EPSON AcuLaser CX11/CX11F Revision B
TROUBLESHOOTING Printer 208
FIP-40
 Panel Message
îš„ Service Req E510
 Possible parts that caused the error
 Troubleshooting
îš„ ROS ASSY îš„ HARNESS ASSY MAIN
îš„ PWBA MCU îš„ LV/HVPS
Step Check Yes No
1
Check of ROS ASSY attachment
Re-attach ROS ASSY. (p.401)
Does the error recur when the power is turned
ON?
Go to Step [2]. End of procedure
2
Continuity check of HARNESS ASSY MAIN
Remove ROS ASSY. (p.401)
Disconnect the P/J407 from PWBA MCU.
Is the continuity normal between all terminals
of J407 ↔ J601?
Go to Step [3]. Repair broken or
shorted part.
3
5 VDC power supply check to ROS and
PWB SOS
The voltage of P407-16 ↔ P407-14 on PWBA
MCU is 5 VDC?
Go to Step [4]. Go to Step [6].
4
Check after replacement of PWBA MCU
Replace PWBA MCU. (p.432)
Does the error recur when the power is turned
ON?
Go to Step [5]. End of procedure
5
Check after replacement of ROS ASSY
Replace ROS ASSY. (p.401)
Does the error recur when the power is turned
ON?
Go to FIP-1 81
Electrical noise.
End of procedure
6
5 VDC power supply check to PWBA MCU
The voltage of P410-3 ↔ P410-4 on PWBA
MCU is 5 VDC?
Replace PWBA
MCU. (p.432)
Go to Step [7].
7
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?
J410-3 ↔ J502-3
J410-4 ↔ J502-4
Replace LV/
HVPS. (p.435)
Repair broken or
shorted part.
Step Check Yes No
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