Icom IC-F21S service manual 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 CIRCUITS	4-3
	4-4	POWER SUPPLY CIRCUITS	4-3
	4-5	PORT ALLOCATIONS	4-4
SECTION	5	ADJUSTMENT PROCEDURES
	5-1	PREPARATION	5-1
	5-2	PLL ADJUSTMENT	5-4
	5-3	SOFTWARE ADJUSTMENT	5-5
SECTION	6	PARTS LIST
SECTION	7	MECHANICAL PARTS AND DISASSEMBLY
SECTION	8	SEMI-CONDUCTOR INFORMATION
SECTION	9	BOARD LAYOUTS
	9-1	MAIN UNIT	9-1
	9-2	SW-A AND SW-B UNITS	9-3
SECTION	10	BC-146 OPTIONAL DESKTOP CHARGER INFORMATION

10-1 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1 10-2 DISASSEMBLY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1 10-3 VOLTAGE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2 10-4 BOARD LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2

SECTION 11 BLOCK DIAGRAM

SECTION 12 VOLTAGE DIAGRAM

12-1	MAIN UNIT	.12-1
12-2	SW-A AND SW-B UNITS	.12-2