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UHF FM TRANSCEIVER
TK-3202/3206
SERVICE MANUAL
Knob (PTT)
(K29-9308-03)
Photo is TK-3202.
Antenna
(T90-1039-05): TK-3202(K,M)
(T90-1040-05): TK-3202(K2,M2)
(KRA-27: Option): TK-3206(M,M3)
Knob (CH-SELECTOR)
(K29-9318-03)
Knob (VOLUME)
(K29-9309-03)
Cabinet assy
(A02-3852-23)(8CH):
(A02-3851-23)(16CH):
TK-3206(M,M3)
TK-3206 :
Does not come with antenna.
Antenna is available as an option.
©
2004-2 PRINTED IN JAPAN
B51-8678-00 (S) 1246
CONTENTS
GENERAL ............................................................. 2
SYSTEM SET-UP ................................................. 2
REALIGNMENT .................................................... 3
DISASSEMBLY FOR REPAIR .............................. 5
CIRCUIT DESCRIPTION ....................................... 8
TERMINAL FUNCTION ...................................... 12
SEMICONDUCTOR DATA ................................. 12
COMPONENTS DESCRIPTION ......................... 13
PARTS LIST ........................................................ 14
EXPLODED VIEW ............................................... 21
PACKING ............................................................ 22
ADJUSTMENT ................................................... 24
TX-RX UNIT (X57-6890-XX) ......................... 30
SCHEMATIC DIAGRAM ..................................... 34
BLOCK DIAGRAM .............................................. 38
LEVEL DIAGRAM ............................................... 40
KSC-31 / KNB-29N / KNB-30A / KBH-10 ......... 41
SPECIFICATIONS ............................ BACK COVER
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Table of Contents
Related Manuals for Kenwood 3206
Summarization of Contents
General and System Set-Up
Manual Scope
Details the manual's intended audience and scope of service information.
Ordering Replacement Parts
Information on how to order replacement parts and required identification.
Personal Safety Precautions
Recommended precautions for personal safety during operation and service.
Service Information
Guidance on servicing the radio, referring to diagrams and procedures.
Realignment Procedures
Operating Modes
Description of different operational modes: User, PC, Data Programming, and Clone.
Accessing Operating Modes
Procedure to enter User, PC, and Clone modes by specific key presses.
PC Mode Setup and Operation
Details on PC mode setup including interface cable, software, and connection procedures.
Wireless Cloning Procedure
Step-by-step guide for performing wireless cloning between transceivers.
Disassembly and Reassembly Procedures
Case Assembly Removal
Procedure for removing the case assembly from the transceiver chassis.
Battery Release Lever Removal
Steps to remove the battery release lever from the case assembly.
TX-RX Unit Removal
Procedure for removing the TX-RX unit from the transceiver chassis.
Battery Release Lever Attachment
Instructions for correctly attaching the battery release lever and spring.
Chassis and Case Assembly Mounting
Procedure for mounting the chassis into the case assembly, including speaker and packing.
Positive Terminal Attachment
Precautions for attaching the positive terminal to the chassis before TX-RX unit mounting.
Antenna Receptacle Attachment
Procedure for screwing the antenna receptacle to the chassis center hole.
Volume and Channel Knob Nuts
Note on different nuts for volume/channel knobs and use of jig.
TX-RX Unit Screw Sequence
Specifies the screw sequence for mounting the TX-RX unit to the chassis.
Circuit Description
Frequency Config & Receiver
Details receiver frequency configuration, PLL, and signal path from antenna.
IF, W/N, Audio Circuits
Explains IF amplification, W/N switching, and audio signal processing.
Squelch & Receive Signalling
Describes squelch operation and signalling types: QT/DQT, MSK, DTMF.
PLL Frequency Synthesizer
Explains PLL operation, VCO, and unlock detector for frequency generation.
Transmitter System Overview
Covers mic amp, drive/final amps, APC, signalling, and power supply.
Control Circuit & Frequency Shift
Explains microprocessor control and the frequency shift circuit function.
Memory & Low Battery Warning
Describes memory circuit operation and the low battery warning system.
Terminal Functions and Semiconductor Data
CN401 Terminal Functions
Table detailing pin assignments, I/O, and functions for connector CN401.
Microprocessor Pin Functions
Detailed pin function descriptions for the microprocessor IC405.
Components Description
TX-RX Unit Components
Description and operation/condition for components within the TX-RX unit.
Additional PCB Components
Description and operation/condition for components on the additional PCB.
Parts List
TK-3202/3206 Main Parts
List of main parts for TK-3202/3206 models with part numbers and destinations.
TX-RX Unit Parts (1)
Detailed list of parts for the TX-RX unit, including capacitors and connectors.
TX-RX Unit Parts (2)
Continued list of TX-RX unit parts, primarily capacitors.
TX-RX Unit Parts (3)
Continued list of TX-RX unit parts, primarily capacitors.
TX-RX Unit Parts (4)
Continued list of TX-RX unit parts, including capacitors, inductors, and resistors.
TX-RX Unit Parts (5)
Continued list of TX-RX unit parts, primarily resistors and inductors.
TX-RX Unit Parts (6)
Continued list of TX-RX unit parts, including resistors, diodes, and ICs.
TX-RX Unit Parts (7)
Continued list of TX-RX unit parts, including diodes, ICs, transistors, and thermistors.
Additional PCB Parts
List of parts for the additional PCB, including capacitors and resistors.
Exploded View Diagram
TX-RX Unit Exploded View
Exploded view of the TX-RX unit showing component placement and reference numbers.
TK-3202 Packing Contents
Included Accessories and Parts
List of all included accessories and parts for the TK-3202 packaging.
TK-3206 Packing Contents
Included Accessories and Parts
List of all included accessories and parts for the TK-3206 packaging.
Adjustment Procedures and Requirements
Required Test Equipment & Parts
List of test equipment and specific parts needed for alignment procedures.
Specialized Adjustment Tools
Details on antenna adapter, repair jig, and battery jig requirements.
Adjustment Points and Frequency Data
Diagrams of adjustment points and tables for frequency/signalling settings.
Tuning Preparations
Guidance on power supply, dummy load, and measurement meters for tuning.
Common and Transmitter Section Adjustments
Covers adjustments for setting, VCO lock, frequency, power, deviation, and VOX.
Specific Transmitter Adjustments
Procedures for VOX, DQT, QT, DTMF, and MSK deviation adjustments.
Receiver Section Adjustments
Procedure for BPF Waveform adjustment for different receiver models.
Sensitivity, Squelch, and Battery Checks
Adjustments for sensitivity, SQL1/SQL9 thresholds, and battery detection.
PC Board Layouts
TX-RX Unit Component Side View
Layout diagram of the TX-RX unit's component side with reference numbers.
Additional PCB Layout
Layout diagram for the additional PCB, showing component placement.
TX-RX Unit Foil Side View (1)
Layout diagram of the TX-RX unit's foil side with reference numbers.
TX-RX Unit Foil Side View (2)
Continued layout diagram of the TX-RX unit's foil side.
TX-RX Unit Foil Side View (3)
Continued layout diagram of the TX-RX unit's foil side.
TX-RX Unit Component Side View (cont.)
Continued layout diagram of the TX-RX unit's component side.
TX-RX Unit Foil Side View (4)
Continued layout diagram of the TX-RX unit's foil side.
Schematic Diagram (Part 1)
PLL, Voltage Regulators, Detectors
Schematics for PLL system, voltage regulators, and voltage detector circuits.
LED and Beat Shift Circuits
Schematics for LED drivers and the beat shift switch.
VCO, Microprocessor, RF/AF Amps
Schematics for VCO, microprocessor, RF buffer, and AF amplifier circuits.
Audio and Mute Control
Schematics for audio amplifier, speaker mute, and related controls.
Block Diagram
Overall System Block Diagram
High-level block diagram illustrating the main functional units and signal flow.
Schematic Diagram (Part 2)
Transmitter Stage Schematics
Schematics for RF amplifier stages: RF, Drive, and Final Amplifiers.
Receiver and IF Stage Schematics
Schematics for receiver RF, mixer, IF amplifier, and BPF stages.
Control and Audio Path Schematics
Schematics for microprocessor, audio processor, and related control circuits.
Accessories and Battery Packs
KSC-31 Rapid Charger
External view and specifications for the KSC-31 rapid charger.
KNB-29N Ni-MH Battery Pack
External view, specifications, and schematic for the KNB-29N battery pack.
KNB-30A Ni-Cd Battery Pack
External view, specifications, and schematic for the KNB-30A battery pack.
KBH-10 Belt Clip
External view of the KBH-10 belt clip accessory.
Level Diagram
Receiver Level Diagram
Diagram showing signal levels and stages in the receiver path.
Transmitter Level Diagram
Diagram showing signal levels and stages in the transmitter path.
General Specifications
General Radio Specifications
Details on frequency range, channels, spacing, voltage, battery life, and dimensions.
Receiver Specifications
Specifications for receiver sensitivity, selectivity, intermodulation, and audio output.
Transmitter Specifications
Specifications for transmitter power, spurious/harmonics, modulation, and distortion.
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