Section II. TOOL AND EQUIPMENT

TM 11-5895-1097-40

Table 3-3. Receiver Crystal Module Limits - Cont.

Module

Part No.

Act. Freq.

Limits

Module

Part No.

Act. Freq.

Limits

Marking

143.50

SM-D-706522-9

125.40

125.39750 -125.40250

144.00

SM-D-7065224

125.90

125.89749 -125.90251

143.60

SM-D-706522-8

125.50

125.49749 -125.50251

149.50

SM-D-706522-3

131.40

131.39738-31.402621

143.70

SM-D-706522-7

125.60

125.59749 -125 0251

150.20

SM-D-706522-2

132.10

132.09736- 132.10264

143.80

SM-D-706522-6

125.70

125.69749 -125.70251

150.80

SM-D706522-1

132.70

132.69735- 132.70265

143.90

SM-D-706522-5

125.80

125.79749 -125.80251

Section II. TOOL AND EQUIPMENT

3-7. Tool and Equipment Required

(3)

Repair Kit MK-772/U (NSN 5999-00-757-

The following list of tools and equipment are required to

7042).

perform general support maintenance on the TS3630/GRA1

(4) Signal Generator SG-1 112(V)2/U (NSN 6625-

14.

00- 500-6525).

a. Tools.

(5) Voltmeter, RF AN/URM-145 (NSN-6625-00-

(1) Tool Kit, Electronic Equipment TK-100/G (NSN

973- 3986).

5180-00-605-0079).

(2) Tool Kit, Electronic Equipment TK-105/G (NSN

3-8. Repair Parts.

5180-00-610-8177).

Repair parts are listed and illustrated in the repair parts and

b. Equipment.

special tools list (RPSTL) TM 115895109740P, covering

(1) Maintenance Kit MK-1752/GRA-114 (NSN

general support maintenance for this equipment. TM

5895-01-057-6263.

115895109720P will also be used where applicable.

(2) AN/USM-223 (NSN 6625-00-999-7465).

Section III. TROUBLESHOOTING

maintenance personnel with the information required to check

3-9. General Troubleshooting Information

and corrrelate all information from organizational maintenance

a. Troubleshooting at the general support maintenance

with the test equipment and tools available Perform the

category includes the techniques outlined for organizational

procedures contained in the troubleshooting tables in the order

maintenance and additional techniques required to isolate a

given. Do not proceed to the next action when the corrective

defective assembly and part. Paragraph 3-10 describes the

measures have already been taken to eliminate the trouble.

systematic procedure to be followed which will enable

(1) Defective material, such as piece parts,

maintenance personnel to isolate the cause of the trouble and

modules. or minor components, shall be recorded and

correct the fault.

identified by National stock number (NSN), inspected and

b. The first step is to trace the fault to a particular

verified as defective. All replaced equipment will be repaired,

module or assembly. This is called localization. Bench tests

or disposed of in accordance with AR 7551 and current

can be made by following the procedures in paragraph 3-6.

established procedures for general support.

c. The final step is to trace the fault to the defective part

(2) When replacing a part, make sure that the part

on an asssembly. This is called isolation.

is the same as the one being replaced. Refer to section IV

d. Localization and isolation of a fault are determined by

maintenance of test set, for instructions on assembly.

visual inspection, voltage measurements, and use of the

(3) When trouble has been localized to a stage,

troubleshooting charts. Visual inspection will locate many

either through performance of the tests given in your

faults without testing the circuits. All visual signs should be

troubleshooting charts, or other means, isolate the defective

observed and an attempt made to localize the fault.

part by measuring voltage at the test points and other points

NOTE

related to the stage suspected of being faulty.

In all tests the possibility of intermittent

WARNING

troubles should be investigated. Jarring

When troubleshooting this equipment, be

or tapping the equipment may expose

extremely careful. 120 volds AC is

this type of problem.

present in the power supply circuit.

3-10. Troubleshooting Procedures.

DEATH ON CONTACT or serious injury

a. General. The malfunction listed in tables 3-4 and 3-5

may result if safety precautions are not

are presumed to exist after all lower level troubleshooting

followed.

not

make

internal

procedures and corrective measures have been performed.

The tables provide general support

connections alone. Always have another

person to help in the case of an accident.

Always disconnect the ac source, and

ground the part with a shorting

3-11