EFJohnson 761X, 764X service manual 5HIý1Rï

EFJohnson 761X, 764X service manual UHF Adjustments CONT’D Receiver Adjustments UHF Models, Bandpass Filter Adjust EFJohnson 764X, 761X service manual Parts List, Æçìíýõ9+ôý0$,1ý81,7 EFJohnson 761X, 764X service manual Íäç HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ Íëëðêäíçðíçí Íäæ EFJohnson 764X, 761X service manual Ìää HUDPLFý&ìçíåý-%ýì&ýìíé.7ð1 Íëëðêäíçðçìé Ëíí EFJohnson 761X, 764X service manual Ëäí HUDPLFý&ìçíåý-%ýìýìíê.ð7ð$ Íëëðêäíçðíçê Ëäì EFJohnson 764X, 761X service manual RLOý0/ìçíå$ýì5í.ð7 Íëëðêäíçðçèç 03ì Ýìäëëý9&2ýFDVH EFJohnson 761X, 764X service manual 5íéé 5HVý5-ê*-ýìííý9ýõìíýRKPô Íëëðêäíçðìêå 5íéè EFJohnson 764X, 761X service manual 5ìèé 5HVý5-ê*-ýìíéý9ýõìííýNýRKPô EFJohnson 761X, 764X service manual Æçéíýõ8+ôý0$,1ý81,7 EFJohnson 764X, 761X service manual Íêì HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ Íëëðêäíçðíçí Íêë EFJohnson 761X, 764X service manual Íäé HUDPLFý+0çí6-ý&+ýíêíýèíí9ý EFJohnson 764X, 761X service manual Õéäíðèìëý0+ô Ìèì EFJohnson 761X, 764X service manual 5HIý1Rï EFJohnson 764X, 761X service manual Êëç EFJohnson 761X, 764X service manual Íëëðêäíçðäèë EFJohnson 764X, 761X service manual 4éì 7UDQVLVWRUý7&êçê.ý7ìéæ EFJohnson 761X, 764X service manual 5íæé EFJohnson 764X, 761X service manual 5ìçå 5HVý5-ê*-ýìíéý9ýõìííýNýRKPô EFJohnson 761X, 764X service manual 5217ý81,7 Õ9+ý$1ý8+ý02/6ô EFJohnson 764X, 761X service manual =HQHUý0$åíèìð0ýõ7ô EFJohnson 761X, 764X service manual Æçìíýõ9+ôý&+$66,6ý3$576 EFJohnson 764X, 761X service manual VHF 7610 Exploded View, Front Unit EFJohnson 761X, 764X service manual UHF 7640 Exploded View EFJohnson 764X, 761X service manual Schematic Diagrams and Component Layouts, VHF 7610 Block Diagram, Main Unit, Front Unit EFJohnson 761X, 764X service manual VHF 7610 Transistor Basing Diagrams EFJohnson 764X, 761X service manual Foldout → EFJohnson 761X, 764X service manual VHF 7610 Main Board TOP View EFJohnson 764X, 761X service manual VHF 7610 Main Board Schematic, VHF Main Unit EFJohnson 761X, 764X service manual UHF 7640 Block Diagram EFJohnson 764X, 761X service manual UHF 7640 Main Board Bottom View EFJohnson 761X, 764X service manual UHF 7640 Main Board TOP View, J4 T o O p tion al Un it EFJohnson 764X, 761X service manual UHF 7640 Main Board Schematic EFJohnson 761X, 764X service manual VHF/UHF Front Unit Board TOP View, VHF/UHF Front Unit Board Bottom View EFJohnson 764X, 761X service manual VHF/UHF Front Unit Schematic EFJohnson 761X, 764X service manual UHF 7640 Transistor Basing Diagrams
Page 77

PARTS LIST

7640 (UHF) Main Unit

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&ëåë (OHFWURO\WLFý(&(9í-$ëëí65 íëëðêäíçðçëê &ëåê &HUDPLFý&ìçíåý-%ýì+ýéæì.ð7ð$ íëëðêäíçðíèä &ëåé &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &ëåè &HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ íëëðêäíçðíçí &ëåç &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &ëåæ &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &ëåå &HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ íëëðêäíçðíçí &ëåä &HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ íëëðêäíçðíçí &ëäì &HUDPLFý&ìçíåý-%ýì&ýìíé.7ð1 íëëðêäíçðçìé &ëäë &HUDPLFý&ìçíåý-%ýì&ýéæê.ð7ð$ íëëðêäíçðíåí &ëäê &HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ íëëðêäíçðíçí &ëäè &HUDPLFý&ìçíåý-)ýì&ýìíé=ð7ð$ íëëðêäíçðíæç &ëäç &HUDPLFý&ìçíåý-)ýì&ýìíé=ð7ð$ íëëðêäíçðíæç &ëäæ &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &ëäå &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &ëää &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êíí &HUDPLFý&ìçíåý&+ýì+ýíéí%ð7ð$ íëëðêäíçðçíä &êíì &HUDPLFý&ìçíåý&+ýì+ýíéí%ð7ð$ íëëðêäíçðçíä &êíë &HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ íëëðêäíçðíçí &êíê &HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ íëëðêäíçðíçí &êíé &HUDPLFý&ìçíåý&+ýì+ýìëí-ð7ð$ íëëðêäíçðíçç &êíç &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí

&êíæ 7DQWDOXPý(&67í-<éæè5 íëëðêäíçðçëä &êíå &HUDPLFý&ìçíåý&+ýì+ýíìí%ð7ð$ íëëðêäíçðíåè &êíä &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìí &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìì &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìë &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìê &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìé &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìè &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìç &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìæ &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êìå &HUDPLFý&ìçíåý&+ýì+ýìíí'ð7ð$ íëëðêäíçðèäå &êìä &HUDPLFý&ìçíåý-%ýì+ýéæë.ð7ð$ íëëðêäíçðíçë &êëì &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êëë &HUDPLFý&ìçíåý-)ýì&ýëëé=ð7ð$ íëëðêäíçðäìå &êëê &HUDPLFý&ìçíåý&+ýì+ýìíí'ð7ð$ íëëðêäíçðèäå &êëé &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí &êëè &HUDPLFý&ìçíåý&+ýì+ýéæí-ð7ð$ íëëðêäíçðçíí

November 1998

 

Part No. 001-7600-001

7-12

Page 76 Page 78
Image 77
Page 76 Page 78
Contents 761x VHF 764x UHF Conventional Mobile Conventional FM TWO-WAY Radio Table of Contents Table of Contents CONT’D Schematic Diagrams and Component Layouts General Information Accessory 75xx AccessoriesToll-Free 800 Factory ReturnsInternet Home Replacement PartsThis page intentionally left blank General VHF and 7640 UHF Mobile SpecificationsGeneral Information Transceiver Installation Installation and DisassemblyInstalling Microphone Hanger Installing Mounting BracketPower Cable Installation Cable InstallationChanging 20-Ampere Power Cable Fuses Power Cable FusesUsing AN External Speaker Accessory Cable InstallationRemove shield E Transceiver DisassemblyRemoving PC Board Installation Procedure 2-TONE/5-TONE Module InstallationSetting 5-Tone Deviation 2 2-TONE ProgrammingInstallation and Disassembly Operation FeaturesBasic Operation Controls and DisplayTransceiver Back Panel Direct Selection The F1-F4 Receiving and Placing Calls Programmable Functions TIME-OUT TimerOption Key Programmable Functions Function Key Label Description Section NoOutput Power Select Monitor Mode SelectCall Guard Tone Select Channel SelectChannel Scan Priority Channel Sampling Section Programming Programming SetupProgramming Cables Programming SoftwareSpecial Keys and Functions Starting the ProgramMenu Flow File MenuProgram Menu Screen MenuPrint Menu Model MenuParameter Description Bank Select Setup MenuMemory Channel Screen Description LMR Models Ch Atr TimerFrequency Rx/TxLockout Auto ResetScan ToneKey Description Key and Display Assign Screen DescriptionKey Description Label Dtmf Autodial Screen Description RF PowerSelection Bank/FreeParameter Description Continuous Tone Screen DescriptionScan Function Screen Description 2-Tone Code Channel Screen Description Stop TimerResume Auto CHTimer Auto Tx EXO TimerAuto Tx StunCommon Screen Description Expert Screen Description Unique PMR Screens Unique PMR European ScreensCloning Programming ONE Transceiver with Another Memory Channel Screen PMR Models This page intentionally left blank VHF Receiver Circuit VHF 7610 Circuit DescriptionReceiver Mute Circuit Audio Amplifier CircuitVHF Transmitter Circuit Power Amplifier ModuleMicrophone Amplifier Circuit Modulation CircuitPLL Circuit APC CircuitVHF PLL Circuit Pin Port Description VHF IC PIN DescriptionsLine Description Pin VHF I/O Expander IC5 Main UnitVHF Port Expander IC11 Main Unit Pin Port Description NameUHF Receiver Circuit UHF 7640 Circuit DescriptionSecond if System IC1 UHF UHF Transmitter Circuit UHF PLL Circuit PLL Circuit UHFUHF CPU IC1 Port Allocation UHF Power SupplyUHF Port Expander IC13 Main Unit UHF I/O Expander IC12 Main UnitTest Setup Adjustment ProcedureSuggested Test Equipment Equipment Grade and RangeTest Cable Test ChannelsUHF Test Frequencies COMPUTER-AIDED TuningVHF Test Frequencies VHF Adjustments VHF AdjustmentsPreliminary Setup PLL Adjustment VHF ModelsFM Deviation Adjust VHF Adjustments CONT’DOutput Power Adjust Receiver Adjustments VHF Models Dtcs Waveform AdjustBandpass Filter Adjust Squelch AdjustBeep Tone Level Beep Tone Level AdjustmentTransmitter Adjustments UHF Models UHF AdjustmentsPLL Adjustment UHF Models UHF Adjustment Points UHF Adjustments CONT’DUHF Adjustments CONT’D Receiver Adjustments UHF Models Æçìíýõ9+ôý0$,1ý81,7 Parts ListÍäç HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ Íëëðêäíçðíçí Íäæ Ìää HUDPLFý&ìçíåý-%ýì&ýìíé.7ð1 Íëëðêäíçðçìé Ëíí Ëäí HUDPLFý&ìçíåý-%ýìýìíê.ð7ð$ Íëëðêäíçðíçê Ëäì RLOý0/ìçíå$ýì5í.ð7 Íëëðêäíçðçèç 03ì Ýìäëëý9&2ýFDVH 5íéé 5HVý5-ê*-ýìííý9ýõìíýRKPô Íëëðêäíçðìêå 5íéè 5ìèé 5HVý5-ê*-ýìíéý9ýõìííýNýRKPô Æçéíýõ8+ôý0$,1ý81,7 Íêì HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ Íëëðêäíçðíçí Íêë Íäé HUDPLFý+0çí6-ý&+ýíêíýèíí9ý Õéäíðèìëý0+ô Ìèì 5HIý1Rï Êëç Íëëðêäíçðäèë 4éì 7UDQVLVWRUý7&êçê.ý7ìéæ 5íæé 5ìçå 5HVý5-ê*-ýìíéý9ýõìííýNýRKPô 5217ý81,7 Õ9+ý$1ý8+ý02/6ô =HQHUý0$åíèìð0ýõ7ô Æçìíýõ9+ôý&+$66,6ý3$576 Front Unit VHF 7610 Exploded ViewUHF 7640 Exploded View VHF 7610 Block Diagram Schematic Diagrams and Component LayoutsMain Unit Front UnitVHF 7610 Transistor Basing Diagrams Foldout → VHF 7610 Main Board TOP View VHF Main Unit VHF 7610 Main Board SchematicUHF 7640 Block Diagram UHF 7640 Main Board Bottom View J4 T o O p tion al Un it UHF 7640 Main Board TOP ViewUHF 7640 Main Board Schematic VHF/UHF Front Unit Board Bottom View VHF/UHF Front Unit Board TOP ViewVHF/UHF Front Unit Schematic UHF 7640 Transistor Basing Diagrams
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