INVERTEC V300-I
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F-29
TROUBLESHOOTING & REPAIR
7. Test Capacitors C1 and C2 and replace
both Capacitors if either is faulty.
NOTE: Faulty Capacitors could be the rea-
son for Component D13 (Rectifier) failure.
Visually inspect Capacitors for leakage,
damage, etc., and use appropriate test
equipment to determine component integrity
(also check/test Switch Boards for damage).
5. Replace Input Rectifier Component D13
when any of tests A-L are not OK.
NOTE: When installing new Input
Rectifier, torque mounting nuts (in a
cross tightening pattern) to 6 inch-
pounds (.7 Nm). Torque terminals to 26
inch-pounds (3 Nm). ALWAYS GO TO
STEP 6 TO CHECK RELATED COMPO-
NENTS.
6. Inspect Main Power Switch S1 and
replace if faulty. Go to step 7.
INPUT RECTIFIER TESTS
(continued)
TABLE F.5
INPUT RECTIFIER TEST
Test Points
Steps
+ Probe
– Probe
Acceptable Meter Reading
A
9
H1
Greater than 100K ohms
B
9
A
Greater than 100K ohms
C
9
H5
Greater than 100K ohms
D
H1
9
Less than 100 ohms
E
A
9
Less than 100 ohms
F
H5
9
Less than 100 ohms
G
12
H1
Greater than 100 ohms
H
12
A
Greater than 100 ohms
I
12
H5
Greater than 100 ohms
J
H1
12
Less than 100 ohms
K
A
12
Less than 100 ohms
L
H5
12
Less than 100 ohms
