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VHF FM TRANSCEIVER
TK-2102G
SERVICE MANUAL
© 2008-8 PRINTED IN JA PAN
( )
B51-8841-00 N 554
Knob (CH)
(K29-5278-03)
Helical antenna
(T90-1036-15)
Knob (VOL)
(K29-5255-03)
Plastic cabinet assy
(A02-4049-03)
CONTENTS
GENERAL .....................................................2 PC BOARD
SYSTEM SET-UP .........................................2 TX-RX UNIT (X57-6020-10) .................26
REALIGNMENT ...........................................3 SCHEMATIC DIAGRAM ............................30
D
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TK-2102G Document Copyrights Disclaimer Copyright 2008 by Kenwood Corporation. All rights re- While every precaution has been taken in the preparation served. of this manual, Kenwood assumes no responsibility for er- No part of this manual may be reproduced, translated, rors or omissions. Neither is any liability assumed for dam- distributed, or transmitted in any form or by any means, ages resulting from the use of the information contained electronic, mechanical, photocopying, recording, or
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TK-2102G REALIGNMENT 1. Modes 4. PC Mode 4-1. Preface User mode The transceiver is programmed by using a personal com- PC mode Data programming mode puter, a programming interface (KPG-22/22A), USB adapter (KCT-53U) and programming software (KPG-55D (ver.4.00 or PC test mode PC tuning mode later)). The programming software can be used with a PC. Fig- ure 1 shows the setup of a PC for programming. Mode Function User mode For normal use. 4-2. Connection Procedure Used for communication between t
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TK-2102G REALIGNMENT 4-5. Programming Software Description 4-6. Programming with PC The KPG-55D (ver.4.00 or later) is the programming If data is transferred to the transceiver from a PC with software for the transceiver supplied on a CD-ROM. This the KPG-55D (ver.4.00 or later), the data for each set can be software runs under Windows 2000, XP or Vista (32-bit) on modifi ed. a PC. Data can be programmed into the EEPROM in RS-232C format via the SP/MIC jack. In this mode the PTT line operate a
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TK-2102G DISASSEMBLY FOR REPAIR ■ Removing the case assembly from the chassis ■ Removing the TX-RX unit from the chassis 1. Remove the two knobs q, cushion w and three round 1. Remove the eleven screws u. nuts e. 2. Remove the VOL/CH FPC from the TX-RX unit connector 2. Remove the two screws r. (CN400) i. 3. Expand the right and left sides of the bottom of the case 3. Remove the solder from the antenna terminal using a assembly, then Iift and remove the chassis from the case soldering iron, th
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TK-2102G CIRCUIT DESCRIPTION The PLL circuit in the transmitter generates the neces- 1. Frequency Confi guration sary frequencies. Fig. 1 shows the frequencies. 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. CF 450kHz ANT MCF RF AF ANT SW IF SYSTEM SP AMP AMP 38.4MHz 38.85MHz X3 multiply TCXO 12.8MHz RX PLL MIC PA MIC TX VCO AMP AMP AMP TX Fig. 1 Frequency confi guration (L208, L2
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TK-2102G CIRCUIT DESCRIPTION XF200:L71-0522-05 CF200:L72-0958-05 Item Rating Item Rating Nominal center frequency 38.850MHz Nominal center frequency 450kHz Pass band width ±5.0kHz or more at 3dB 6dB band width ±6.0kHz or more 40dB stop band width ±20.0kHz or less 50dB band width ±12.5kHz or less Ripple 1.0dB or less Ripple 2.0dB or less at fo ±4kHz Insertion loss 4.0dB or less Insertion loss 6.0dB or less Guaranteed attenuation 80dB or more at fo -910kHz Guaranteed attenuation 35.0dB or more at
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TK-2102G CIRCUIT DESCRIPTION D2 in transmit mode and D3 and D4 in receive mode). The 2) VCO T/R pin is set high in receive mode causing Q5 and Q7 to The operating frequency is generated by Q4 in transmit turn Q4 off, and turn Q3 on . The T/R pin is set low in trans- mode and Q3 in receive mode. The oscillator frequency is mit mode. The outputs from Q3 and Q4 are amplifi ed by Q6 controlled by applying the VCO control voltage, obtained and sent to the buffer amplifi ers. from the phase compar
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TK-2102G CIRCUIT DESCRIPTION 3) VCO and RF Amplifi er 4) ANT Switch and LPF The transmit signal obtained from the VCO buffer am- The RF amplifi er output signal is passed through a low- plifi er Q100, is amplifi ed by Q101. This amplifi ed signal is pass fi lter network and a transmit/receive switching circuit passed to the power amplifi er, Q102 and Q105, which con- before it is passed to the antenna terminal. The transmit/ sists of a 2-stage FET amplifi er and is capable of producing receive switchin
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TK-2102G SEMICONDUCTOR DATA Microprocessor: 38268MCA060GU (TX-RX unit IC403) Pin No. Port Name I/O Function Pin No. Port Name I/O Function 1,2 VC1,VC2 O Variable capacity tune control Control of power supply (5M) for everything except the 3NC I NC 61 5MC O microprocessor and EEPROM QT/DQT external circuit center point L : Power supply ON 4 TIBI I input 62 AFCO O AF amp power suppIy H : ON 5 TI I QT/DQT signal input 63 RX O TX/RX VCO select H : RX 6 BUSY I Busy input 64 GLED O Green LED control
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TK-2102G COMPONENTS DESCRIPTION TX-RX unit (X57-6020-10) Ref. No. Part Name Description Ref. No. Part Name Description IC1 IC Phase locked loop system Q503 Transistor MIC mute/ AGC IC100 IC Automatic power control Q504 Transistor DC switch Variable capacitance IC200 IC IF system D1~4 Frequency control diode IC300 IC Audio amp active fi lter Variable capacitance D5 TX modulation IC301 IC Active fi lter diode IC302 IC Audio power AMP D6 Diode Current steering IC400 IC Reset switch D7 Diode Unlock
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W TK-2102G PARTS LIST C C 4 5 T H 1 H 2 2 0 J CC45 Color* 1 2 3 4 5 6 010 = 1pF 2 2 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value 101 = 100pF Multiplier 3 = Temp. coefficient 6 = Tolerance 102 = 1000pF = 0.001μF 2nd number 103 = 0.01μF 1st number 1st Word C L P R S T U 2nd Word G H J K L Color* Black Red Orange Yellow Green Blue Violet ppm/°C ±30 ±60 ±120 ±250 ±500 ppm/°C 0 –80 –150 –220 –330 –470
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TK-2102G 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 : Eu rope Les articles non mentionnes dans le Parts No. ne sont pas fournis. Y : AAFES (Europe) X : Australia M : Oth er Areas Teile ohne Parts No. werden nicht geliefert. TK-2102G (Y50-6410-XX) TX-RX UNIT (X57-6020-10) New Desti- New Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No.
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TK-2102G PARTS LIST TX-RX UNIT (X57-6020-10) New Desti- New Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C110 CK73GB1C104K CHIP C 0.10UF K C241 CC73GCH1H040B CHIP C 4.0PF B C111,112 CK73GB1H102K CHIP C 1000PF K C243 CC73GCH1H020C CHIP C 2.0PF C C113 CC73GCH1H200J CHIP C 20PF J C245,246 CK73GB1H102K CHIP C 1000PF K C114-116 CK73GB1H102K CHIP C 1000PF K C247 CC73GCH1H200J CHIP C 20PF J C118-120 CK73GB1H102K CHIP
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TK-2102G PARTS LIST TX-RX UNIT (X57-6020-10) New Desti- New Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C422 CK73HB1E103K CHIP C 0.010UF K L8,9 L40-6891-86 SMALL FIXED INDUCTOR (6.8UH) C423 CK73GB1H102K CHIP C 1000PF K L10 L33-0744-05 SMALL FIXED INDUCTOR C424 CK73FB1A105K CHIP C 1.0UF K L11 L33-0745-05 SMALL FIXED INDUCTOR C425 CK73HB1E103K CHIP C 0.010UF K L12 L40-1085-92 SMALL FIXED INDUCTOR (100NH) C427 CK
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TK-2102G PARTS LIST TX-RX UNIT (X57-6020-10) New Desti- New Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R13 RK73GB2A151J CHIP R 150 J 1/10W R212 RK73GB2A330J CHIP R 33 J 1/10W R14 RK73GB2A101J CHIP R 100 J 1/10W R213 RK73GB2A000J CHIP R 0.0 J 1/10W R15 RK73GB2A103J CHIP R 10K J 1/10W R214 RK73GB2A103J CHIP R 10K J 1/10W R16 RK73GB2A683J CHIP R 68K J 1/10W R215 RK73GB2A271J CHIP R 270 J 1/10W R17 RK73GB2A104J C
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TK-2102G PARTS LIST TX-RX UNIT (X57-6020-10) New Desti- New Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R339 RK73GB2A822J CHIP R 8.2K J 1/10W R527 RK73GH2A163D CHIP R 16K D 1/10W R340 RK73GH2A124D CHIP R 120K D 1/10W R528 RK73GB2A754J CHIP R 750K J 1/10W R341 RK73GB2A104J CHIP R 100K J 1/10W R529 RK73GB2A183J CHIP R 18K J 1/10W R400 RK73GB2A334J CHIP R 330K J 1/10W R530 RK73GB2A101J CHIP R 100 J 1/10W R401 RK7
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TK-2102G PARTS LIST TX-RX UNIT (X57-6020-10) New Desti- New Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation Q105 2SK2595-E FET Q106 2SK1824-A FET Q107 DTC114TE DIGITAL TRANSISTOR Q108 DTC114EE DIGITAL TRANSISTOR Q109 DTA144EE DIGITAL TRANSISTOR Q200 DTA114EE DIGITAL TRANSISTOR Q201 2SC4649(N,P) TRANSISTOR Q202,203 3SK318 FET Q300 2SC4617(S) TRANSISTOR Q302 2SK1824-A FET Q303 DTA144EE DIGITAL TRANSISTOR Q304
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TK-2102G EXPLODED VIEW A B C 44 13 43 37 B 41 42 1 37 B 1 9 53 9 33 704 45 Fx3 703 Fx3 24 Fx3 21 X57 Fx2 19 104 27 23 X57 X57 A 2 105 102 TX-RX 7 unit X57 X57 A 18 103 101 F X57 106 51 39 25 34 49 15 22 12 10 700 3 2 Dx2 16 A : N09-2438-05 8 17 B : N14-0581-44 C : N14-0804-24 E D M2.6 x 6 : N30-2606-48 E M2 x 3 : N79-2030-48 F M2 x 5 : N83-2005-48 702 701 Parts with the exploded numbers larger than 700 are not supplied. 19
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TK-2102G PACKING C D 5 Instruction manual (B62-2103-00) 711 59 Charger 56 AC adapter (AC 120V) (W08-0598-15) (W08-0479-25):K 58 AC adapter (AC 230V) 1 (W08-0558-35):M 30 Protection bag (H25-0085-04) 715 54 Helical antenna (T90-1036-15) 713 47 Screw set (N99-0396-15) 4 Cap (SP/MIC) 2 (B09-0351-03) 712 35 SP/MIC holder 60 Battery assy (J21-4493-04) (W09-0940-25) 31 Protection bag (H25-2012-04) 36 Belt clip (J29-0734-05) 3 714 Parts with the exploded numbers larger than 700 are not su
