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FILE NO. SVM-03008
1 Electrolytic capacitor 1. Turn OFF the power supply breaker.
(For raising pressure, smoothing) 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
2 Converter module 1. Turn OFF the power supply breaker.
2. Discharge all four capacitors completely.
3 Check that the normal rectification characteristics are shown in continuity
test by the tester.
10-8-5. Checking Method for Each Part
Case that product is good
Pointer swings once, and
returns slowly. When
performing test once again
under another polarity, the
pointer should return.
No. Part name Checking procedure
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
Ω
or more
(0
Ω
in trouble)
50k
Ω
or more
(0
Ω
in trouble)
Tester rod
+
−
~
2
~
1
~
2
G
E
A
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