Table 3-3. Troubleshooting Test Procedures

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

a. Perform test procedures as shown in table 3-3,

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. Go to Test 1, para 3-12.

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

b. Go to Test 2, para 3-12.

switch to ON.

light.

c. Replace A6 per Section IV, para 3-14

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 . . . . . . . . . . . . . . . . .

a. Go to Test 4, para 3-12.

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-

a. Go to Test 5, para 3-12.

wheels to 18.8. Press START TIME

bers displayed.

b. No digits displayed . . . . . . . . . . . . . . . .

b. Go to Test 6, para 3-12.

switch. Check CHARGE TIME

HOURS REMAINING

(10) Set CHANNEL SELECT switch to 1.

a. Go to Test 7, para 3-12.

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

b. Go to Test 8, para 3-12.

for channels 2, 3, 4, and 5. Check panel

meter reading.

3-4