Toshiba RAS-07EKV-EE Service Manual page 79

5
Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction temper
e xchanger temper
(TE)
11-8-5. Checking Method for Each Part
No. Part name
1 Electrolytic capacitor
(For raising pressure, smoothing)
2 Converter module
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
ature
ature sensor
Sensor
TA, TC (k )
TGa : Heat pump model only.
TO, TE : Refer to the TA, TC characteristic table in Indoor
(Refer to Table 10-8-3, No.1).
1. Turn OFF the power supply breaker.
2. Discharge all three capacitors completely.
3. Check that safety valve at the bottom of capacitor is not broken.
4. Check that vessel is not swollen or exploded.
5. Check that electrolytic liquid does not blow off.
6. Check that the normal charging characteristics are show in
continuity test by the tester.
C12, C13, C14 → 500µF/400V
1. Turn OFF the power supply breaker.
2. Discharge all three capacitors completely.
3 Check that the normal rectification characteristics are shown in continuity
test by the tester.
Temperature
10°C
105
Checking procedure
C14 C13
C12
MCC-5009
Soldered
surface
1 2
Diode check
Tester rod
e d
~
\
1
d
~
\
2
~
\
1
e
~
\
2
– 78 –
FILE NO. SVM-13029
20°C 30°C 40°C
64 41 27
Case that product is good
Pointer swings once, and
returns slowly. When
performing test once again
under another polarity, the
pointer should return.
~ ~
+ –
1 2 3 4
(DB01)
Resistance value
in good product
50kΩ or more
(0Ω in trouble)
50°C
18