EPSON AcuLaser C1100 Revision B
TROUBLESHOOTING FIP according to the printer message 190
9
5 VDC power supply check to SENSOR
UPPER PASS
The voltage of P444-8 ↔ P444-9 on PWBA
DUP-L is 5 VDC?
Go to Step [10]. Go to Step [15].
10
Continuity check of HARNESS-ASSY DUP1
Disconnect P/J444 from PWBA DUP-L.
Do all of the wiring below have normal
continuity?
J444-6 ↔ J124-3
J444-7 ↔ J124-2
J444-8 ↔ J124-1
Replace
SENSOR
UPPER PASS.
(p.422)
Replace
HARNESS-
ASSY DUP1.
11
Check after replacement of MOTOR ASSY
DUP INV
Replace MOTOR ASSY DUP INV. (p.424)
Does the error recur when a test print is made
in the duplex mode?
Go to Step [12]. End of
procedure
12
Check after replacement of PWBA DUP-L
Replace PWBA DUP-L. (p.442)
Does the error recur when a test print is made
in the duplex mode?
Go to Step [13]. End of
procedure
13
Continuity check of HARNESS ASSY DUP2
Disconnect P/J443 from PWBA DUP-L.
Is the continuity normal between all terminals
of J443 ↔ P607?
Go to Step [14]. Replace
HARNESS
ASSY DUP2.
14
Continuity check of HARNESS ASSY MAIN
Disconnect the P/J420 from PWBA MCU.
Is the continuity normal between all terminals
of J420 ↔ J607?
Replace PWBA
MCU. (p.404)
Repair broken
or shorted part.
15
5 VDC power supply check to PWBA DUP-L
The voltage of P443-7 ↔ P443-8 on PWBA
DUP-L is 5 VDC?
Replace PWBA
DUP-L. (p.442)
Go to Step [16].
Step Check Yes No
16
Continuity check of HARNESS ASSY DUP2
Disconnect P/J443 from PWBA DUP-L.
Do all of the wiring below have normal
continuity?
J443-7 ↔ P607-6
J443-8 ↔ P607-5
Go to Step [17]. Replace
HARNESS
ASSY DUP2.
17
Continuity check of HARNESS ASSY MAIN
Disconnect the P/J420 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J420-6 ↔ J607-7
J420-5 ↔ J607-8
Go to Step [18]. Repair broken
or shorted part.
18
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.404)
Go to Step [19].
19
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.407)
Repair broken
or shorted part.
Step Check Yes No
