TM 11-6130-381-14
5-5. Dc Resistance of Chasis Mounted Com-
Test prods
Resistance
ponents
(ohms)
Negative
Positive
NOTE
P e r f o r m the resistance measumments of
1.6
C
D
B
1.6
steps a., b., and c., with power discon-
D
H
100
D
n e c t e d , the battery charger subassembly
F
100
D
removed from the case (para 5-7), and the
Infinity
J
D
control circuit card assembly removed from
Infinity
A
D
the battery charger subassembly (para
T
1.6
R
v
1.6
R
Infinity
K
R
a. Check the resistance of the following com-
Infinity
z
R
p o n e n t s . The measured values must be in ac-
N
Infinity
R
c o r d a n c e with the specified values. (Refer to
3.6
R
s
*R
Infinity
L
E
Less than 1
R
Resistance
x
Less than l
R
(ohms)
Component
I
R
3.5
M
4220
R6001
1,5
KK
HH
4220
R6002
1.6
JJ
HH
R6003
0.1
FF
100
HH
0.1
R6004
100
cc
HH
20
R6006
Infinity
Y
HH
20
R6006
Infinity
HH
LL
20
R6007
*If resistance reading is observed, reverse meter leads.
20
R6008
Check that the resistance across P6001 (black
C.
t o white), with the interlock switch (S6005)
b. P e r f o r m t h e r e s i s t a n c e m e a s u r e m e n t s a t
depressed and AC POWER switch set to ON, is
J6003 on the battery charger chassis in accordance
1.2 ohms (SELECTOR SWITCH set at 115V) and
with t h e following chart. The readings obtained
4.0 ohms (SELECTOR switch set at 230V).
m u s t be in accordance with the specified values.
Section III. MAINTENANCE
5-7. Removal of Battery Charger Subassembly
5-6. General
Remove the battery charger subassembly from its
a . Procedures contained in this section are for
case as follows:
t h o s e subassemblies and parts of the battery
a. Press the pressure relief valve button.
charger designated for direct support maintenance.
b. Unlatch the six latches and open the cover of
These procedures include dismantling instructions,
the case.
parts replacement techniques, precautions to be
c . Turn the case on its side so that the front
observed during replacement, application of
panel of the battery charger and the 230 vac
materials utilized to accomplish replacement, and
conversion assembly are accessible for removal.
reassembly instructions. Refer to the parts location
d. Uncoil the input power cable from inside the
d i a g r a m s (fig. 5-1 through 5-3) and schematic
cover of the case.
diagram (fig. FO-1) as required to accomplish the
e . Remove the ten mounting screws from the
maintenance tasks contained herein. Upon
front panel.
r e p l a c e m e n t of any faulty subassembly or part,
f. Grasp the handles on the front panel of the
t e s t the battery charger is accordance with the
battery charger subassembly and carefully pull the
procedures of Section IV of this chapter.
chassis out of the case.
6. Upon removal of the battery charger
s u b a s s e m b l y from its case (para 5-7), the front
5-8. Detaching Battery Charger Front Panel
p a n e l detached from the chassis (para 5-8), and
NOTE
the control circuit card assembly removed from its
Because of the front panel-to-chassis
socket connector (para 5-9), all parts designatad
c a b l i n g , the front panel cannot be com-
for direct support of the battery charger are easily
pletely disconnected from the chassis
a c c e s s i b l e for repair or replacement. Refer to
w i t h o u t disconnecting the cabling ter-
minations: h o w e v e r to reach the com-
conversion assembly.
5-7
