Section 5. MAINTENANCE - TM-11-5820-918-130067

TM 11-5820-918-13

SECTION 5

MAINTENANCE

5-1. INTRODUCTION

5-2. This section provides maintenance and service information for the TCS-4B trans-

mitter. Included are tables of recommended test equipment, a preventive maintenance

schedule, corrective maintenance procedures, and performance verification data. An

understanding of the theory of operation from Section 4 is required for troubleshoot-

ing and repairing the equipment.

TEST EQUIPMENT

5-3.

5-4. Recommended test equipment for performance tests and troubleshooting is listed

in table 5-1. Other test instruments may be used if their performance is equivalent

to those listed. If a test measurement is made which is outside the acceptable range,

operation of the test equipment should first be verified before assuming malfunction

of the equipment under test.

Table 5-1.

Test Equipment Required

Item

Recommended manufacturer and type

Tektronix 455 (or 465)

Oscilloscope

Frequency Counter

Hewlett Packard 5300B

Multimeter

Simpson 460

Termination, 2 watts

Microlab FXR TA - 5MN

Attenuator, 20 dB

Tektronix 011-0059-02

Bird Electronic Corp. 6155

RF Wattmeter

Hewlett Packard 141T

Spectrum Analyzer

with IF Section

Hewlett Packard 8552B

RF Section

Hewlett Packard 8553B

Power Supply

Lambda LL-903-0V, or

(35VDC Lab type)

Lambda LP-522-FM, or

HP 6200B

PREVENTIVE

MAINTENANCE

5-5.

5-6. Table 5-2 provides a list of recommended preventive maintenance procedures.

To assist in obtaining long-term trouble-free operation of the transmitter, the pro-

cedures should be adhered to as closely as possible. Marginal operation of any unit

checked should be noted and carefully re-examined at the next maintenance period.

5-1