TM 11-6130-392-34
f. Set INPUT VOLTAGE switch (11) to l15 VAC
3, opposite the malfunction indication in column 2, to
position.
isolate faults and to make required corrections.
WARNING
CAUTION
High voltage will be present on exposed
If meter needle pegs during steps 1
terminals with interlock switch, S6 over-
through 5 or step 8 of the following table,
ridden. Use extreme care troubleshooting
quickly set POWER switch to OFF and per-
t h e battery charger when the cover is
form appropriate instruction in Column 3.
removed and power applied.
WARNING
g. Connect power cable (12) to 115 VAC, 50 or 60
Whenever the test procedure indicates that
Hz source power.
a printed wiring assembly is to be replaced
h. Set CHANNEL SELECT switch to position 1.
o r removed, set the POWER switch to
OFF. Remove the power cable from the
3-11. Troubleshooting Test Procedure
p o w e r source. A f t e r the replacement is
m a d e , reconnect the power cable to the
in the sequence listed in column 1, to troubleshoot
power source and proceed as directed by
Battery Charger PP-7286/U.
the test procedure.
b. Follow the instruction or reference in column
Table 3-3. Troubleshooting Test Procedures
Column 1
Column 2
Column 3
Test Procedure
Reference, or Instruction
Malfunction Indication
a. POWER switch trips off . . . . . . . . . . . .
(1) With power cable connected to bat-
b. POWER ON lamp does not
tery charger (para. 3-10), set POWER
switch to ON.
light.
c. Meter needle pegs . . . . . . . . . . . . . . . . .
POWER ON lamp should light.
and retest per Table 3-3.
(2) Set CHANNEL SELECT switch to
Meter needle pegs . . . . . . . . . . . . . . . . . . . .
Replace A7 per Section IV, para 3-14 and
position 2.
retest per Table 3-3.
(3) Set CHANNEL SELECT switch to
Meter needle pegs . . . . . . . . . . . . . . . . . . . .
Replace A8 per Section IV, para 3-14 and
position 3.
retest per Table 3-3.
(4) Set CHANNEL SELECT switch to
Meter needle pegs . . . . . . . . . . . . . . . . . . . .
Replace A9 per section IV, para 3-14 and
position 4.
retest per Table 3-3.
(5) Set CHANNEL SELECT switch to
Meter needle pegs . . . . . . . . . . . . . . . . . . . .
Replace A10 per section IV, para 3-14 and
position 5.
retest per Table 3-3.
(6) S e t V O L T A G E T E S T S E L E C T
Go to Test 3, para 3-12.
Current flow indicated . . . . . . . . . . . . . . . .
switch to B1. Check panel meter
reading.
(7) P r e s s V O L T A G E T E S T s w i t c h .
a. Less than 700 mA . . . . . . . . . . . . . . . . .
b. No reading . . . . . . . . . . . . . . . . . . . . . . .
Check panel meter reading.
b. Send to next higher maintenance level.
(8) Turn SET CHARGE. Time thumb-
Meter needle pegs at one or more positions
Go to Test 11, para 3-12.
wheels to 10.0. Press START TIME
of CHANNEL SELECT switch.
s w i t c h . Turn CHANNEL SELECT
switch through all 5 positions and
observe panel meter.
(9) Turn SET CHARGE TIME thumb-
a. At least one module has wrong num-
wheels to 18.8. Press START TIME
bers displayed.
b. No digits displayed . . . . . . . . . . . . . . . .
switch. Check CHARGE TIME
HOURS REMAINING
(10) Set CHANNEL SELECT switch to 1.
a. 50 mA reading not shown on all chan-
Set Channel 1 CURRENT SET switch
nels, but there is a lesser reading on at
and adjust FINE ADJ control for 50
least one channel.
b. No reading on any channel . . . . . . . . . .
mA reading on panel meter. Repeat
for channels 2, 3, 4, and 5. Check panel
meter reading.
3-4
