Epson AcuLaser C2800 - Page 107

AcuLaser C2800/C2800D/C3800/C3800D Revision C
TROUBLESHOOTING Engine-related Trouble FIP 107
Confidential
FIP 1-28 Service Req E600 (ADC Sensor Error)
 Possible parts that caused the error
 Troubleshooting
 TRANSFER UNIT
 PWBA MCU
 HARNESS ASSY FRONT COVER
 HARNESS ASSY R SIDE
Step Check Yes No
1
Check after turning the power OFF and ON.
Does the error recur even when the power is
turned off and back on again?
Go to Step [2]. End of procedure
2
Check the installation of the TRANSFER
UNIT
Is the TRANSFER UNIT installed correctly?
Go to Step [3]. Reinstall the
TRANSFER
UNIT correctly.
3
Check the connection of the TRANSFER
UNIT
Check the connection state between
TRANSFER UNIT and PWBA MCU.
Are P/J2721, P/J272, and P/J27 connected
correctly?
Go to Step [4]. Reconnect the
P/J2721, P/J272,
and P/J27
correctly.
4
Check the continuity of the HARNESS ASSY
FRONT COVER
Is the continuity between P/J2721 <=> P/J272
normal?
Go to Step [5]. Replace the
HARNESS
ASSY FRONT
COVER.
5
Check the continuity of the HARNESS ASSY
R SIDE
Is the continuity between P/J27 <=> P/J272
normal ?
Go to Step [6]. Replace the
HARNESS
ASSY R SIDE.
6
Check the power voltage supply to the ADC
Sensor in the TRANSFER UNIT.
Measure the voltage between PWBA MCU
ground <=> P/J27-A7PIN.
Is the power voltage (approx. +5 V) output?
Replace the
TRANSFER
UNIT. (p.268)
Replace the
PWBA MCU.
(p.343)