Toshiba RAS-10JAVP-E - Page 71

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No.
1
MCC-813
Soldered
surface
Heat sink IGBT side
C12 C13 C14
Resistance value
in good product
Diode check IGBT check
Tester rod
+ ~ – ~ A
21
+ ~
1
– ~
2
A
Mark
E G
E G
+ –
~
1
~
2
+
–
~
1
~
2
E
~
1
~
2
Resistance value
in good product
50k
or more
(0
in trouble)
50k
or more
(0 in trouble)
Tester rod
+ –
~
2
~
1
~
2
G
E
A
10-9-5. Checking Method for Each Part
Part name
Electrolytic capacitor
(For raising pressure,
smoothing)
Checking procedure
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.
Case that product is good
Pointer swings once, and returns
slowly. When performing test
once again under another polarity,
the pointer should return.
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.
Converter module
2