Toshiba RAS-07YKX Service Manual page 40

9-3-6. Only the Indoor Fan does not Operate
< Check procedure >
Shut off the power
supply once.
Turn the power supply.
Does the fan
NO
stop in no operating
status?
YES
Start the operation
with low fan setting
in cool operation.
NO
Does the fan rotate?
YES
Change the setting of
cooling to high fan.
NO
Does the fan speed
become higher?
YES
Normal
*
Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
damage of the motor.
Control P.C. board is defective.
Does AC 120V
or higher voltage apply
to between red and black
lead of fan motor?
YES
Shut off the power supply.
Does the cross
flow fan rotate
normally?
YES
Turn on the power supply.
Operation stops
Is the rotation signal
(DC+5V-0V) output between
(blue lead wire) and
lead wire) of the motor connector
(CN10) when rotating the cross
flow fan by hand in no operating
status ? (2 pulses/one turn)
YES
Replace the control
P.C. board.
– 40 –
NO

Motor control circuit failure

(IC30, IC03)or 12V Power

circuit or Thermal fuse in

fan motor failure.
NO
4
(black
2
NO
Replace the P.C. board.
Replace the P.C. board.




Repair the bearing of
the drain fan.
Replace the fan motor.