TK-7102 CONTENTS / GENERAL CONTENTS GENERAL INTRODUCTION GENERAL ..............2 SCOPE OF THIS MANUAL OPERATING FEATURES ......... 4 This manual is intended for use by experienced techni- REALIGNMENT ............7 cians familiar with similar types of commercial grade com- munications equipment. It contains all required service in- DISASSEMBLY FOR REPAIR ........
TK-7102 OPERATING FEATURES 1-4. Display 1. Controls and Functions 1-1. Front Panel q w e Indicator Description 1-2. Microphone Light while transmitting. Lights when a signal is detected on the currently selected channel. Li g hts w hi l e t he f u n ct i o n p r o - grammed onto its corresponding key is activated.
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OPERATING FEATURES • Scan ON/OFF 2. Operation Features Press this key starts scanning. Pressing this key stops The TK-7102 is a VHF FM radio designed to operate in scanning. conventional format. The programmable features are sum- • Talk around marized.
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TK-7102 OPERATING FEATURES Temporary delete Clear to transpond It is possible to delete channel temporary during scan. The transceiver waits the transpond of DTMF if channel When scan stops on unnecessary channel for example by is busy until channel open. This feature prevents the inter- interference of the other party, activate the delete function ference to other party.
For group calls, only the group tone will sound, not the transpond tone. 3-2. Connection Procedure 1. Connect the TK-7102 to the personal computer with the Pre alert tone interface cable. Sounds prior to the TOT TX inhibit activation. If TOT pre 2.
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NOTE: Clone mode should enabled. 1. Turn the master TK-7102 power ON with the [1] key held down. The TK-7102 [ ] LED is turned on. 2. Power on the slave TK-7102.
TK-7102 DISASSEMBLY FOR REPAIR 3. To remove the display unit PCB, detach the PCB by 1. When you remove the panel, turn the transceiver up lifting at the indents of the PCB as shown below. side down. Detach the panel by lifting the tabs as shown below.
TK-7102 CIRCUIT DESCRIPTION IF Amplifier Frequency Configuration The first IF signal is amplified by Q19, and the enters IC5 The receiver utilizes double conversion. The first IF is (FM processing IC). The signal is heterodyned again with a 49.95MHz and the second IF is 450kHz. The first local oscil- second local oscillator signal within IC5 to create a 450kHz lator signal is supplied from the PLL circuit.
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TK-7102 CIRCUIT DESCRIPTION Wide/Narrow Changeover Circuit Squelch Circuit The Wide port (pin 92) and Narrow port (pin 91) of the The detection output from the FM IF IC (IC5) passes CPU is used to switch between ceramic filters. When the through a noise amplifier (Q18) to detect noise.
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TK-7102 CIRCUIT DESCRIPTION IC1 : PLL IC TX VCO RF AMP 5kHz/6.25kHz BUFF D10,12 Phase Charge comparator pump DATA RX VCO Q7,12 T/R SW 5kHz/6.25kHz D9,11 16.8MHz Fig. 6 PLL circuit Unlock Circuit Transmitter System During reception, the 8RC signal goes high, the 8TC sig- Outline nal goes low, and Q29 turns on.
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Key Matrix Circuit 2) Adjusts the AF signal level of the AF filter (IC10) and turns The TK-7102 front panel has function keys. Each of them the filter select compounder on or off. is connected to a cross point of a matrix of the KMI1 to 3) Controls the DTMF decoder (IC9).
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TK-7102 CIRCUIT DESCRIPTION Encode D/A Converter The QT and DQT signals are output from QT/DQT of the The D/A converter (IC3) is used to adjust MO modulation, CPU (IC6) and summed with the external pin DI line by the AF volume, TV voltage, FC reference voltage, and PC summing amplifier (IC4) and the resulting signal goes to the POWER CONTROL voltage level.
TK-7102 SEMICONDUCTOR DATA Microprocessor : 784214AGCXXX (TX-RX Unit IC6) Terminal function Pin No. Name Function Pin No. Name Function FNC8 Function Port8 DTMOSC DTMF IC Clock Control PLLE PLL IC Chip Select MUTE1 AF Mute EVLLD E-Volume LD MUTE2 Speaker Mute...
TK-7102 DESCRIPTION OF COMPONENTS Display Unit (X54-3340-20) Ref. No. Use/Function Operation/Condition DIODE APC VOLTAGE DETECT SYMBOL PARTS NAME DISCRIPTION DIODE APC VOLTAGE DETECT D1~4 KEY BACKLIT DIODE REVERSE CONNECT PROTECTION MONITOR KEY LIGHT DIODE OVER VOLTAGE DETECTION PROGRAMMABLE KEY LIGHT...
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TK-7102 DESCRIPTION OF COMPONENTS Ref. No. Use/Function Operation/Condition TRANSISTOR DC SWITCH(SB) /Active when power on TRANSISTOR AF MUTE /Active while Mute3 is H TRANSISTOR BEAT SHIFT /Active while Beat shift is on TRANSISTOR OVER VOLTAGE DETECTION /Active while PS voltage is more than 18V...
TK-7102 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. TX-RX UNIT (X57-6290-20) TK-7102 Ref. No.
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TK-7102 PARTS LIST TX-RX UNIT (X57-6290-20) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts CC73GCH1H101J CHIP C 100PF C180 CK73GB1H103J CHIP C 0.010UF J CC73GCH1H050B CHIP C 5.0PF C182 CK73GB1C104K CHIP C 0.10UF...
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TK-7102 PARTS LIST TX-RX UNIT (X57-6290-20) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C274 CK73GB1H103K CHIP C 0.010UF K C379 CK73GB1C104K CHIP C 0.10UF C508 CK73GB1H102K CHIP C 1000PF C275 CK73GB1C104K CHIP C 0.10UF...
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TK-7102 PARTS LIST TX-RX UNIT (X57-6290-20) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts L41-1085-06 SMALL FIXED INDUCTOR RK73GB1J223J CHIP R J 1/16W L92-0140-05 FERRITE CHIP RK73GB1J473J CHIP R J 1/16W L77-1868-05 TCXO (16.8MHZ)
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TK-7102 PARTS LIST TX-RX UNIT (X57-6290-20) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R158 RK73GB1J102J CHIP R 1.0K J 1/16W R229 RK73GB1J223J CHIP R J 1/16W R159,160 RK73GB1J101J CHIP R J 1/16W...
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TK-7102 PARTS LIST TX-RX UNIT (X57-6290-20) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R313 RK73GB1J821J CHIP R J 1/16W IC20 KIA7808AF ANALOG IC IC21 NJM2100V MOS IC R316 R92-1252-05 CHIP R...
TK-7102 EXPLODED VIEW N67-3008-46 PAN HEAD SEMS SCREW N87-2606-46 BRAZIER HEAD TAPTITE SCREW N87-2614-46 BRAZIER HEAD TAPTITE SCREW (For KEY 1 only) DISPLAY UNIT TX-RX UNIT Parts with the exploded numbers larger than 700 are not supplied.
TK-7102 PACKING 25 Bracket D SCREW SET (J29-0662-03) (N99-0395-05) 8 DC cord (E30-3339-05) Protection bag (H25-0103-04) 19 Inner Packing Case (H02-0617-02) 5 Instruction Manual (B62-1389-00) 20 Polystyrene Foamed Fixture 21 Polystyrene Foamed Fixture (H10-6636-03) (H10-6639-03) Protection Bag (H25-2320-04) 24 Item Carton Case (H52-1699-02) Parts with the exploded numbers larger than 700 are not supplied.
TK-7102 ADJUSTMENT 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 V to greater than –7dBm/100mV 2. Power Meter Input Impedance Operation Frequency...
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TK-7102 ADJUSTMENT Note Adjustment Location • EEPROM Switch The tuning data (Deviation, Squelch, etc.) for the EEPROM, is stored in memory. When parts are changed, Volume readjust the transceiver. up/down Power Display PF key • AF PA IC (IC102) How to mounting the IC102.
TK-7102 ADJUSTMENT Use KPG-70D programming software for adjustment of the next items. PCB Section Measurement Adjustment Specifications/ Item Condition Test equipment Terminal Parts Method Remarks 1. Setting 1) Power supply voltage DC Power supply teriminal:13.6V 2. VCO lock 1) CH: TX high Digital voltmeter 5.5V...
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TK-7102 ADJUSTMENT Transmitter section Measurement Adjustment Specifications/ Item Condition Test equipment Terminal Parts Method Remarks 1. Frequency 1) CH: TX center Frequency PC key Adjust to center frequency within 100Hz 2) Transmit counter 2. High power 1) CH: TX low Power meter 1.0W...
TK-7102 PC BOARD VIEW DISPLAY UNIT (X54-3340-20) Component side view + Foil side view DISPLAY UNIT (X57-3340-20) Component side view MONI POWER HOOK DOWN PROG POWER LEDMON LEDPF LEDC1 LEDC2 LEDR LEDG MICBL LEDC3 LEDC4 KMI1 KMI2 KMI3 KMI4 KMO1...
TK-7102 TERMINAL FUNCTION CN1 (TX-RX Unit) J1 (TX-RX Unit) Pin No. Name Function Pin No. Name Function Audio signal output to internal/external speaker. Ground Ground PTT/TXD HOOK Hook detection/RXD Mic ground J1 (Control Unit) Mic signal input Pin No. Name...