Table Of Contents - Icom IC-A23 Service Manual

Air band fm transceiver

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Instruction manual (39 pages)

Instruction manual (40 pages)

Schematic diagrams (2 pages)

Table Of Contents

Table of Contents

SECTION 1

SPECIFICATIONS

SECTION 2

INSIDE VIEWS

SECTION 3

DISASSEMBLY INSTRUCTIONS

SECTION 4

CIRCUIT DESCRIPTION

4 - 1

RECEIVER CIRCUITS ................................................................................................................... 4 - 1

4 - 2

TRANSMITTER CIRCUITS ............................................................................................................ 4 - 2

4 - 3

PLL CIRCUIT ................................................................................................................................. 4 - 3

4 - 4

POWER SUPPLY CIRCUITS ......................................................................................................... 4 - 4

4 - 5

CPU PORT ALLOCATIONS ........................................................................................................... 4 - 5

SECTION 5

ADJUSTMENT PROCEDURES

5 - 1

PREPARATION ............................................................................................................................... 5 - 1

5 - 2

PLL ADJUSTMENT ......................................................................................................................... 5 - 2

5 - 3

TRIMMER ADJUSTMENT .............................................................................................................. 5 - 3

5 - 4

RECEIVER ADJUSTMENT............................................................................................................. 5 - 7

SECTION 6

PARTS LIST

SECTION 7

MECHANICAL PARTS AND DISASSEMBLY

SECTION 8

SEMI-CONDUCTOR INFORMATION

SECTION 9

BOARD LAYOUTS

9 - 1

LOGIC UNIT ................................................................................................................................... 9 - 1

9 - 2

RF UNIT ......................................................................................................................................... 9 - 3

SECTION 10

BLOCK DIAGRAM

SECTION 11

VOLTAGE DIAGRAM

11 - 1

LOGIC UNIT ................................................................................................................................. 11 - 1

11 - 2

RF UNIT ....................................................................................................................................... 11 - 2