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
Helical antenna
(T90-1094-05)
Knob (PTT)
(K29-9489-03)
Button knob (Side)
(K29-9490-03)
Plastic cabinet assy
(A02-4135-03)
This product complies with the RoHS directive for the European market.
Knob(Selector)
(K29-9488-03)
Knob (Volume)
(K29-9487-03)
© 2010-10 PRINTED IN JAPAN
B51-8937-00 ( Y ) PDF
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 ......................................17
ADJUSTMENT ...........................................18
TX-RX UNIT (X57-8093-00) ....................22
SCHEMATIC DIAGRAM ............................26
BLOCK DIAGRAM .....................................27
LEVEL DIAGRAM ......................................29
SPECIFICATIONS .................. BACK COVER
This product uses Lead Free solder.

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  • Page 1: Table Of Contents

    VHF FM TRANSCEIVER TK-2000 SERVICE MANUAL © 2010-10 PRINTED IN JAPAN B51-8937-00 ( Y ) PDF CONTENTS Knob(Selector) (K29-9488-03) GENERAL ............2 Knob (Volume) (K29-9487-03) SYSTEM SET-UP .........3 Helical antenna REALIGNMENT ...........3 (T90-1094-05) DISASSEMBLY FOR REPAIR .....6 CIRCUIT DESCRIPTION ......7 SEMICONDUCTOR DATA ......10 COMPONENTS DESCRIPTION ....11...

  • Page 2: General

    Kenwood assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein. Kenwood reserves the right to make changes to any products herein at any time for improvement purposes. GENERAL...

  • Page 3: System Set-Up

    RF power Type Choose the type of transceiver TX/RX 144~174 5.0W TK-2000 K,M A personal computer, programming interface (KPG-22/22A), 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 Note: Frequency (MHz) • You must install the KCT-53U driver in the computer to 152.69375 use the USB adapter (KCT-53U). 152.69500 • When using the USB adapter (KCT-53U) for the first time, 152.70000 plug the KCT-53U into a USB port on the computer with 152.70500...
  • Page 5 TK-2000 REALIGNMENT KPG-22 or KPG-22A or KPG-22A+KCT-53U Illustration is KPG-22. D-SUB D-SUB (25-pin) (9-pin) KCT-53U KPG-22 KPG-22A KPG-22A Transceiver Transceiver Transceiver Gray Gray/Black – 1.5D-XV Lead wire – 1.5D-XV Shield wire Tuning cable (E30-3216-05) Fig. 1 • If the transceivers clone mode is configured as “Disabled”, 4.

  • 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 Configuration The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is 450kHz. The first 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 3. Transmitter System 2-3. IF Amplifier Circuit The first IF signal is passed through a four-pole mono- 3-1. Microphone Amplifier Circuit lithic crystal filter (XF200) to remove the adjacent channel The signal from microphone amplified by IC301 and goes signal.
  • Page 9 TK-2000 CIRCUIT DESCRIPTION 4. Frequency Synthesizer Circuit Note: 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 amplifiers.

  • Page 10: Semiconductor Data

    TK-2000 SEMICONDUCTOR DATA MCU:F2136ACNKDRB (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 HSDO...

  • Page 11: Components Description

    TK-2000 COMPONENTS DESCRIPTION TX-RX unit (X57-8093-00) Ref. No. Part Name Description Ref. No. Part Name Description Variable capaci- Frequency control/ VCO tance diode PLL System IC200 FM IF System Variable capaci- Frequency control/ VCO 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 C119,120 CK73HB1H102K CHIP C 1000PF K C244-246 CK73HB1H102K CHIP C 1000PF K C121 CC73GCH1H330J CHIP C...
  • 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 C403 CC73HCH1H010B CHIP C 1.0PF L77-3074-05 TCXO (19.2 MHZ/8) ✽ C404 CK73HB1A104K CHIP C 0.10UF K...
  • 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 R201 RK73HB1J470J CHIP R 1/16W R337 RK73HB1J000J CHIP R 1/16W R202 RK73HB1J392J CHIP R 3.9K 1/16W...
  • 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 MIC300 T91-0674-05 MIC ELEMENT ✽ DA2S101 DIODE ✽ D2 ,3 1SV325F VARIABLE CAPACITANCE DIODE HSC277 DIODE...

  • Page 17: Exploded View

    TK-2000 EXPLODED VIEW Cx13 S400 J301 J300 MIC300 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 18: Adjustment

    TK-2000 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 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 19 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 20 TK-2000 ADJUSTMENT Common Section Measurement Adjustment Item Condition Specifications / 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. VCO Lock...
  • Page 21 TK-2000 ADJUSTMENT Receiver Section Measurement Adjustment Item Condition Specifications / Remarks Test- Unit Terminal Unit Parts Method equipment 1. Sensitivity 1) Adj item: Low, High (2 points) TX-RX ANT Check 12dB SINAD or more Check SSG output: –115dBm SP/MIC [Narrow] (0.4µV)

  • Page 22: Pc Board

    TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Component side view (J79-0305-09) R367 R392 R360 C345 C523 C329 R393 C134 – C139 MIC30 C353 C517 C355 C326 R136 C316 R340 R329 Q103 C319 R377 R325 C317 C354 R324 R327 C145 R389 R116...
  • Page 23 TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Component side view (J79-0305-09) C411 C514 – R509 C515 MIC300 C502 IC503 IC500 Q301 C312 R508 C513 C308 C505 R502 C504 D501 R505 R511 C145 Q500 C315 C159 C314 R326 R315 F500 R318 C310...
  • Page 24 TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Foil side view (J79-0305-09) S401 S400 Side C300 C138 C136 C132 L107 L105 C135 C127 Q102 L111 R139 C250 L110 C119 D103 C116 C120 C249 C117 D203 R236 C413 C415 Q204 R228 C302 R234...
  • Page 25 TK-2000 PC BOARD TX-RX UNIT (X57-8093-00) Foil side view (J79-0305-09) C300 R106 C107 C113 C152 R108 C105 R113 C110 C108 C114 R102 Q102 R114 C112 C102 L100 C119 C100 C116 R100 C120 C117 D100 Q203 R217 C237 Q204 C232 R225...

  • Page 26: Schematic Diagram

    TK-2000 SCHEMATIC DIAGRAM TX-RX UNIT (X57-8093-00) D101 L111 L112 FINAL L108 HVC131 Q102 L105 L106 L107 C126 C127 D102 C131 C135 C137 RD07MUS2BT112 1000p HVC131 1000p R114 PRI DRIVE DRIVE R 1 0 2 Hi:1.67V R: 0V C112 Lo:1.37V 2 . 2 k Q 1 0 1 R:1.03V...

  • Page 27: Block Diagram

    TK-2000 BLOCK DIAGRAM X57-8093-00 MB15E03SL-E1 VHF:182.85MHz~212.85MHz (RX) 144MHz~174MHz (TX) PLPS PLDL DATA Q4 :MCH3914(7)-H 2SC5108(Y)F 2SC5636 D2,3:1SV325F CLOCK RF BUFFER RF AMP RT1N141U-T111 D5:HVC350B 3.3V REG D6:HVC350B Q3:2SC5383-T111 2SC5383-T111 Q2:RT1N141U-T111 TUNE D7:DA2S101 FUSE D4:HSC277 PLUL F500 3.15A 19.2MHz L77-3074-05 RIPPLE...
  • Page 28 TK-2000 BLOCK DIAGRAM VHF:144MHz~ 174MHz VHF:182.85MHz~212.85MHz (RX) 144MHz~174MHz (TX) D100,D200 Q101 Q102 D101,102:HVC131 Q100 2SC5108(Y)F 2SC5636 HSC277 RFM01U7P RD07MUS2BT112 2SC4926YD D103:RN142S RF BUFFER TX/RX RF AMP PRE DRIVE DRIVE AMP FINAL AMP ANT SW RF SW POWC F101 Q3:2SC5383-T111 T111 D7:DA2S101 0.5A...

  • Page 29: Level Diagram

    TK-2000 LEVEL DIAGRAM...

  • Page 30: Specifications

    Modulation Distortion ........... Less than 5% Measurements made per TIA/EIA-603 and specifications shown are typical. Kenwood reserves the right to change specifications without prior notice or obligation. 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands CA 90801-5745, U.S.A.
  • Page 31 TK-2000 TK-2000 PC BOARD PC BOARD TX-RX UNIT (X57-8093-00) Component side view (J79-0305-09) TX-RX UNIT (X57-8093-00) Component side view (J79-0305-09) C411 R367 R392 R360 C345 C523 C329 C514 R393 C134 – R509 C515 C139 MIC300 C502 IC503 Q301 IC500 C353...
  • Page 32 TK-2000 TK-2000 PC BOARD PC BOARD TX-RX UNIT (X57-8093-00) Foil side view (J79-0305-09) TX-RX UNIT (X57-8093-00) Foil side view (J79-0305-09) S401 S400 Side C300 R106 C107 C113 R108 C152 C105 R113 C110 C108 C114 R102 C138 C136 C132 L107 L105...
  • Page 33 X57-8093-00 VHF:144MHz~ 174MHz MB15E03SL-E1 VHF:182.85MHz~212.85MHz (RX) 144MHz~174MHz (TX) PLPS PLDL D100,D200 DATA D101,102:HVC131 Q4 :MCH3914(7)-H Q100 Q101 Q102 D2,3:1SV325F 2SC5108(Y)F 2SC5636 HSC277 2SC4926YD RFM01U7P RD07MUS2BT112 D103:RN142S CLOCK RF BUFFER TX/RX RF AMP PRE DRIVE DRIVE AMP FINAL AMP ANT SW RF SW RT1N141U-T111 D5:HVC350B...

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