TM
55-1730-229-12
AG
320A0-OMM-000
TO
35C2-3-473-1
TM
1730-12/1
Table 4-2.
Organizational Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
48.
(continued)
c. Perform operational check.
DC V0LTAGE FAULT INDICATOR DOES NOT LIGHT WHEN DC VOLTS METER READS LESS THAN
49.
+20 VOLTS OR MORE THAN +32 VOLTS.
Do steps 1 through 4 of malfunction 47.
AC POWER ON INDICATOR OFF (ENGINE UP TO SPEED AND AC POWER SWITCH ON).
50.
Step 1.
Check AC VOLTS meter.
a. If AC VOLTS meter reads 0, go to step 3.
b.
If AC VOLTS meter reads in green band, continue with step 2.
Step 2.
Shut down engine and disconnect battery. Lower control panel (para-
graph 4-24.a) and remove battery charger access cover. Disconnect
main harness connector P7 from control panel connector J7, disconnect
harness connector P12 (36, figure 4-38) from GCU, and disconnect
harness connector P11 (32, figure 4-38) from ac contactor K1. Check
for continuity between the following points (see FO-6 sheet 2):
Check continuity
If no continuity,
From
To
replace wire no.
J7-8L
1DS20(-)
X38B20
P7-8R
P11-C
X38A20
P11-D
GND TB
X35A20N
a. If no continuity, replace indicated wire.
b. If all continuity checks good, replace ac contactor K1
c. Perform operational check.
Step 3.
Check control panel AC warning (red) indicators.
a. If any red indicator is lit, refer to malfunction 51 or 52.
b. If all red indicators are off, do step 4.
