Epson AcuLaser C1100 Service Manual page 186

EPSON AcuLaser C1100
Step Check
5 VDC power supply check to PWBA MCU
22
The voltage of P410-3 ↔ P410-4 on PWBA
MCU is 5 VDC?
Continuity check of HARNESS ASSY MAIN
23
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
24 VDC power supply check to P/H MOTOR
24
The voltage of P409-6 ↔ P409-5 on PWBA
MCU is 24 VDC?
Continuity check of HARNESS-ASSY P/H1
25
Disconnect the P/J409 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J409-1 ↔ P604-6
J409-2 ↔ P604-5
J409-3 ↔ P604-4
J409-4 ↔ P604-3
J409-5 ↔ P604-2
J409-6 ↔ P604-1
Check after replacement of MOTOR-PH
26
Replace MOTOR-PH. (p.337)
Does the error recur when a test print is made?
24 VDC power supply check to PWBA MCU
27
The voltage of P410-5/6 ↔ P410-7/8 on
PWBA MCU is 24 VDC?
TROUBLESHOOTING
Yes No
Replace PWBA Go to Step [23].
MCU. (p.404)
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
Go to Step [25]. Go to Step [27].
Go to Step [26]. Replace
HARNESS-
ASSY P/H1.
Replace PWBA End of
MCU. (p.404) procedure
Replace PWBA Go to Step [28].
MCU. (p.404)
FIP according to the printer message
Step Check
Continuity check of HARNESS ASSY MAIN
28
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
Continuity check of HARNESS-ASSY P/H1
29
Disconnect the P/J408 from PWBA MCU.
Do all of the wiring below have normal
continuity?
J408-1 ↔ J603-12
J408-2 ↔ J603-11
Continuity check of HARNESS-ASSY P/H2
30
Disconnect P/J603.
Do all of the wiring below have normal
continuity?
P603-1 ↔ P202-2
P603-2 ↔ P202-1
Check of resistance value of CLUTCH
31
ASSY PRE REGI
Disconnect P/J202.
The winding resistance between the terminals
of CLUTCH ASSY PRE REGI is 144Ω ±
10% (20°C)?
Revision B
Yes No
Replace LV/ Repair broken
HVPS. (p.407) or shorted part.
Go to Step [30]. Replace
HARNESS-
ASSY P/H1.
Go to Step [31]. Replace
HARNESS-
ASSY P/H2.
Go to Step [27]. Replace
CLUTCH
ASSY PRE
REGI. (p.338)
186