EPSON AcuLaser CX11/CX11F Revision B
TROUBLESHOOTING Printer 217
FIP-47
 Panel Message
îš„ Service Req E520
 Possible parts that caused the error
 Troubleshooting
îš„ HARNESS ASSY MAIN îš„ MOT ASSY MICRO
îš„ SENSOR 2BTR RETRACT îš„ HARNESS ASSY ADC
îš„ PWBA MCU îš„ LV/HVPS
Step Check Yes No
1
Check of DRIVE ASSY BTR attachment
Is the DRIVE ASSY BTR attached correctly?
Go to Step [2]. Re-attach, and go
to step [2].
2
Check of 2ND BTR ASSY attachment
Is 2ND BTR ASSY attached correctly?
Go to Step [4]. Re-attach, and go
to step [3].
3
Does the error recur when a test print is
made?
Go to Step [4]. End of procedure
4
Continuity check of HARNESS ASSY MAIN
Disconnect the P/J403 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J403-1 ↔ J600-3
J403-2 ↔ J600-2
J403-3 ↔ J600-1
Go to Step [5]. Repair broken or
shorted part.
5
24 VDC power supply check to MOT ASSY
MICRO (2nd BTR Retract Motor)
The voltage of P403-3 ↔ P403-2 on PWBA
MCU is 24 VDC?
Go to Step [6]. Go to Step [11].
6
Check after replacement of MOT ASSY
MICRO
Replace MOT ASSY MICRO. (p.427)
Does the error recur when a test print is made?
Go to Step [7]. End of procedure
7
5 VDC power supply check to SENSOR
2BTR RETRACT
The voltage of P418-4 ↔ P418-5 on PWBA
MCU is 5 VDC?
Go to Step [8]. Go to Step [11].
8
Continuity check of HARNESS ASSY ADC
Disconnect the P/J418 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J418-4 ↔ J112-3
J418-5 ↔ J112-2
J418-6 ↔ J112-1
Go to Step [9]. Replace
HARNESS
ASSY ADC.
9
Check after replacement of SENSOR 2BTR
RETRACT
Replace SENSOR 2BTR RETRACT. (p.382)
Does the error recur when a test print is made?
Go to Step [10]. End of procedure
10
Check after replacement of PWBA MCU
Replace PWBA MCU. (p.432)
Does the error recur when a test print is made?
Go to Step [12]. End of procedure
Step Check Yes No
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