TM 11-6625-2709-40
REPAIR AND ALIGNMENT
Section I. REPAIRS
3-1. General Parts Replacement Techniques.
( 3 ) Disconnect power cable from chassis.
The following general precautions should be
Note: To allow enough slack to conveniently work on the test
set, the pendant cables may be pulled through the porthole in the
observed when replacing parts in this equipment.
bottom of test set.
b. Removal of Control Unit.
solder quickly to allow as little heat conduction as
possible. Whenever wiring permits, use a heat sink
(1) Loosen the four Dzus fasteners.
(such as long-nosed pliers) between the solder joint
and the component. Use approximately the same
(2) Pull the control unit away from test set
length and dress of leads as used originally.
front panel.
b. Use a pencil-type iron with a 25-watt maximum
(3) Disconnect cable attached to control unit.
capacity. If the iron must be used with ac, use an
c. Disassembly of Control Unit. Refer to TM 11-
Check soldering irons for shorts to the iron tip before
5826-226-34 for disassembly procedures of Radio Set
using.
Control C-6873B/ARN-82.
c. Whenever an electrical part such as a resistor or
d. Removal of OBS Indicator.
diode is to be removed, note the exact position of the
component before removing it. Replace the compo-
(1) Remove the four screws that hold OBS in.
nent in the same position.
dicator to test set front panel.
3-2.Removal and Replacement Techniques.
(2) Pull the OBS indicator away from test set
front panel.
The procedures for removal and disassembly of the
(3) Disconnect cable attached to OBS indicator.
T h e corresponding replacement, reassembly, and
e. Disassimbly of OBS Indicator. Refer to TM 11-
The procedures for disassembly of the aid box are
5826-226-34 for disassembly procedures of Course In-
dicator ID-1347C/ARN-82.
reassembly techniques are described in paragraph
f. Removal of RMI.
(1) Remove the four screws that hold RMI to
test set front panel.
3-3. Removal and Disassembly Techniques for
Radio Test Set TS-2500B/ARM-92.
(2) Pull RMI away from test set front panel.
a. Removal of Test Set Front Panel.
(3) Disconnect cable attached to RMI.
(1) Remove the 7 screws from perimeter of
g. Diassimbly of RMI. Refer to TM 11-5826-211-50
front panel.
for disassembly procedures for RMI Indicator ID-
250A/ARN.
( 2 ) Lift front panel away from test set.