Kenwood TK-3140 Service Manual
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Kenwood TK-3140 Service Manual

Uhf fm transceiver
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UHF FM TRANSCEIVER
TK-3140
SERVICE MANUAL
Knob (PTT)
(K29-9131-03)
Key top
(SW1,SW2)
(K29-9132-03)
Does not come with antenna.
Antenna is available as an option.
Antenna
GENERAL ................................................................................. 2
(KRA-23:option)
SYSTEM SET-UP ..................................................................... 2
Knob (ENC)
OPERATING FEATURES ......................................................... 3
(K29-9134-03)
REALIGNMENT ........................................................................ 4
CIRCUIT DESCRIPTION .......................................................... 6
Knob (VOL)
SEMICONDUCTOR DATA ..................................................... 12
(K29-9133-03)
DESCRIPTION OF COMPONENTS ....................................... 13
PARTS LIST ............................................................................ 14
EXPLODED VIEW .................................................................. 22
PACKING ................................................................................ 23
ADJUSTMENT ........................................................................ 24
TERMINAL FUNCTION .......................................................... 34
SCHEMATIC DIAGRAM ......................................................... 45
BLOCK DIAGRAM .................................................................. 49
LEVEL DIAGRAM ................................................................... 51
KSC-25.................................................................................... 52
KNB-24L,KNB-25A,KNB-26N,KRA-23 .................................... 55
SPECIFICATIONS ............................................... BACK COVER
Cabinet assy
(A02-3653-04)
©
2001-10 PRINTED IN JAPAN
B51-8603-00 (S) 1422
CONTENTS
TX-RX UNIT (X57-6410-10) .............................................. 35

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  • Page 1: Table Of Contents

    UHF FM TRANSCEIVER TK-3140 SERVICE MANUAL © 2001-10 PRINTED IN JAPAN B51-8603-00 (S) 1422 CONTENTS Antenna GENERAL ................. 2 (KRA-23:option) SYSTEM SET-UP ..............2 Knob (ENC) OPERATING FEATURES ............3 (K29-9134-03) REALIGNMENT ................ 4 CIRCUIT DESCRIPTION ............6 Knob (VOL) SEMICONDUCTOR DATA .............

  • Page 2: General

    License and frequency allocated by FCC Frequency range (MHz) RF power Type Choose the type of transceiver TX/RX 450~490 TK-3140 K 4.0W Transceiver programming A personal computer (IBM PC or compatible), programming interface (KPG-36), and programming software (KPG-74D) are required for programming.

  • Page 3: Operating Features

    1. Operation Features This red LED lights during transmission. If programmed by The TK-3140 is an UHF FM radio designed to operate in your dealer, when the battery pack power is low, the LED both trunking format and conventional format. The flashes during transmission.

  • Page 4: Realignment

    TK-3140 OPERATING FEATURES / REALIGNMENT REALIGNMENT i t c 1. Modes User mode Panel test mode Panel tuning mode l a i PC mode Data programming mode Firmware programming mode PC tuning mode PC test mode Clone mode Self programming...
  • Page 5 3. Set the firmware to be updated by file name item. blinking. 4. Turn the TK-3140 power ON with the [S] switch held down. When data receiving to transceiver, the green LED is blinking. When "PROG 57600" appears, release your finger from the switch.

  • Page 6: Circuit Description

    TK-3140 CIRCUIT DESCRIPTION 1. Overview off) and then the bandpass filter (L215,217). High pass filter HPF (L219) the 1st image response improve. And the bandpass This transceiver is UHF/FM portable transceiver designed to filter is adjusted by a variable capacitor. The input voltage to...
  • Page 7 TK-3140 CIRCUIT DESCRIPTION 3-4. Audio amplifier circuit Center Frequency Nominal 455kHz Min. ±4.5kHz The demodulated signal from IC200 goes through the mute Band Width Max. ±10.0kHz switch (Q204) and is amplified by IC300 (2/2), high-pass filtered, 40dB ±100kHz low-pass filtered, high-pass filtered, band-eliminate filtered, and Stop Band Attenuation Min.
  • Page 8 TK-3140 CIRCUIT DESCRIPTION 3-5. Squelch circuit The output signal from the summing amplifier passes The output from IC200 enters FM IC again, then passed through the D/A converter (IC307) again and goes to the VCO through a band-pass filter. And passed through a band-pass modulation input.
  • Page 9 8 of the PLL IC. from the memory circuit. The TK-3140’s VCO consists of 2VCO and covers a dual 3) Sending frequency program data to the PLL. range of the 405.15~445.15MHz (K), and the 450~490MHz (K).
  • Page 10 TK-3140 CIRCUIT DESCRIPTION 7-2. Decode 7. Signalling Circuit Low-speed data (QT,DQT,LTR) 7-1. Encode The demodulated signal from the IF IC (IC200) is amplified Low-speed data (QT,DQT,LTR) by IC300 (2/2) and passes through a low-pass filter (IC306) to Low-speed data is output from pin 1 of the CPU. The signal remove audio components.
  • Page 11 TK-3140 CIRCUIT DESCRIPTION 8. Power Supply Circuit Battery +B is supplied via a 3A fuse from the battery terminal connected to the TX-RX unit. After passing through the power switch, power supply (SB) is applied to the three AVRs. IC5 supplies 5V (5M) to the control circuit, and IC9 supplies 5V (5C) to common circuits.

  • Page 12: Semiconductor Data

    TK-3140 SEMICONDUCTOR DATA Microprocesser : 30620M8A-XXXGP (TX-RX UNIT : IC309) Pin function Port Port Function Function Name Name LSDO Low speed data output. (QT/DQT/LTR) HSDO High speed data output. (DTMF) Flash memory address bus. HSDI High speed data input. (2Tone) GND.

  • Page 13: Description Of Components

    TK-3140 DESCRIPTION OF COMPONENTS TX-RX UNIT (X57-6410-10) Ref. No. Use/Function Operation/Condition Ref. No. Use/Function Operation/Condition MOS IC PLL IC Q306 TRANSISTOR TX LED switch IC100 MOS IC APC AMP Q307 Int/Ext switch IC200 MOS IC IF IC Q308 Int/Ext switch...

  • Page 14: Parts List

    TK-3140 PARTS LIST CAPACITORS CC 45 TH 1H Capacitor value Color* CC45 010 = 1pF 0 = 22pF 100 = 10pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating Multiplier 2 = Shape ... round, square, ect.
  • Page 15 TK-3140 PARTS LIST ∗ New Parts. indicates safety critical components. Parts without Parts No. are not supplied. her Areas Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. TX-RX UNIT (X57-6410-10)
  • Page 16 TK-3140 PARTS LIST TX-RX UNIT (X57-6410-10) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts CK73HB1H102K CHIP C 1000PF C203-205 CK73HB1A104K CHIP C 0.10UF CC73HCH1H330J CHIP C 33PF C206 CK73HB1C103K CHIP C 0.010UF K...
  • Page 17 TK-3140 PARTS LIST TX-RX UNIT (X57-6410-10) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C275 CC73HCH1H101J CHIP C 100PF C352-354 CK73HB1A104K CHIP C 0.10UF C276 CK73HB1H471K CHIP C 470PF C355 C92-0628-05 CHIP-TAN...
  • Page 18 TK-3140 PARTS LIST TX-RX UNIT (X57-6410-10) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C529 CK73GB1H562J CHIP C 5600PF L202 L40-5681-86 SMALL FIXED INDUCTOR(0.56UH) C530 CK73FB0J475K CHIP C 4.7UF L203 L92-0163-05 BEADS CORE...
  • Page 19 TK-3140 PARTS LIST TX-RX UNIT (X57-6410-10) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts RK73HH1J333D CHIP R D 1/16W R219 RK73HB1J224J CHIP R 220K J 1/16W RK73HH1J104D CHIP R 100K D 1/16W...
  • Page 20 TK-3140 PARTS LIST TX-RX UNIT (X57-6410-10) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R318 RK73HB1J104J CHIP R 100K J 1/16W R388 RK73HB1J474J CHIP R 470K J 1/16W R319 RK73HB1J473J CHIP R...
  • Page 21 TK-3140 PARTS LIST TX-RX UNIT (X57-6410-10) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R619 R92-1368-05 CHIP R 0 OHM 2SJ347 R620 RK73HB1J473J CHIP R J 1/16W 2SC5108(Y) TRANSISTOR R621 R92-1368-05 CHIP R...

  • Page 22: Exploded View

    TK-3140 EXPLODED VIEW TX-RX UNIT SUB PCB Parts with the exploded numbers larger than 700 are not supplied.

  • Page 23: Packing

    TK-3140 PACKING 40 Item carton case (H52-1816-02) 9 Instruction manual (B62-1476-10) 48 Belt hook (J29-0688-05) A Dressed screw accessory (N08-0548-04) 6 Cap (B09-0625-03) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 24: Adjustment

    TK-3140 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications Standard Signal Generator Frequency Range 400 to 512MHz (SSG) Modulation Frequency modulation and external modulation. Output -127dBm/0.1µV to greater than -47dBm/1mV Power Meter Input Impedance 50Ω. Operation Frequency 400 to 512MHz or more.
  • Page 25 TK-3140 ADJUSTMENT • Panel tuning Removing the front panel After removing the battery pack, knobs, and antenna, remove the 2 screws from the back of the transceiver. Lift the chassis away from the bottom part gently, then pull out the chassis as shown below.
  • Page 26 How to assemble the antenna connector and its Repair Jig (Chassis) terminal. Use jig (part No.: A10-4060-04) for repairing the TK-3140. The antenna connector and its terminal are supplied as Place the TX-RX unit on the jig and fit it with screws.
  • Page 27 TK-3140 ADJUSTMENT • Sub LCD indicator Test Mode “FCN” appears at Function ON. Test mode operating features “n” appears at Narrow ON. This transceiver has a test mode. To enter test mode, press [A] key and turn power on. Hold [A] key until test Frequency and signalling channel No.
  • Page 28 TK-3140 ADJUSTMENT LCD display (Test mode) LCD display (Tuning mode) FREQ channel No. Signalling No. Adjustment item Adjustment value (1~256) Press [S], now in tuning mode. Use [2 B] button to write Panel Tuning Mode frequency table tuning data through tuning modes, and channel selector knob to adjust tuning requirements (1 to 256 appears on LCD).
  • Page 29 TK-3140 ADJUSTMENT Common Section Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 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 [Panel Test Mode] ±0.1V...
  • Page 30 TK-3140 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 6. DQT Balance 1) Adj item [BAL] Power meter Panel Panel Encoder Make the Adjust Adjust [∗∗∗] Dev meter Universal knob demodulation [Wide] LPF:3kHz Oscilloscope...
  • Page 31 TK-3140 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method ±0.1kHz 11.LTR 1) Adj item [FLTR] Power meter Panel Panel Encoder 1.0kHz Deviation Adjust [∗∗∗] Dev meter Universal knov Adjust LPF:3kHz Oscilloscope connector HPF:OFF [Wide]...
  • Page 32 TK-3140 ADJUSTMENT Receiver Section Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method Adjustment 1. Sensitivity 1) Adj item [SENS] Tracking Panel Panel Encoder Turn a knob and make “fo” Adjust Adjust [∗∗∗] generator knob level 1dB above from peak (BPF level.
  • Page 33 TK-3140 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 5. Squelch 1) Adj item [T SQL] Panel Encoder Adjust to point Adjust Adjust [∗∗∗] AF VTVM Universal knob of opening 2) Adj item Oscilloscope connector squelch.

  • Page 34: Terminal Function

    TK-3140 TERMINAL FUNCTION CN No. Pin No. Name I/O Function CN No. Pin No. Name I/O Function TX-RX UNIT (X57-6410-10): TX-RX section CN400 S_DET Battery detect input CN301 Not used AUXKEY AUX key input Serial data input Serial data output...

  • Page 35: Pc Board Views

    TK-3140 PC BOARD VIEW TX-RX UNIT (X57-6410-10) Component Side View J72-0807-09 CN500 MMUTE MICI 5CNS AFSTB C555 AFREG1 AFREG2 TXHSD AFDET TXAF AFMSKE RXAFI AFTRD AFRTM HSDIN AFRDT C554 RXAFO AFCLR XOUT C501 C502 R501 C503 R502 C504 Component side...
  • Page 36 TK-3140 PC BOARD VIEW TX-RX UNIT (X57-6410-10) Foil Side View TX-RX UNIT (X57-6410-10) X500 J72-0807-09 R515 C519 C515 C536 CP500 CP501 C557 R519 R528 C556 R523 R529 R525 C527 IC500 C528 C543 C530 C529 C506 R500 C526 C521 R509 Q500...
  • Page 37 TK-3140 PC BOARD VIEW TX-RX UNIT (X57-6410-10) Component Side View + Foil Side View TX-RX UNIT (X57-6410-10) X500 J72-0807-09 C515 C519 R515 C536 CN500 CP501 CP500 C557 R519 R528 C556 R523 MMUTE MICI 5CNS AFSTB C555 AFREG1 R529 AFREG2 TXHSD...
  • Page 38 TK-3140 PC BOARD VIEW TX-RX UNIT (X57-6410-10) (A/3) Component Side View TX-RX UNIT (X57-6410-10) L314 L315 CN305 C375 R388 D302 L311 IC312 IC311 – C349 C362 R319 C352 R371 C354 C364 R316 R381 C371 C313 Q305 R380 C389 Q307 R364...
  • Page 39 TK-3140 PC BOARD VIEW TX-RX UNIT (X57-6410-10) (A/3) Foil Side View TX-RX UNIT (X57-6410-10) C329 X200 R231 CF200 R232 C212 R238 L201 XF202 R226 C249 R253 L203 R276 R208 C280 C225 C250 C290 IC200 C230 C232 R326 C281 C235 L210...
  • Page 40 TK-3140 PC BOARD VIEW 30620M8A-2N3GP XC61CN5002NR LC73872M TA31136FN TDA7053AT TA75W01FU TC75W51FU TX-RX UNIT (X57-6410-10) (A/3) Component Side View + Foil Side View TX-RX UNIT (X57-6410-10) L314 C329 L315 X200 CN305 C375 R388 D302 L311 IC312 IC311 R231 – C349 C362...

  • Page 41: Schematic Diagram

    TK-3140 SCHEMATIC DIAGRAM • Note) Ref. No. : Parts of pattern 1.

  • Page 42: Block Diagram

    TK-3140 TK-3140 BLOCK DIAGRAM...

  • Page 43: Level Diagram

    TK-3140 TK-3140 LEVEL DIAGRAM KSC-25 KSC-25 Power on (LED : off) Circuit Description Initialization Charger Flow chart Abnormal output terminals Red LED flash shorted? reset? No (LED : off) LED color : Red LED color : Red Battery insert (LED color : Red)

  • Page 44: Ksc-25

    TK-3140 KSC-25 KSC-25 PC BOARD VIEWS CHARGER UNIT (W02-3641-08) Component side view JK10 CHARGER UNIT (W02-3641-08) Foil side view...
  • Page 45 TK-3140 KSC-25 KSC-25 Schematic Diagram...

  • Page 46: Knb-24L,Knb-25A,Knb-26N,Kra-23

    TK-3140 KSC-25 / KNB-24L / KNB-25A / KNB-26N / KRA-23 KSC-25 PARTS LIST ∗ New Parts. indicates safety critical components. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert.

  • Page 47: Specifications

    KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD. KENWOOD ELECTRONICS U.K. LIMITED Sales Marketing Division KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands...

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