Epson AcuLaser C1100 Service Manual page 227

EPSON AcuLaser C1100
FIP-69
Panel Message
DM Open
Possible parts that caused the error
COVER UP-DUP TRANS
HARNESS-ASSY DUP1
HARNESS ASSY MAIN
PWBA MCU
Troubleshooting
Step Check
Shape check of COVER UP-DUP TRANS
1
Is the actuator of COVER UP-DUP TRANS
that presses SWITCH-DUP DOOR damaged?
Actuator
Operation check of SWITCH-DUP DOOR
2
Disconnect P/J444 from PWBA DUP-L.
Is there continuity on J444-1 ↔ J444-2 when
SWITCH-DUP DOOR is pressed, and does
continuity stop when the switch is released?
Continuity check of HARNESS-ASSY DUP1
3
Disconnect P/J444 from PWBA DUP-L.
Do all of the wiring below have normal
continuity?
J444-1 ↔ J122-2
J444-2 ↔ J122-1
TROUBLESHOOTING
SWITCH-DUP DOOR
HARNRSS-ASSY DUP2
PWBA DUP-L
LV/HVPS
Yes No
Replace Go to Step [2].
COVER UP-
DUP TRANS.
(p.437)
Go to Step [4]. Go to Step [3].
Replace Replace
SWITCH-DUP HARNESS-
DOOR. (p.430) ASSY DUP1.
FIP according to the printer message
Step Check
Continuity check of HARNESS-ASSY DUP2
4
Disconnect P/J443 from PWBA DUP-L.
Is the continuity normal between all terminals
of J443 ↔ P607 (connector on Duplex to be
connected to the printer)?
Continuity check of HARNESS ASSY MAIN
5
Disconnect the P/J420 from PWBA MCU.
Is the continuity normal between all terminals
of J420 ↔ J607?
Check after replacement of PWBA DUP-L
6
Replace PWBA DUP-L. (p.442)
Does the error recur when the power is turned
ON?
Check after replacement of PWBA MCU
7
Replace PWBA MCU. (p.404)
Does the error recur when the power is turned
ON?
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 [5]. Replace
HARNESS-
ASSY DUP2.
Go to Step [6]. Repair broken
or shorted part.
Go to Step [7]. End of
procedure
Go to Step [8]. End of
procedure
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
227