Toshiba RAS-10SKVR-E2 Service Manual page 82

11-9-5. Checking Method for Each Part
No. Part name
1 Electrolytic capacitor
(For boost, smoothing)
2 Diode block
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.
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81
Checking procedure
Case that product is good
Pointer swings once, and returns
slowly. When performing test
once again under another
MCC-5009
polarity, the pointer should return.
Soldered
surface
~
+
1 2 3
(DB01)
2
Diode check
Resistance value
Tester rod
in good product
e d
~
\
1
50kΩ or more
d
~
\
(0Ω in trouble)
2
~
\
1
e
~
\
2
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FILE NO. SVM-10029
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