EPSON AcuLaser C1100 Revision B
TROUBLESHOOTING FIP according to the printer message 169
10
Check after replacement of MOTOR-PH
Replace MOTOR-PH. (p.337)
Does the error recur when the power is turned
ON?
Replace PWBA
MCU. (p.404)
End of
procedure
11
5 VDC power supply check to SENSOR REGI
The voltage of P408-10 ↔ P408-11 on
PWBA MCU is 5 VDC?
Go to Step[12]. Go to Step[16].
12
Continuity check of HARNESS-ASSY P/H1
Disconnect the P/J408 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J408-10 ↔ J603-3
J408-11 ↔ J603-2
J408-12 ↔ J603-1
Go to Step [13]. Replace
HARNESS-
ASSY P/H1.
13
Continuity check of HARNESS-ASSY P/H2
Disconnect the P/J603 from PWBA MCU.
Do all of the wiring below have normal
continuity?
P603-10 ↔ J102-3
P603-11 ↔ J102-2
P603-12 ↔ J102-1
Replace
SENSOR REGI.
(p.336)
Replace
HARNESS-
ASSY P/H2.
14
24 VDC power supply check to PWBA MCU
The voltage of P410-5/6 ↔ P410-7/8 on
PWBA MCU is 24 VDC?
Replace PWBA
MCU. (p.404)
Go to Step [15].
15
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?
J410-5 ↔ J502-5
J410-6 ↔ J502-6
J410-7 ↔ J502-7
J410-8 ↔ J502-8
Replace LV/
HVPS. (p.407)
Repair broken
or shorted part.
Step Check Yes No
16
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 [17].
17
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
