Kenwood TK-7102 DESCRIPTION OF COMPONENTS

TK-7102

DESCRIPTION OF COMPONENTS

Ref. No. Use/Function Operation/Condition

Q34 TRANSISTOR DC SWITCH(SB)

/Active when power on

Q35 TRANSISTOR AF MUTE

/Active while Mute3 is H

Q37 TRANSISTOR BEAT SHIFT

/Active while Beat shift is on

Q38 TRANSISTOR OVER VOLTAGE DETECTION

/Active while PS voltage is more than 18V

Q41 TRANSISTOR MIC MUTE

/Emergency Mic mute

Q42 TRANSISTOR DC SWITCH(SB)

/Active when power on

Q43 FET AF MUTE

Active while Mute1 is H

Q101 TRANSISTOR APC Control

IC1 IC PLL SYNTHESIZER

IC3 IC DIGITAL POTENTIOMETER

IC4 IC BUFFER AMP

IC5 IC FM DEMODULATION

IC6 IC CPU

IC7 IC EEPROM

IC9 IC DTMF DECODE

C10 IC Audio Filter

IC11 IC Active Filter (QT/DQT)

IC12 IC DC AMP

IC14 IC Voltage regulator (5C)

IC15 IC Votage detector Reset

IC16 IC AF AMP

IC17 IC Voltage regulator (5M)

IC18 IC Votage detector Int

IC19 IC DIVIDER (7.159MHz)

IC20 IC Voltage regulator (8C)

IC21 IC MIC AMP

IC22 IC MIC AMP

IC23 IC DIVIDER (Hetero)

IC101 IC Power Module

IC102 IC AUDIO POWER AMP

Contents

Main TK-7102TK-7102 VHF FM TRANSCEIVER TK-7102 SERVICE MANUAL SPECIFICATIONS KENWOOD CORPORATION TK-7102TK-7102 CONTENTS / GENERAL GENERAL INTRODUCTION ORDERING REPLACEMENT PARTS GENERAL NOTE 1.Controls and Functions 1-1. Front Panel u OPERATING FEATURES qwe tr i 1-4. Display 1-5. Rear panel OPERATING FEATURES Scan ON/OFF Talk around Temporary delete None OPERATING FEATURES Temporary delete 5.Details of Features Time-out timer PTT ID TK-7102 Stun 7.Audible User Feedback Tones Stun on tone Stun off tone REALIGNMENT 3-4. Programming Software Description Fig. 2 3-5. Programming With IBM PC 4.Clone Mode DISASSEMBLY FOR REPAIR TK-7102 Frequency Configuration Fig. 2 Receiver system Fig. 1 Frequency configuration Receiver System PLL Frequency Synthesizer PLL VCO Fig. 6 PLL circuit Unlock Circuit Fig. 8 Transmitter system Transmitter System Outline Power Amplifier Circuit APC Circuit Memory Circuit Control Circuit Fig. 10 Control circuit Fig. 9 APC circuit Display Circuit Key Matrix Circuit Power Supply Circuit Decode QT/DQT/DTMF Fig. 14 Encode SEMICONDUCTOR DATA Microprocessor : 784214AGCXXX (TX-RX Unit IC6) Terminal function DESCRIPTION OF COMPONENTS Display Unit (X54-3340-20) TX-RX Unit (X57-6290-20) DESCRIPTION OF COMPONENTS Destination TK-7102 Parts No. Description DISPLAY UNIT (X54-3340-20) Ref. No. Destination M:TK-2107 M2:TK-2107 TX-RX UNIT (X57-6290-20) 400~420Hz : C5 450~470Hz : C6 M:TK-2107 M2:TK-2107 400~420Hz : C5 450~470Hz : C6 M:TK-2107 M2:TK-2107 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied. PACKING Parts with the exploded numbers larger than 700 are not supplied. Test Equipment Required for Alignment Tuning cable (E30-3383-05) MIC connector (Front view) Test cable for microphone input (E30-3360-08) Page Test frequency(MHz) Use KPG-70D programming software for adjustment of the next items. PCB Section Receiver Section Transmitter section Test frequency(MHz) Page DISPLAY UNIT (X54-3340-20) Component side view + Foil side view DISPLAY UNIT (X54-3340-20) Foil side view DISPLAY UNIT (X57-3340-20) Component side view TK-7102 TX-RX UNIT (X57-6290-20) Component side view B BCE Component side view TX-RX UNIT (X57-6290-20) Foil side view 35 36 26 25 50 TK-7102 TX-RX UNIT (X57-6290-20) Component side view + Foil side view 20 OUT IN GND SCHEMATIC DIAGRAM TK-7102 Note : Component marked with a dot () are parts of pattern1. Page Page TK-7102TK-7102 CONTENTS / GENERAL GENERAL INTRODUCTION ORDERING REPLACEMENT PARTS TK-7102 SERVICE MANUAL SPECIFICATIONS KENWOOD CORPORATION