Kenwood TK-3212 Service Manual
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Kenwood TK-3212 Service Manual

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UHF FM TRANSCEIVER
TK-3212/3217
SERVICE MANUAL
Knob (PTT)
(K29-9308-13)
Button Knob
(Side1/Side2)
(K29-9307-13)
Photo is TK-3212.
Antenna
(T90-1039-15): TK-3212(K,M)
(T90-1040-15): TK-3212(K2,M2)
(T90-0798-25): TK-3217(M)
Knob (CH selector)
(K29-9345-04)
Knob (Volume)
(K29-9309-03)
Cabinet assy
(A02-3894-13)
Key top
(K29-9346-02)
©
2005-1 PRINTED IN JAPAN
B51-8716-00 (S) 971
CONTENTS
GENERAL ............................................................. 2
SYSTEM SET-UP ................................................. 2
OPERATING FEATURES ..................................... 3
REALIGNMENT .................................................... 4
DISASSEMBLY FOR REPAIR .............................. 9
CIRCUIT DESCRIPTION ..................................... 12
SEMICONDUCTOR DATA ................................. 16
COMPONENTS DESCRIPTION ......................... 17
TERMINAL FUNCTION ...................................... 17
PARTS LIST ........................................................ 18
EXPLODED VIEW ............................................... 24
PACKING ............................................................ 25
ADJUSTMENT ................................................... 26
TX-RX UNIT (X57-7130-XX) ......................... 32
SCHEMATIC DIAGRAM ..................................... 36
BLOCK DIAGRAM .............................................. 40
LEVEL DIAGRAM ............................................... 42
KSC-31 / KNB-29N / KBH-10 ............................ 43
SPECIFICATIONS ............................ BACK COVER
This product uses Lead Free solder

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  • Page 1: Table Of Contents

    SCHEMATIC DIAGRAM ........36 BLOCK DIAGRAM ..........40 LEVEL DIAGRAM ..........42 KSC-31 / KNB-29N / KBH-10 ......43 SPECIFICATIONS ......BACK COVER Key top (K29-9346-02) Knob (PTT) (K29-9308-13) Button Knob (Side1/Side2) (K29-9307-13) Photo is TK-3212. This product uses Lead Free solder...

  • Page 2: General

    Unit Model TX-RX Unit Frequency range Remarks & destination TK-3212 K,M X57-7130-10 450~490MHz IF1 : 38.85MHz TK-3212 X57-7130-11 470~512MHz LOC : 38.4MHz TK-3217 X57-7130-21...

  • Page 3: Operating Features

    TK-3212/3217 OPERATING FEATURES @ A key 1. Controls and Functions Press to activate its programmable function. The default setting is None (no function). # <B key Press to activate its programmable function. The default setting is Channel Down. $ C> key Press to activate its programmable function.

  • Page 4: Realignment

    Used to transfer programming data machine. from one transceiver to another. The data can be input to or read from TK-3212/3217 and Self programming You can program the frequency, edited on the screen. The programmed or edited data can be...
  • Page 5 TK-3212/3217 REALIGNMENT 4-3. Operation Cloning Frequency Table 1. To switch the clone slave/s to Clone mode, press and hold MODEL TK-3212 TK-3217 the [<B] key while turning the transceiver power ON. Type K, M K2, M2 Operating 2. Wait for 2 seconds. “CLONE” appears on the LCD, followed Clone Frequency by “FRQTBL 1”.

  • Page 6: Self Programming Mode

    TK-3212/3217 REALIGNMENT ■ Flow Chart (Master transceiver) If you press the [A] key, the least digit of the password is deleted. [<B]+Power ON If you press the [S] key after entering the password in this procedure, "SELF" is displayed if the entered password is...
  • Page 7 TK-3212/3217 REALIGNMENT 5-6. Self Programming Mode flow chart Key operation ■ Channel selection mode flow chart Key Function [Selector] The selected item changes [S]+Power ON Display [Side1] No action When the Read Data password SLF.LOCK.R authorization password is [Side2] No action set to the transceiver.
  • Page 8 TK-3212/3217 REALIGNMENT ■ Item setting mode flow chart 6. Firmware Version Information Display Turn the transceiver ON with the [Side1] and [Side2] keys [1. RX frequency] or Current 450. 00000 held down. Then, the version is displayed during holding the setting value [3.

  • Page 9: Disassembly For Repair

    TK-3212/3217 DISASSEMBLY FOR REPAIR ■ Removing the TX-RX unit from the chassis. Disassembly Procedure 1. Remove the packing from the SP / MIC jack of the TX- ■ Removing the case assembly from the chassis. RX unit. 1. Remove the volume knob and channel knob 2.
  • Page 10 TK-3212/3217 DISASSEMBLY FOR REPAIR ■ Attaching the positive terminal to the chassis. Precautions for Reassembly Always attach the positive terminal to the chassis, using ■ Attaching the battery release lever to the case the following procedures, before mounting the TX-RX unit assembly.
  • Page 11 TK-3212/3217 DISASSEMBLY FOR REPAIR ■ Connecting the speaker wires to the TX-RX unit Note: If the packing of the SP / MIC does not come to the correct position after attaching the chassis to the case 1. To connect the speaker wires, solder them to the speaker assembly, reposition the packing with your fingers.

  • Page 12: Circuit Description

    Fig. 1 shows the frequencies. limiting amplifier, quadrature detector and RSSI (Received Signal Strength Indicator). The second mixer mixes the first TX/RX: 450 ~ 490MHz (TK-3212(K,M)) 450kHz 470 ~ 512MHz (TK-3212(K2,M2)) IF signal with the 38.4MHz of the second local oscillator...
  • Page 13 TK-3212/3217 CIRCUIT DESCRIPTION 6) Squelch phase with the 5 or 6.25kHz reference signal from the phase comparator in IC1. The output signal from the phase Part of the AF signal from the IC enters the FM IC (IC201) comparator is filtered through a low-pass filter and passed again, and the noise component is amplified and rectified to the VCO to control the oscillator frequency.(See Fig.

  • Page 14: Power Supply

    TK-3212/3217 CIRCUIT DESCRIPTION to make both voltages the same. 4. Transmitter System The change of power high/low is carried out by the change 1) Microphone Amplifier of the reference voltage. The signal from the microphone passes through IC301. When encoding DTMF, it is turned OFF for muting the 4) Encode Signalling microphone input signal by IC301.
  • Page 15 TK-3212/3217 CIRCUIT DESCRIPTION A beat sound may be able to be evaded from generation if IC405 R404 “Beat Shift” is set to ON when it is generated in the internal BATT spurious transmission modulated sound of a transceiver. XOUT IC405 BSHIFT Fig.

  • Page 16: Semiconductor Data

    TK-3212/3217 SEMICONDUCTOR DATA Microprocessor : 30620MCP-A00GP (TX-RX UNIT : IC405) ■ Pin function Port Name Function Port Name Function PCTV APC/BPF control data output 46-48 NC DTMF DTMF/ Beep output Channel selector input EEPDAT I/O EEPROM data input/output OPTDET Headset input detect...

  • Page 17: Components Description

    TK-3212/3217 COMPONENTS DESCRIPTION / TERMINAL FUNCTION TX-RX UNIT (X57-7130-XX) Ref. No. Part name Description Ref. No. Part name Description Diode Ripple filter PLL system Varicap Frequency control / TX VCO IC101 Comparator (APC) Varicap Frequency control / RX VCO IC201...

  • Page 18: Parts List

    CK73HB1H471K CHIP C 470PF J69-0352-05 HANDSTRAP ACCESSORY C92-0001-05 CHIP-TAN 0.1UF 35WV ∗ J82-0107-05 C33 ,34 CK73HB1H102K CHIP C 1000PF K AK : TK-3212 (K) AK2 : TK-3212 (K2) AM : TK-3212 (M) AM2 : TK-3212 (M2) BM : TK-3217 (M)
  • Page 19 CHIP C 470PF C215 CK73HB1H102K CHIP C 1000PF K C122 CC73GCH1H330J CHIP C 33PF C216 CK73GB1C104K CHIP C 0.10UF K AK : TK-3212 (K) AK2 : TK-3212 (K2) AM : TK-3212 (M) AM2 : TK-3212 (M2) BM : TK-3217 (M)
  • Page 20 CHIP C 1.5PF AK2,AM2 C405 CC73GCH1H101J CHIP C 100PF C274,275 CC73GCH1H020B CHIP C 2.0PF AK,AM C406 CK73HB1E472K CHIP C 4700PF K AK : TK-3212 (K) AK2 : TK-3212 (K2) AM : TK-3212 (M) AM2 : TK-3212 (M2) BM : TK-3217 (M)
  • Page 21 L40-1263-92 SMALL FIXED INDUCTOR(1.2NH) RK73HB1J474J CHIP R 470K J 1/16W L109 L92-0149-05 CHIP FERRITE RK73HB1J102J CHIP R 1.0K J 1/16W AK : TK-3212 (K) AK2 : TK-3212 (K2) AM : TK-3212 (M) AM2 : TK-3212 (M2) BM : TK-3217 (M)
  • Page 22 J 1/16W R348 RK73GB1J563J CHIP R J 1/16W R218 RK73HB1J561J CHIP R J 1/16W R349 RK73GB1J333J CHIP R J 1/16W AK : TK-3212 (K) AK2 : TK-3212 (K2) AM : TK-3212 (M) AM2 : TK-3212 (M2) BM : TK-3217 (M)
  • Page 23 XC6204B502MR MOS-IC IC403 BD4840FVE MOS-IC IC404 BD4845FVE MOS-IC ∗ IC405 30620MCP-A00GP MICROPROCESSOR IC IC406 AT24128N10SI27 ROM IC IC407 TC7W74FU MOS-IC AK : TK-3212 (K) AK2 : TK-3212 (K2) AM : TK-3212 (M) AM2 : TK-3212 (M2) BM : TK-3217 (M)

  • Page 24: Exploded View

    TK-3212/3217 EXPLODED VIEW MIC1 TX-RX unit CF201 A :N14-0819-04 B :N14-0820-04 C :N30-2604-46 D :N30-2606-46 E :N83-2005-46 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 25: Packing

    (SP/MIC) (B09-0680-03) 702.KNB-29N 42. CARTON BOARD (Ni-MH BATTERY PACK) (H13-2109-03) 41. PACKING FIXTURE (H12-3179-05) 54. BELT CLIP (J29-0713-03) 72. CHARGER (W08-0969-05) 44. ITEM CARTON CASE (H52-2071-02): TK-3212(K,K2,M,M2) (H52-2072-02): TK-3217(M) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 26: Adjustment

    2. Repair Jig (Chassis) power supply and the battery jig, especially while the transceiver transmits. Use jig (part No.: A10-4086-03) for repairing the TK-3212/ 3217. Place the TX-RX unit on the jig and fit it with screws. SCHEMATIC DIAGRAM The jig facilitates the voltage check and protects the final amplifier FET when the voltage on the flow side of the TX-RX unit is checked during repairs.
  • Page 27 450.100MHz following the adjustment procedure to obtain the frequencies High 489.950MHz 489.900MHz you want in actual operation. Low’ 460.050MHz 460.100MHz Frequency (MHz) K, M type (TK-3212) High’ 480.050MHz 480.100MHz Channel No. RX Frequency TX Frequency 470.050 470.100 K2, M2 type (TK-3212) TEST CH 450.050...
  • Page 28 TK-3212/3217 ADJUSTMENT Adjustment Points RSSI BATT+ SP– CN13 PCTV TX-RX unit Foil side TX-RX unit Component side J301 EXT. SP/EXT. MIC BPF : Band-pass wave form test point VR1 : Frequency adjustment CV : VCO lock voltage adjustment terminal TC1 : Transmit VCO lock voltage adjustment...
  • Page 29 TK-3212/3217 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method ±80Hz 4.Max deviation TEST CH: Center Power meter Programming 4.2kHz Adjust Deviation meter SP/MIC connector Software:KPG-100D (According to [Wide] High Oscilloscope the lager +,–) (3 points) AG:1kHz/150mV...
  • Page 30 TK-3212/3217 ADJUSTMENT Receiver Section Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method REF -20.0 dBm MKR 470 MHz 1.BPF Wave (1)Center frequency Spectrum Programming Adjust the 10 dB/ A_View Norm B_Blank Norm -54.63 dBm CENTER 470 MHz...
  • Page 31 TK-3212/3217 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method 2.Sensitivity TEST CH: Low Check 12dB SINAD or more check Center [Wide] High Oscilloscope SSG otuput:–117 dBm(0.3µV) AF VTVM SSG MOD:3.0kHz [Narrow] TEST CH:Center SSG otuput:–115 dBm(0.4µV) SSG MOD:1.5kHz...

  • Page 32: Pc Board

    TK-3212/3217 PC BOARD TX-RX UNIT (X57-7130-XX) Component side view (J72-0968-09) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) C430 L402 TH203 FUSE CP407 F401 L404 C201 CP406 CP404 C405 R211 C401 C215 C217 R416 C402 SP–...
  • Page 33 TK-3212/3217 PC BOARD TX-RX UNIT (X57-7130-XX) Component side view (J72-0968-09) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) J72-0968-09 C424 C406 CN13 R412 R141 Q108 R408 IC101 C403 R131 C408 SP– MIC1 C140 – Q109 R135...

  • Page 34: Pc Board Tx-Rx Unit (X57-7130-Xx)

    PC BOARD TX-RX UNIT (X57-7130-XX) Component side view (J72-0968-09) TX-RX UNIT (X57-7130-XX) Component side view (J72-0968-09) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) J72-0968-09...
  • Page 35 TK-3212/3217 PC BOARD TX-RX UNIT (X57-7130-XX) Foil side view (J72-0968-09) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) J72-0968-09 D104 R256 C268 L228 R254 R253 C156 L223 C254 C168 C267 Q205 C251 D204 D203 C348 R145...
  • Page 36 TK-3212/3217 PC BOARD TX-RX UNIT (X57-7130-XX) Foil side view (J72-0968-09) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) CN201 R470 CD201 XF201 D402 R226 R227 L201 C228 C440 C219 C220 L211 C241 R417 R233 R240 C230...
  • Page 37 PC BOARD TX-RX UNIT (X57-7130-XX) Foil side view (J72-0968-09) TX-RX UNIT (X57-7130-XX) Foil side view (J72-0968-09) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) -10 : TK-3212 (K,M) -11 : TK-3212 (K2,M2) -21 : TK-3217 (M) J72-0968-09...

  • Page 38: Tx-Rx Unit (X57-7130-Xx)

    TK-3212/3217 SCHEMATIC DIAGRAM TX-RX UNIT (X57-7130-XX) PLL SYSTEM MB15A02 4.82V 470p 4.76V RIPPLE FILTER MA2S111 VR1 68k R12-7491-05 0.01u L77-1931-05 4.72V 12.8MHz OSCIN oUTPUT 4.7u 2.2k LCD ASSY (B38-0906-15) TXCO QTTCXO PLL_UL PLL_STB PLL_DAT PLL_CLK L401 F401 BATT F53-0324-05 D402 2.5A...

  • Page 39: Schematic Diagram

    TK-3212/3217 SCHEMATIC DIAGRAM TX-RX UNIT (X57-7130-XX) D2,4,6,7 FREQUENCY RF BUFFER AMP 220n VCO OSCILLATION (TX) CONTROL T:3.37V HVC376B 2.74V /TX VCO 0.72V 2SC5108(Y) 100n 0.5p HVC376B VCO/TX 2SK508NV(K52) 3.7V 2SC5108(Y) PLL IC F_IN AMP RT1P430U R:4.97V T:0.58V TX MODULATION MODULATOR...
  • Page 40 TK-3212/3217 SCHEMATIC DIAGRAM TX-RX UNIT (X57-7130-XX) RF AMP T:4.96V D101,202 Q101 T:4.81V 2SK3077 C112 R112 R111 TX/RX RF AMP R:0V RF SW R103 C107 T:2.846V 4.62V 3.86V 2SC4619 D101 C101 C102 Q100 470p HSC277 2SC4619 RF AMP R:2.934V T:3.002V R453 T:4.96V...
  • Page 41 TK-3212/3217 SCHEMATIC DIAGRAM ● Note : The components marked with a dot ( ) are parts of layer1. TX-RX UNIT (X57-7130-XX) D103,122 ANT SW D122 TX DRIVE AMP TX FINAL AMP C160 C163 C166 R456 Q102 R:7.61V Q103 HVC131 T:1.36V 2SK2596 T:7.26V...
  • Page 42 TK-3212/3217 SCHEMATIC DIAGRAM ● Note : The components marked with a dot ( ) are parts of layer1. TX-RX UNIT (X57-7130-XX) D2,4,6,7 D103,122 FREQUENCY RF BUFFER AMP ANT SW VCO OSCILLATION (TX) 220n CONTROL HVC376B T:3.37V 2.74V D122 /TX VCO 0.72V...

  • Page 43: Block Diagram

    TK-3212/3217 BLOCK DIAGRAM X57-713 IC404 BD4845FVE IC403 BD4840FVE IC1 MB15A02 PLL_DAT RESET PLL_CLK RESET PLL_STB D401 RB521S-30 IC401 XC6204B502MR Q4 2SK508NV(K52) D2,D4,D6,D7 HVC3768 D10 1SV278 PROTECT Loop Q405 RT1P237U Filter Q5 RT1P430U 12.8MHz 5C_C L77-1931-05 Q403 CPH3317 QTTCXO Q3 2SK508NV(K52)
  • Page 44 TK-3212/3217 BLOCK DIAGRAM TX/RX:450.00~490.00MHz (TK-3212(K,M)) TX/RX:470.00~512.00MHz (TK-3212(K2,M2)) TX/RX:440.00~480.00MHz (TK-3217(M)) Q2 2SC5108(Y) Q6 2SC5108(Y) Q9 2SC4619 D101,D202 HSC277 Q100 2SC4619 Q101 2SK3077 Q102 2SK2596 Q103 2SK3476 D122,D103,D104,D106 HVC131 BUFF Q104 RT1N141U Q109 RT1P441U IC101 TA75W01FU Q105 2SK879(Y) CURRENT Q108 2SK1824 DCSW...

  • Page 45: Level Diagram

    TK-3212/3217 LEVEL DIAGRAM...

  • Page 46: Ksc-31 / Knb-29N / Kbh-10

    TK-3212/3217 KSC-31 / KNB-29N / KBH-10 KSC-31 (RAPID CHARGER) KNB-29N (Ni-MH BATTERY PACK) ■ External View ■ External View ■ Specifications Voltage ....7.2V (1.2V x 6) Battery capacity ... 1500mAh ■ Specifications ■ Schematic Diagram Charging current ....850mA ±5% Charging time .....

  • Page 47: Specifications

    KENWOOD ELECTRONICS SINGAPORE PTE LTD. 13, Boulevard Ney, 75018 Paris, France 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands...

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Tk-3217

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