TM 55-1730-229-12
AG 320A0-OMM-000
TO 35C2-3-473-1
TM 1730-12/1
(3) If component to be replaced is
on TB2 (10 and 11) or TB3 (4 and 5), re-
PONENTS.
move battery charger access panel (6,
Remove all rings, watches and other
NOTE
jewelry when performing maintenance
on this equipment.
Removal and installation proce-
dures are the same for all elec-
NOTE
trical components installed on
terminal boards. Diode TB1-CR1
See table 4-2, Malfunctions 2
(3, figure 4-21) is illustrated.
(step 3), 8 (steps 4 and 5), 64,
and 82 for test.
(4) Remove two terminal screws (1)
and diode (3).
a.
Inspect .
(See figure 4-20.)
c. Install Terminal Board Electri-
(1). Disconnect battery.
cal Components. (See figure 4-21.)
(2) Lower control panel (paragraph
(1) Shape leads of replacement
component to match removed component.
cover (5, figure 4-5).
(2) Install replacement component
(3) See figure 4-20. Inspect all
on terminal board and attach with two
terminal boards (2, 3, 4, 5, 8, 9, 10
screws (1).
Diodes must be installed
and 11) for obvious damage.
with cathode toward terminal board
identified as cathode.
(4) Replace any cracked or broken
terminal board.
NOTE
(5) Inspect terminal boards for
The cathode of the diodes may be
security of installation.
Tighten
identified by a black band (11) or
mounting screws (1 and 7) as required.
a bar (12) at the end of an arrow.
If markings are missing or not
(6) Check that all terminal board
legible, measure resistance be-
components are installed (see figures
tween diode leads in both direc-
4-21 through 4-24).
tions before installation. The
diode resistance is near 0 when
the multimeter negative lead is on
b. Remove Terminal Board Electrical
the diode cathode.
Components. (See figures 4-20 through
4-23.)
d. Remove Resistor R6. (See fig-
ure 4-20.)
(1) Disconnect battery.
NOTE
(2) If component to be removed is
on TB1 (8 and 9, figure 4-20), lower
See table 4-2, Malfunction 62
control panel (paragraph 4-24). Discon-
(step 12) for test.
nect control panel support cable and
lower control panel onto access door.
(1) If necessary for access to nut
(12), remove battery (paragraph 4-25.a).
(2) Remove battery charger access
cover (5, figure 4-5).
