Toshiba RAS-07SKSX-1 Service Manual page 48

(3) Checking procedure
No. Pr ocedure
1 Shut off the power supply and
remove the P.C. board assembly
from the electronic parts base.
Remove the connecting cable from
the terminal block.
2 Remove the connector for the motor,
and turn the power on.
If the OPERATION lamp blinks
(0.5 sec. : ON, 0.5 sec. : OFF) when
the power turning on, the checking
points described as 1-4 of right
column are not necessary to
perform.
3 Make the operation status by
pushing once the [START/STOP]
button, except the status of [FAN
ONLY], [ON TIMER].
4 Start the operation with the system
which the time of the restart delay
timer is shortened.
5 Make the operation status by
pressing once the [START/STOP]
button.
1. The time of the restart delay timer
is shortened.
2. Cool operation
3. Air volume [AUTO]
4. Make the setting temperature lower
enough than room temperature.
5. Continuous operation.
6
Turn the power on after connecting
the motor connector. Start the
operation with the following
condition.
1. Operation [Cooling]
2. Airflow [High fan]
3. Continuous operation
T ab le 9-6-1
Check Point (Symptom)
1. Is the fuse blown?
V oltage chec k
1. Betw een
of RY01 and CN31
4
(A C 220~240V)
2. Between + and − of C27
(DC 310 ~ 340V)
3 . Between and
5V GND
4 . Between and
12V GND
Voltage check
1. Voltage of relay coil. (DC 12V)
Between pin C of Q02 and
2.Between No. 1 and 2 of
connecting cable terminal block.
(AC 220~240V)
1. All indicators light for 3 sec..
2. Indicators do not indicate normally
after approximate 3 sec..
1. Compressor does not operate.
2. OPERATION lamp blinks.
1.Motor does not rotate. (The key
operation is accepted.)
2. The Motor rotates, but it vibrates
too much.
− 47 −
FILE NO. SVM-08028
Causes
1. • Application of shoc
• Ov er load b y shor
par ts .
1. • A C po wer cord is def
P oor contact of the ter
•
Miss wir ing of the po
•
2. • Capacitor (C25, C26) is def
• Line filter (L01) is def
Diode (DB01) is def
•
3 . IC02 is def ectiv e
4. T01, DB01, R64, C27 are
detective.
1 . Breaking wire of the rela
def ectiv e rela y dr
2 . P oor contact of rela
GND
}
Def ectiv e indicator
housing assemb
1. The temperature of the indoor
heat e xchanger is abnor
lo w er .
2. Poor contact of the heat
exchanger sensor. (The connector
is disconnected.) (CN01)
3. Heat exchanger sensor, main
P.C. board are defective. (Refer to
Table 9-6-2 for the judgment of
defective resistance values.)
4. Main P.C. board is defective.
1. Poor contact of the motor
connector.
2. P.C. board is defective.
k v oltage .
t-circuit of the
ectiv e .
minal plate.
wer rela y .
ectiv e .
ectiv e .
ectiv e .
.
y coil,
iv er .
y .
, or poor
ly . (CN12)
mally