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Icom IC-720A Service Manual

Icom IC-720A
124 pages
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Table of Contents

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Icom IC-720A Specifications

General IconGeneral
BrandIcom
ModelIC-720A
CategoryTransceiver
LanguageEnglish

Summary

SECTION 1 SPECIFICATIONS

SECTION 2 OPERATING CONTROLS

2-1 FRONT PANELS

Details of the front panel controls and indicators.

SECTION 3 CIRCUIT DESCRIPTION

3-4 PLL (PHASE LOCKED LOOP) UNIT

Description of the PLL unit's function.

SECTION 8 MAINTENANCE AND ADJUSTMENT

8-1 MEASURING INSTRUMENTS REQUIRED FOR ADJUSTMENT

List of instruments needed for adjustments.

8-2 PLL ADJUSTMENT

Procedures for adjusting the PLL unit.

8-4 TRANSMITTER ADJUSTMENT

Procedures for adjusting the transmitter.

8-5 RECEIVER ADJUSTMENT

Procedures for adjusting the receiver.

SECTION 9 TROUBLESHOOTING

SECTION 11 IC SPECIFICATIONS

TC-9123P (FM/AM SYNTHESIZER TUNER PLL)

Pin connection and block diagram for TC-9123P IC.

µPD549C (PROGRAMMABLE DISPLAY CONTROLLER)

Pin connection and block diagram for µPD549C IC.

SCHEMATIC DIAGRAM

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