TM 11-6130-392-34
Section V. DIRECT SUPPORT TESTING PROCEDURE
the result obtained in any test step; repeat the test
3-19. General
step.
Final testing of the Battery Charger PP-7286/U will
c. Perform the test procedures in the sequence
be performed by direct support maintenance per-
listed in table 3-5. To be acceptable, battery charger
sonnel. Test procedures contained in this section
must pass each test before being returned to users.
will determine whether the performance of equip-
If a malfunction occurs during performance testing;
ment, with components tested and replaced, is satis-
perform troubleshooting test procedure as outlined
factory for return to users.
in section III.
3-20. Performance Testing Procedure
CAUTION
a. Make sure that battery charger maintenance
If meter needle pegs during any portion of
has been completed, and equipment is ready for
following test, quickly set POWER switch
final performance testing.
to OFF and perform troubleshooting test
b. Make sure all controls are set accurately, when
procedure as outlined in section III.
performing final test procedures. If in doubt about
Table 3-5. Performance Test Procedures
Column 3
Column 2
Column 1
Reference, or Instruction
Acceptable Test Result
Test Procedure
(1) W i t h power cable connected and
POWER ON lamp lights.
battery charger prepared per para
tion.
No reading.
(2) Set CHANNEL SELECT switch to 1.
Set VOLTAGE TEST SELECT
switch to B1. Check panel meter.
(3) P r e s s V O L T A G E T E S T s w i t c h .
Panel meter reads more than 700 mA.
Display is 18.8.
Check Panel Meter reading.
(4) T u r n
SET CHARGE
TIME
thumbwheels to 18.8. Press START
TIME switch. Check CHARGE TIME
HOURS REMAINING
(5) Set CHANNEL SELECT switch to 1,
Reading is less than 15 mA (on 50 mA
scale), each of 5 channels.
all CURRENT SET switches to 50
mA and all FINE ADJ controls fully
counterclockwise.
Rotate CHAN-
NEL SELECT switch to each of 5
p o s i t i o n s in turn. Check current
reading.
All channels can be adjusted for 50 mA
(6) Set CHANNEL SELECT switch to 1.
Adjust channel 1 FINE ADJ control
meter reading.
for panel meter reading of 50 mA.
Repeat for channels 2,3,4 and 5.
a. Reading is less than or equal to 50 mA
(7) R e p e a t s t e p s (5) and (6) with
(on 200 mA scale), each of 5 channels.
CURRENT SET switches in 200 mA
b. All channels can be adjusted to 200 mA
position.
meter reading.
a. Reading is less than or equal to 200 mA
(8) Repeat steps (5) and (6) with
(on 700 mA scale), each of 5 channels.
CURRENT SET switches in 700 mA
b. All channels can be adjusted to 700 mA
position.
meter reading.
Display changed from 18.8 to 18.7 within
(9) Set all CURRENT SET switches to 50
limits.
mA and get stopwatch. Press START
T I M E switch. Record exact time
taken by CHARGE TIME HOURS
REMAINING display to change from
18.8 to 18.7. (Do not wait more than 7
minutes for change.) Limits are:
Low - 5 minutes, 42 seconds
High 6 minutes, 18 seconds
Change 1 3-21
