EPSON AcuLaser CX11/CX11F Revision B
TROUBLESHOOTING Printer 224
FIP-52
Panel Message
Service Req E542
Possible parts that caused the error
Troubleshooting
DRIVE ASSY PRO SENSOR IBT RETRACT
HARNESS ASSY MAIN PWBA MCU
LV/HVPS
Step Check Yes No
1
Check of connection of DRIVE ASSY PRO
(IBT Cleaner Retract Motor)
Is connector P/J414 connected firmly to PWBA
MCU?
Go to Step [2]. Re-connect the
connector.
2
24 VDC power supply check to DRIVE
ASSY PRO (IBT Cleaner Retract Motor)
The voltage of P414-3 ↔ P414-2 on PWBA
MCU 2 is 4 VDC?
Go to Step [3]. Go to Step [8].
3
Check after replacement of DRIVE ASSY
PRO
Replace DRIVE ASSY PRO. (p.421)
Does the error recur when a test print is made?
Go to Step [4]. End of procedure
4
5 VDC power supply check to SENSOR IBT
RETRACT
The voltage of P415-3 ↔ P415-4 on PWBA
MCU is 5 VDC?
Go to Step [5]. Go to Step [8].
5
Continuity check of HARNESS ASSY MAIN
Disconnect P/J415 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J415-3 ↔ J107-3
J415-4 ↔ J107-2
J415-5 ↔ J107-1
Go to Step [6]. Replace
HARNESS
ASSY MAIN.
6
Check after replacement of SENSOR IBT
RETRACT
Replace SENSOR IBT RETRACT. (p.383)
Does the error recur when a test print is made?
Go to Step [7]. End of procedure
7
Check after replacement of PWBA MCU
Replace PWBA MCU. (p.432)
Does the error recur when a test print is made?
Go to Step [9]. End of procedure
8
Power supply check to PWBA MCU
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
Replace PWBA
MCU. (p.432)
Go to Step [9].
9
Continuity check of HARNESS ASSY MAIN
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
Replace LV/
HVPS. (p.435)
Repair broken or
shorted part.
Step Check Yes No
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