Table Of Contents - Icom IC-04A Service Manual

TABLE OF
CONTENTS
SECTION
1
SPECIFICATIONS
1-1
SECTION 2
OUTSIDE
AND
INSIDE
VIEWS
2-1~2
2-1
OUTSIDE VIEWS
2-1
2-2 INSIDE
VIEWS
2-2
SECTION 3
BLOCK DIAGRAM
3-1
SECTION
4
CIRCUIT DESCRIPTION
4-1~9
4-1
RECEIVER CIRCUIT
4-1
4-2
TRANSMITTER
CIRCUIT
4-2
4-3
PLL CIRCUIT
4-3
4-4
POWER
SUPPLY CIRCUIT
4-5
4-5
COMPARATOR, REDUCED VOLTAGE DETECTION CIRCUITS
4-5
4-6
LOGIC CIRCUIT
4-6
4-
7
OTHER
CIRCUITS
4-6
SECTION 5
MECHANICAL PARTS
AND
DISASSEMBLY
5-1-4
5-
1
REAR PANEL DISASSEMBLY
5-1
5-2
FRAME
DISASSEMBLY
5-1
5-3
SOLDER
SIDE
DISASSEMBLY
5-2
5-4
TOP PANEL DISASSEMBLY
5-3
5-5
HEATSINK DISASSEMBLY
5-3
5-6
SPEAKEY/MICROPHONE DISASSEMBLY
5-4
5-7
BOTTOM
UNIT
DISASSEMBLY
5-4
5-8
PTT PLATE
AND
PTT SEAL
DISASSEMBLY
5-4
5-
9
LOGIC UNIT
AND
LCD DISASSEMBLY
5-4
SECTION
6
MANTENANCE AND ADJUSTMENT
6-1-5
6-
1
MEASURING INSTRUMENTS
REQUIRED FOR
ADJUSTMENTS
6-1
6-2
CHECK THE
FUNDAMENTAL VOLTAGES
6-2
6-3 PLL
ADJUSTMENT
6-3
6-4
RECEIVER
ADJUSTMENT
6-3
6-5
TRANSMITTER
ADJUSTMENT
6-4
6-
6
SUBAUDIBLE TONE,
DTMF AND TONE
CALL
ADJUSTMENT
6-5
SECTION
7
BOARD LAYOUT
7-1-4
7-
1
MAIN
UNIT
7-1
7-2 PLL
UNITAND
VCO
UNIT
7-2
7-3
LOGIC UNIT
7-3
7-4
TONE
UNIT
7-4
7-
5
TONE CALL
UNIT
7-4
SECTION
8
SCHEMATIC DIAGRAM
8-1-4
8-
1
MAIN
UNIT
8-1
8-2 PLL
UNIT
8-2
8-3
LOGIC UNIT
8-3
8-4
TONE
UNIT
8-4
8-
5
TONE CALL
UNIT
8-4
SECTION 9
TROUBLESHOOTING
9-1-4
9-
1
NOPOWER
9-1
9-2 PLL
FAILURE
9-2
9-3
NO RECEPTION
9-3
9-4
NO TRANSMIT
RF
POWER
9-4
SECTION
10
PARTS
LIST
10-1-8
SECTION
1 1
1C.
TRANSISTOR
AND
PIN
CONNECTIONS
11-1-3
The
SCHEMATIC DIAGRAM
is
attached
at
the
end
of this
manual