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Kenwood TK-7102H Service Manual
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Kenwood TK-7102H Service Manual

Kenwood TK-7102H Service Manual

Vhf fm transceiver
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Download this manual See also: Service Manual, Instruction Manual
VHF FM TRANSCEIVER
TK-7102H
SERVICE MANUAL
SUPPLEMENT
Chassis
(A10-4048-11)
GENERAL .................................................. 2
PARTS LIST ............................................... 4
EXPLODED VIEW .................................... 11
ADJUSTMENT ........................................ 12
PC BOARD VIEWS
This TK-7102H service manual contains a number of sections which
differ from the service manual (B51-8610-00) for the TK-7102H.
For items other than those in this TK-7102H service manual please
refer to the service namual (B51-8610-00) for the TK-7102H.
Cabinet
Front glass
(A01-2181-01)
(B10-2668-03)
Modular jack
Key top
(E08-0877-05)
(K29-9065-01)
CONTENTS
SCHEMATIC DIAGRAM .......................... 25
BLOCK DIAGRAM ................................... 29
LEVEL DIAGRAM .................................... 31
SPECIFICATIONS .................................... 33
© 2002-2 PRINTED IN JAPAN
B51-8627-00 ( N ) 951
Panel assy
(A62-0942-03)
TX-RX UNIT (X57-6380-XX) ............... 19

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Summary of Contents for Kenwood TK-7102H

  • Page 1: Table Of Contents

    This TK-7102H service manual contains a number of sections which differ from the service manual (B51-8610-00) for the TK-7102H. For items other than those in this TK-7102H service manual please refer to the service namual (B51-8610-00) for the TK-7102H. Chassis...

  • Page 2: General

    TK-7102H GENERAL INTRODUCTION PRE-INSTALLATION CONSIDERNATIONS SCOPE OF THIS MANUAL 1. UNPACKING This manual is intended for use by experienced techni- Unpack the radio from its shipping container and check cians familiar with similar types of commercial grade com- for accessory items. If any item is missing, please contact munications equipment.
  • Page 3 Plan cable runs for protection against pinching or crush- Your KENWOOD dealer can help you select an antenna sys- ing wiring, and radio installation to prevent overheating. tem that will best serve your particular needs.

  • Page 4: Parts List

    Les articles non mentionnes dans le Parts No. ne sont pas fournis. Y : AAFES (Europe) X : Australia M: Other Areas Teile ohne Parts No. werden nicht geliefert. TK-7102H (Y51-4810-XX) DISPLAY UNIT (X54-3340-20), TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No.

  • Page 5: Tx-Rx Unit (X57-6380-Xx)

    TK-7102H PARTS LIST TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CC73GCH1H0R5B CHIP C 0.5PF C158 CC73GCH1H220J CHIP C 22PF CC73GCH1H330J CHIP C 33PF K2,M2 C160 CK73FB1C334K CHIP C 0.33UF...
  • Page 6 TK-7102H PARTS LIST TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C275 CK73GB1C104K CHIP C 0.10UF C805 CK73FB1H102K CHIP C 1000PF C277 CK73FB1A105K CHIP C 1.0UF C807...
  • Page 7 TK-7102H PARTS LIST TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L40-2702-86 SMALL FIXED INDUCTOR (27UH) RK73GB1J683J CHIP R 1/16W L40-2785-92 SMALL FIXED INDUCTOR (270NH) K2,M2 RK73GB1J104J...
  • Page 8 TK-7102H PARTS LIST TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R103 RK73GB1J182J CHIP R 1.8K 1/16W R180 RK73GB1J271J CHIP R 1/16W R104 R92-1252-05 CHIP R 0 OHM J...
  • Page 9 TK-7102H PARTS LIST TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R276-278 RK73GB1J102J CHIP R 1.0K 1/16W MA2S111 DIODE R279 RK73GJ1J393D CHIP R 1/16W HZU5ALL DIODE R280...
  • Page 10 TK-7102H PARTS LIST TX-RX UNIT (X57-6380-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation 2SK1824 2SC3357 TRANSISTOR 2SC4617(S) TRANSISTOR 2SC3357 TRANSISTOR 3SK255 Q29,30 KRC102S DIGITAL TRANSISTOR 2SA1745(6,7) TRANSISTOR DTC363EU DIGITAL TRANSISTOR...
  • Page 11 TK-7102H EXPLODED VIEW M2.6 x 8 : N67-2608-46 M2.6 x 6 (Br-Tap) : N87-2606-46 M2.6 x 14 (Br-Tap) : N87-2614-46 Bx2 Bx2 IC101 Q101 DISPLAY UNIT (X54) TX-RX UNIT (X57) Parts with the exploded numbers larger than 700 are not supplied.
  • Page 12 TK-7102H ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 136 to 175MHz (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1µV to greater than –7dBm/100mV 2. Power Meter Input Impedance 50Ω Operation Frequency...
  • Page 13 TK-7102H ADJUSTMENT Note Adjustment Location • EEPROM Switch The tuning data (Deviation, Squelch, etc.) for the Power Display EEPROM, is stored in memory. When parts are changed, Volume readjust the transceiver. up/down Speaker • AF PA IC (IC101) How to mounting the IC101.
  • Page 14 TK-7102H ADJUSTMENT 5. The solder melts and binds the FET and the cube se- Replacing a Drive FET (Q800) curely. Then, slide the soldering iron along the PCB sur- 1. When replacing the Drive FET, you must also replace its face to cool the soldering down ( r ).
  • Page 15 TK-7102H ADJUSTMENT PCB Section Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method 1. Setting 1) Power supply voltage DC Power supply terminal : 13.6V ±0.1V 2. VCO lock 1) CH : TX high Digital voltmeter 5.5V ±0.1V...
  • Page 16 TK-7102H ADJUSTMENT Transmitter Section Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method Within ± 100Hz 1. Frequency 1) CH : TX center Frequency counter PC key Adjust to center frequency 2) Transmit ±1.0W 2. High 1) CH : TX low...
  • Page 17 TK-7102H PC BOARD VIEWS DISPLAY UNIT (X54-3340-20) Component side view (J72-0790-12) KRC404RTK DA221 NJM2100V KRC414RTK NJM2904V 2SA1745 UPB1509GV 2SA1832 24LC08BT-ISN 2SC2412K MONI 2SC4617 MA742 2SC4738 2SC5108 POWER TA75W01FU 2SK508NV HOOK DOWN PROG POWER 2SC3357 LEDMON LEDPF LEDC1 LEDC2 LEDR LEDG...
  • Page 18 TK-7102H PC BOARD VIEW TX-RX UNIT (X57-6380-XX) -20 : K,M -21 : K2,M2 Component side view (J72-0829-12) Ref. No. Address R262 IC17 IC19 C852 IC21 C295 C350 IC22 C299 C829 R265 IC101 C849 C328 R154 C853 IC800 C827 C811 Q800...
  • Page 19 TK-7102H PC BOARD VIEW TX-RX UNIT (X57-6380-XX) -20 : K,M -21 : K2,M2 Foil side view (J72-0829-12) Ref. No. Address IC10 CN800 IC11 IC14 IC15 L809 IC18 IC20 IC23 C850 C846 R823 D806 C841 C840 L807 D805 D803 L805 C837...
  • Page 20 TK-7102H PC BOARD VIEW TX-RX UNIT (X57-6380-XX) -20 : K,M -21 : K2,M2 Component side view + Foil side (J72-0829-12) Ref. No. Address Ref. No. Address R262 CN800 C852 L809 C295 C350 IC10 C299 C829 R265 IC11 Q101 C849 C328...

  • Page 21: Schematic Diagram

    TK-7102H SCHEMATIC DIAGRAM Note : Component marked with a dot ( ) are parts of layer 1.

  • Page 22: Block Diagram

    TK-7102H TK-7102H BLOCK DIAGRAM DISPLAY UNIT TX-RX UNIT X54-334 * - ** X57-638 * - ** K,M : D801 MA4PH633 2SC4649(N,P) D804 XB15A709 Q800 Q101 IC23 K2,M2 : D801 MA4PH633 2SC3357 2SK3075 2SK3478-22 2SK508NV(K52) 2SC5108(Y) UPB1509GV 2SC5108(Y) 2SC3357 D803,D804 XB15A709...

  • Page 23: Level Diagram

    TK-7102H TK-7102H LEVEL DIAGRAM Receiver Section Center Frequency 49.95MHz 450kHz Audio Frequency W –77.5dBm W –85.0dBm N –74.0dBm N –84.5dBm W –123.5dBm W –119.0dBm W –104.5dBm W –104.5dBm W –112.0dBm W –92.0dBm N –123.0dBm N –118.5dBm N –103.5dBm N –103.5dBm N –111.5dBm...

  • Page 24: Specifications

    TK-7102H SPECIFICATIONS GENERAL Frequency Range ....... K,M : 146 to 174MHz K2,M2 : 136 to 162MHz Number of Channels ......4 channels Channel Spacing ......... Wide : 25kHz Narrow : 12.5kHz PLL Channel Stepping ......2.5, 5, 6.25, 7.5kHz Operating Voltage ....... 13.6V DC ± 15% Current Drain ........
  • Page 25 Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium KENWOOD ELECTRONICS FRANCE S.A. 13, Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands KENWOOD ELECTRONICS ITALIA S.p.A.