TM 55-1730-229-12
AG 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)
8.
Step 4.
Check for continuity between TB1-14 (ANODE) and ground. See figures
a. If continuity, replace zener diode TB3-CR1 (paragraph 4-33),
and perform operational check.
b.
If no continuity, replace wire between TB1-14 (ANODE) and
ground TB, or notify maintenance supervisor.
Disconnect wire from TB1-15 (anode). Measure resistance between
Step 5.
TB1-15 (anode) and TB1-15 (CATHODE). See figures 4-20 and 4-21 for
TB location. Reconnect wire to TB1-15 (ANODE).
a. If resistance was between 170 and 270 ohms (normal), do
step 6.
b.
If resistance was not between 170 and 270 ohms, replace
resistor TB1-R1 (paragraph 4-33), and perform operational
check.
Step 6.
Remove battery charger access cover. Disconnect main harness
connector P5 from control panel connector J5. Check for continuitv
between the points listed below (see FO-4):
If no continuity,
Check continuity
replace wire no.
From
To
Q2B20
J5-12L
1M3(+)
Q1C20
J5-12R
1DS5(+)
Q1D20
TB1-15 (ANODE)
P5-12L
Q2A20
TB1-15 (CATHODE)
P5-12R
If no continuity, replace indicated wire.
a.
If all continuity checks good, check for short between TBl-15
b.
(CATHODE) and ground.
C.
Reconnect P5 to J5, and perform operational check.
4-33
