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Kenwood TK-2102G manual

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Table of contents for the manual

  • Page 1

    SERVICE MANUAL VHF FM TRANSCEIVER © 2008-8 PRINTED IN JA PA N B51-8841-00 ( N ) 554 TK - 2 1 0 2 G GENERAL ..................................................... 2 SYSTEM SET -UP ......................................... 2 REALIGNMENT ........................................... 3 DISASSEMBL Y FOR REP AIR ...................... 5 CIRCUIT DESCRIPTION[...]

  • Page 2

    TK - 2 1 02 G 2 INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced techni- cians familiar with similar types of commercial grade com- munications equipment. It contains all required service information for the equipment and is current as of the pub- lication date. Changes which may occur after publication are covered b[...]

  • Page 3

    TK - 2 1 02 G 3 REALIGNMENT 1. Modes User mode PC mode PC test mode PC tuning mode Data programming mode Mode Function User mode For normal use. PC mode Used for communication between the trans- ceiver and PC. Data programming mode Used to read and write frequency data and other features to and from the transceiver . PC test mode Used to check the [...]

  • Page 4

    TK - 2 1 02 G 4 4-5. Programming Software Description The KPG-55D (ver .4.00 or later) is the programming software for the transceiver supplied on a CD-ROM. This software runs under Windows 2000, XP or Vista (32-bit) on a PC. REALIGNMENT PC KPG-22 or KPG-22A or KPG-22A+KCT -53U Illustration is KPG-22 KPG-55D (ver .4.00 or later) T uning cable (E30-[...]

  • Page 5

    TK - 2 1 02 G 5 DISASSEMBL Y FOR REP AIR ■ Removing the case assembly from the chassis 1. Remove the two knobs q , cushion w and three round nuts e . 2. Remove the two screws r . 3. Expand the right and left sides of the bottom of the case assembly , then Iift and remove the chassis from the case assembly t . : @ . . . : ; ; = 4 . T aking care no[...]

  • Page 6

    TK - 2 1 02 G 6 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 oscil- lator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the neces- sary frequencies. Fig. 1 shows the frequencies. 2. Receiver Th[...]

  • Page 7

    TK - 2 1 02 G 7 CIRCUIT DESCRIPTION XF200:L71-0522-05 Item Rating Nominal center frequency 38.850MHz Pass band width ±5.0kHz or more at 3dB 40dB stop band width ±20.0kHz or less Ripple 1.0dB or less Insertion loss 4.0dB or less Guaranteed attenuation 80dB or more at fo -910kHz T erminal impedance 610 Ω /3PF CF200:L72-0958-05 Item Rating Nominal [...]

  • Page 8

    TK - 2 1 02 G 8 CIRCUIT DESCRIPTION Fig. 4 PLL circuit Fig. 6 T ransmit audio and QT/DQT encoder 3) Unlock Detector If a pulse signal appears at the LD pin of IC1, an unlock condition occurs, and the DC voltage obtained from D7, R1, and C1 causes the voltage applied to the UL pin of the mi- croprocessor to go low . When the microprocessor detects t[...]

  • Page 9

    TK - 2 1 02 G 9 CIRCUIT DESCRIPTION 3) VCO and RF Amplifi er The transmit signal obtained from the VCO buffer am- plifi er Q100, is amplifi ed by Q101. This amplifi ed signal is passed to the power amplifi er , Q102 and Q105, which con- sists of a 2-stage FET amplifi er and is capable of producing up to 5W of RF power . (See Fig.7) 4) ANT Swi[...]

  • Page 10

    TK - 2 1 02 G 10 SEMICONDUCTOR DA T A Microprocessor: 38268MCA060GU (TX-RX unit IC403) Pin No. Port Name I/O Function 1,2 VC1,VC2 O V ariable capacity tune control 3N C I N C 4 TIBI I QT/DQT external circuit center point input 5 TI I QT/DQT signal input 6 BUSY I Busy input 7 BA TT l Battery voltage detection 8N C l N C 9 VCCN O Frequency regulation[...]

  • Page 11

    TK - 2 1 02 G 11 COMPONENTS DESCRIPTION Ref. No. Part Name Description IC1 IC Phase locked loop system IC100 IC Automatic power control IC200 IC IF system IC300 IC Audio amp active fi lter IC301 IC Active fi lter IC302 IC Audio power AMP IC400 IC Reset switch IC401 IC EEPROM IC402 IC V oltage detect IC403 IC Microprocessor IC404 IC V oltage regul[...]

  • Page 12

    TK - 2 1 02 G 12 Chip capacitor Code L W T Empty 5.6 ± 0.5 5.0 ± 0.5 Less than 2.0 A 4.5 ± 0.5 3.2 ± 0.4 Less than 2.0 B 4.5 ± 0.5 2.0 ± 0.3 Less than 2.0 C 4.5 ± 0.5 1.25 ± 0.2 Less than 1.25 D 3.2 ± 0.4 2.5 ± 0.3 Less than 1.5 E 3.2 ± 0.2 1.6 ± 0.2 Less than 1.25 F 2.0 ± 0.3 1.25 ± 0.2 Less than 1.25 G 1.6 ± 0.2 0.8 ± 0.2 Less tha[...]

  • Page 13

    TK - 2 1 02 G ✽ 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. T eile ohne Parts No. werden nicht geliefert. L : Scandinavia K : USA P : Canada Y : PX (Far East, Hawaii) T : England E : Eu rope Y : AAFES (Europe) X : Australia M : Oth er[...]

  • Page 14

    TK - 2 1 02 G 14 Ref. No. Ad dress Parts No. Description Desti- nation New parts P ARTS LIST Ref. No. Ad dress Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6020-10) C110 CK73GB1C104K CHIP C 0.10UF K C111,112 CK73GB1H102K CHIP C 1000PF K C113 CC73GCH1H200J CHIP C 20PF J C114-116 CK73GB1H102K CHIP C 1000PF K C118-120 CK73GB1H102K CHI[...]

  • Page 15

    TK - 2 1 02 G 15 P ARTS LIST Ref. No. Ad dress Parts No. Description Desti- nation New parts Ref. No. Ad dress Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6020-10) C422 CK73HB1E103K CHIP C 0.010UF K C423 CK73GB1H102K CHIP C 1000PF K C424 CK73FB1A105K CHIP C 1.0UF K C425 CK73HB1E103K CHIP C 0.010UF K C427 CK73GB1H102K CHIP C 1000PF[...]

  • Page 16

    TK - 2 1 02 G 16 Ref. No. Ad dress Parts No. Description Desti- nation New parts P ARTS LIST Ref. No. Ad dress Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6020-10) R13 RK73GB2A151J CHIP R 150 J 1/10W R14 RK73GB2A101J CHIP R 100 J 1/10W R15 RK73GB2A103J CHIP R 10K J 1/10W R16 RK73GB2A683J CHIP R 68K J 1/10W R17 RK73GB2A104J CHIP R [...]

  • Page 17

    TK - 2 1 02 G 17 P ARTS LIST Ref. No. Ad dress Parts No. Description Desti- nation New parts Ref. No. Ad dress Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6020-10) R339 RK73GB2A822J CHIP R 8.2K J 1/10W R340 RK73GH2A124D CHIP R 120K D 1/10W R341 RK73GB2A104J CHIP R 100K J 1/10W R400 RK73GB2A334J CHIP R 330K J 1/10W R401 RK73GB2A104[...]

  • Page 18

    TK - 2 1 02 G 18 Ref. No. Ad dress Parts No. Description Desti- nation New parts P ARTS LIST Ref. No. Ad dress Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6020-10) Q105 2SK2595-E FET Q106 2SK1824-A FET Q107 DTC114TE DIGIT AL TRANSISTOR Q108 DTC114EE DIGIT AL TRANSISTOR Q109 DTA144EE DIGIT AL TRANSISTOR Q200 DTA114EE DIGIT AL TRANS[...]

  • Page 19

    TK - 2 1 02 G 19 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied. 3 2 1 B A 1 42 43 37 44 41 13 9 33 45 C B B 704 703 Fx2 TX-RX unit Fx3 Fx3 A F A Dx2 E 702 701 700 Fx3 9 53 24 23 25 39 15 10 2 16 8 17 51 49 34 7 27 18 37 A : N09-2438-05 B : N14-0581-44 C : N14-0804-24 D M2.6 x 6 : N30-2606-48 E M2 x 3 : N79-2030-48 F[...]

  • Page 20

    TK - 2 1 02 G 20 P ACKING 3 2 1 D C 56 AC adapter (AC 120V) (W08-0479-25):K 58 AC adapter (AC 230V) (W08-0558-35):M 59 Charger (W08-0598-15) 5 Instruction manual (B62-2103-00) 4 Cap (SP/MIC) (B09-0351-03) 47 Screw set (N99-0396-15) 713 54 Helical antenna (T90-1036-15) 36 Belt clip (J29-0734-05) 715 30 Protection bag (H25-0085-04) 711 712 714 35 SP/[...]

  • Page 21

    TK - 2 1 02 G 21 ADJUSTMENT T est Equipment Required for Alignment T est Equipment Major Specifi cations 1. Standard Signal Generator (SSG) Frequency Range 150 to 174MHz Modulation Frequency modulation and external modulation Output –127dBm/0.1µV to greater than –47dBm/1mV 2. Power Meter Input Impedance 50 Ω Operation Frequency 150 to 174MHz[...]

  • Page 22

    TK - 2 1 02 G 22 ADJUSTMENT Controls Speaker/ microphone jacks Antenna Monitor key PTT switch LED indicator Speaker Microphone Power switch/ Volume control Channel selector Frequency The set has been adjusted for the frequencies shown in the following table. When required, re-adjust them follow- ing the adjustment procedure to obtain the frequencie[...]

  • Page 23

    TK - 2 1 02 G 23 ADJUSTMENT T ransmitter Section Item Condition Measurement Adjustment Specifi cations / Remarks T est- equipment Unit T erminal Unit Parts Method 1. Frequency adjust 1) TEST CH: Center PTT : ON Frequency counter TX-RX ANT Program- ming software: KPG-55D (Windows version: ver .4.00 or later) Center frequency ±50Hz Note: After repl[...]

  • Page 24

    TK - 2 1 02 G 24 ADJUSTMENT Item Condition Measurement Adjustment Specifi cations / Remarks T est- equipment Unit T erminal Unit Parts Method 5. MIC Sensitivity [Wide] 1) TEST CH: Center AG: 1kHz/12mV PTT : ON Power meter Deviation meter Oscillo- scope AG AF VTVM TX-RX ANT SP/MIC connec- tor Check ±2.2kHz~3.8kHz [Narrow] 2) TEST CH: Center PTT : [...]

  • Page 25

    TK - 2 1 02 G 25 ADJUSTMENT Receiver Section Item Condition Measurement Adjustment Specifi cations / Remarks T est- equipment Unit T erminal Unit Parts Method 1. BPF wave adjust 1) TEST CH: Center Spectrum analyzer setting Center frequency: 160MHz Span: 100MHz RBW : 100kHz VBW : 10kHz A TT : 0dB REF: -20dBm TG level: -40dBm Spectrum analyzer T rac[...]

  • Page 26

    26 J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R401 R404 R405 R408 R409 R416 R418 C400 C408 + C409 C411 C412 C413 C415 Q305 Q306 + Q504 CV J79-0166-09 IC400 IC401 IC402 1 3 34 15 + 4 5 IC403 1 25 26 50 51 75 76 100 IC404 AF O G I R500 R501 R503 R504 R507 R509 R510 R511 R514 R327 R520 R332 R341 C500 C502 C505 R541 C507 C509 C330 C332 C336 Q[...]

  • Page 27

    27 JKL M N O P Q R S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R414 R415 R417 R430 R431 56 11 0 C418 SB C420 F500 Q107 0 6 Q307 + + + + G D S D400 D401 R135 R136 ANT R520 R522 R523 MIC500 R528 R146 R530 R531 R535 PTT 5MS R341 R538 C115 B R542 4 5 1 8 C127 C517 C134 C520 C521 C522 C523 C524 C529 MIC AFG SP TXD SP+ SP– 3 6 D500 IC100 C132 Q108 Q500 G D S Q5[...]

  • Page 28

    28 J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R402 R403 R406 R410 C31 R419 R420 R2 3 R426 R427 R429 R239 C50 + R432 R240 R435 R242 C402 C406 C421 C423 S403 MONI S402 PTT C427 C429 C2 5 C252 C253 C254 C255 C256 C257 C259 D4 D2 0 C261 D 2 C262 D203 L102 L105 L107 L108 L109 L111 L113 L115 R102 R112 R115 R117 R120 R123 R127 R128 L C 1 C101 TH[...]

  • Page 29

    29 JKL M N O P Q R S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C20 R210 C25 R212 R213 C28 R215 C29 R216 C32 C34 R223 C38 C39 R228 C41 R230 R231 R233 C200 + + C203 C204 C205 R241 C206 R242 R244 R245 C210 C213 C214 C216 C217 C220 C223 C224 C233 C234 C235 C237 C246 C249 C2 C3 TC1 C6 10 11 12 0 C250 C9 252 253 D200 D202 262 D203 Q3 00 C264 Q303 IC200 R300 R301 [...]

  • Page 30

    30 TK - 2 1 02 G SCHEMA TIC DIAGRAM X57-602 1/4 7 6 5 4 3 2 1 A B C D E -t L4 470n R421 47k R424 3.3k L7 R12 270k C418 0.01u R423 47k C422 0.01u C429 1u R407 1k R21 100k R417 10 TH500 3k C17 330p CP1 1k*4 R406 2.2k Q404 UMG3N R20 1k C7 470p X400 7.3728MHz L77-1761-15 C417 1u C1 0.1u C23 10u6.3 C409 3p C421 0.01u R412 10 R404 0 L402 220n S402 R435 1[...]

  • Page 31

    31 SCHEMA TIC DIAGRAM TK - 2 1 0 2 G X57-602 2/4 J I H G F C306 0.047u C314 1000p R313 100k C312 0.01u(J) C51 1 0.047u R303 R305 18k R523 6.8k C302 0.1u C31 1 10u6.3 R317 270k(D) R31 1 0 R100 3.3k R301 5.6k R516 10k C316 0.01u(J) R320 47k R318 180k R321 22k R323 100k C308 5600p R325 100k R510 3.3k R328 1k R314 470k (D) R304 1M R521 3.3k C303 0.1u R[...]

  • Page 32

    32 TK - 2 1 02 G SCHEMA TIC DIAGRAM X57-602 3/4 K L M N O -t C307 10u6.3 C203 470p R208 680k C209 0.1u C204 4700p C519 4.7u6.3 C526 470p CF200 L72-0958-05 IN OUT C520 0.022u R1 19 4.7k C223 2p R210 470 R207 100k 1 oSCIN 2 oSCoUT 3 MIXoUT 4 VCC 5 IFIN 6 DEC 7 FILoUT 8 FILIN 9 AFoUT 10 QUAD 11 IFoUT 12 RSSI 13 N-DET 14 N-REC 15 GND 16 MIXIN C214 0.01[...]

  • Page 33

    33 SCHEMA TIC DIAGRAM TK - 2 1 0 2 G Note : The components marked with a dot ( • ) are parts of layer 1. X57-602 4/4 7 6 5 4 3 2 1 T S R Q P Q108 DTC1 14EE IC100 NJM2904V-ZB 1 2 3 4 GND 5 6 7 8 V+ MIC500 J500 C335 0.047u C132 470p C531 220p R339 8.2k R539 0 F500 C327 0.1u C337 100u6.3 R538 100 R145 180k L501 C331 0.47u C529 470p R341 100k Q109 DT[...]

  • Page 34

    TK - 2 1 02 G 34 D5 1SV214 -F D1,D2 1SV283F x2 X1 L77-1877 -15 IC1 MB15A02PFV2E1 Q4 2SK1875 -F(V) Q6 2SC5108 (Y)F Q3 2SK1875 -F(V) Q1 0 2SC 5 (Y ) Q2 2SC5108 (Y)F Q403 DTC 144EE 2 M Q5,Q7 2SJ243 -A UMC4 D3,D4 1SV283F x2 IC403 38268MCA060GU IC401 AT24CO8A 10SU18 IC402 R3111N 451C-F Q405 UPA 672T-A IC400 BD4840G -TR IC404 XC6201 P502PR Q1 2SC4649 (N,[...]

  • Page 35

    TK - 2 1 02 G 35 BLOCK DIAGRAM Q100 2SC5108 (Y)F Q101 2SC4988 -E Q102 2SK2596 -E Q105 2SK2595 -E Q106 2SK1824 -A Q108 DTC 114EE Q107 DTC 114EE D101 D104 HSC277 x2 IC100 NJM2904 V-ZB Q104 Q103 UFMMT717 2SK1824 -A Q8,D6 2SC4617 (S) MA2S111 -F Q201 2SC4649 (N,P) Q202 3SK318 Q203 3SK318 Q307 2SK1588 -AZ Q302 2SK1824 -A D502 1SR154 -400 D300 DA221 IC302[...]

  • Page 36

    TK - 2 1 02 G 36 LEVEL DIAGRAM Receiver Section T ransmitter Section SG output level for obtaining 12dB / SINAD when injected to each point through a 470pF coupling capacitor . Measure the 1st Local level on a RF VTVM. Modulate the AF level with a frequency of 1kHz and deviation of 1.5kHz (Narrow), 3kHz (Wide). Then take the signal from the signal [...]

  • Page 37

    TK - 2 1 02 G 37 OPTIONAL ACCESSORIES KNB-14 (Ni-Cd BA TTERY) ■ Schematic Diagram ■ External View ■ External View ■ External View Discharge pin side Breaker (80 ± 5 ° C) Charge pin side Thermistor Diode Breaker (70 ± 5 ° C) KNB-15A (Ni-Cd BA TTERY) ■ Schematic Diagram KNB-20N (Ni-MH BA TTERY) ■ Schematic Diagram Discharge pin side B[...]

  • Page 38

    TK - 2 1 02 G 2967-3, Ishikawa-machi, Hachioji-shi, T okyo, 192-8525 Japan P .O. BOX 22745, 2201 East Dominguez Street, Long Beach, 6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8 Rembrücker Str . 15, 63150 Heusenstamm, Germany Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium KENWOOD House, Dwight Road, W atford, Herts., Amsterdamseweg 37, [...]

  • Page 39

    JKL M N O P Q R S I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R401 R404 R405 R408 R409 R414 R415 R416 R417 R418 R430 R431 56 11 0 C400 C408 + C409 C411 C412 C413 C415 C418 SB C420 F500 Q107 Q305 Q306 Q307 + + + + + G D S D400 D401 Q504 CV J79-0166-09 IC400 IC401 IC402 1 3 34 15 + 4 5 IC403 1 25 26 50 51 75 76[...]

  • Page 40

    JKL M N O P Q R S I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C20 R402 R403 R210 C25 R406 R212 R213 C28 R215 C29 R216 R410 C31 C32 C34 R223 C38 R419 C39 R228 R420 C41 R230 R231 R426 R427 R233 R429 R239 C200 + + C50 + R432 C203 C204 R240 C205 R435 R241 C206 R242 R244 R245 C402 C210 C406 C213 C214 C216 C217 C22[...]

  • Page 41

    -t -t L4 470n C306 0.047u Q108 DTC1 14EE R421 47k C314 1000p R424 3.3k R313 100k C307 10u6.3 L7 R12 270k C418 0.01u R423 47k C422 0.01u C429 1u C312 0.01u(J) R407 1k IC100 NJM2904V-ZB 1 2 3 4 GND 5 6 7 8 V+ R21 100k C203 470p R208 680k C209 0.1u R417 10 TH500 3k C204 4700p C51 1 0.047u MIC500 C17 330p R303 R305 18k C519 4.7u6.3 CP1 1k*4 R406 2.2k Q[...]

  • Page 42

    D5 1SV214 -F D1,D2 1SV283F x2 X1 L77-1877 -15 IC1 MB15A02PFV2E1 Q4 2SK1875 -F(V) Q6 2SC5108 (Y)F Q3 2SK1875 -F(V) Q100 2SC5108 (Y)F Q101 2SC4988 -E Q102 2SK2596 -E Q105 2SK2595 -E Q106 2SK1824 -A Q108 DTC 114EE Q107 DTC 114EE Q2 2SC5108 (Y)F Q403 DTC 144EE D101 D104 HSC277 x2 IC100 NJM2904 V-ZB Q104 Q103 UFMMT717 2SK1824 -A Q8,D6 2SC4617 (S) MA2S11[...]