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Kenwood TM-732A Service Manual

Kenwood TM-732A
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144/440MHz
FM
DUAL
BANDER
SERVICE
MANUAL
TM-732A/E
KENWOOD
©
1991-11
PRINTED
IN
JAPAN
B51-8144-00(O)
1740
Knob
(VFO)
(K27-3124-03)
Metallic
cabinet
(BOTTOM)
(A01-2051-13)
Knob
(MAIN)
(K29-3156-04)
CIRCUIT
DESCRIPTION
2
SEMICONDUCTOR
DATA..
18
DESCRIPTION
ОҒ
COMPONENTS
..
22
MODIFICATION
--
26
PARTS
LIST
...
27
EXPLODED
VIEW
--
45
РАСКІМС
-
47
ADJUSTMENT...
48
TERMINAL
FUNCTIONS
...........
.
56°
PC
BOARD
VIEWS/CIRCUIT
DIAGRAM
144MHz
TX-RX
UNIT
(X57-400X-XX)
(А/4).......
57
430MHz
TX-RX
UNIT
(X57-400X-XX)
(B/4)
.......
62
Knob
(CALL)
(K27-3120-04)
x
6
-
CONTENTS
Microphone
(T91-0516-05)
M,M2
(T91-0517-05)
K,P,M3
(T91-0521-05)
E,E2,E3
Panel
(A62-0174-03)
K,P,M,M2,M3
(A62-0175-03)
E,E2,E3
Knob
(POWER)
(K27-3121-04)
Knob
(LOW)
(K27-3122-04)
Knob
(VOL)
Knob
(SEL)
(K29-4575-04)
x
2
(K27-3123-04)
Knob
(SQL)
(K29-4576-04)
x
2
CONTROL
UNIT
(X57-400X-XX)
(С/4)...
VOLUME
UNIT
(X57-400X-XX)
(0/4)
....
LCD
ASSY
(B38-03XX-15)
..
SCHEMATIC
DIAGRAM
BLOCK
DIAGRAM
.
LEVEL
DIAGRAM
..
MC-45
(MULTIFUNCTION
MICROPHONE)
.
MC-45DM
(MULTI
FUNCTION
MICROPHONE
WITH
AUTOPACH
)
..78
PG-4K/L
(PANEL
SEPARATE
KIT
К
:
4M,L
:
7M)
TSU-7
(CTCSS
UNIT)
SPECIFICATIONS
.............
1010
1++

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Kenwood TM-732A Specifications

General IconGeneral
ModeFM
Supply13.8V DC
Antenna Impedance50 Ohms
Weight1.2 kg
Frequency Range144-148 MHz, 430-450 MHz
Channel Step5, 10 kHz
Power Supply13.8V DC
Channels200 (100 VHF, 100 UHF)

Summary

CIRCUIT DESCRIPTION

Outline

Provides an overview of the TM-732A/E transceiver's features and design.

Features

Lists the key features and capabilities of the dual-band transceiver.

Accessories

Lists the standard accessories included with the transceiver.

CIRCUIT DESCRIPTION

Frequency Configuration

Explains how the transceiver handles frequency reception and synthesis.

CIRCUIT DESCRIPTION

144MHz Band Transmit Circuit

Details the transmit circuit for the 144MHz band.

430MHz Band Transmit Circuit

Details the transmit circuit for the 430MHz band.

CIRCUIT DESCRIPTION

144MHz Band Receive Circuit

Explains the receive circuit for the 144MHz band.

430MHz Band Receive Circuit

Explains the receive circuit for the 430MHz band.

CIRCUIT DESCRIPTION

144MHz Band Sub Receive Circuit

Details the sub-receive circuit for the 144MHz band.

430MHz Band Sub Receive Circuit

Details the sub-receive circuit for the 430MHz band.

CIRCUIT DESCRIPTION

Squelch Circuit

Explains the operation of the squelch circuit.

144MHz Band Shift Register Circuit

Describes the shift register circuit for the 144MHz band.

CIRCUIT DESCRIPTION

SQL Circuit

Explains the voltage output variation of the SQL circuit.

AF Signal System

Outlines the AF signal path from detection to audio output.

CIRCUIT DESCRIPTION

Digital Control Unit

Explains the functions of the digital control unit.

Speaker switching circuit

Describes how audio signals are routed to different speakers.

CIRCUIT DESCRIPTION

DTMF Encode/Decode Circuit

Explains the DTMF encoding and decoding functions.

Analog Signal Switching Circuit

Describes how analog signals are switched.

CIRCUIT DESCRIPTION

Reset and Backup Circuits

Explains the power-on reset and backup operation circuits.

Microphone Amplifier Circuit

Details the circuit for amplifying microphone signals.

CIRCUIT DESCRIPTION

Panel Unit

Outlines the functions of the panel unit microprocessor.

Display Circuit

Explains the LCD display driving circuit.

CIRCUIT DESCRIPTION

430MHz Band PLL Synthesizer

Explains the PLL synthesizer for the 430MHz band.

144MHz Band PLL Synthesizer

Explains the PLL synthesizer for the 144MHz band.

CIRCUIT DESCRIPTION

I/O Port Specifications

Lists the specifications for the transceiver's I/O ports.

CIRCUIT DESCRIPTION

PLL M56760FP (TX-RX UNIT : IC9, 207 internal IC)

Explains the PLL IC's operational modes.

Shift register BU4094BF (TX-RX UNIT : IC5) : VHF squelch

Details VHF squelch shift register functions.

SEMICONDUCTOR DATA

Final Module : M57788MR (TX-RX Unit IC501)

Provides equivalent circuit and electrical characteristics of the final module.

Final Module : S-AV17 (TX-RX Unit IC502)

Provides equivalent circuit and electrical characteristics of another final module.

SEMICONDUCTOR DATA

Drive HIC : KCB11 (TX-RX Unit IC10)

Shows the circuit diagram for the drive HIC KCB11.

80RF HIC : KCB13 (TX-RX Unit IC202)

Shows the circuit diagram for the 80RF HIC KCB13.

SEMICONDUCTOR DATA

Drive HIC : KCB14 (TX-RX Unit IC209)

Shows the circuit diagram for the drive HIC KCB14.

AF IF HIC : KCD05 (TX-RX Unit IC2)

Shows the circuit diagram for the AF IF HIC KCD05.

SEMICONDUCTOR DATA

FM IF HIC : KCD04 (TX-RX Unit IC1, 201)

Shows the circuit diagram for the FM IF HIC KCD04.

DESCRIPTION OF COMPONENTS

TX-RX UNIT (X57-400X-XX) 0-11: K,P 0-21: M,M2,M3 2-71: E,E2,E3

Lists components (Q1-Q14) and their functions for the TX-RX unit.

DESCRIPTION OF COMPONENTS

Q214-0218

Lists components Q214-Q218 and their functions.

IC2*, IC3*, IC4*, IC5*, IC6*, IC7*

Lists functions for various ICs and an amplifier.

DESCRIPTION OF COMPONENTS

IC8*, IC9*

Details the functions of IC8 (Shift register) and IC9 (PLL).

IC401*, IC402*, IC403*

Details functions for DTMF encoder/decoder and microprocessor.

IC404, IC405*, IC406*, IC407*

Lists functions for multiplexer, electronic VR, and AVR.

DESCRIPTION OF COMPONENTS

D401, D402*, D403*, D404*, D405*, D406*, D407*

Lists functions for various diodes.

MODIFICATION

Cloning Function

Explains the wired cloning procedure.

Cloning with transceiver (DTMF)

Explains the DTMF cloning procedure.

PARTS LIST

CAPACITORS

Details capacitor codes, voltage ratings, and dimensions.

RESISTORS

Details resistor codes and wattage ratings.

PARTS LIST

Cabinets, Cables, and Connectors

Covers items like cabinets, panels, cables, and connectors.

PARTS LIST

Housings and Protection Parts

Covers cushions, protection items, cartons, and fuses.

PARTS LIST

Knobs, Switches, and Microphone Parts

Covers knobs, switches, and microphone elements.

PARTS LIST

Inductors and Connectors

Lists inductors and various connectors.

PARTS LIST

Resistors and Diodes

Lists resistors and diodes.

PARTS LIST

Integrated Circuits (ICs) and Transistors

Lists integrated circuits and transistors.

EXPLODED VIEW

PACKING

ADJUSTMENT

Required Test Equipment

Lists the necessary test equipment for adjustments.

Preparation

Outlines preparation steps for adjustments.

ADJUSTMENT

Frequency table

Lists frequencies for different bands and destinations.

Setting Reset Memory

Describes the procedure for resetting settings and memory.

Lock voltage

Details voltage checks for VHF and UHF bands.

ADJUSTMENT

Transmission frequency

Specifies transmission frequencies and SSG settings.

Sensitivity

Explains sensitivity adjustments for VHF and UHF bands.

ADJUSTMENT

High level Input S/N

Describes how to adjust for high-level input signal-to-noise ratio.

Distortion

Details distortion adjustments for VHF and UHF bands.

S-meter

Explains S-meter adjustment procedures.

Squelch

Describes squelch adjustment steps.

ADJUSTMENT

Squelch

Continues squelch adjustment steps for different bands and SSG levels.

EXT. SP

Describes checking external speaker switching.

POWER

Details power output adjustments for HI, MID, and LOW settings.

ADJUSTMENT

POWER

Continues power output adjustments for different bands and settings.

DCV

Explains DC voltage adjustments and checks.

TONE

Describes tone generation adjustments.

ADJUSTMENT

DTSS

Details DTSS adjustment steps.

Spurious abnormal oscillation

Explains how to check for spurious oscillations.

CTCSS

Describes CTCSS adjustments.

ADJUSTMENT

Adjustment Points

Shows the physical locations of adjustment points on the boards.

TERMINAL FUNCTIONS

TX-RX UNIT (X57-400X-XX)

Lists terminal functions for the TX-RX unit.

CN1

Details terminal functions for connector CN1.

CN2

Details terminal functions for connector CN2.

PC BOARD VIEWS

144MHz TX-RX UNIT (X57-400X-XX) (A/4) Component side view

Shows the component layout of the 144MHz TX-RX unit.

PC BOARD VIEWS

144MHz TX-RX UNIT (X57-400X-XX) (A/4) Foil side view

Shows the foil layout of the 144MHz TX-RX unit.

SCHEMATIC DIAGRAM

144MHz TX-RX UNIT CIRCUIT DIAGRAM

Provides the circuit diagram for the 144MHz TX-RX unit.

SCHEMATIC DIAGRAM

144MHz TX-RX UNIT CIRCUIT DIAGRAM

Continues the circuit diagram for the 144MHz TX-RX unit.

SCHEMATIC DIAGRAM

144MHz TX-RX UNIT CIRCUIT DIAGRAM

Continues the circuit diagram for the 144MHz TX-RX unit.

SCHEMATIC DIAGRAM

144MHz TX-RX UNIT CIRCUIT DIAGRAM

Continues the circuit diagram for the 144MHz TX-RX unit.

SCHEMATIC DIAGRAM

144MHz TX-RX UNIT CIRCUIT DIAGRAM

Continues the circuit diagram for the 144MHz TX-RX unit.

PC BOARD VIEWS

430MHz TX-RX UNIT (X57-400X-XX) (B/4) Component side view

Shows the component layout of the 430MHz TX-RX unit.

PC BOARD VIEWS

430MHz TX-RX UNIT (X57-400X-XX) (B/4) Foil side view

Shows the foil layout of the 430MHz TX-RX unit.

CONTROL UNIT CIRCUIT DIAGRAM

TX-RX UNIT/CONROL (X57-400X-XX) (C/4)

Details the control unit circuit diagram connections.

CONTROL UNIT CIRCUIT DIAGRAM

DTMF DECODE

Shows the DTMF decoder circuit.

MULTI PLEXOR

Details the multi-plexor circuits.

PC BOARD VIEWS

CONTROL UNIT (X57-400X-XX) (C/4) Component side view

Shows the component layout of the control unit.

CONTROL UNIT (X57-400X-XX) (C/4) Foil side view

Shows the foil layout of the control unit.

PC BOARD VIEWS

VOLUME UNIT (X57-400X-XX)(D/4) Component side view

Shows the component layout of the volume unit.

LCD ASSY (B38-03XX-15) Component side view

Shows the component layout of the LCD assembly.

SCHEMATIC DIAGRAM

TX-RX UNIT/CONTROL (X57-400X-XX)(C/4)

Provides connections between units and the control unit.

TX-RX UNIT/144MHz (X57-400X-XX)(A/4)

Shows connections to the 144MHz TX-RX unit.

SCHEMATIC DIAGRAM

LCD ASS'Y (B38-03XX-XX)

Shows the schematic diagram for the LCD assembly.

SCHEMATIC DIAGRAM

LCD1

Details the components connected to the LCD driver.

BLOCK DIAGRAM

DISPLAY UNIT

Shows the block diagram of the display unit.

CONTROL UNIT (X57-400X-XX)(C/4)

Provides a block diagram of the control unit.

TX-RX UNIT/144MHz (X57-400X-XX) (A/4)

Shows the block diagram for the 144MHz TX-RX unit.

BLOCK DIAGRAM

TX-RX UNIT/144MHz (X57-400X-XX) (A/4)

Continues the block diagram for the 144MHz TX-RX unit.

LEVEL DIAGRAM

TX Section

Illustrates signal levels in the transmitter path.

RX Section

Illustrates signal levels in the receiver path.

MC-45 (MULTI FUNCTION MICROPHONE)

EXTERNAL VIEW

Shows the external appearance of the MC-45 microphone.

PARTS LIST

Lists the parts for the MC-45 microphone.

SCHEMATIC DIAGRAM

Provides the schematic diagram for the MC-45 microphone.

MC-45DM (MULTI FUNCTION MICROPHONE WITH AUTOPATCH)

EXTERNAL VIEW

Shows the external appearance of the MC-45DM microphone.

PARTS LIST

Lists the parts for the MC-45DM microphone.

SCHEMATIC DIAGRAM

Provides the schematic diagram for the MC-45DM microphone.

PG-4K/L (PANEL SEPARATE KIT K : 4M,L : 7M)

PG-4K EXTERNAL VIEW

Shows the external view of the PG-4K panel separation kit.

PG-4K MAIN EXTERNAL DIMENSIONS

Details the dimensions and parts of the PG-4K panel.

Panel cable (E30-3012-05)

Describes the PG-4K panel cable.

TSU-7 (CTCSS UNIT)

TSU-7 EXTERNAL VIEW

Shows the external appearance of the TSU-7 unit.

TSU-7 PARTS LIST

Lists the parts for the TSU-7 unit.

TSU-7 (CTCSS UNIT)

TSU-7 PC BOARD VIEWS

Shows the PC board layout of the TSU-7 unit.

TSU-7 CIRCUIT DIAGRAM

Provides the circuit diagram for the TSU-7 unit.

SPECIFICATIONS

GENERAL

Lists general specifications like frequency range and mode.

TRANSMITTER

Details transmitter specifications like output power and modulation.

RECEIVER

Details receiver specifications like sensitivity and selectivity.

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