EFJohnson 7780 service manual RF Board TOP View, Mic

Page 104

 

 

 

 

 

 

R26

C35

D5

C36

R22

R25

C38

IC2

 

 

 

 

 

 

 

R27

C41

 

R28

R29

C122

J1

MIC

JACK

C140

W1

L13 L34

C34

R21

R23

C33

D4

 

C37

D1

C1

L1

C30

 

 

D2

HC14

 

 

 

 

 

 

C2

HC17

C43

R24

C44

R32

R33

 

 

L2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R34

R35

D3

D11

 

 

 

HC9

 

C45

C46

 

 

 

 

 

 

 

Q5

R36

 

R31

R30

 

C42

C40

C47

 

Q6

 

C49 R39

 

FI7

FI1

HC6

 

HC5

Q21 Q20

R3

C4 L32

C31

Q7

C111

C137

R37

C48

C50

W/N

FIOUT

 

GND

 

IF5V

 

FIIN

 

R5V

BOARD

GND

IFIN

R5V

TOIF

GND

HC2

Q19

C27

R96

 

HC3

 

R95

 

 

 

 

 

 

C29

R102

R91

 

D15

D16

 

 

 

 

 

 

 

 

 

 

R92

 

 

 

HC7

 

D13

 

 

 

C28

R103

D14

 

HC8

R93

R94

C135

R98

C8

C9

R1

L9

C15

L10

C18

W4

R99

R2

C5

L5

HR1

C16

C17

C20

R6

W5

R4

R5

C25

C138

Q1 R104

C7

C11

L8

L7

L6

Q2 C14

 

C13

C12

R7

W6

L11

 

R9

L14

R20

C32

C59

HC20

C55

C54

FI4

Q14

 

 

R77

D10

FI5

 

 

FI2

 

 

FI6

 

 

INFIN

GND

XTAL RSSI NOISE DET

C126

FI3

C26

C76

R101

R53

C78

 

C139

C77

 

C19

 

C10

 

R51

R97

 

L19

C75

 

Q10

R50

 

C117

 

R10

 

R78

 

R11

C125

R12

C24

C23

Q17

 

C22

L12

 

 

D7

R79

 

C124

L29

C72

R49

R48

HC16

C109

 

HC18

 

R54

 

 

 

 

C105

 

L20

C112

C106

Q11

C79

R52

C69

Q9

R80

C127

C73

R47

 

 

R85

 

C70

 

C120

IC1

L33

L26

C52

L25

HC12

C91

IC4

C53

C95

 

 

 

 

 

 

 

 

C94

L30

 

 

C97

 

C133

C134

 

 

 

 

 

 

 

L28

C132

 

R75

X3

C128

Q18

 

 

 

 

R76

 

R87

C131

C104

 

C130

L27

 

 

 

C108

R5V

DET

NOISE

RSSI

W/N

PLLST

PLLSO

PLLSK

RF5C

GND

VCC

VCC

GND

GND

GND

HC10

 

 

 

C93

R56

 

 

 

R60

 

 

PWR

 

 

 

 

 

 

BOARD

 

TMUT

 

R61

 

T5V

 

 

LTR

 

R62

 

MOD

 

 

+5V

 

 

 

 

LOCKUP

 

 

J1 LOGIC

 

C82

 

 

ULOCK

C107

 

 

GND

 

 

 

GND

Q12

 

 

BATT

 

 

BATT

 

TO

 

BATT

 

 

 

 

BATT

C83

 

 

 

BATT

L22

 

 

HC1

C103

C84

R66

C102

C101

 

R55

 

C114

 

C71

 

R46

L17

 

Q16

 

C80

 

C74

 

C67

 

C66

 

 

 

 

 

 

 

R57

 

R69

 

C68

 

 

 

 

C121

 

R58

 

C90

 

L16

 

 

Q8

 

 

 

R59

 

Q13

 

C64

 

 

 

L24

 

C81

 

D6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R65

 

C85

R45

C65

R44

R83

C63

L15

C62

 

R64

 

C89

 

 

 

 

 

 

 

 

 

 

R63

 

W3

HW2

HC13

 

C57

 

 

 

 

D9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C100

R68

R67

C136

C98

L23

 

 

 

C58

R82

FIN

GND

PLLSK

PLLSO PLLST LOCKUP LD

LO

GND

RF5V

LV

GND

 

 

 

 

 

 

 

 

RF BOARD BOTTOM VIEW

 

 

 

TO PLL BOARD

 

 

 

 

 

RF BOARD TOP VIEW

R74

R41

R42

R43

C119

C60

R72

R73

C96

HC15

R86

C129

IC3

C88

RF5V

RF5C

GND

VCC VCOV

CPV

November 1999

8-4

Part No. 001-7780-500

Image 104
Contents 7780 Page Page Table of Contents Table of Contents CONT’D List of Tables List of FiguresGeneral Information Scope of Manual Equipment DescriptionAccessories Factory Customer ServicePart Number Breakdown Transceiver IdentificationAccessories AccessoryToll-Free 800 Factory ReturnsDefinitions Replacement PartsInternet Home Intrinsically Safe Information Temperature Code T3C Possible Ignition SourcesIntrinsically Safe and Nonincendive Ratings Classification of Hazardous Areas and AtmospheresAccessing PC Boards Material ClassificationTypical Hazard Group Class Area ClassificationRemoving RF Unit Removing Logic UnitSpecifications GeneralControls and Display FeaturesTransceiver Operation TX Indicator Red Indicates when the transmitter is keyed Low-Battery Indicator AmberDisplay DisplayFront Panel Keys Full Keypad Model Turning Power on and Setting Volume Option SwitchesGeneral Operation BacklightSee Option Switch FunctionsFunction Conv Tone ENABLE/DISABLE ScanningConventional and SMARTNET/ Smartzone Operation Monitoring Before Transmitting Conventional FeaturesDisplay Mode Selection Call Guard Squelch Monitor ModeBusy Channel Lockout Penalty Timer Conversation TimerPower Output Select Conventional Mode ScanningPriority Channel Sampling DTMF/ANI Signaling Standard Conventional CallsSMARTNET/SMARTZONE Features Viewing Unit IDStandard Group Calls Enhanced Private Conversation CallsTransceiver Operation Private Conversation II Calls Telephone Calls Call Alert Sending Status Conditions Emergency Alarm and CallMessaging Dynamic Regrouping Failsoft OperationSMARTNET/SMARTZONE Scanning Supervisory Tones Zone Change Parameter Keypad ProgrammingMenu Description Channel Parameters Channel Change ParameterSystem Parameters Programming Setup Pctrunk Software InstallationTransceiver Programming Computer DescriptionConnecting RPI to Computer and Transceiver Starting and ExitingProgramming File Types Help FilesScreen Pop-Up Buttons and File Size Indicator Programming ProcedureFile Size Indication Creating and Displaying SystemsMenu Commands Menu BarRadio Type Menu Download Menu Upload MenuSystems Menu Window MenuDefaults RADIO-WIDE Parameter ScreensBand ZonesRadio Wide Scan List Radio-Wide Scan List ScreenModify List Screen Assign Function ButtonsRADIO-WIDE Conventional Screen RADIO-WIDE SMARTNET/SMARTZONE ScreenFull Spectrum CC Scan Hot DtmfAdjustable Parameters RADIO-WIDE Portable Options ScreenProgramming Conventional Systems and Channels Conventional System General ScreenTimers Conventional System Modify Scan List ScreenKeypad Editing Scan List ButtonPriority Channel Selection Scan TimersSetting UP Conventional Channels Conventional Channel Screen Parameters Selected ChannelTransmit Power SignalingChannel Type Tx Time-OutRestricted Access Time-Out TimerISW Delay Time Splinter ChannelsSMARTNET/SMARTZONE System Other ID’S Screen SMARTNET/SMARTZONE System Phone Interconnect ScreenPhone Interconnect Private CallSMARTNET/SMARTZONE System Emergency Settings Screen Emergency AlarmSMARTNET/SMARTZONE System Talk Groups Screen Failsoft ChannelMessage Aliasing Screen SMARTNET/SMARTZONE System Lists ScreensTrunking Phone List Screen Announcement Groups Screen Control Channels ScreenTrunking Call List Screen SMARTNET/SMARTZONE Channel Screen Parameters Setting UP SMARTNET/SMART- Zone ChannelsStatus Aliasing Screen SMARTNET/SmartZone Channel Screen Other Screen ParametersCall Guard CTCSS/DCS Codes and Tones Recommended Tone Call Guard Codes FreqMHz Channels MHz Channels MHz Channels MHz Channels MHz Channels MHz Channels Power Switching and Regulation Power SwitchingCircuit Description Synthesizer DescriptionCharge Pump Q1, Q2, Loop Filter VCO and Tcxo ModulationSynthesizer Chip IC1 If Amplifier Q2, LIMITER/DETECTOR IC3 Receiver Circuit DescriptionRF Amplifier Q1, First Mixer Q2 Antenna Switch and LOW-PASS Filter Squelch Circuit IC4A/B, IC5ATransmitter Description Amplifier Q9, Driver Q8Control Logic and Display Receive Audio ProcessingMicroprocessor IC306 Pin Descriptions Pin Port Name Input or Description Active High OutputHvfulswlrq Receive Data FILTER/DETECTOR IC102A/B, IC107A/B Audio Amplifier IC104-IC106Receive and Transmit Data Processing Transmit Data Filter IC206B/ IC206A Transmit Audio ProcessingLOW-PASS Filter IC205A/B Smartnet Data ProcessingBattery Pack and Charger Information Battery PackPower Setting Operating Time Function Fahrenheit CelsiusBattery Pack and Charger Information Alignment Procedure and Performance Tests Test SetupTune Software Hqhudo Mm/3/32 Mm/1/8 Phone JackPreliminary Setup Main Pctune ScreenTransmit Frequency and Power Transmit Power Adjustment ScreenHigh Power Level = 3.0 watts Low Power Level = 1.0 watt Modulation BalanceSquelch Adjust Rssi AdjustAudio Deviation Data DeviationPerformance Tests Receiver Performance TestsPower Output Transmitter Performance TestsTransmit Frequency Transmit ModulationThis page intentionally left blank Parts List Display AssemblyChassis Parts Ref No DescriptionKEY Assembly Display AssemblyIf Assembly If AssemblyKEY Assembly PLL Assembly RF UnitRF Unit NJM2904V-TE1 IC RF Unit Logic Unit Logic Unit TDA7233D IC Logic Unit 200K ERJ3GE MP35 MP18 MP25 KEY Front Panel EP2EP1 MP32 MP33 MP27 MP34 MP28 MP29 MP23 MP22 MP30 MP24 MP26 MP18 PLL Board Bottom View Schematic Diagrams and Component LayoutsPLL Board TOP View If Board TOP View If Board Bottom ViewTransceiver Block Diagram RF UnitRF Board TOP View MICRF Board Schematic If AMPLogic Board TOP View HD1Logic Board Schematic Receive Audio ProcessingDisplay Board Bottom View GND KEYR3 KEYR2 KEYR1 KEYR0 KEYS3 KEYS2 KEYS1 KEYS0 GNDDisplay Board Schematic DS3 DS4 DS5KEY Board Front View KEY Board Back ViewKEY Board Schematic S S R R R RScan HC2 HC7 HC8 HC3 Schematic Diagrams and Component Layouts