCU
7
Are each of the power voltages being supplied
to the following terminals on PWBA MCU
from LV/HVPS?
P410-1 ↔ P410-2: 3. 3 VDC
P410-3 ↔ P410-4: 5 VDC
P410-5/6 ↔ P410-7/8: 24 VDC
Continuity check of HARNESS ASSY MAIN
8
Disconnect P/J410 from PWBA MCU and P/
J502 from LV/HVPS.
Do all of the wiring below have normal
continuity?
J410-1 ↔ J502-1
J410-2 ↔ J502-2
J410-3 ↔ J502-3
J410-4 ↔ J502-4
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8
Revision B
Yes No
Go to Step [7]. End of
procedure
Replace PWBA Go to Step [8].
MCU. (p.404)
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
199