TM 11-6130-392-34
able channel(s), go to step b.
to table 3-3.
b. Determine if any channels, that had a meter
(2) If there is no meter reading; replace charg-
reading, could be adjusted for a 50 mA reading.
ing module (A6, A7, A8, A9, or A10) just installed
and replace fuse for faulty channel. Go to section V.
(1) If any of the channels could be adjusted for
a meter reading of 50 mA; go to step c.
l. Remove charging module (assemblies A6-A10)
for the faulty channel (fig. 3-2); replace with charg-
(2) If no channel could be adjusted for a meter
--
reading of 50 mA; go to step n.
ing module from a good channel.
c. Set POWER to OFF; position CHANNEL
m. Set POWER to ON; press START TIME
SELECT switch to channel that could not be ad-
switch and check panel meter.
justed for meter reading of 50 mA.
(1) If meter indicates a current reading; set
d. Remove charging module (assemblies A6-A10)
P O W E R to OFF, and replace charging module
removed in step l. Go to section V.
adjusted for a meter reading of 50 mA; replace it
(2) If meter does not indicate current flow; set
with a charging module from a channel that was ad-
POWER to OFF, discontinue testing and send bat-
justed for a 50 mA meter reading.
tery charger to depot.
n. Set POWER to OFF. Remove power supply
e. S e t P O W E R t o O N ; p r e s s S T A R T T I M E
assembly A11 (fig. 3-2) from battery charger. Refer
switch. Adjust FINE ADJ for this channel which
to paragraph 3-9b and put on extender board.
now has a good charging module.
(1) If FINE ADJ can now be adjusted to 50 mA
tive lead to negative terminal of capacitor C1 (fig.
m e t e r reading; set POWER to OFF, replace the
3-3). Connect positive lead of multimeter to A11-
faulty charging module (Section IV, para 3-14). Go
TP3.
to section V.
p. Set POWER to ON; check multimeter.
(2) If FINE ADJ cannot be adjusted to 50 mA
m e t e r reading; discontinue testing, send battery
(1) If meter reading is 9.5 0.5 volts; discon-
tinue testing, send battery charger to next higher
charger to next higher maintenance level.
maintenance level.
f. Set POWER to OFF. Set CHANNEL SELECT
switch to faulty channel, and remove fuse for same
(2) If meter reading is less than 9.5 0.5 volts;
set POWER switch to OFF and replace All (Section
faulty channel. Using multimeter; check fuse for
IV, para. 3-15). Go to section V.
Test 8. Power Supply Assembly (All) Test.
(1) If fuse is good; reinstall, and go to step l.
a. Set POWER to OFF, Remove charging circuit
(2) If fuse is faulty; go to step g .
assembly A9 (fig. 3-2) from battery charger. Refer
g. Set multimeter to 250 VDC scale. Connect
to paragraph 3-9b. and put on extender board.
negative () lead to negative () terminal of C1 (fig.
b. Set multimeter to 250 VDC scale. Connect
3-3). Connect positive (+) lead to A11-TP7 (fig. 3-4)
negative () lead to negative () terminal of filter
using extender board if necessary (para 3-9b.). Set
capacitor C1 (fig. 3-3). Connect positive (+) lead to
POWER to ON; check multimeter.
A9-TP2 (fig. 3-8) test point.
(1) If voltage is less than or equal to 100 VDC;
c. Set POWER to ON. Press START TIME
go to step h.
switch. Check multimeter.
(2) If voltage is more than 100 VDC; discon-
(1) If meter reading is less than 20 VDC or
tinue testing, send battery charger to next higher
more than 100 VDC; set POWER to OFF, discontin-
maintenance level.
u e testing, send battery charger to next higher
h. Remove charging module (A6, A7, A8, A9, or
maintenance level.
A10) for this faulty channel (fig. 3-2).
(2) If meter reading is more than 20 VDC but
less than 100 VDC; go to step d.
leads to negative (black) jack of same faulty channel
d. Move positive (+) lead on multimeter from
(1, 2, 3, 4, or 5). Connect other lead to exposed metal
A9-TP2 to A9-TP4. Set multimeter to 10 VDC scale
(for grounding) on chassis; check multimeter.
and check reading.
(1) If meter reading is 20 ohms or less; discon-
(1) If meter reading is 7.0 volts or more; go to
tinue testing, send battery charger to depot.
step e.
(2) If meter reading is greater than 20 ohms; go
to step j.
(2) If meter reading is less than 7.0 volts; go to
step g.
j. Replace bad fuse of this channel; reinstall
e. Set POWER to OFF. Remove fuses F1 through
charging module into its original location.
F5 (fig. 2-2) and check each for continuity with
k. Set POWER to ON; press START TIME
multimeter.
switch, and check panel meter.
(1) If any one fuse is good; discontinue testing,
(1) If meter indicates a current reading; return
3-14
