Epson AcuLaser C1100 Service Manual page 190

EPSON AcuLaser C1100
Step Check
5 VDC power supply check to SENSOR
9
UPPER PASS
The voltage of P444-8 ↔ P444-9 on PWBA
DUP-L is 5 VDC?
Continuity check of HARNESS-ASSY DUP1
10
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
Check after replacement of MOTOR ASSY
11
DUP INV
Replace MOTOR ASSY DUP INV.
Does the error recur when a test print is made
in the duplex mode?
Check after replacement of PWBA DUP-L
12
Replace PWBA DUP-L. (p.442)
Does the error recur when a test print is made
in the duplex mode?
Continuity check of HARNESS ASSY DUP2
13
Disconnect P/J443 from PWBA DUP-L.
Is the continuity normal between all terminals
of J443 ↔ P607?
Continuity check of HARNESS ASSY MAIN
14
Disconnect the P/J420 from PWBA MCU.
Is the continuity normal between all terminals
of J420 ↔ J607?
5 VDC power supply check to PWBA DUP-L
15
The voltage of P443-7 ↔ P443-8 on PWBA
DUP-L is 5 VDC?
TROUBLESHOOTING
Yes No
Go to Step [10]. Go to Step [15].
Replace Replace
SENSOR HARNESS-
UPPER PASS. ASSY DUP1.
(p.422)
Go to Step [12]. End of
procedure
(p.424)
Go to Step [13]. End of
procedure
Go to Step [14]. Replace
HARNESS
ASSY DUP2.
Replace PWBA Repair broken
MCU. (p.404) or shorted part.
Replace PWBA Go to Step [16].
DUP-L. (p.442)
FIP according to the printer message
Step Check
Continuity check of HARNESS ASSY DUP2
16
Disconnect P/J443 from PWBA DUP-L.
Do all of the wiring below have normal
continuity?
J443-7 ↔ P607-6
J443-8 ↔ P607-5
Continuity check of HARNESS ASSY MAIN
17
Disconnect the P/J420 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J420-6 ↔ J607-7
J420-5 ↔ J607-8
5 VDC power supply check to PWBA MCU
18
The voltage of P410-3 ↔ P410-4 on PWBA
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN
19
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
Revision B
Yes No
Go to Step [17]. Replace
HARNESS
ASSY DUP2.
Go to Step [18]. Repair broken
or shorted part.
Replace PWBA Go to Step [19].
MCU. (p.404)
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
190