Document Copyrights Copyright 2006 by Kenwood Corporation. All rights reserved. No part of this manual may be reproduced, translated, distributed, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, for any purpose without the prior written permission of Kenwood. Disclaimer While every precaution has been taken in the preparation of this manual, Kenwood assumes no responsibility for errors or omissions.
VHF FM TRANSCEIVER TK-760G/762G SERVICE MANUAL REVISED © 2000-1 PRINTED IN JAPAN B51-8497-10 (N) 1269 TK-760G (K) Microphone (T91-0597-15) Cabinet (Upper) (A01-2165-13) Panel assy (A62-0642-03) Key top (K29-5343-02) TK-762G (K) Microphone (T91-0597-15) Cabinet (Upper) (A01-2165-13) Panel assy (A62-0731-03) Key top (K29-5344-02) Please use this manual in place of the service manual (preliminary version), B51-8497-00.
TK-760G/762G CONTENTS / GENERAL CONTENTS GENERAL GENERAL ................................................................. 2 INTRODUCTION SYSTEM SET-UP ..................................................... 4 SCOPE OF THIS MANUAL OPERATING FEATURES ......................................... 5 REALIGNMENT ...................................................... 10 INSTALLATION ...................................................... 20 CIRCUIT DESCRIPTION .........................................
TK-760G/762G GENERAL 3. PRE-INSTALLATION CHECKOUT 3-1. Introduction 5. INSTALLATION PLANNING – CONTROL STATIONS 5-1. Antenna system Each radio is adjusted and tested before shipment. However, it is recommended that receiver and transmitter operation be checked for proper operation before installation. Control station. The antenna system selection depends on many factors and is beyond the scope of this manual.
TK-760G/762G SYSTEM SET-UP Merchandise received 128ch models TK-760G Frequency range (MHz) RF power Type 148~174 25W K 136~162 25W K2 146~174 25W M 8ch models TK-762G Frequency range (MHz) RF power Type 148~174 25W K 136~162 25W K2 License and frequency allocated by FCC Choose the type of transceiver Transceiver programming (Option) Are you using the public address? See page 11.
TK-760G/762G OPERATING FEATURES 1-4. Display ■ TK-760G 1. Controls and Functions 1-1. TK-760G Front Panel 1 2 3 4 5 Indicator 6 7 1-2. TK-762G Front Panel 1 2 3 6 4 Appears when the selected channel in busy. Appears when QT, DQT, DTMF, or 2-Tone decoding is deactivated (by pressing the Monitor key). Appears when you receive a Code Squelch, Selective Call, 2-Tone code. Also appears when you transmit using Code Squelch or Selective Call. Appears while scanning. 5 7 1-3.
TK-760G/762G OPERATING FEATURES 1-5. Rear panel 2. Operation Features The TK-760G/762G is a VHF FM radio designed to operate in conventional format. The programmable features are summarized. Power input connector 3. Transceiver Controls and Indicators 3-1. Front Panel Controls External speaker jack Antenna connector All the keys on the front panel are momentary-type push buttons. The functions of these keys are explained below. • POWER key 1-6.
TK-760G/762G OPERATING FEATURES • Display character (TK-760G only) • Public address This key switches the LCD display between the group and channel number and the group and channel name. Pressing this key for longer than 1 second causes the transceiver to enter the emergency mode. The transceiver jumps to the programmed "Emergency the group and channel" and transmits for 25 seconds. The transceiver disables mic mute while transmitting.
TK-760G/762G OPERATING FEATURES ■ SCAN start condition One or more non-priority channels must be added to all channels that can be scanned. The transceiver must be in normal receive mode (PTT off). When you activate the key programmed to the scan function, the scan starts. The scan icon "SCN" lights and "SCAN" is indicated on alphanumeric display. ■ Scan stop condition The scan stops temporarily if the following conditions are satisfied.
TK-760G/762G OPERATING FEATURES ■ Off hook decode ■ AND/OR If the Off hook decode function has been enabled, removing and replacing the microphone on the hook has no effect for decoding QT/DQT and option signalling. You can select AND or OR for option signalling match conditions. ■ "TOT" pre-alert The transceiver has "TOT pre-alert timer. This parameter selects the time at which the transceiver generates "TOT" pre-alert tone before "TOT" is expired.
TK-760G/762G OPERATING FEATURES / REALIGNMENT ■ Busy tone Sounds in conventional mode, when busy channel lockout is functioning. You can select yes or no for the optional feature's warning tone. ■ Group call tone Sounds when a group call with the correct DTMF/2-tone option signalling is received, repeats 7 times. You can select yes or no for the optional feature's warning tone. ■ Individual call tone Sounds when an individual call with the correct DTMF/2tone option signalling is received.
TK-760G/762G REALIGNMENT 5-4. Programming Software Description 4. Check Sum Executing this function, "TUNING" apears on the display of the TK-760G while calculation the check sum. When the calculation is completed, the display returns to normal and PC displays the check sum of the radio. The KPG-56D programming disk is supplied in 3-1/2" disk format. The software on this disk allows a user to program TK-760G/762G radio via a programming interface cable (KPG-46). 5-5. Programming With IBM PC 5.
TK-760G/762G REALIGNMENT Notes : Note : • To start the Firmware Programmer from KPG-56D, the FPRO path must be set up by the KPG-56D setup. • This mode cannot be entered if the Firmware programming mode is set to Disable in the Programming software (KPG-56D). • When programming the firmware, it is recommend to copy the data from the floppy disk to your hard disk before you update the radio firmware. Directly copying from the floppy disk to the radio may not work because the access speed is too slow.
TK-760G/762G REALIGNMENT Note : This mode (self programming mode) cannot be set when it has been disabled with the FPU. D507 TX-RX unit B/2 Foil side IC502 9. Channel Setting Mode Each channel can be setup in its action mode by using the panel keys. • Pressing [MON] when "SELF" is diaplyed, sets channel setting mode. • Select an item set using [ ] then change the selection with the [CH / ]. • The data displayed using [D/A] is stored in the memory and then proceeds to the next item.
TK-760G/762G REALIGNMENT No. Function 3 TX Choices Step Display Remarks STP__250 Display when an item frequency 2.5kHz~1MHz STP_1000 is selected or when a step is changed (about 0.5 seconds) [A] : Step change 2.5, 5.0, 6.25, 7.5kHz, 1MHz step Blank -------- 100.0000~ T.100.0000 blank switching 550.0000MHz [ ] : Frequency on/ The rightmost dot No.
TK-760G/762G REALIGNMENT 9-1. Flow Chart 10. Function Setting Mode Self programming mode [MON] [MON] [MON] Channel setting mode [D/A] RX frequency [D/A]/[ ] [MON] [MON] RX signalling [D/A]/[ ] TX freuency [D/A]/[ ] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] [MON] TX signalling [D/A]/[ ] Channel selection [ ] [ ] [ ] [ ] [ ] Group selection OFF [ ] OFF [ ] QT [ ] DQT N [SCN] DQT I OFF [ ] OFF [ ] QT [ ] DQT N [SCN] DQT I No.
TK-760G/762G REALIGNMENT No. Function Choices Horn alert Display Remarks No.
TK-760G/762G REALIGNMENT No. Function Choices Display Remarks No.
TK-760G/762G REALIGNMENT No.
TK-760G/762G REALIGNMENT No. Function Choices Display Remarks 10-1.
TK-760G/762G INSTALLATION 1-2. KCT-19 Accessory Port Function 1. Accessory Connection Cable (KCT-19 : Option) No. No. Name Function Note (A) (B,C,D,E) The KCT-19 is an accessory connection cable for connecting external equipment. The connector has 15 pins and the necessary signal lines are selected for use. 1 D-2 RXD Serial control data input *1 DTC Data channel control/ *2 External hook input 1-1. Installing the KCT-19 in the transceiver 2 D-5 ME External microphone ground 1.
TK-760G/762G INSTALLATION 2. Accessory Terminal (TX-RX Unit) 3. Ignition Sense Cable (KCT-18 : Option) 2-1. External Connector Accessory Terminal Method The KCT-18 is an optional cable for enabling the ignition function. The ignition function lets you turn the power to the transceiver on and off with the car ignition key. If you use the Horn Alert function or the Manual Relay function, you can turn the function off while driving with the ignition key. No.
TK-760G/762G INSTALLATION 3-2. Modifying the Transceiver Modify the transceiver as follows to turn the power or the Horn Alert or Manual Relay function on and off with the ignition key. 1. Remove the lower half of the transceiver case. 2. Set jumper resistors (0Ω) R134 and R135 of the TX-RX unit (A/2) as shown in Table 1. 3 3 W1 2 W2 CN1 CN2 CN3 TX-RX UNIT (A/2) Cushion (G13-1710-04) 4 1 1 CN3 CN7 ANT KCT-19 CN2 R135 R133 R134 KCT-19 Fig. 4 Fig.
TK-760G/762G INSTALLATION 2. Fold the flat cable ( 1 ) in the opposite direction ( 2 ). 3. Rotate the control section ( 3 ) 180 degrees ( 4 ). 4. Insert the flat cable into the control section connector, CN501 ( 5 ). 5. Mount the control section on the transceiver ( 6 ). 6. External Speaker 6-1. KES-3 : Option The KES-3 is an external speaker for the 3.5-mm-diameter speaker jack. • Connection procedure 1. Connect the KES-3 to the 3.5-mm-diameter speaker jack on the rear of the transceiver.
TK-760G/762G CIRCUIT DESCRIPTION ■ IF Amplifier Frequency Configuration The receiver utilizes double conversion. The first IF is 49.95MHz and the second IF is 450kHz. The first local oscillator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the necessary frequencies. Figure 1 shows the frequencies. ANT CF 450kHz The first IF signal is amplified by Q13, and the enters IC5 (FM processing IC).
TK-760G/762G CIRCUIT DESCRIPTION ■ Wide/Narrow Changeover Circuit ■ Squelch Circuit The W/N port (pin 4) of the shift register (IC510) is used to switch between ceramic filters. When the W/N port is high, Q4 turns on and the ceramic filter SW diode (D8, D10) CF1 turns on to receive a Narrow signal. At the same time, Q35 turns on and one of the filters is selected so that the wide and narrow audio output levels are equal.
TK-760G/762G CIRCUIT DESCRIPTION PLL/VCO IC3 : PLL IC 1/N Q103 TX VCO 5kHz/6.25kHz LPF Phase comparator PLL DATA D102,104 Charge pump Q101 RX VCO REF OSC 1/M 5kHz/6.25kHz Q9 RF AMP Q106 BUFF AMP Q102, 104,105 T/R SW D101,103 16.8MHz Fig. 6 PLL circuit ■ Unlock Circuit During reception, the 8RC signal goes high, the 8TC signal goes low, and Q16 turns on. Q18 turns on and a voltage is applied to the collector (8R).
TK-760G/762G CIRCUIT DESCRIPTION ■ APC Circuit ■ Memory Circuit The automatic transmission power control (APC) circuit detects part of a power module output with a diode (D35, D36) and applies a voltage to IC15. IC15 compares the APC control voltage (PC) generated by the D/A converter (IC6) and DC amplifier (IC7) with the detection output voltage to control Q31 and Q32, generates DB voltage from B voltage, and stabilizes transmission output.
TK-760G/762G CIRCUIT DESCRIPTION ■ Encode ■ D/A Converter The QT and DQT signals are output from TO of the CPU (IC502) and summed with the external pin DI line by the summing amplifier (IC2) and the resulting signal goes to the D/A converter (IC6) of the TX-RX unit. The DTMF and 2TONE signals are output from DTMF of the CPU and goes to the audio processor (IC508).
TK-760G/762G SEMICONDUCTOR DATA Microprocessor : 30622M4102GP (TX-RX Unit IC502) ■ Terminal function Pin No. Name I/O Function Pin No. Name I/O Function 1 EMGT O External MIC control. Mobile MIC : H 37 RDY I Pull up. 2 DTMF O DTMF/2TONE/BEEP output. 38 NC – NC. 3 2TN I 2TONE decode pulse input. 39 HOLD I Not used. 4 DTMSTD I DTMF decode detect. 40,41 NC – NC. 5 SIM I Destination select. 42 RD O READ signal. 6 BYTE I +5V (5C). 43 NC – NC.
TK-760G/762G SEMICONDUCTOR DATA Shift Register : BU4094BCFV LCD Driver : LC75833W (Display Unit IC801 : TK-762G only) ■ Terminal function (TX-RX unit IC510) Pin No. Port Function 4 Q1 W/N Wide/Narrow SW. 5 Q2 MUTE MIC mute (M models only). Mute : H 6 Q3 MBL MIC/LCD backlight control. S2/P2 S1/P1 S9 S8/P8 S35 S34 COM1 COM2 ■ Block diagram Narrow : H COM3 Name Backlight on : H 7 Q4 LED0 Red LED. LED lights : H 11 Q8 BSHIFT Beat shift.
TK-760G/762G DESCRIPTION OF COMPONENTS Display Unit (X54-3270-10) : TK-760G Ref. No. D801 Use/Function Operation/Condition Ref. No.
TK-760G/762G DESCRIPTION OF COMPONENTS Ref. No. IC9 Use/Function Shift/Store register Operation/Condition HNC, 8RC, 8TC, SPMUTE, RX, Ref. No.
TK-760G/762G PARTS LIST CAPACITORS CC 1 45 TH 2 1H 220 3 4 1 = Type … ceramic, electrolytic, etc. 2 = Shape … round, square, ect. 3 = Temp. coefficient 5 J 4 = Voltage rating 5 = Value 6 = Tolerance • Temperature coefficient 1st Word C L P R S Color* Black Red Orange Yellow Green ppm/°C 0 –80 –150 –220 –330 • Tolerance (More than 10pF) Code C D G J (%) ±0.25 ± 0.
TK-760G/762G PARTS LIST New Parts. indicates safety critical components. * Parts without Parts No. are not supplied. L : Scandinavia Y : PX (Far East, Hawaii) Y : AAFES (Europe) Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. K : USA T : England X: Australia P : Canada E : Europe M: Other Areas TK-760G/762G DISPLAY UNIT (X54-3270-10) : TK-760G, DISPLAY UNIT (X54-3280-10) : TK-762G Ref. No. New Address parts Parts No.
TK-760G/762G PARTS LIST TX-RX UNIT (X57-5950-XX) Destination Ref. No. TX-RX UNIT (X57-5950-XX) -10 : TK-760G K -11 : TK-762G K -12 : TK-760G K2 -13 : TK-762G K2 -21 : TK-760G M C98 C99 C100 C101 C102,103 CK73GB1H103K C92-0004-05 CK73GB1H102K CC73GCH1H040C CK73GB1H102K CHIP C CHIP-TAN CHIP C CHIP C CHIP C 0.010UF 1.0UF 1000PF 4.0PF 1000PF K 16WV K C K C104 C105 C106 C107 C110 C92-0002-05 CK73GB1H102K CC73GCH1H180J CK73GB1H102K CC73GCH1H180J CHIP-TAN CHIP C CHIP C CHIP C CHIP C 0.
TK-760G/762G PARTS LIST TX-RX UNIT (X57-5950-XX) Ref. No. Address New parts Parts No. Description Destination Ref. No. New Address parts Parts No. Description C503 C504 C505 C506,507 C508 CK73GB1H471K CK73GB1H103K CK73GB1C104K CK73GB1H103K CK73GB1H472K CHIP C CHIP C CHIP C CHIP C CHIP C 470PF 0.010UF 0.10UF 0.010UF 4700PF K K K K K K K K J K C509 C514 C515 C516 C517 C92-0507-05 CC73GCH1H680J CK73GB1H103K CC73GCH1H270J CK73GB1C683K CHIP-TAN CHIP C CHIP C CHIP C CHIP C 4.7UF 68PF 0.
TK-760G/762G PARTS LIST TX-RX UNIT (X57-5950-XX) Ref. No. New Address parts Parts No. Description Destination Ref. No. New Address parts Parts No. Destination Description C582 C583 C584 C585 C587 CK73GB1C473K C92-0566-05 CK73GB1H103K CC73GCH1H101J CK73GB1H103K CHIP C CHIP-TAN CHIP C CHIP C CHIP C 0.047UF 10UF 0.010UF 100PF 0.010UF K 6.
TK-760G/762G PARTS LIST TX-RX UNIT (X57-5950-XX) Ref. No. Address New parts Parts No. Destination Description Ref. No. New Address parts Parts No. Destination Description R36 R37 R38-40 R41 R42 RK73GB1J223J RK73GB1J220J RK73GB1J103J RK73GB1J224J RK73GB1J473J CHIP R CHIP R CHIP R CHIP R CHIP R 22K 22 10K 220K 47K J J J J J 1/16W 1/16W 1/16W 1/16W 1/16W R107 R108 R109 R110 R111 RK73GB1J473J RK73GB1J271J RK73GB1J102J RK73GB1J220J RK73GB1J180J CHIP R CHIP R CHIP R CHIP R CHIP R 47K 270 1.
TK-760G/762G PARTS LIST TX-RX UNIT (X57-5950-XX) Ref. No. New Address parts Parts No. Destination Description Ref. No. New Address parts Parts No. Destination Description R175 R176 R177 R178 R179-181 RK73GB1J682J RK73GB1J104J R92-1261-05 RK73GB1J103J RK73GB1J223J CHIP R CHIP R CHIP R CHIP R CHIP R 6.
TK-760G/762G PARTS LIST TX-RX UNIT (X57-5950-XX) PLL/VCO (X58-4670-XX) Ref. No. Address New parts Parts No. Destination Description Ref. No. New Address parts Parts No. Destination Description IC503 IC505 IC507 IC508 IC509 RH5VL42C AT2408N10SI2.
TK-760G/762G PARTS LIST PLL/VCO (X58-4670-XX) Ref. No. New Address parts Parts No. Destination Description C107 C110 C110 C111 C111 CC73GCH1H080D CC73GCH1H040B CC73GCH1H120J CC73GCH1H040B CC73GCH1H050B CHIP C CHIP C CHIP C CHIP C CHIP C 8.0PF 4.0PF 12PF 4.0PF 5.0PF D B J B B K,M K,M K2 K2 K,M C112,113 C114 C114,115 C115 C116 CC73GCH1H020B CC73GCH1H070D CC73GCH1H060D CC73GCH1H050B CC73GCH1H120J CHIP C CHIP C CHIP C CHIP C CHIP C 2.0PF 7.0PF 6.0PF 5.
42 2 1 A B C D 24 3 M2.6 x 6 (OC) BLK M3 x 8 M2.6 x 6 (Br-Tap) M2.6 x 12 (Br-Tap) 40 703 2 7 C TX-RX unit (X57-595) (B/2) 24 37 Ax2 : N33-2606-45 : N67-3008-46 : N87-2606-46 : N87-2612-46 A A 11 6 1 703 17 Display unit (X54-327) C 23x2 22 A B Dx11 26 44 Cx2 27 B 22 701 9 IC400 702 25 Cx2 24 704 TX-RX unit (X57-595) (A/2) B 21x2 16 C 12 14 TK-760G/762G EXPLODED VIEW (TK-760G) Parts with the exploded numbers larger than 700 are not supplied.
Parts with the exploded numbers larger than 700 are not supplied. 2 1 A B C D 24 3 M2.6 x 6 (OC) BLK M3 x 8 M2.6 x 6 (Br-Tap) M2.
TK-760G/762G PACKING G 13 DC cord (E30-3339-05) 1 H 45 Microphone (T91-0597-15) : K,K2 33 Protection bag (H25-0720-04) 19 Fuse (10A) (F51-0016-05) x 2 5 Cap (B09-0235-05) 38 Bracket (J29-0627-23) 32 Inner packing case (H12-1391-03) 36 Holder (J19-1584-05) 42 Screw set (N99-0395-05) 705 Warranty card 2 31 Polystyrene foamed fixture (R) (H10-6619-12) 33 Protection bag (H25-0720-04) 8 Instruction manual (B62-1257-10) : M (B62-1258-00) : K,K2 30 Polystyrene foamed fixture (F) (H10-6618-12) 3 34 It
TK-760G/762G ADJUSTMENT • Signalling Test Mode (TK-760G Only) ■ Test Mode Operating Features This transceiver has a test mode. To enter test mode, press [SCN] key and turn power on. Hold [SCN] key until test channel No. and test signalling No. appears on LCD. Test mode can be inhibited by programming. To exit test mode, switch the power on again. The following functions are available in test mode. • Controls [PTT] [MON] [SCN] [A] [D/A] [ ] [ ] [CH / ] [Volume / Used when making a transmission.
TK-760G/762G ADJUSTMENT ■ Tuning Mode Display Function name FREQ_ _XX Frequency adj. HPOW_XXX RF high power [ ] LPOW_XXX RF low power [ ] [A] [A] NARROW _MAX_ XXX. Max deviation (Narrow) [ ] FDQT_XXX. DQT fine deviation (Narrow) [ ] DTMF_XXX. DTMF fine deviation (Narrow) [ ] TONE_XXX. Single tone fine deviation (Narrow) [ ] H.P.OW_XXX Hi power (L') [D/A] [ ] H.P.O.W_XXX Hi power (C) [D/A] [ ] H.P.O.W._XXX Hi power (H') [D/A] [ ] H.P.O.W._.XXX Hi power (H) [D/A] [ ] L.
TK-760G/762G ADJUSTMENT Test Equipment Required for Alignment Test Equipment 1. Standard Signal Generator (SSG) 2. Power Meter 3. Deviation Meter 4. Digital Volt Meter (DVM) 5. Oscilloscope 6. High Sensitivity Frequency Counter 7. Ammeter 8. AF Volt Meter (AF VTVM) 9. Audio Generator (AG) 10. Distortion Meter Major Specifications 136 to 174MHz Frequency modulation and external modulation –127dBm/0.
TK-760G/762G ADJUSTMENT ■ Adjustment Point Adjustment Location ■ Switch (TK-760G) LED Power Volume up/down Display Channel up/down TX-RX UNIT (A/2) MIC jack Programmable function keys L18 ■ Note • Flash memory The firmware program (User mode, Test mode, Tuning mode, etc.) and the data programmed by the FPU (KPG-56D) for the flash memory, is stored in memory. When parts are changed, program the data again.
TK-760G/762G ADJUSTMENT Common Section Since the TK-762G cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment. Measurement Item Condition 1. PLL lock voltage 1) Set test mode CH : CH3 - Sig1 RX TX 2) PTT : ON (Transmit) RX 3) CH : CH2 - Sig1 AUX : ON (talk-around mode) TX 4) PTT : ON (Transmit) Testequipment Unit DVM TX-RX Power meter (A/2) F. conter Terminal CV Adjustment Unit PLL Parts Method TC106 7.5V K,M 7.0V K2 Specifications/Remarks ± 0.1V TC109 7.
TK-760G/762G ADJUSTMENT Measurement Item 3. Squelch 3 • Wide • Narrow 4. Squelch 9 • Wide • Narrow 5. Squelch check 50 Condition 1) Set test mode Select “SQL3” in tuning mode. “S.QL3” Adjust [***] SSG freq' : 148.050MHz K : 136.050MHz K2 : 146.050MHz M SSG output : –127dBm/0.1µV SSG MOD : 3kHz (Wide) 1.5kHz (Narrow) 2) “S.Q.L.3” Adjust [***] SSG freq' : 161.050MHz K : 149.050MHz K2 : 160.050MHz M 3) “S.Q.L..3._.” Adjust [***] SSG freq' : 173.950MHz K,M : 161.950MHz K2 4) “SQL3***.
TK-760G/762G ADJUSTMENT Measurement Item 6. QT check Condition 1) Set test mode CH : CH1 - Sig4 SSG MOD INT : 3kHz (Wide), 1.5kHz (Narrow) EXT : 151.4Hz SSG system MOD DEV : ±3.75kHz (Wide), ±1.85kHz (Narrow) SSG output : 10dB SINAD level Testequipment SSG Unit Rear panel AF VTVM Distortion meter Oscilloscope AG Terminal Adjustment Unit Parts Method Specifications/Remarks ANT ACC (EXT.SP) 2) CH : CH1 - Sig3 CH1 - Sig5 CH1 - Sig6 Check Squelch must be opened.
TK-760G/762G ADJUSTMENT Measurement Item Condition 3) “L.P.O.W” PTT : ON Adjust [***] 4) “L.P.O.W.” PTT : ON Adjust [***] 5) “L.P.O.W._.” PTT : ON Adjust [***] Testequipment Unit Terminal Power meter Rear panel ANT 5. Power check 1) Set test mode CH : CH1 - Sig1 CH2 - Sig1 CH3 - Sig1 PTT : ON Power meter Rear panel Ammeter ANT 6. Modulation balanced • Wide Power meter Rear Deviation panel meter Oscilloscope ANT AF VTVM AG MIC 1) Set test mode MIC input : OFF Select “BAL” in tuning mode. “_.
TK-760G/762G ADJUSTMENT Measurement Item 8. MIC seisitivity check Condition 1) Set test mode CH : CH1 - Sig1 AG : 1kHz/5mV PTT : ON Adjust [***] Testequipment Power meter Rear Deviation panel meter Oscilloscope AF VTVM 9. QT deviation 1) Set test mode AG • Wide Select “FQT” in tuning mode. “_.FQT” Deviation meter filter LPF : 3kHz, HPF : OFF PTT : ON Adjust [***] 2) “_.F.Q.T” PTT : ON Adjust [***] 3) “_.F.Q.T._.” PTT : ON Adjust [***] • Narrow 4) “_FQT***.” PTT : ON Adjust [***] 10.
A C B TK-760G/762G TK-760G/762G 1 E D PC BOARD VIEWS DISPLAY UNIT (X54-3270-10) : TK-760G Component side view DISPLAY UNIT (X54-3270-10) : TK-760G Foil side view 2 CN801 MBL E E 5C 5C E SB CE CE SB DI CL CL DI 1 1 E CN801 MBL Q801 E D803 2 C806 C807 R808 D803 R809 C C807 R808 B D808 C806 D804 D804 D808 B C E Q801 3 R809 2 4 8 7 8 L801 R806 R806 L801 D805 D805 C801 C801 R801 C802 C802 C805 C803 C803 C805 R805 C804 R804 R804 C804 R805 D801 D8
D C B A F E I H G TK-760G/762G PC BOARD VIEWS DISPLAY UNIT (X54-3280-10) : TK-762G Component side view J 1 DISPLAY UNIT (X54-3280-10) : TK-762G Foil side view PLL/VCO (X58-4670-XX) -10 : K,M -11 : K2 Component side view J72-0676-02 L101 D101 R101 C107 R117 D105 2 HT 8CL R103 MD C102 CV C105 3 1 R102 L116 L104 L102 D102 D104 C110 DI RX (ST) 6 E TC109 CL C125 L105 CL R105 DI R106 SB R116 CE R104 CE L107 SB L108 E 2 CN101 C127 C126 C114 5C R115 C11
A 1 C B D TK-760G/762G 2 E F G I H K L N M O P Q S R TX-RX UNIT (X57-5950-XX) (A/2) Component side view PC BOARD VIEW -10 : TK-760G K -11 : TK-762G K -12 : TK-760G K2 -13 : TK-762G K2 -21 : TK-760G M Component side Ref. No. Address Ref. No. Address Ref. No. Address Ref. No.
A B E D C F G H J I K L M TX-RX UNIT (X57-5950-XX) (A/2) Foil side view Ref. No. Q3 Q4 Q5 Q6 Q7 Q10 Q13 Q14 Q15 Address 12H 12H 11B 11B 11K 13G 13K 10N 13O Ref. No. Address Ref. No. Address Q16 13M Q25 6J Q17 9B Q26 8C Q18 13N Q27 9Q Q19 7C Q28 7I Q20 8C Q29 7G Q21 7C Q31 6H Q22 7L Q33 7N Q23 7E Q36 9K Q24 8B D1 13D Ref. No. D2 D3 D4 D5 D8 D10 D11 D14 D15 Address 12B 13C 13C 13D 12J 12I 12G 10H 10B Ref. No. D16 D17 D18 D19 D20 D21 D22 D23 D24 Address 11N 7L 12Q 8B 8D 7C 7J 10Q 8D Ref.
A 1 C B D TK-760G/762G E F G I H J K L N M TX-RX UNIT (X57-5950-XX) (A/2) Component side view + Foil side PC BOARD VIEW Ref. No. Address Ref. No. IC1 11O IC12 IC2 9J IC13 IC3 10H IC14 IC4 12M IC15 IC5 12I IC400 IC6 10M Q1 IC7 9L Q2 IC8 9F Q3 IC9 9M Q4 IC10 8O Q5 IC11 10J Q6 -10 : TK-760G K -11 : TK-762G K -12 : TK-760G K2 -13 : TK-762G K2 -21 : TK-760G M Component side Pattern 1 Pattern 2 Pattern 3 Pattern 4 2 IC400 Foil side 3 1 2 3 O 4 Connect 1 and 4 P Q Address Ref. No.
B E D C F G H J I K L M -11 : TK-762G K -12 : TK-760G K2 -13 : TK-762G K2 -21 : TK-760G M Q S R TK-760G/762G 1 D512 J72-0677-02 B/2 E E SB CNT DT C503 R510 I G O IC503 C609 1 3 R520 R521 CH DN R512 C505 4 32 D506 17 C630 + C613 R602 9 R505 R544 R542 CH UP R517 C603 R531 C631 R532 8 C517 C524 R534 C520 C523 IC510 2 L501 C501 16 1 R622 CNT CK C605 R552 LCD CS C599 C529 C531 C532 R545 R551 R555 R547 5C R535 R537 5 4 IC514 1 8 C528 MBL
A 1 C B D E TK-760G/762G F G I H J K L N M O P Q S R PC BOARD VIEW TX-RX UNIT (X57-5950-XX) (B/2) Component side view + Foil side -10 : TK-760G K -11 : TK-762G K -12 : TK-760G K2 -13 : TK-762G K2 -21 : TK-760G M J72-0677-02 B/2 CP521 CP523 R527 CP534 C516 C518 R507 + C720 CP532 L503 C502 D510 X502 SCN (TK-760G) Q501 C514 R528 R504 R515 100 CP524 C515 32 CP536 CP535 1 R506 CP516 CP514 R611 CP513 CP505 CP512 CP504 CP503 CP511 R503 CP502 CP510 CP509 1 CP508
A B C Note : Components marked with a dot (·) are parts of patterun 1.
A TK-762G 1 2 3 4 5 6 7 71 B C SCHEMATIC DIAGRAM D E F G H I J K L M N O P Q R S T Note : Components marked with a dot (·) are parts of patterun 1.
TK-760G/762G TK-760G/762G TK-760G/762G BLOCK DIAGRAM 77
TK-760G/762G TK-760G/762G LEVEL DIAGRAM Receiver Section Center Frequency 49.95MHz 450kHz Audio Frequency To make measurements in the RF section, connect the RF level meter. In the RF section, use a 0.01µF coupling capacitor. (The display shows the SSG input value required to obtain 12dB SINAD.) To make measurements in the AF section, connect the AC level meter. (ANT input : –53dBm, 1kHz FM, 3kHz DEV (Wide) / 1.5kHz DEV (Narrow)) The AF output level is adjusted for 0.
TK-760G/762G TERMINAL FUNCTION CN1 (TX-RX Unit) Pin No. 1 2 3 4 5 6 Name 8C 5S AUX5 AUX6 NC AUX3 7 AUX1 8 9 AUX4 AUX2 10 11 12 13 14 15 ALT AFO AFI MII MIO GND CN3 (TX-RX Unit) Function DC 8V output. DC 5V output. SMRD : Reset output. *1 5SC : 5S control (Cannot use). *1 Non-connection SMCK : Clock pulse output. *1 SQ : Squelch detect output. *2 SMRQ : Ack Req input. *1 PTT : External PTT input. *2 TXD : Serial control data output. *1 RXD : Serial control data input.
TK-760G/762G SPECIFICATIONS GENERAL Frequency Range ................................ K : 148 to 174MHz K2 : 136 to 162MHz Number of Channels ........................... TK-762G : Maximum 8 channels M : 146 to 174MHz TK-760G : Maximum 128 channels Number of Groups .............................. TK-760G : Maximum 128 groups Channel Spacing ................................. Wide : 25, 30kHz Narrow : 12.5, 15kHz PLL Channel Stepping ........................ 2.5, 3.75, 5, 6.25, 7.5kHz Operating Voltage ..
TK-760G/762G KENWOOD CORPORATION 14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan KENWOOD SERVICE CORPORATION P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A. KENWOOD ELECTRONICS CANADA INC. 6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8 KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str. 15, 63150 Heusenstamm, Germany KENWOOD ELECTRONICS BELGIUM N.V. Mechelsesteenweg 418 B-1930 Zaventem, Belgium KENWOOD ELECTRONICS FRANCE S.A.