EPSON AcuLaser C1100 Revision B
TROUBLESHOOTING FIP according to the printer message 160
11
Continuity check of HARNESS ASSY MAIN
Disconnect P/J421 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J421-7 ↔ J608-4
J421-8 ↔ J608-3
J421-9 ↔ J608-2
Replace PWBA
MCU. (p.404)
Repair broken
or shorted part.
12
Operation check of ACTUATOR T/R
Does ACTUATOR T/R move smoothly
without any damage? Does it leave the sensing
area of Tray Path Sensor when there is paper?
Does it enter the sensing area when there is no
paper?
Go to Step [13].
Replace
ACTUATOR
T/R.
(p.481)
13
Operation check of SENSOR T/R
The voltage of P437-15 ↔ P437-14 on
PWBA TRAY CONT is 0 VDC when
ACTUATOR T/R enters the sensing area of
SENSOR T/R, and is 5 VDC when it leaves
the sensing area?
Go to Step [22]. Go to Step [14].
14
5 VDC power supply check to SENSOR T/R
Remove COVER LEFT 500.
The voltage of P437-13 ↔ P437-14 on
PWBA TRAY 500 is 5 VDC?
Go to Step [15]. Go to Step [17].
15
Continuity check of HARNESS-ASSY
FEED MAIN
Disconnect P/J437 and P/J618 from PWBA
TRAY CONT.
Do all of the wiring below have normal
continuity?
J437-13 ↔ J618-3
J437-14 ↔ J618-2
J437-15 ↔ J618-1
Go to Step [16]. Replace
HARNESS-
ASSY FEED
MAIN.
Step Check Yes No
16
Continuity check of HARNESS ASSY FEED 3
Disconnect P/J618.
Do all of the wiring below have normal
continuity?
P618-4 ↔ J120-3
P618-5 ↔ J120-2
P618-6 ↔ J120-1
Replace
SENSOR
T/R. (p.482)
Repair broken
or shorted part.
17
5 VDC power supply check to PWBA
TRAY 500
The voltage of P435-6 ↔ P435-5 on PWBA
TRAY 500 is 5 VDC?
Go to Step [9]. Go to Step [18].
18
Continuity check of HARNESS-ASSY FEED 1
Disconnect P/J435 from PWBA TRAY
CONT.
Do all of the wiring below have normal
continuity?
J435-6 ↔ P608-5
J435-5 ↔ P608-6
Go to Step[19]. Replace
HARNESS-
ASSY FEED 1.
(p.462)
19
Continuity check of HARNESS ASSY MAIN
Disconnect P/J421 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J421-5 ↔ J608-6
J421-6 ↔ J608-5
Go to Step [20]. Repair broken
or shorted part.
20
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 [21].
21
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
