EFJohnson 764X, 761X service manual Ìää HUDPLFý&ìçíåý-%ýì&ýìíé.7ð1 Íëëðêäíçðçìé Ëíí

EFJohnson 764X, 761X service manual Adjustment Procedure, Test Setup, Suggested Test Equipment, Equipment Grade and Range EFJohnson 761X, 764X service manual Test Channels, Test Cable EFJohnson 764X, 761X service manual VHF Test Frequencies, UHF Test Frequencies, COMPUTER-AIDED Tuning EFJohnson 761X, 764X VHF Adjustments, Preliminary Setup, PLL Adjustment VHF Models, Transmitter Adjustments VHF Models EFJohnson 764X, 761X service manual VHF Adjustments CONT’D, Output Power Adjust, FM Deviation Adjust EFJohnson 761X, 764X Dtcs Waveform Adjust, Receiver Adjustments VHF Models, Bandpass Filter Adjust, Squelch Adjust EFJohnson 764X, 761X service manual Beep Tone Level Adjustment EFJohnson 761X, 764X service manual UHF Adjustments, PLL Adjustment UHF Models, Transmitter Adjustments UHF Models EFJohnson 764X, 761X service manual UHF Adjustments CONT’D, UHF Adjustment Points 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
Page 68

PARTS LIST

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November 1998

7-3

Part No. 001-7600-001

Page 67 Page 69
Image 68
Page 67 Page 69
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 75xx Accessories AccessoryToll-Free 800 Factory ReturnsReplacement Parts Internet HomeThis page intentionally left blank VHF and 7640 UHF Mobile Specifications GeneralGeneral Information Installation and Disassembly Transceiver InstallationInstalling Mounting Bracket Installing Microphone HangerPower Cable Installation Cable InstallationPower Cable Fuses Changing 20-Ampere Power Cable FusesUsing AN External Speaker Accessory Cable InstallationRemove shield E Transceiver DisassemblyRemoving PC Board 2-TONE/5-TONE Module Installation Installation ProcedureSetting 5-Tone Deviation 2 2-TONE ProgrammingInstallation and Disassembly Features OperationBasic Operation Controls and DisplayTransceiver Back Panel Direct Selection The F1-F4 Receiving and Placing Calls TIME-OUT Timer Programmable FunctionsOption Key Programmable Functions Function Key Label Description Section NoMonitor Mode Select Output Power SelectCall Guard Tone Select Channel SelectChannel Scan Priority Channel Sampling Programming Setup Section ProgrammingProgramming Cables Programming SoftwareStarting the Program Special Keys and FunctionsMenu Flow File MenuScreen Menu Program MenuPrint Menu Model MenuParameter Description Bank Select Setup MenuMemory Channel Screen Description LMR Models Timer Ch AtrFrequency Rx/TxAuto Reset LockoutScan ToneKey and Display Assign Screen Description Key DescriptionKey Description Label RF Power Dtmf Autodial Screen DescriptionSelection Bank/FreeParameter Description Continuous Tone Screen DescriptionScan Function Screen Description Stop Timer 2-Tone Code Channel Screen DescriptionResume Auto CHEXO Timer Timer Auto TxAuto Tx StunCommon Screen Description Expert Screen Description Unique PMR European Screens Unique PMR ScreensCloning Programming ONE Transceiver with Another Memory Channel Screen PMR Models This page intentionally left blank VHF 7610 Circuit Description VHF Receiver CircuitAudio Amplifier Circuit Receiver Mute CircuitPower Amplifier Module VHF Transmitter CircuitMicrophone Amplifier Circuit Modulation CircuitPLL Circuit APC CircuitVHF PLL Circuit Pin Port Description VHF IC PIN DescriptionsLine Description VHF I/O Expander IC5 Main Unit PinVHF Port Expander IC11 Main Unit Pin Port Description NameUHF 7640 Circuit Description UHF Receiver CircuitSecond if System IC1 UHF UHF Transmitter Circuit PLL Circuit UHF UHF PLL CircuitUHF Power Supply UHF CPU IC1 Port AllocationUHF I/O Expander IC12 Main Unit UHF Port Expander IC13 Main UnitAdjustment Procedure Test SetupSuggested Test Equipment Equipment Grade and RangeTest Channels Test CableUHF Test Frequencies COMPUTER-AIDED TuningVHF Test Frequencies VHF Adjustments VHF AdjustmentsPreliminary Setup PLL Adjustment VHF ModelsFM Deviation Adjust VHF Adjustments CONT’DOutput Power Adjust Dtcs Waveform Adjust Receiver Adjustments VHF ModelsBandpass Filter Adjust Squelch AdjustBeep Tone Level Adjustment Beep Tone LevelTransmitter Adjustments UHF Models UHF AdjustmentsPLL Adjustment UHF Models UHF Adjustments CONT’D UHF Adjustment PointsUHF Adjustments CONT’D Receiver Adjustments UHF Models Parts List Æçìíýõ9+ôý0$,1ý81,7Íäç HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ 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 VHF 7610 Exploded View Front UnitUHF 7640 Exploded View Schematic Diagrams and Component Layouts VHF 7610 Block DiagramMain Unit Front UnitVHF 7610 Transistor Basing Diagrams Foldout → VHF 7610 Main Board TOP View VHF 7610 Main Board Schematic VHF Main UnitUHF 7640 Block Diagram UHF 7640 Main Board Bottom View UHF 7640 Main Board TOP View J4 T o O p tion al Un itUHF 7640 Main Board Schematic VHF/UHF Front Unit Board TOP View VHF/UHF Front Unit Board Bottom ViewVHF/UHF Front Unit Schematic UHF 7640 Transistor Basing Diagrams
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