Kenwood TK-8102H Service Manual
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Kenwood TK-8102H Service Manual

Kenwood TK-8102H Service Manual

Uhf fm transceiver
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See also: Service Manual , Instruction Manual
UHF FM TRANSCEIVER
TK-8102H
SERVICE MANUAL
Chassis
(A10-4048-11)
GENERAL .................................................. 2
OPERATING FEATURES .......................... 3
REALIGNMENT ......................................... 7
DISASSEMBLY FOR REPAIR ................... 9
CIRCUIT DESCRIPTION .......................... 10
SEMICONDUCTOR DATA ...................... 15
PARTS LIST ............................................. 19
EXPLODED VIEW .................................... 25
PACKING ................................................. 26
Cabinet
Front glass
(A01-2181-01)
(B10-2668-03)
Modular jack
Key top
(E08-0877-05)
(K29-9065-01)
CONTENTS
ADJUSTMENT ........................................ 27
TERMINAL FUNCTION ........................... 32
SCHEMATIC DIAGRAM .......................... 41
BLOCK DIAGRAM ................................... 45
LEVEL DIAGRAM .................................... 47
SPECIFICATIONS .................................... 49
© 2001-11 PRINTED IN JAPAN
B51-8611-00 ( N ) 851
Panel assy
(A62-0942-03)
TX-RX UNIT (X57-6390-20) ................ 35

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  • Page 1: Table Of Contents

    UHF FM TRANSCEIVER TK-8102H SERVICE MANUAL © 2001-11 PRINTED IN JAPAN B51-8611-00 ( N ) 851 Chassis Cabinet Front glass Panel assy (A10-4048-11) (A01-2181-01) (B10-2668-03) (A62-0942-03) Modular jack Key top (E08-0877-05) (K29-9065-01) CONTENTS GENERAL ..........2 ADJUSTMENT ........27 OPERATING FEATURES ......3 TERMINAL FUNCTION ......

  • Page 2: General

    TK-8102H GENERAL 3. PRE-INSTALLATION CHECKOUT INTRODUCTION 3-1. Introduction SCOPE OF THIS MANUAL Each radio is adjusted and tested before shipment. How- This manual is intended for use by experienced techni- ever, it is recommended that receiver and transmitter opera- cians familiar with similar types of commercial grade com- tion be checked for proper operation before installation.

  • Page 3: Operating Features

    Control station. The antenna system selection depends 1. Controls and Functions on many factors and is beyond the scope of this manual. Your KENWOOD dealer can help you select an antenna sys- 1-1. Front Panel tem that will best serve your particular needs.
  • Page 4 TK-8102H OPERATING FEATURES 1-4. Display 2. Operation Features The TK-8102H is a UHF FM radio designed to operate in conventional format. The programmable features are sum- marized. 3. Transceiver Controls and Indicators 3-1. Front Panel Controls All the keys on the front panel are momentary-type push buttons.

  • Page 5: Scan Operating

    TK-8102H OPERATING FEATURES • Key lock Revert channel Pressing this key causes the transceiver to accept entry The revert channel is used to transmit during scanning of only the [Vol Up/Down]*, [Key lock], Microphone [PTT], and set by the programming software (KPG-70D).

  • Page 6: Audible User Feedback Tones

    TK-8102H OPERATING FEATURES Off hook decode SP unmute Channel setting RX condition Speaker If the Off hook decode function has been enabled, re- QT/DQT DTMF condition moving and replacing the microphone on the hook has no Carrier None None Carrier Sounds effect for decoding QT/DQT and option signalling.

  • Page 7: Realignment

    PTT key is released. 3. PC Mode 3-1. Preface The TK-8102H transceiver is programmed using a per- sonal computer, a programming interface (KPG-46) and pro- gramming software (KPG-70D). The programming software can be used with an IBM PC or compatible.

  • Page 8: Clone Mode

    When data is received by the transceiver, the green LED blink. 1. Turn the master TK-8102H power ON with the [1] key In the PC mode, 4CH LEDs, [MON] LED and [ ] LED are held down. The TK-8102H [ ] LED is turned on.

  • Page 9: Disassembly For Repair

    TK-8102H DISASSEMBLY FOR REPAIR 3. To remove the display unit PCB, detach the PCB by lifting 1. When you remove the panel, turn the transceiver up side down. Detach the panel by lifting the tabs as shown be- at the indents of the PCB as shown below.

  • Page 10: Circuit Description

    TK-8102H CIRCUIT DESCRIPTION Frequency Configuration Item Rating Nominal center frequency 49.95MHz The receiver utilizes double conversion. The first IF is 49.95MHz and the second IF is 450kHz. The first local oscil- Pass bandwidth 5.0kHz or more at 3dB lator signal is supplied from the PLL circuit.
  • Page 11 TK-8102H CIRCUIT DESCRIPTION CF1 (Wide) CF2 (Narrow) L36,38,48,49 L30,32 D801~ D25,26,28 D21,22 D804 RF AMP IF AMP D/A CONVERTER IF system TCXO X3 multiply 1st local OSC (VCO/PLL) Fig. 2 Receiver system Wide/Narrow Changeover Circuit AF Signal System The Wide port (pin 92) and Narrow port (pin 91) of the The detection signal from IF IC (IC5) goes to D/A con- CPU is used to switch between ceramic filters.
  • Page 12 TK-8102H CIRCUIT DESCRIPTION Unlock Circuit PLL Frequency Synthesizer During reception, the 8RC signal goes high, the 8TC sig- The PLL circuit generates the first local oscillator signal nal goes low, and Q29 turns on. Q31 turns on and a voltage for reception and the RF signal for transmission.
  • Page 13 TK-8102H CIRCUIT DESCRIPTION Transmitter System Control Circuit Outline The CPU carries out the following tasks: 1) Controls the WIDE, NARROW, TX/RX outputs. The transmitter circuit produces and amplifies the de- 2) Adjusts the AF signal level of the AF filter (IC10) and turns sired frequency directly.
  • Page 14 IC11(2/2) IC11(1/2) Key Matrix Circuit QTIN The TK-8102H front panel has function keys. Each of them is connected to a cross point of a matrix of the KMI1 to KMO2 ports of the microprocessor. The KMO1 to KMO2 DTMF ports are always high, while the KMI1 to KMI4 ports are al- DECO.

  • Page 15: Semiconductor Data

    TK-8102H CIRCUIT DESCRIPTION / SEMICONDUCTOR DATA SEMICONDUCTOR DATA Power Supply Circuit When the POWER switch on the display unit is pressed, Microprocessor : 784214AGCXXX the power port on the display unit which is connected to CPU port 18 (POWER), goes low, then CPU port 93 (SBC)
  • Page 16 TK-8102H SEMICONDUCTOR DATA Pin No. Name Function Pin No. Name Function AVREF LEDC1 LED for CH1 Key FNC1 Function Port 1 LEDC2 LED for CH2 Key FNC2 Function Port 2 LEDR TX LED HOOK Hook LEDG Busy LED From FPU...

  • Page 17: Description Of Components

    TK-8102H DESCRIPTION OF COMPONENTS Display Unit (X54-3340-20) Ref. No. Parts Name Description Ref. No. Parts Name Description Diode Reverse connect protection D1~4 Key backlit Diode Over voltage detection Monitor key light Poly switch Current protection Programmable key light Diode OR gate /MIC mute, AGC...
  • Page 18 TK-8102H DESCRIPTION OF COMPONENTS Ref. No. Parts Name Description Ref. No. Parts Name Description Transistor DC switch (8R) Q800 RF amplifier / Drive amplifier 1 / Active while RX Q801 RF amplifier / Drive amplifier 2 Transistor AF mute PLL synthesizer...

  • Page 19: Parts List

    TK-8102H PARTS LIST New Parts. indicates safety critical components. L : Scandinavia K : USA P : Canada Parts without Parts No. are not supplied. Y : PX (Far East, Hawaii) T : England E : Europe Les articles non mentionnes dans le Parts No. ne sont pas fournis.
  • Page 20 TK-8102H PARTS LIST TX-RX UNIT (X57-6390-20) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CC73GCH1H271J CHIP C 270PF C173 CK73GB1C104K CHIP C 0.10UF CK73GB1H471K CHIP C 470PF C174 CC73GCH1H100C CHIP C...
  • Page 21 TK-8102H PARTS LIST TX-RX UNIT (X57-6390-20) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C302 C92-0040-05 CHIP-ELE 47UF 16WV C817 C93-0567-05 CHIP C 39PF 500WV C304 CK73GB1H471K CHIP C 470PF...
  • Page 22 TK-8102H PARTS LIST TX-RX UNIT (X57-6390-20) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L34-4604-05 AIR-CORE COIL RK73GB1J683J CHIP R 1/16W L34-4604-05 AIR-CORE COIL RK73GB1J473J CHIP R 1/16W L41-1575-06 SMALL FIXED INDUCTOR...
  • Page 23 TK-8102H PARTS LIST TX-RX UNIT (X57-6390-20) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R155 RK73GB1J472J CHIP R 4.7K 1/16W R258 RK73GB1J104J CHIP R 100K 1/16W R156 RK73GB1J101J CHIP R...
  • Page 24 TK-8102H PARTS LIST TX-RX UNIT (X57-6390-20) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R813 RK73EB2B100J CHIP R 1/8W IC22 NJM2904V MOS IC R814 RK73GB1J683J CHIP R 1/16W IC101 LA4600...

  • Page 25: Exploded View

    TK-8102H 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 26: Packing

    TK-8102H PACKING 36 Protection bag (H25-2341-04) 6 Instruction manual (English) (B62-1596-00) 7 Instruction manual (Spanish) (B62-1597-00) : K 34 Packing fixture (H12-3112-05) 34 Packing fixture (H12-3112-05) 36 Protection bag (H25-2341-04) 47 Microphone (T91-0624-05) : K 37 Item carton case (H52-1829-12)

  • Page 27: Adjustment

    TK-8102H ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 400 to 520MHz (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1 V to greater than –7dBm/100mV 2. Power Meter Input Impedance Operation Frequency...
  • Page 28 TK-8102H 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 29 TK-8102H ADJUSTMENT 5. The solder melts and binds the FET and the cube se- Replacing a Drive FET (Q801) 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 30 TK-8102H 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 2. VCO lock 1) CH : TX high Digital voltmeter 5.5V 0.1V voltage* 2) CH : RX high 5.5V...
  • Page 31 TK-8102H ADJUSTMENT Transmitter Section Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method 1. Frequency 1) CH : TX center Frequency counter PC key Adjust to center frequency Within 100Hz 2) Transmit 2. High 1) CH : TX low Power meter 1.0W...

  • Page 32: Terminal Function

    TK-8102H TERMINAL FUNCTION CN1 (TX-RX Unit) J1 (TX-RX Unit) Pin No. Name Function Pin No. Name Function Ground Audio signal output to internal/external speaker. PTT/TXD Ground HOOK Hook detection/RXD J1 (Control Unit) Mic ground Mic signal input Pin No. Name...

  • Page 33: Pc Board Views

    TK-8102H PC BOARD VIEWS DISPLAY UNIT (X54-3340-20) Component side view KRC404RTK MA742 NJM2100V KRC414RTK NJM2904V 24LC08BT-ISN 2SA1745 2SA1832 2SC2412K MONI 2SC3356 2SK508NV 2SC4617 2SC4738 POWER 2SC5108 2SC5110 2SK2596 TA75W01FU HOOK DOWN PROG POWER LEDMON LEDPF LEDC1 LEDC2 2SA1641 LEDR LEDG...

  • Page 34: Tx-Rx Unit (X57-6390-20)

    TK-8102H PC BOARD VIEW TX-RX UNIT (X57-6390-20) Component side view Ref. No. Address R262 IC17 IC19 C853 IC21 C295 C350 IC22 C299 C833 R265 IC101 C328 R154 C821 IC800 C832 C849 C818 Q801 C842 C820 Q101 C814 R813 C813 TEMP3...
  • Page 35 TK-8102H PC BOARD VIEW TX-RX UNIT (X57-6390-20) Foil side view Ref. No. Address IC10 IC11 IC14 L810 IC15 L809 IC18 IC20 C848 C847 L808 D806 C844 C843 R829 D805 D803 L807 D804 L806 C838 C836 Q800 C363 C839 C251 R802...
  • Page 36 TK-8102H PC BOARD VIEW TX-RX UNIT (X57-6390-20) Component side view + Foil side Ref. No. Address Ref. No. Address R262 L810 C853 C295 C350 L809 IC10 Q101 C299 C833 R265 IC11 Q800 C328 R154 C821 IC14 Q801 C832 C849 C818...

  • Page 37: Schematic Diagram

    TK-8102H Note : Component marked with a dot ( ) are parts of pattern 1. SCHEMATIC DIAGRAM...

  • Page 38: Block Diagram

    TK-8102H TK-8102H BLOCK DIAGRAM...

  • Page 39: Level Diagram

    TK-8102H TK-8102H LEVEL DIAGRAM Receiver Section Transmitter Section...

  • Page 40: Specifications

    TK-8102H SPECIFICATIONS GENERAL Frequency Range ....... 450 to 490MHz Number of Channels ......4 channels Channel Spacing ......... Wide : 25kHz Narrow : 12.5kHz PLL Channel Stepping ......5.0, 6.25kHz Operating Voltage ....... 13.6V DC 15% Current Drain ........Less than 0.4A on standby Less than 1.0A on receive...
  • Page 41 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.

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