Toshiba RAS-10YAV-E Service Manual page 48

(4) Indoor fan motor starts rotating by turning on power supply alone
(Operation may be normally performed (selected) by operation on the remote controller.)
<Cause>
IC is built in the indoor fan motor, therefore P .C. board is also mounted to inside of the motor.
If soldering of P.C. board in the motor is defective or IC is defective, the fan motor may rotate by only inputting
the power (turning on power supply).
<Confirmation procedure>
(1) Remove the front panel.(Remove 2 screws and clicks.)
(2) Remove cover of the fan motor lead wire. (1 click)
(3) Check the voltage (DC) using CN10 connector while the fan rotates.
NOTE :
• Do not disconnect the connector while the fan rotates.
• Use a thin tester rod.
Indoor fan starts rotating when power supply breaker is turned "ON".
(Check output voltage (DC) of the fan motor on P.C. board.)
Measure the voltage of the motor connector
CN10 pin 2 (GND : Black) and pin 3 (V line : Yellow)
under condition that the indoor fan rotates.
Above DC 0.4V
P.C. board is defective.
Below DC 0.4V
Motor is defective.
– 48 –
P.C. board
CN10
5
4 Blue
Yellow 3 Yellow
Black 2 Black
1 Red
DC