Kenwood TK-2000 Service Manual
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Kenwood TK-2000 Service Manual

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VHF FM TRANSCEIVER
TK-2000
SERVICE MANUAL
REVISED II
Helical antenna
(T90-1094-05)
Knob (PTT)
(K29-9489-13)
Button knob (Side)
(K29-9490-13)
Plastic cabinet assy
(A02-4135-13)
This product complies with the RoHS directive for the European market.
Knob(Selector)
(K29-9488-03)
Knob (Volume)
(K29-9487-03)
© 2015-1 PRINTED IN JAPAN
RQ062 (K) B5B-7185-00
This service manual applies to products with B4603266 or
subsequent serial numbers.
CONTENTS
GENERAL ....................................................2
SYSTEM SET-UP .........................................3
REALIGNMENT ...........................................3
DISASSEMBLY FOR REPAIR .....................6
CIRCUIT DESCRIPTION .............................7
SEMICONDUCTOR DATA .........................10
COMPONENTS DESCRIPTION ................11
PARTS LIST ...............................................12
EXPLODED VIEW ......................................18
ADJUSTMENT ...........................................19
TX-RX UNIT (X57-8093-00) ....................24
SCHEMATIC DIAGRAM ............................28
BLOCK DIAGRAM .....................................32
LEVEL DIAGRAM ......................................34
SPECIFICATIONS ......................................35
This product uses Lead Free solder.

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  • Page 1: Table Of Contents

    VHF FM TRANSCEIVER TK-2000 SERVICE MANUAL REVISED II © 2015-1 PRINTED IN JAPAN RQ062 (K) B5B-7185-00 This service manual applies to products with B4603266 or subsequent serial numbers. CONTENTS Knob(Selector) (K29-9488-03) GENERAL ............2 SYSTEM SET-UP .........3 Knob (Volume) (K29-9487-03) Helical antenna REALIGNMENT ...........3...

  • Page 2: General

    Copyright 2014 by JVC KENWOOD Corporation. All The title to and ownership of copyrights for firmware rights reserved. embedded in Kenwood product memories are reserved for No part of this manual may be reproduced, translated, JVC KENWOOD Corporation. Any modifying, reverse en-...

  • Page 3: System Set-Up

    RF power Type Choose the type of transceiver TX/RX 136~174 5.0W TK-2000 K,M A personal computer, programming interface (KPG-22A/22U), Transceiver programming and FPU (programming software) are required for programming. (The frequency, TX power HI/LOW, and signaling data are programmed for the transceiver.)
  • Page 4 TK-2000 REALIGNMENT 2. When the POWER is switched on, user mode can be Frequency (MHz) entered immediately. When the PC sends a command, 172.79375 the transceiver enters PC mode. 172.79500 When data is read from the transceiver, the red LED 172.80000...
  • Page 5 TK-2000 REALIGNMENT 4. Clone mode Note: Programming data can be transferred from one trans- • The Model name and Market codes must be the same in ceiver to another by connecting them via their SP/MIC con- order to clone the transceiver.

  • Page 6: Disassembly For Repair

    TK-2000 DISASSEMBLY FOR REPAIR 1. Separating the Case Assembly from the 2. Removing the TX-RX unit from the Chassis Chassis 1. Remove the two knobs ( a ). 1. Remove the packing ( e ). 2. Remove the two screws ( b ).

  • Page 7: Circuit Description

    TK-2000 CIRCUIT DESCRIPTION 1. Frequency Confi guration The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is 450kHz. The fi rst Local os- cillator is supplied from the PLL circuit. The PLL circuit in the transmitter generates the neces- sary frequencies.
  • Page 8 TK-2000 CIRCUIT DESCRIPTION 2-3. IF Amplifi er Circuit 3. Transmitter System The fi rst IF signal is passed through a four-pole mono- 3-1. Microphone Amplifi er Circuit lithic crystal fi lter (XF200) to remove the adjacent channel The signal from microphone amplifi ed by IC301 and goes signal.

  • Page 9: Power Supply

    TK-2000 CIRCUIT DESCRIPTION Note: 4. Frequency Synthesizer Circuit The EEPROM stores tuning data (Deviation, Squelch, 4-1. Frequency Synthesizer etc.). The frequency synthesizer consists of the TCXO (X1), Realign the transceiver after replacing the EEPROM. VCO, PLL IC (IC1) and buffer amplifi ers.

  • Page 10: Semiconductor Data

    TK-2000 SEMICONDUCTOR DATA MCU: F2136ACNKDRD (TX-RX unit IC400) Pin No. Signal Name Function Pin No. Signal Name Function VOXIN VOX level input VREF Reference voltage input CVDET VCO voltage detection MODE Mode select for MCU LSDO Low speed data output...

  • Page 11: Components Description

    TK-2000 COMPONENTS DESCRIPTION TX-RX unit (X57-8093-00) Ref. No. Part Name Description Variable capaci- Ref. No. Part Name Description Frequency control/ VCO tance diode PLL system Variable capaci- Frequency control/ VCO IC200 FM IF system tance diode IC300 Diode TX/RX RF switch...

  • Page 12: Parts List

    TK-2000 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 13 TK-2000 PARTS LIST TX-RX UNIT (X57-8093-00) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C117 CK73FBB1A225K CHIP C 2.2UF C234 CC73HCH1H101J CHIP C 100PF C119 CK73HBB1H102K CHIP C 1000PF C235...
  • Page 14 TK-2000 PARTS LIST TX-RX UNIT (X57-8093-00) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C338 CC73HCH1H331J CHIP C 330PF CD200 L79-1914-05 TUNING COIL C339 CK73HBB1A104K CHIP C 0.10UF DA2J101 DIODE...
  • Page 15 TK-2000 PARTS LIST TX-RX UNIT (X57-8093-00) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L204 LR79F0EDR82G SMALL FIXED INDUCTOR(820NH) RK73HB1J100J CHIP R 1/16W L205 LK73H0BD22NJ SMALL FIXED INDUCTOR(22NH) RK73HB1J392J CHIP R 3.9K...
  • Page 16 TK-2000 PARTS LIST TX-RX UNIT (X57-8093-00) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R216 RK73HB1J470J CHIP R 1/16W R342 RK73HB1J153J CHIP R 1/16W R217 RK73HB1J000J CHIP R 1/16W R344...
  • Page 17 TK-2000 PARTS LIST Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation S402 S6A-0002-00 ROTARY SWITCH(SELECTOR) S400 S70-0414-05 TACT SWITCH(PTT) MIC300 T91-0674-05 MIC ELEMENT TH100 B57331V2104J THERMISTOR TH260 B57331V2104J THERMISTOR L77-3074-05 TCXO (19.2 MHZ)

  • Page 18: Exploded View

    TK-2000 EXPLODED VIEW S400 Cx13 MIC300 J301 J300 VR500 CF200 S402 CD200 TX-RX unit A : N09-2438-05 B : N30-2606-48 C : N83-2005-48 Parts with the exploded numbers larger than 700 are not supplied. If a part reference number is listed in a box on the exploded view of the PCB, that part does not come with the PCB.

  • Page 19: Adjustment

    TK-2000 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifi cations Frequency Range 136 to 174MHz Standard Signal Generator (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1µV to greater than –47dBm/1mV Input Impedance 50Ω RF Power Meter Operation Frequency...
  • Page 20 TK-2000 ADJUSTMENT Frequency and Signaling Preparations for Tuning the Transceiver The transceiver has been adjusted for the frequencies Before attempting to tune the transceiver, connect the shown in the following table. When required, re-adjust them unit to a suitable power supply.
  • Page 21 TK-2000 ADJUSTMENT Common Section Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1. Setting 1) BATT terminal voltage: 7.5V 2) SSG standard modulation [Wide] MOD: 1kHz, DEV: 3kHz [Narrow] MOD: 1kHz, DEV: 1.5kHz 2.
  • Page 22 TK-2000 ADJUSTMENT Receiver Section Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1. Squelch 1) BPF Adj at Center (1 point) TX-RX ANT Check 12dB SINAD or more Level 5 Write SSG output: -118dBm, DEV...
  • Page 23 TK-2000 MEMO...

  • Page 24: Pc Board

    TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Component side view (J7C-0043-00) C322 R367 R392 R360 C345 C523 C329 R393 C134 C139 C353 C517 C355 C326 R136 C316 R340 R329 C319 R377 Q103 C317 C354 R327 C360 D402 R396 R455 C350 R314...
  • Page 25 TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Component side view (J7C-0043-00) C411 R408 R509 – C514 C515 C511 Q301 C502 MIC300 C507 IC503 C506 C513 C312 IC500 D501 C308 C505 R502 IC501 C504 C522 R508 Q306 R505 C145 R410 Q302 Q500...
  • Page 26 TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Foil side view (J7C-0043-00) S401 S400 Side C300 C138 C136 C132 L107 L105 C135 C127 R139 L111 L110 C250 C119 D103 C116 C120 C271 C249 C117 D203 R236 C413 C415 Q204 C247 R234 R228...
  • Page 27 TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Foil side view (J7C-0043-00) R512 R106 C107 C113 C152 R108 C105 R113 C110 C108 C114 C103 R103 Q100 Q102 R114 C112 R101 R102 C102 L100 C119 C100 C116 R100 C120 C117 D100 R222 C262...

  • Page 28: Schematic Diagram

    TK-2000 SCHEMATIC DIAGRAM TX-RX UNIT(X57-8093-00) S2_D S2_E S2_F S1_A S1_B S1_C S 4 0 2 DATA DATA SELECTOR DATA S6A-0002-00 CLOCK CLOCK CLOCK DACLD DACLD DACLD PTTSW PFKEY PFKEY PFKEY LEDR LEDG LSDO LSDO CURRENT STEERING 5 M S DC SW...
  • Page 29 TK-2000 SCHEMATIC DIAGRAM TX-RX UNIT(X57-8093-00) DATA DATA CLOCK CLOCK DACLD DACLD PFKEY PFKEY CURDET LEDR LEDR LEDG LEDG LSDO WID/NAR W/N SW T/RSHF WID: 0V NAR:5.0V WID/NAR VDCSW RSSI PFKEY Q 3 0 5 LTC014YEBFS8 THDET CVDET VOXIN 5MSC R 3 7 5...
  • Page 30 TK-2000 SCHEMATIC DIAGRAM TX-RX UNIT(X57-8093-00) PRI DRIVE R 1 0 2 R:1.03V R: 0V T:1.69V 2 . 2 k T:1.14V BFR193F RF AMP TX/RX SW Q 1 0 0 R 1 5 5 D 1 0 0 C 1 0 0...
  • Page 31 TK-2000 SCHEMATIC DIAGRAM TX-RX UNIT(X57-8093-00) D101 L111 L112 FINAL L108 RN262CS Q102 L107 C126 C127 C131 L105 L106 C135 C137 RD07MUS2BT214 1000p D102 1000p R114 RN262CS DRIVE Hi:1.67V C112 Lo:1.37V Q 1 0 1 R F M 0 1 U 7 P...

  • Page 32: Block Diagram

    TK-2000 BLOCK DIAGRAM X57-8093-00 MB15E03SL-E1 VHF:174.85 136M PLPS PLDL DATA Q4 :MCH3914(7)-H 2SC5108(Y)F D2,3:BBY66-02V CLOCK RF BUFFER LTC014EEBFS8 D5:BBY57-02V 3.3V REG D6:BBY57-02V Q3:LSCR523EBFS8 LSCR523EBFS8 Q2:LTC043ZEBFS8 TUNE D7:DA2J101 FUSE D4:BA892-02V PLUL F500 3.15A 19.2MHz L77-3074-05 RIPPLE BATT+ SHIFT SW TCXO FILTER 7.5V...
  • Page 33 TK-2000 BLOCK DIAGRAM VHF:136MHz~ 174MHz VHF:174.85MHz~212.85MHz (RX) 136MHz~174MHz (TX) D100,D200 Q101 Q102 D101,102,103 Q100 2SC4726(P,Q) 1SS390 RFM01U7P RD07MUS2BT214 BFR193F RN262CS TX/RX RF AMP PRE DRIVE DRIVE AMP FINAL AMP ANT SW RF SW POWC F101 3EBFS8 FUSE 0.5A VDCSW VDC SW...

  • Page 34: Level Diagram

    TK-2000 LEVEL DIAGRAM...

  • Page 35: Specifications

    FM Hum & Noise ..........45dB (Wide) / 40dB (Narrow) Modulation Distortion ........... Less than 5% Guaranted frequency range ......... 144~174MHz (K) Measurements made per TIA/EIA-603 and specifi cations shown are typical. JVC KENWOOD Corporation reserves the right to change specifi cations without prior notice or obligation.
  • Page 36 TK-2000 Communications Systems BU...
  • Page 37 TK-2000 TK-2000 PC BOARD PC BOARD TX-RX UNIT (X57-8093-00) Component side view (J7C-0043-00) TX-RX UNIT (X57-8093-00) Component side view (J7C-0043-00) C322 C411 C322 C411 R367 R367 R392 R392 R408 R360 C345 R408 R360 C345 C523 C329 C523 C329 R393 R393 C134 –...
  • Page 38 TK-2000 TK-2000 PC BOARD PC BOARD TX-RX UNIT (X57-8093-00) Foil side view (J7C-0043-00) TX-RX UNIT (X57-8093-00) Foil side view (J7C-0043-00) S401 S400 Side C300 R512 R106 C107 C113 R108 C152 C105 R113 C110 C108 C114 C138 C136 C132 L107 C103...
  • Page 39 TX-RX UNIT(X57-8093-00) S2_D S2_E S2_F PRI DRIVE S1_A S1_B R 1 0 2 S1_C R:1.03V R: 0V T:1.69V 2 . 2 k T:1.14V BFR193F D101 L111 L112 FINAL RF AMP TX/RX SW Q 1 0 0 L108 RN262CS S 4 0 2 C 42 D 1 0 0 C 1 0 0...
  • Page 40 X57-8093-00 VHF:136MHz~ 174MHz MB15E03SL-E1 VHF:174.85MHz~212.85MHz (RX) PLPS 136MHz~174MHz (TX) PLDL D100,D200 DATA Q4 :MCH3914(7)-H Q100 Q101 Q102 D101,102,103 2SC5108(Y)F 2SC4726(P,Q) 1SS390 RFM01U7P RD07MUS2BT214 D2,3:BBY66-02V BFR193F RN262CS CLOCK RF BUFFER TX/RX RF AMP PRE DRIVE DRIVE AMP FINAL AMP ANT SW RF SW LTC014EEBFS8 D5:BBY57-02V...

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