Section IV ALINEMENT PROCEDURES

TM 11-6625-2976-40

Section IV ALINEMENT PROCEDURES

Subject

Para

Page

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-8

2-39

LOC Mode Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-9

2-39

GS Mode Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-10

2-42

VOR Mode Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-11

2-45

MB Mode Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-12

2-50

Operating Voltage Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-13

2-52

VOR Bearing Selector Control Alinement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-55

2-14

ATTEN Control Alinement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

2-57

2-8. GENERAL.

Alinement of circuit card assembly A6 at the general support level consists of partial electronic

adjustments of specific mode sections. These adjustments maybe performed individually or as a

group, in any order.

Complete alinement of circuit card assembly A6 as well as alinement of the five rf modules are per-

formed at the next higher Ievel of maintenance.

Three of the test set front panel controls (bearing selector knob and two ATTEN control knobs) may be

alined electromechanically. These procedures appear in the last two paragraphs of this section.

PRELIMINARY EQUIPMENT SETUP

Before beginning any alinement procedure, perform the preliminary equipment setup beginning on

page 2-4.

Test equipment is listed in each procedure as required.

Tool Kit, Electronic Equipment TK-101/G contains all required tools.

No procedure requires more than one technician.

2-9. LOC MODE ADJUSTMENT.

TEST EQUIPMENT REQUIRED

Digital Voltmeter, HP 3490A

Dual-Voit Power Supply, HP PS503A

Modulation Analyzer, HP 8901A

EQUIPMENT SETUP

Connect voltmeter to A6J2 as indicated in the following diagram.

NOTE

Dual-volt power supply connection shown in preliminary procedure (pages 2-5

and 2-6).

2-39