TM 55-1730-229-12
AG 320A0-0MM-000
TO 35C2-3-473-1
TM 1730-12/1
Organizational Troubleshooting (continued)
Table 4-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
(continued)
48.
Note DC POWER ON indicator and set DC POWER switch off.
Step 1.
If DC POWER ON indicator was off (before DC POWER switch was set
to off), go to step 2 of malfunction 47. If not, continue with
step 2 below.
Test dc contactor K2 (malfunction 94).
Step 2.
a. Replace contactor if defective (paragraph 4-52), and perform
operational check.
If contactor tests good, continue with step 3.
b.
Test CURRENT LIMIT SELECTOR switch 1S11 (malfunction 79).
Step 3.
a. Replace switch if defective (paragraph 4-104.b), and perform
operational check.
If switch tests good, do step 4.
b.
Step 4.
Remove battery charger access cover. Lower control panel (paragraph
connector J7, and disconnect harness connector P12 (36, figure 4-38)
from generator control unit (GCU). Check for continuity between the
following points (see FO-6 sheet 2):
If no continuity,
Check continuity
replace wire no.
To
From
X51B20
1S11B-6
J7-24R
X50B20
J7-24L
1S11B-7
X49B20
1S11B-8
J7-23R
X53B20
J7-A
1S11B-C
X51A20
P7-24L
P12-T
X50A20
P7-24R
P12- U
X49A20
P7-23L
P12-V
X53A20
P12-W
P7-A
a. If no continuity, replace indicated wire.
b. If all continuity checks good, replace GCU (paragraph 4-54).
4-77
