Minolta Di450 Service Manual page 445

(2) C0040: Suction Fan Motor's failure to turn
C004C: Ventilation Fan Motor's failure to turn
Suction Fan Motor (M17)
Ventilation Fan Motor (M18)
M18
M17
C0040
Step
1 Suction Fan Motor turns when the malfunction
is reset.
2 Suction Fan Motor rotation: the voltage across
PJ13A-1B on Master Board and GND is DC5V
after the malfunction has been reset.
C004C
Step
1 Ventilation Fan Motor rotation: the voltage
across PJ9A-7B on Master Board and GND is
DC24V when the Start key is pressed.
2 Ventilation Fan Motor rotation: the voltage
across PJ9A-5B on Master Board and GND is
DC0V when the Start key is pressed.
Relevant Electrical Parts
Master Board (PWB-A)
CN22
CN118
1 7
3 3 5 3
2 2 6 2
1 1 7 1
CN117
DC24V
1 1
2 2 GND
3 3
4 4
Check
Check
T-37
PWB-A
PJ9A-5B(M18 LD)
PJ9A-6B(GND)
PJ9A-7B(DC24V)
PJ13A-1B(M17 LOCK)
PJ13A-2B(M17 H/L)
4002C09TAA
Result Action
NO Check motor for installa-
tion.
YES Change Master Board.
NO Change motor.
Result Action
NO Change Master Board.
YES Change Master Board.
NO Check motor for installa-
tion.
Change motor.