Toshiba RAS-077SKV-E6 Service Manual page 82

5
Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction temperature
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 sensor
Sensor
TA, TC (kΩ )
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.
C07, C08, C09 → 500µF/400V or 760µF/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
1 2
Diode check
Tester rod
e d
~
\
1
d
~
\
2
~
\
1
e
~
\
2
– 81 –
FILE NO. SVM-13092
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