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Kenwood TK-7102 manual

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Table of contents for the manual

  • Page 1

    TK - 7 102 TK - 7 102 © 2001-5 PRINTED IN JAPAN B51-8584-00 ( S ) 283 VHF FM TRANSCEIVER T K-71 0 2 SER VICE MANU AL Panel assy (A62-0942-03) Front glass (B10-2668-03) Cabinet (A01-2178-02) Key top (K29-9065-01) SPECIFICA TIONS GENERAL Frequency Range ................................ 146 to 174MHz Number of Channels ........................... 4 c[...]

  • Page 2

    TK - 7 102 TK - 7 102 2 2 47 CONTENTS / GENERAL GENERAL 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 in- formation for the equipment and is current as of this publica- tion date. Cha[...]

  • Page 3

    3 T K-71 0 2 5. INSTALLATION␣ PLANNING – CONTROL␣ STATIONS 5-1. Antenna system Control station. The antenna system selection depends on many factors and is beyond the scope of this manual. Your KENWOOD␣ dealer can help you select an antenna sys- tem that will best serve your particular needs. 5-2. Radio location Select a convenient location[...]

  • Page 4

    4 T K-71 0 2 1. Controls and Functions 1-1. Front Panel q (Power) switch Press to switch the transceiver ON. Press and hold for approximately 1 seconds to switch the transceiver OFF. w ▲ key Press to increase the volume level. e ▼ key Press to decrease the volume level. r ● key PF (Programmable Function) key. The default setting of this key i[...]

  • Page 5

    5 T K-71 0 2 2. Operation Features The TK-7102 is a VHF FM radio designed to operate in conventional format. The programmable features are sum- marized. 3. Transceiver Controls and Indicators 3-1. Front Panel Controls All the keys on the front panel are momentary-type push buttons. The functions of these keys are explained below. • POWER key Tran[...]

  • Page 6

    6 T K-71 0 2 ■ Temporary delete It is possible to delete channel temporary during scan. When scan stops on unnecessary channel for example by interference of the other party, activate the delete function (for example press and hold the key for approximately one second), then that channel is deleted temporarily and scan re-start immediately. The t[...]

  • Page 7

    7 T K-71 0 2 ■ Stun If the stun code matches, a predetermined action will oc- cur. Whether option signalling is activated or not, when stun matches on any channel, the transceiver will become TX inhibited or TX/RX inhibited. While stun is active, if the stun code + "#" code is received, stun will deactivate. When stun matches, transpond[...]

  • Page 8

    8 TK -7102 REALIGNMENT 3-4. Programming Software Description The KPG-70D programming disk is supplied in 3-1/2" disk format. The software on this disk allows a user to program TK-7102 radio via a programming interface cable (KPG-46). 3-5. Programming With IBM PC If data is transferred to the transceiver from an IBM PC with the KPG-70D, the des[...]

  • Page 9

    9 TK -7102 1. When you remove the panel, turn the transceiver up side down. Detach the panel by lifting the tabs as shown below. Fig. 1 Fig. 2 DISASSEMBL Y FOR REP AIR 2. To remove the cabinet, first turn the transceiver up side down. Detach the cabinet by prying the tabs as shown below. 3. To remove the display unit PCB, detach the PCB by lifting [...]

  • Page 10

    10 T K-71 0 2 Frequency Configuration The receiver utilizes double conversion. The first IF is 49.95MHz and the second IF is 450kHz. The first local oscil- lator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the neces- sary frequencies. Figure 1 shows the frequencies. Fig. 1 Frequency configuration Receiver S[...]

  • Page 11

    11 T K-71 0 2 ■ Wide/Narrow Changeover Circuit The Wide port (pin 92) and Narrow port (pin 91) of the CPU is used to switch between ceramic filters. When the Wide port is high, the ceramic filter SW diodes (D13, D15) cause CF1 to turn on to receive a Wide signal. When the Narrow port is high, the ceramic filter SW diodes (D13, D15) cause CF2 to t[...]

  • Page 12

    12 T K-71 0 2 D10,12 Q11 TX VCO Q15 BUFF AMP D9,11 Q10 RX VCO Q7,12 T/R SW Charge pump LPF Phase comparator 1/M 1/N 5kHz/6.25kHz 5kHz/6.25kHz REF OSC 16.8MHz PLL D ATA IC1 : PLL IC Q3 RF AMP Fig. 6 PLL circuit ■ Unlock Circuit During reception, the 8RC signal goes high, the 8TC sig- nal goes low, and Q29 turns on. Q31 turns on and a voltage is ap[...]

  • Page 13

    13 T K-71 0 2 ■ APC Circuit The automatic transmission power control (APC) circuit detects part of a power module output with a diode (D34, D36) and applies a voltage to IC12. IC12 compares the APC control voltage (PC) generated by the D/A converter (IC3) and DC amplifier (IC4) with the detection output voltage to control Q27 and Q28, generates D[...]

  • Page 14

    14 T K-71 0 2 ■ Encode The QT and DQT signals are output from QT/DQT of the CPU (IC6) and summed with the external pin DI line by the summing amplifier (IC4) and the resulting signal goes to the D/A converter (IC3). The DTMF signal is output from DTMF of the CPU and goes to the D/A converter (IC3). The signal is summed with a MIC signal by the su[...]

  • Page 15

    15 T K-71 0 2 SEMICONDUCTOR DA T A ■ Terminal function Pin No. Name I/O Function 1N C I 2 DTMOSC O DTMF IC Clock Control 3 PLLE O PLL IC Chip Select 4 EVLLD O E-Volume LD 5 DTMCK O DTMF Dec IC Clock 6 DTMDT I/O DTMF Dec IC Data 7 UL O Unlock Detect 8 BSHIFT O Clock Shift 9 VDD - 10 X2 - X’TAL(7.3728MHz) 11 X1 - X’TAL(7.3728MHz) 12 VSS - GND 1[...]

  • Page 16

    16 T K-71 0 2 DESCRIPTION OF COMPONENTS Display Unit (X54-3340-20) SYMBOL PARTS NAME DISCRIPTION D1~4 LED KEY BACKLIT D5 LED MONITOR KEY LIGHT D6 LED PROGRAMMABLE KEY LIGHT D7~10 LED CHANNEL KEY LIGHT D11 LED BUSY D12 LED TRANSMIT Q1 TRANSISTOR MONITOR KEY LIGHT SW Q2,3 TRANSISTOR CHANNEL KEY LIGHT SW Q4 TRANSISTOR BUSY LIGHT SW Q5 TRANSISTOR PROGR[...]

  • Page 17

    17 T K-71 0 2 DESCRIPTION OF COMPONENTS Ref. No. Use/Function Operation/Condition Q34 TRANSISTOR DC SWITCH(SB) /Active when power on Q35 TRANSISTOR AF MUTE /Active while Mute3 is H Q37 TRANSISTOR BEAT SHIFT /Active while Beat shift is on Q38 TRANSISTOR OVER VOLTAGE DETECTION /Active while PS voltage is more than 18V Q41 TRANSISTOR MIC MUTE /Emergen[...]

  • Page 18

    18 TK-7102 P ARTS LIST 11 B ∗ A01-2178-02 CABINET 23 B ∗ A10-4047-01 CHASSIS 33 A ∗ A62-0942-03 PANEL ASSY 43 A ∗ B10-2668-03 FRONT GLASS 52 C ∗ B62-1389-00 INSTRUCTION MANUAL 63 B ∗ B72-1871-04 MODEL NAME PLATE 7 3B E04-0167-05 RF COAXIAL PECEPTACLE(M) 8 1C E30-3339-05 DC CORD ACCESSORY 92 B ∗ E30-3448-05 DC CORD(RADIO) 10 2A ∗ E37[...]

  • Page 19

    19 TK-7102 Ref. No. Parts No. Description Address New parts Ref. No. Parts No. Description Address New parts Destination Destination TX-RX UNIT (X57-6290-20) M:TK-2107 M2:TK-2107 P ARTS LIST C94 CC73GCH1H101J CHIP C 100PF J C95 CC73GCH1H050B CHIP C 5.0PF B C97 CC73GCH1H060B CHIP C 6.0PF B C99,100 CC73GCH1H050B CHIP C 5.0PF B C101 CK73GB1H471K CHIP [...]

  • Page 20

    20 TK-7102 Ref. No. Parts No. Description Address New parts Ref. No. Parts No. Description Address New parts Destination Destination TX-RX UNIT (X57-6290-20) 400~420Hz : C5 450~470Hz : C6 P ARTS LIST C274 CK73GB1H103K CHIP C 0.010UF K C275 CK73GB1C104K CHIP C 0.10UF K C277 CK73FB1A105K CHIP C 1.0UF K C279 CK73GB1H102K CHIP C 1000PF K C280 C92-0633-[...]

  • Page 21

    21 TK-7102 Ref. No. Parts No. Description Address New parts Ref. No. Parts No. Description Address New parts Destination Destination TX-RX UNIT (X57-6290-20) M:TK-2107 M2:TK-2107 P ARTS LIST L54 ∗ L41-1085-06 SMALL FIXED INDUCTOR L55 L92-0140-05 FERRITE CHIP X1 ∗ L77-1868-05 TCXO (16.8MHZ) X2 ∗ L77-1867-05 CRYSTAL RESONATOR(7.159MHZ) XF1 ∗ [...]

  • Page 22

    22 TK-7102 Ref. No. Parts No. Description Address New parts Ref. No. Parts No. Description Address New parts Destination Destination TX-RX UNIT (X57-6290-20) 400~420Hz : C5 450~470Hz : C6 P ARTS LIST R158 RK73GB1J102J CHIP R 1.0K J 1/16W R159,160 RK73GB1J101J CHIP R 100 J 1/16W R161 RK73GB1J333J CHIP R 33K J 1/16W R162 RK73GB1J102J CHIP R 1.0K J 1/[...]

  • Page 23

    23 TK-7102 Ref. No. Parts No. Description Address New parts Ref. No. Parts No. Description Address New parts Destination Destination TX-RX UNIT (X57-6290-20) M:TK-2107 M2:TK-2107 P ARTS LIST R313 RK73GB1J821J CHIP R 820 J 1/16W R316 R92-1252-05 CHIP R 0 OHM R319,320 RK73GB1J474J CHIP R 470K J 1/16W R321 R92-1252-05 CHIP R 0 OHM R322 RK73GB1J683J CH[...]

  • Page 24

    24 TK - 7102 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied. A B 1 2 3 1 16 C C C C C A A A A B B B B B B B 12 9 18 TX-RX UNIT 7 14 2 6 17 3 4 15 11 26 10 DISPLA Y UNIT SP B B A N67-3008-46 PAN HEAD SEMS SCREW B N87-2606-46 BRAZIER HEAD TAPTITE SCREW C N87-2614-46 BRAZIER HEAD TAPTITE SCREW 13 (For KEY 1 only)[...]

  • Page 25

    25 TK - 7102 P ACKING Parts with the exploded numbers larger than 700 are not supplied. D SCREW SET (N99-0395-05) Protection bag (H25-0103-04) 8 DC cord (E30-3339-05) 19 Inner P acking Case (H02-0617-02) 5 Instr uction Manual (B62-1389-00) 20 P olystyrene F oamed Fixture (H10-6636-03) 24 Item Car ton Case (H52-1699-02) Protection Bag (H25-2320-04) [...]

  • Page 26

    26 TK - 7102 Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 140 to 175MHz (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1 µ V to greater than –7dBm/100mV 2. Power Meter Input Impedance 50 Ω Operation Frequency 140 to 175MHz or more Measur[...]

  • Page 27

    27 TK - 7102 ADJUSTMENT Adjustment Location ■ Switch ■ Adjustment Point • Component Side View ■ Note • EEPROM The tuning data (Deviation, Squelch, etc.) for the EEPROM, is stored in memory. When parts are changed, readjust the transceiver. • AF PA IC (IC102) How to mounting the IC102. POWER +B GND RXD TXD CV BPF AFV TX-RX UNIT (X57-629)[...]

  • Page 28

    28 TK-7102 TK-260 : K, K2 Test frequency(MHz) Channel TX RX 1: Center 160.100 160.050 2: Lo w 146.100 146.050 3: High 173.900 173.950 4 160.000 160.000 5 160.200 160.200 6 160.400 160.400 Use KPG-70D programming software for adjustment of the next items. ADJUSTMENT Pa r ts TC2 TC1 L22 TC3 TC5 Method 5.5V 5.5V Check 3.2~3.3V(DC) Adjust the BPF wa ve[...]

  • Page 29

    29 TK-7102 TK-260 : K, K2 Method Adjust to center frequency 25W 5W Adjust the wa veform as belo w ± 4.0kHz: Wide ± 2.0kHz: Narrow According to the large +,- Check ± 0.75kHz: Wide ± 0.35kHz: Narrow ± 0.75kHz: Wide ± 0.35kHz: Narrow ± 3.0kHz: Wide ± 1.5kHz: Narrow Par ts PC ke y Specifications/ Remarks within ± 100Hz ± 1.0W ± 0.5W ± 50Hz [...]

  • Page 30

    30 TK-7102 TK-260 : K, K2 BPF-Wave Fig. 1 ADJUSTMENT[...]

  • Page 31

    AB C DE F G H I J K L M N O PQ RS 1 3 4 5 6 7 8 9 10 11 12 13 14 2 TK-7102 PC BOARD VIEW 32 31 DISPLAY UNIT (X54-3340-20) Component side view + Foil side view . o N . f e Rs s e r d d A 1 QJ 4 2 QF 5 3 QI 6 4 QH 5 5 QK 4 6 QG 5 7 QK 6 8 QI 5 9 QC 5 0 1 QC 5 1 DL 7 2 DH 7 3 DN 4 4 DE 4 5 DK 4 6 DK 4 7 DG 6 8 DI 6 9 DJ 6 0 1 DL 6 1 1 DH 4 2 1 DH 4 DI[...]

  • Page 32

    AB C DE F G H I J K L M N O PQ RS 1 3 4 5 6 7 8 9 10 11 12 13 14 2 TK-7102 PC BOARD VIEW 34 33 TX-RX UNIT (X57-6290-20) Component side view J1 CN5 R331 C230 C307 C290 B E C Q42 C350 C345 C346 C513 C218 C168 C511 C237 C232 C113 C117 C347 C526 C523 C173 R264 R308 R261 R252 R281 R280 1 GND HOOK MIC LEDMON LEDC1 LEDR MICBL LEDC4 KMI1 KMI3 KMO1 PSB PTT [...]

  • Page 33

    AB C DE F G H I J K L M N O PQ RS 1 3 4 5 6 7 8 9 10 11 12 13 14 2 TK-7102 PC BOARD VIEW TX-RX UNIT (X57-6290-20) Foil side view 35 36 J72-0788-12 ANT L45 L44 L43 L42 L40 L39 D26 D31 C244 C213 C206 C177 C367 C197 D22 C221 R208 L32 R193 R283 R282 R217 R218 C163 C336 C174 C176 D20 C199 C514 C216 R205 C358 C246 C184 C289 C247 C522 D30 D25 TC5 L36 L30 [...]

  • Page 34

    AB C DE F G H I J K L M N O PQ RS 1 3 4 5 6 7 8 9 10 11 12 13 14 2 TK-7102 PC BOARD VIEW TX-RX UNIT (X57-6290-20) Component side view + Foil side view 37 38 ANT L45 L44 L43 L42 L40 L39 D26 D31 C244 C213 C206 C177 C367 C197 D22 C221 R208 L32 R193 R283 R282 R217 R218 C163 C336 C174 C176 D20 C199 C514 C216 R205 C358 C246 C184 C289 C247 C522 D30 D25 TC[...]

  • Page 35

    Note : Component marked with a dot ( ● ) are parts of pattern1. A B C D E F G I H J K L M O N P Q S R 1 2 3 4 5 6 7 SCHEMA TIC DIAGRAM TK-7102[...]

  • Page 36

    46 LEVEL DIAGRAM RX section TX section BLOCK DIAGRAM TK-7102 TK-7102 TK-7102 TK-7102 43 45 44[...]

  • Page 37

    46 LEVEL DIAGRAM RX section TX section BLOCK DIAGRAM TK-7102 TK-7102 TK-7102 TK-7102 43 45 44[...]

  • Page 38

    TK - 7 102 TK - 7 102 2 2 47 CONTENTS / GENERAL GENERAL 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 in- formation for the equipment and is current as of this publica- tion date. Cha[...]

  • Page 39

    TK - 7 102 TK - 7 102 © 2001-5 PRINTED IN JAPAN B51-8584-00 ( S ) 283 VHF FM TRANSCEIVER T K-71 0 2 SER VICE MANU AL Panel assy (A62-0942-03) Front glass (B10-2668-03) Cabinet (A01-2178-02) Key top (K29-9065-01) SPECIFICA TIONS GENERAL Frequency Range ................................ 146 to 174MHz Number of Channels ........................... 4 c[...]