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VHF FM TRANSCEIVER TK-760/762/H SERVICE MANUAL KENWOOD © 1996-5 PRINTED IN JAPAN B51-8327-00 (N) 1382 TK-760JH Cabinet (Upper) (AOl-2112-03) ( "-~-~ Panel assy (A62-0449-13) Front glass (810-1230-04) Key top (Rubber) (K29-5081-02) TK-762/H Front glass (810-1252-04) - .. .".. ;m:- Panel assy (A62-0450-13) Key top (Rubber) (K29-5081-02) TK-760/762/H CONTENTS GENERAL SYSTEM SET-UP OPERATING FEATURES 1. Transceiver Programming INSTALLATION 1. Accessory Connection Cable (KCT-19 : Option) 2. Ignition Sense Cable (KCT-18 : Option) 3. PA/HA Unit (KAP-1 : Option) 4. DTMF Decode 5. External Speaker 6. Fitting the Control Panel Upside Down REALIGNMENT 1. Modes 2. How To Enter Each Mode 3. Panel Test Mode (TK-760 Only) 4. Panel Tuning Mode (TK-760 Only) BLOCK DIAGRAM LEVEL DIAGRAM CIRCUIT DESCRIPTION 1. Circuit Configuration by Frequency 2. Receiving System 3. Transmitter System 4. Frequency Synthesizer Unit 5. Display Section 6. Control Section SEMICONDUCTOR DATA DESCRIPTION OF COMPONENTS PARTS LIST EXPLODED VIEW PACKING ADJUSTMENT TERMINAL FUNCTION PC BOARD VIEWS I CIRCUIT DIAGRAMS VCO (X58-4360-XX) TX-RX UNIT: TX-RX (X57-4950-XX) (A/2): TK-760 I (X57-5100-XX) (A/2) : TK-762 TX-RX UNIT: CONTROL (X57-4950-XX) (B/2) : TK-760 I (X57-5100-XX) (B/2) : TK-762 KAP-1 (PA/HA UNIT) SPECIFICATIONS 50 51 61 71 BACK COVER 20 20 22 23 24 24 27 31 34 41 42 43 49 : 13 13 13 15 17 19 : 7 9 10 11 12 12 6 : 3 5 2 TK-760/762 GENERAL INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains all required service information for the equipment and is current as of the publication data. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions. These are issued as required. PERSONNEL SAFETY The following precautions are recommended for personnel safety: · DO NOT transmit if someone is within two feet (0.6 meter) of the antenna. · DO NOT transmit until all RF connectors are verified secure and any open connectors are properly terminated. · SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere. · All equipment should be properly grounded before power-up for safe operation. · This equipment should be serviced by a qualified technician only. ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment information, the full part identification number should be included. This applies to all parts: components, kits, or chassis. If the part number is not known, include the chassis or kit number of which it is a part, and a sufficient description of the required component for proper identification. FCC COMPLIANCE AND TYPE NUMBERS Model and destination TK-760 TK-760 TK-762 TK-762 TK-760H TK-760H TK-762H TK-762H K K2 K K2 K K2 K K2 Frequency range (MHzl 148-174 136-156 148-174 136-156 148-174 136-156 148-174 136-156 TX power IW) 25 25 25 25 45 45 4