TM 11-6625-2631-14
(1) With the unit disassembled, as in
e. Battery Compartments. Two battery com-
partments are used for testing the SDU-5 / E and
p a r a g r a p h a., remove three screws (1), washers
K 3 0 8 A batteries, items 9 and 14, respectively.
(1A, 22A), and nuts (22).
E a c h is attached by "pop" rivets and is to be
( 2 ) Tag and unsolder the two leads to the
meter terminals.
r e m o v e d using the same type of procedures as
described for the circuit board (para c).
(3) Install the meter by attaching to the cover
with three screws (1), washers (1A, 22A) and nuts
j. Meter Removal and Replacement.
(22 ). Solder the two leads removed in step (2) to
NOTE
Meter is not an authorised repair part.
the respective meter terminals.
Section III. TESTING PROCEDURES
6 - 1 0 . P e r f o r m a n c e Tests
6 - 8 . General
a . Test Equipment and Materials Required.
a. This section describes step-by-step bench test
procedures for Test Set, Battery TS-2530 / UR, to
(1) Multimeter AN / USM-223.
( 2 ) Variable voltage dc Power Supply PP-
be performed at the general support maintenance
3940 / G or equivalent.
category. The bench tests are performed to
b. Test Connections and Conditions. A typical
d e t e r m i n e the effectiveness of equipment main-
test setup is shown in figure 6-3. Note that in each
t e n a n c e and to indicate the expected level of
test, the power supply output must be set to the
performance of the teat set.
required test value before the test connections are
b. The perform ante tests are to be performed
made to the test connector on the unit.
whenever indicated by the following:
c. Procedure. Perform the steps listed in table 6-
(1) Following installation, to determine if the
3.
test set is functioning correctly after shipment or
storage.
(2) When the teat set is suspected of improper
o p e r a t i o n , as indicated by perform ante during
actual operation.
( 3 ) Whenever components are repaired or
replaced, or after the test set is reassembled.
(4) During scheduled maintenance, to verify
e q u i p m e n t operability.
Detailed operation of test equipment is covered in
manuals separately provided for those equipments.
T h e test parameters given herein are based on
readings obtained on the test set panel meter, and
the monitoring test equipment.
step
Test equipment
No.
Test procedure
Performance standard
control settings
1
Connect power supply positive and
Test set meter reads 0.98
1 scale
Power supply set to 15.7 volts:
negative output to pins A and B,
division.
AN / USM-223 on appropriate
respectively, of the URC-10 cable
range.
connector.
Connect power supply positive and
Test set meter roads 0.98
1 scale
2
Disconnect power supply and set
negative outputs, respectively, to
division.
output to 13.5 volts.
the male (+) and female (--)
contacts of the URT-21 connector.
3
Test set meter reads 0.98
1 scale
Disconnect power supply and set
Connect power supply positive and
negative outputs, respectively, to
division.
output to 5.7 volts; AN/ USM-
223 on appropriate range.
the brass threaded contact (+)
and center contact (--) of the
SDU-5 / E receptacle.
Disconnect test equipment.
NA
4
NA
