TM 55-1730-229-12
AC 320A0-OMM-000
TO 35C2-3-473-1
TM 1730-12/1
Organizational Troubleshooting (continued)
Table 4-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
(continued)
53.
a.
If no continuity, replace wire X41A20, and perform
operational check.
b.
If continuity, do step 6.
Test AC PHASE SELECT switch 1S9 (malfunction 79).
Step 6.
a. Replace switch if defective (paragraph 4-104.b), and perform
operational check.
If switch test good, do step 7.
b.
Test ac contactor K1 (malfunction 95).
Step 7.
a. Replace contactor if defective (paragraph 4-53).
b. If contactor tests good, replace AC VOLTS meter 1M80
c. Perform operational check.
AC HERTZ METER READS 0 (AC VOLTS METER READS NORMAL).
54.
Shut down engine. Disconnect battery and lower control panel (paragraph
nector P7 from control panel connector J7, and disconnect harness connectors
P9 and P18 from lower tray connectors J9 and J18. Check for continuity
between the following points (see FO-6 sheet 2):
If no continuity,
Check continuity
replace wire no.
From
To
X9N20N
P7-16R
P18-A
X41C20
P9-J
P7-7R
X9J20H
P7-14L
P9-H
X59B20
P7-15R
P9-G
J9-J
X41D20
Frequency transducer
(22, figure 4-41)
115 VAC (+)
X9K20N
J9-H
Frequency transducer
MTR (-)
