−
50
−
Cooling Model
Operation
Check Items
Main cause
Countermeasure
Symptom
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION
lamp blink?
YES
NO
Does the power turn on
by pushing the [START/
STOP] button of the
remote control?
YES
Does the transmission
indicator of remote
control flash normally
and transmit certainly?
NO
NO
Remote control is
defective.
YES
(No problem)
Replace the remote
control.
Does the fuse
(F01) blow?
Parts (R21, R22, SG01,
C15, C01, DB
50
, C
50
,
T
T01) are defective.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
Does the thermal
fuse blow?
(Under PF. Terminal)
Wrong wiring of
AC cord or connecting
cable is defective.
Replace the
thermal fuse set.
Check connection.
Is the indication voltage
(DC12V or 5V) of main
P.C. board correct?
Does the CN1
4
connector the wrong
connecting?
P .C. board is
defective.
Replace the main
P.C. board.
Is the voltage
across C
50
measured
DC
12
~
15
V?
Refer to the paragraph
"Pre-check", or defective circuit
before power P.C. board block.
Is the secondary
voltage of
transformer (T
T-10
)
measured DC12V,
?
* 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.
Re-wiring the cable.
Shut off the power
YES
NO NO
supply once, and turn
it on again after
disconnecting the motor
connector CN10*.
Is the secondary
voltage of transformer
measured DC12V,?
Replace
the main
P.C. board.
Motor is defective.
NO
FILE NO. SVM-04017
Ttansformer (TT-10)
for power supply is
defective.
