Kenwood TK 762 Service Manual
This is the 27 pages manual for Kenwood TK 762 Service Manual.
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Extracted text from Kenwood TK 762 Service Manual (Ocr-read)
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TK-760/762/H CONTENTS GENERAL3 SYSTEM SET-UP : 5 OPERATING FEATURES 1. Transceiver Programming 6 INSTALLATION 1. Accessory Connection Cable(KCT-19 : Option) 7 2. Ignition SenseCable(KCT-18 : Option) 9 3. PA/HA Unit (KAP-1: Option) 10 4. DTMF Decode : 11 5. External Speaker 12 6. Fitting the Control Panel Upside Down 12 REALIGNMENT 1. Modes 13 2. How To Enter Each Mode 13 3.Panel Test Mode (TK-760 Only) 13 4. Panel Tuning Mode (TK-760Only) 15 BLOCK DIAGRAM 17 LEVEL DIAGRAM : 19 CIRCUIT DESCRIPTION 1. Circuit Configuration by Frequency 20 2. Receiving System 20 3. Transmitter System 22 4. Frequency Synthesizer Unit 23 5. Display Section 24 6. Control Section 24 SEMICONDUCTOR DATA 27 DESCRIPTION OF COMPONENTS 31 PARTSLIST 34 EXPLODED VIEW 41 PACKING 42 ADJUSTMENT 43 TERMINALFUNCTION 49 PC BOARDVIEWS ICIRCUIT DIAGRAMS VCO (X58-4360-XX) 50 TX-RX UNIT: TX-RX (X57-4950-XX) (A/2): TK-760 I(X57-5100-XX) (A/2): TK-762 51 TX-RX UNIT: CONTROL (X57-4950-XX) (B/2): TK-760 I(X57-5100-XX) (B/2): TK-762 61 KAP-1 (PA/HA UNIT) 71 SPECIFICATIONS BACK COVER 2
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TK-760/762 GENERAL INTRODUCTION SCOPE OF THIS MANUAL Thismanual isintended foruse byexperienced technicians familiar with similartypesofcommercial grade communications equipment.Itcontains all re quired service information forthe equipment and is current as ofthe publication data.Changes whichmay occur afterpublication arecovered by either Service Bulletins orManual Revisions. Theseareissued as re quired. ORDERING REPLACEMENT PARTS Whenordering replacement partsorequipment in formation, thefullpart identification numbershould be included. Thisapplies to all parts:components, kits,or chassis. Ifthe part number is notknown, includethe chassis orkit number ofwhich it isapart, andasuffi cient description of therequired component forproper identification. PERSONNEL SAFETY Thefollowing precautions arerecommended for personnel safety: - DO NOT transmit ifsomeone iswithin two feet (0.6 meter) ofthe antenna. - DO NOT transmit until all RF connectors areverified secure andanyopen connectors areproperly termi nated. - SHUT OFF and DONOT operate this equipment nearelectrical blastingcapsor in an explosive at mosphere. - All equipment should be properlygrounded before power-up forsafe operation. - This equipment shouldbeserviced byaqualified technician only. FCC COMPLIANCE AND TYPENUMBERS Model and Frequency TX Deviation Signaling destination range(MHzl power IW) (kHz) OTDOT 2·TONE DEC DTMFENC TK-760 K 148-174 255/2.5 0 0 0 0 TK-760 K2 136-156 25 5/2.5 0 0 0 0 TK-762 K 148-174 25 5/2.5 0 0 0 0 TK-762 K2 136-156 25 5/2.5 0 0 0 0 TK-760H K 148-174 455/2.5 0 0 0 0 TK-760H K2 136-156 455/2.5 0 0 00 TK-762H K 148-174 455/2.5 0 0 00 TK-762H K2 136-156 45 5/2.5 0 0 00 PRE-INSTALLATION CONSIDERATIONS 1. UNPACKING Unpacktheradio from itsshipping container and check foraccessory items.Ifany item is missing, please contact KENWOOD immediately. 2. L1CI;NSING REQUIREMENTS Federalregulations requireastation license foreach radio installation (mobileorbase) be obtained by the equipment owner.Thelicensee is responsible foren suring transmitter power,frequency, and deviation are within thelimits permitted bythe station license. Transmitter adjustments may be performedonlyby a licensed technician holding an FCC first,second or general classcommercial radiotelephone operator's li cense.There isno license required toinstall oroperate the radio. 3. PRE-INSTALLATION CHECKOUT 3-1.Introduction Each radio is adjusted andtested before shipment. However, it is recommended thatreceiver andtrans mitter operation be checked forproper operation be fore installation. 3-2.Testing Theradio should be tested complete with all cabling and accessories as theywillbeconnected in the final installation. Transmitter frequency, deviation, and power output should be checked, as should receiver sensitivity, squelch operation, andaudio output. OT equipment operationshould be verified. 3