CHAPTER 4. DIRECT SUPPORT PERFORMANCE AND TROUBLESHOOTING PROCEDURES USING TEST SET AN/GRM-114A

TM 11-5820-401-34-3/0967-LP-432-3060

CHAPTER 4

DIRECT SUPPORT PERFORMANCE AND TROUBLESHOOTING

PROCEDURES USING TEST SET AN/GRM-114A

Section

Subject

Page

Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Troubleshooting . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

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Ill

Alinement and Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

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OVERVIEW

This chapter contains performance tests, troubleshooting, and alinement procedures at the direct

support level usingTestSet AN/GRM-114A.

The performance tests are diagnostic in purpose. They should be used to verify that an R-442/VRCis

operating properly or to point out the existence of faults.

If failure to meet a performance test standard confirms that a fault is present in the unit under test, the

test procedure will refer you to a specific chart in the troubleshooting section. The troubleshooting

charts are designed to isolate the faults noted in the performance tests. They will guide you to the

source of defects and/or misalinements.

Once it has identified the source of a fault, a troubleshooting chart will refer you to the appropriate

repair/replacement instructions or alinement procedure. Because each stage of the receiver

depends upon its other stages for overall operating efficiency, the replacement, repair, or

realinement of even one component could alter the signals enough to create the need for other

real inements. Therefore, after making any alterations in the R-442/VRC, do all the performance

tests, even those you have done already.

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