Service manual

T- 3 7
(2) C0040: Suction Fan Motor’s failure to turn
C004C: Ventilation Fan Motor’s failure to turn
C0040
C004C
Relevant Electrical Parts
Suction Fan Motor (M17)
Ventilation Fan Motor (M18)
Master Board (PWB-A)
Step Check Result Action
1 Suction Fan Motor turns when the malfunction
is reset.
NO Check motor for installa-
tion.
2 Suction Fan Motor rotation: the voltage across
PJ13A-1B on Master Board and GND is DC5V
after the malfunction has been reset.
YES Change Master Board.
NO Change motor.
Step Check Result Action
1 Ventilation Fan Motor rotation: the voltage
across PJ9A-7B on Master Board and GND is
DC24V when the Start key is pressed.
NO Change Master Board.
2 Ventilation Fan Motor rotation: the voltage
across PJ9A-5B on Master Board and GND is
DC0V when the Start key is pressed.
YES Change Master Board.
NO Check motor for installa-
tion.
Change motor.
M17
1
2
CN117
3
4
1
2
3
4
GND
DC24V
M18
3
2
CN118
1
3
2
1
5
6
1
CN22
7
3
2
7
1
PJ9A-5B(M18 LD)
PJ9A-6B(GND)
PJ9A-7B(DC24V)
PJ13A-1B(M17 LOCK)
PJ13A-2B(M17 H/L)
PWB-A
4002C09TAA