Kenwood TM-321A - Service Manual

220MHz
FM
TRANSCEIVER
KENWOOD
TM-821A
SERVICE MANUAL
(C:1987-8 PRINTED IN JAPAN
B51-3305-00
(O)
1196
Knob
(Button)
(K29-3058-04)
Metallic cabinet
(Upper)
(A01-1021-03)
BRY¥an
Frelds
Knob
(Button)
(K27-0496-04)
x2
BR
Yond
Panel
ass'y
Knob
(VOL,
SQL)
Microphone
(A20-2629-02)
(K29-3061-04)
x2
(T91-0359-05)
VFO/M
M N MHz
vou
|
Low
KENWOOD0720mHe
FM TRANSCEIVER
TM
321A
7
4
2249809
sol
we
OWN
uP
a
SHIFT
REV
SCAN
crcss
TONE
Knob
(Main)
Knob
(Button)
(K29-3060-04)
(K29-3070-04)
Knob
(Button)
Knob
(Button)
(K28-3069-04)
(K29-3068-04)
Knob
(Button)
Knob
(Button)
(K29-3065-04)
(K29-3067-04)
CIRCUIT DESCRIPTION
SEMICONDUCTOR
DATA
DESCRIPTION
OF ELEMENTS
PARTS
LIST
EXPLODED
VIEW
PACKING
DISASSEMBLY
ADJUSTMENT
PC BOARD VIEWS
LCD
ASS'Y
(B38-0303-05)
VCO
(X58-3090-1
1)
DRIVE
(X59
312011)
APC
(X59-3130-00)
CONTENTS
2
12
IF
(X59-31 40-00)
SQL
(X59-3150-00)
MIC
(X59-3160-00)
VOL
(X&9-3170-00)
FINAL UNIT
(X45-1360-11)
TX-RX
UNIT
(X57-3170-10)
CONTROL
UNIT
(X53-3040-13)
SCHEMATIC DIAGRAM
LEVEL
DIAGRAM
BLOCK DIAGRAM
TERMINAL FUNCTIONS
TSU-5
(CTCSS
UNIT)
SPECIFICATIONS
40
40
40
40
41
42
44
45
49
50
51
52
BACK COVER
13
16
30
31
32
33
39
39
39
40
220MHz
FM
TRANSCEIVER
KENWOOD
TM-821A
SERVICE MANUAL
(C:1987-8 PRINTED IN JAPAN
B51-3305-00
(O)
1196
Knob
(Button)
(K29-3058-04)
Metallic cabinet
(Upper)
(A01-1021-03)
BRY¥an
Frelds
Knob
(Button)
(K27-0496-04)
x2
BR
Yond
Panel
ass'y
Knob
(VOL,
SQL)
Microphone
(A20-2629-02)
(K29-3061-04)
x2
(T91-0359-05)
VFO/M
M N MHz
vou
|
Low
KENWOOD0720mHe
FM TRANSCEIVER
TM
321A
7
4
2249809
sol
we
OWN
uP
a
SHIFT
REV
SCAN
crcss
TONE
Knob
(Main)
Knob
(Button)
(K29-3060-04)
(K29-3070-04)
Knob
(Button)
Knob
(Button)
(K28-3069-04)
(K29-3068-04)
Knob
(Button)
Knob
(Button)
(K29-3065-04)
(K29-3067-04)
CIRCUIT DESCRIPTION
SEMICONDUCTOR
DATA
DESCRIPTION
OF ELEMENTS
PARTS
LIST
EXPLODED
VIEW
PACKING
DISASSEMBLY
ADJUSTMENT
PC BOARD VIEWS
LCD
ASS'Y
(B38-0303-05)
VCO
(X58-3090-1
1)
DRIVE
(X59
312011)
APC
(X59-3130-00)
CONTENTS
2
12
IF
(X59-31 40-00)
SQL
(X59-3150-00)
MIC
(X59-3160-00)
VOL
(X&9-3170-00)
FINAL UNIT
(X45-1360-11)
TX-RX
UNIT
(X57-3170-10)
CONTROL
UNIT
(X53-3040-13)
SCHEMATIC DIAGRAM
LEVEL
DIAGRAM
BLOCK DIAGRAM
TERMINAL FUNCTIONS
TSU-5
(CTCSS
UNIT)
SPECIFICATIONS
40
40
40
40
41
42
44
45
49
50
51
52
BACK COVER
13
16
30
31
32
33
39
39
39
40

Kenwood TM-321A Specifications

Operating Environment

operating temperature range	-20°C to +60°C
frequency stability	Better than 10
frequency range	220 to 225MHz

Power

power requirements	13.8V DC ±15%
transmit mode current drain	6.5A
receive mode current drain	0.4A

Audio

audio distortion	Less than 3%
microphone impedance	500 to 600 ohms
audio output	More than 2W across 8 ohms load

Weight and Dimensions

dimensions	141 x 42 x 193 mm
weight	1.2 kg