Toshiba RAS-B10UFV-E Service Manual page 94

No. Part name
4 Pulse motor valve coil
(Model : CAM-MD12TCTH-2)
RAS-13SAV2-E
RAS-10SAV2-E
5 Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction
temperature sensor (TS),
outdoor heat exchanger
temperature sensor (TE)
11-9-5. Checking Method for Each Part
No. Part name
1 Electrolytic capacitor
(For boost, smoothing)
2 Diode block
CAM-MD12TCTH-2
Position
Gray-White
Gray-Orange
Red-Yellow
Red-Blue
Disconnect the connector and measure the resistance value with tester.
(Normal temp.)
Temperature
Sensor
TD (kΩ )
TO,TS,TE (kΩ )
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 shown in continuity test by
the tester.
C12 C13 C14
C12, C13, C14 . 500µF or 760µF/400V
1. Turn OFF the power supply breaker.
2. Completely discharge the four electrolytic capacitors.
3. Remove the diode block from the PCB (which is soldered in place).
4. Use a multimeter with a pointer to test the continuity, and check that the
diode block has the proper rectification characteristics.
+
1
~ ~
+
3 2
1 2 3
–
4
– 94 –
Checking procedure
Resistance value
43 to 49Ω
43 to 49Ω
43 to 49Ω
43 to 49Ω
10°C 20°C
100 64
20.7 12.6
Checking procedure
Pointer swings once, and returns
slowly. When performing test
once again under another
MCC-5009
polarity, the pointer should return.
Soldered
surface
Tester rod
+
~
2
~ ~
–
~
3
4
–
4
(DBO1)
10 to 20 . when the multimeter probe
is reversed
25°C 30°C 40°C
50 41 27
10.0 7.9 4.5
Case that product is good
Resistance value
in good product
–
+
1
∞
~
2
~
3
50°C
18
—