TM
55-1730-229-12
AC
320A0-OMM-000
TO
35C2-3-473-1
TM
1730-12/1
Table 4-2.
Organizational Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
71.
(continued)
Check continuity
If no continuity,
From
To
replace wire no.
K2-A2
P3A4/0
R1(+)
R1(-)
TB4-11
G2F20
P6-H
TB4-10
G2C20
J6-H
G2B20
1S3-3
1DS1(+)
1S3-2
G2A20
1DS1(-)
J6-J
G4A20N
P6-J
T133-11
G4B20
a. If no continuity, replace indicated wire, and perform
operational check.
b. If all continuity checks good clutch switch S4 or wiring is
defective. Notify maintenance supervisor.
Step 4.
Operate system in DC mode (paragraph 2-5).
a. If DC VOLTS meter 1M11 reads in green band, do step 5.
b. If DC VOLTS meter reads 0, see malfunction 42.
Step 5.
Set DC POWER switch to OFF and shut down engine. Test diode TB3-CR3
(malfunction 82).
a. Replace diode if defective (paragraph 4-33.b).
b. If diode tests good, replace wire G25A20 between diode (TB3-
11 CATHODE) and K2-X2 (18, figure 4-38, FO-8).
c. Perform operational check.
Step 6.
Connect battery, set MASTER SWITCH to ON, set DC POWER switch to OFF,
and set BATTERY OUTPUT switch to ON.
a. If DC VOLTS meter 1M11 reads in green band, do step 7.
b. If DC VOLTS meter reads 0, test battery output contactor K3
and wiring (malfunction 87).
4-100
