EFJohnson 7780 service manual Logic Board TOP View, HD1

Page 106

On-Off Volume Control

Channel Switch

HD1

R401

R402

Q401

R403

 

R404

 

C405

 

 

 

D402

D401

 

C406

S1

 

 

 

Q403

 

 

 

 

 

 

 

C404

C143

 

 

 

R164

 

 

R117

 

Q102

Q105

Q109

 

 

 

 

 

 

 

 

 

 

 

 

C29

IC401

C420 C408

C407

R326

D312

Q302

R336

 

C116

R124

C110

R146

 

 

 

 

 

Q106

Q402

C115

R120

R119

R118

R149

 

C123

C403

IC106

IC105

IC104

C141

 

C122

R131

C121

R132

 

C140

C139

C142

R145

C136

C138

C113

C36

C401

D403

D311

D313

C32

C419

R335

R163

 

R337

 

EXTMIC TxD RxD LVcc GND PSW RESET AFO

 

D310

PTT

 

 

 

 

 

 

 

9

 

 

1

 

HC2

HC1

C402

R315

D302

R314

C307 R311

R310

R313

C33

 

Q301

C28

 

HC3

C27

R312

 

IC305

 

D305

R316

R318

D306

IC309

 

C145

Q107

R147

 

R148

C144

 

 

 

 

 

 

 

 

 

D103

 

C158

C157

 

 

 

R317

 

 

 

D105

R303

C301

 

 

R160

 

R319

D104

 

 

 

 

 

 

 

R321

 

IC114

R304

 

D301

 

 

 

 

 

 

C306

R306

C53

R330

 

 

 

 

 

 

 

R331

R162

R161

 

 

 

W9

C137

C303

C304

C305

W10

HR1

C111

C118

R127

R408

J2

TO

ACCESSORY

JACK

W8

To DC Power

Flex Circuit

C134

C109

C159

R113

Q101

HR2

 

W7

R125

R339

R169

 

 

R338

R168

Q112

 

R116

R112

 

R407

IC115

C49

 

C414

R406

R248

R170

IC113

IC107

Q108

C156

R158

C155

R159

Q104

R141

D101

D102

R139

R140

 

 

 

 

 

 

 

 

 

R157

R156

C153

R154

R153

C17

C129

C52

 

 

 

 

 

 

 

 

R322

X2

R324

 

R325

 

C21

 

C22

 

R328

 

R329

 

D307

 

R320

1

GND

IC306

SPE SPE SP SP L5V

IC112

IC102

 

IC304

IC303

 

AUXB

 

J3

MICE

 

 

FCNB

 

5

GND

X1

 

 

R323

C54

C55

R333

R308

R309

R332

C431

C430

C454

MSO

MSCK DISST DISEN KEYSO

W11

IC103

 

C19

C26

C18

C154

R155

C151

R152

C152

C125

R134

C225

C227

R151

R150

C150

Q103

 

 

C124

R135

C127

R136

R133

C128

R137

C126

D308

TO PTT BOARD

C216

Q201

C218

R239

 

 

 

 

R237

C447

C448

C449

KEYS1

KEYS2

KEYS3

KEYRO KEYR1 KEYR2 KEYR3

TXLED

 

C446

TO

C441

 

DISPLAY UNIT

C434

 

 

C451

C456

IC403

C222

C224

R210

C107

IC208

R110

R111

R105

IC101

C51

C102

R104

R250

R101

HC4

 

 

 

 

 

 

 

 

 

 

IC110

C103

R106

R103

R102

 

C13

C101

 

 

 

R165

R252

 

Q110

R251

 

 

 

 

 

 

 

 

C10

C12

C14

TO RF UNIT

1 30

PWR

R5V

TMUT

DET

T5V

NOISE

LTR

RSSI

MOD

W/N

+5V

PLLST

TA

PLLSO

C6

C24

C25

C3

C423

C11

R241

C15

C422

 

Q406

IC210

 

W12

R227

R302

R249

R301

 

 

IC206

R238

 

 

C217

R236

 

 

C215

 

 

C219

R235

R231

C43

Q111

R232

 

 

 

 

 

R240

 

IC203

 

C440

C439

C438

C435

C436

C437

DSYLED BATLED BKLED GND

C228

C206

C104

R107

IC201

R228

C9

J1

ULOCK

PLLSK

GND

RF5C

GND

GND

BATT

Vcc

BATT

Vcc

C5

C7

C2

C23

C4

C45

IC209

R226

R244

C207

 

R167

 

 

R212

 

W6

IC204

W4

R254

 

C450

C443

C444

MICE

MIC

GND GND

 

R202

C432

R203

 

C46

R201

R247

R206

C201

 

R253

R246 C202 R204

R245

C223

C130

R166

R143

R205

 

 

IC202

 

C203

 

C204

 

R208

 

 

 

R142

C108

R109

C48

C416

C105

Q404

R108

C106

 

C415

C412

C421

 

IC402

 

C413

C411 C410

15 16

C409

BATT

GND

BATT

GND

BATT

GND

C31

C30

C1

R243

C212

R224

C213

C44

R223

 

 

R225

C226

C214

C211

 

 

R221

IC205

 

C210

 

 

 

 

R220

C208

R222

 

C16

R216

C209

C229

R211

C205

R213

 

 

R214

 

Q405

R215

 

R207 C418

W5

 

D309

 

 

GND

1

20

TX OUT

 

TX IN

 

 

CLR/CODE

 

 

T5C

 

J4

OP1

 

 

OP2

 

 

OP3

10 11

OP4

SW BATT

 

 

C433

PTT OUT

PTT IN

RX IN

RX OUT

EXTDC

OPTB

AMUTI

AMUTO

BEEPO

GND

LOGIC BOARD TOP VIEW

LOGIC BOARD TOP VIEW

November 1999

8-6

Part No. 001-7780-500

Page 105 Page 107
Image 106
Page 105 Page 107
Contents 7780 Page Page Table of Contents Table of Contents CONT’D List of Tables List of FiguresGeneral Information Scope of Manual Equipment DescriptionPart Number Breakdown AccessoriesFactory Customer Service Transceiver IdentificationToll-Free 800 AccessoriesAccessory Factory ReturnsInternet Home Intrinsically Safe Information Replacement PartsDefinitions Intrinsically Safe and Nonincendive Ratings Temperature Code T3CPossible Ignition Sources Classification of Hazardous Areas and AtmospheresTypical Hazard Group Class Accessing PC BoardsMaterial Classification Area ClassificationRemoving RF Unit Removing Logic UnitSpecifications GeneralTransceiver Operation FeaturesControls and Display TX Indicator Red Indicates when the transmitter is keyed Low-Battery Indicator AmberFront Panel Keys Full Keypad Model DisplayDisplay General Operation Turning Power on and Setting VolumeOption Switches BacklightFunction Conv Option Switch FunctionsSee Tone ENABLE/DISABLE ScanningConventional and SMARTNET/ Smartzone Operation Display Mode Selection Conventional FeaturesMonitoring Before Transmitting Busy Channel Lockout Monitor ModeCall Guard Squelch Power Output Select Penalty TimerConversation Timer Conventional Mode ScanningPriority Channel Sampling DTMF/ANI Signaling Standard Conventional CallsStandard Group Calls SMARTNET/SMARTZONE FeaturesViewing Unit ID Enhanced Private Conversation CallsTransceiver Operation Private Conversation II Calls Telephone Calls Call Alert Messaging Emergency Alarm and CallSending Status Conditions SMARTNET/SMARTZONE Scanning Failsoft OperationDynamic Regrouping Supervisory Tones Menu Description Keypad ProgrammingZone Change Parameter System Parameters Channel Change ParameterChannel Parameters Transceiver Programming Programming SetupPctrunk Software Installation Computer DescriptionProgramming File Types Connecting RPI to Computer and TransceiverStarting and Exiting Help FilesFile Size Indication Screen Pop-Up Buttons and File Size IndicatorProgramming Procedure Creating and Displaying SystemsMenu Commands Menu BarSystems Menu Radio Type MenuDownload Menu Upload Menu Window MenuBand DefaultsRADIO-WIDE Parameter Screens ZonesModify List Screen Radio Wide Scan ListRadio-Wide Scan List Screen Assign Function ButtonsFull Spectrum CC Scan RADIO-WIDE Conventional ScreenRADIO-WIDE SMARTNET/SMARTZONE Screen Hot DtmfProgramming Conventional Systems and Channels Adjustable ParametersRADIO-WIDE Portable Options Screen Conventional System General ScreenKeypad Editing TimersConventional System Modify Scan List Screen Scan List ButtonSetting UP Conventional Channels Scan TimersPriority Channel Selection Conventional Channel Screen Parameters Selected ChannelChannel Type Transmit PowerSignaling Tx Time-OutISW Delay Time Restricted AccessTime-Out Timer Splinter ChannelsPhone Interconnect SMARTNET/SMARTZONE System Other ID’S ScreenSMARTNET/SMARTZONE System Phone Interconnect Screen Private CallSMARTNET/SMARTZONE System Talk Groups Screen SMARTNET/SMARTZONE System Emergency Settings ScreenEmergency Alarm Failsoft ChannelTrunking Phone List Screen SMARTNET/SMARTZONE System Lists ScreensMessage Aliasing Screen Announcement Groups Screen Control Channels ScreenTrunking Call List Screen Status Aliasing Screen Setting UP SMARTNET/SMART- Zone ChannelsSMARTNET/SMARTZONE Channel Screen Parameters 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 Circuit Description Power Switching and RegulationPower Switching Synthesizer DescriptionSynthesizer Chip IC1 VCO and Tcxo ModulationCharge Pump Q1, Q2, Loop Filter RF Amplifier Q1, First Mixer Q2 Receiver Circuit DescriptionIf Amplifier Q2, LIMITER/DETECTOR IC3 Transmitter Description Antenna Switch and LOW-PASS FilterSquelch Circuit IC4A/B, IC5A Amplifier Q9, Driver Q8Control Logic and Display Receive Audio ProcessingMicroprocessor IC306 Pin Descriptions Pin Port Name Input or Description Active High OutputHvfulswlrq Receive and Transmit Data Processing Audio Amplifier IC104-IC106Receive Data FILTER/DETECTOR IC102A/B, IC107A/B Transmit Data Filter IC206B/ IC206A Transmit Audio ProcessingLOW-PASS Filter IC205A/B Smartnet Data ProcessingPower Setting Operating Time Battery Pack and Charger InformationBattery Pack 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 ScreenHigh Power Level = 3.0 watts Low Power Level = 1.0 watt Transmit Frequency and PowerTransmit Power Adjustment Screen Modulation BalanceAudio Deviation Squelch AdjustRssi Adjust Data DeviationPerformance Tests Receiver Performance TestsTransmit Frequency Power OutputTransmitter Performance Tests Transmit ModulationThis page intentionally left blank Chassis Parts Parts ListDisplay Assembly Ref No DescriptionKEY Assembly Display AssemblyKEY Assembly If AssemblyIf 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 TOP View Schematic Diagrams and Component LayoutsPLL Board Bottom 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
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