EFJohnson 7780 service manual Logic Board Schematic, Receive Audio Processing

BATT

RECEIVE AUDIO PROCESSING

BANDPASS FILTER (300-3000 Hz)

BATT

F1

PSW

LVCC

LVCC

C402

TO

R5V

AFO

Q111

R167

C51

C103

5.6K

AUDIO AMP

L5V

33P

CHASSIS

BATTERY

2SA1576

NPSPAC

0.039

R109

100K

0.047

UNIT

0.1

DTC144EE

C104

0.01

On-Off/

C111

IC104

R164

R146

Q102

6.8K

6.8K

56K

0.001

4

C105

4.7

5

OUTPUT

+VS

100K

DTC144EE

C110

R118

R119

HD1

R106

Volume

RX_OUT

C118

6

3

Q105

Z

SVR

GND

RX_IN

390K

R107

R108

Switch

0.1

7

-INPUT

MUTE

2

R124

R120

LEVEL ADJ R101

0.01

3

8

5

7

R127

8

+INPUT

GND

1

C36

C101

R103

R104

1

W4

27K

560K

10K

100KAMP SELECT

33P

JACK BOARD

2

IC101A

6

R163

2.7

TDA7233D

Q109

C143

Q302

1K

MA8160

R105

1

C116

C115

150K

ERJ3GE-JPW

47K

47K

4

C106

R110

2.2K

4.7

AUDIO AMP

1

0.047

1

R326

R336

D312

52396-0990

(CHASSIS UNIT)

120K

IC101B

Q110

C102

0.01

150K

IC105

MC33172D

C137

C138 5

100K

C29

W/N

1

5

R102

470P

MC33172D

HC1

4

DTC144EE

DTC144EE

OUTPUT

+VS

33P

Top on

100K

R111

C107

R117

C

6

3

MD1

2

SVR

GND

R335

Radio

100K

1

RV-283

C136

7

2

RESET

J2

R145

-INPUT

MUTE

2SB798

10K

8

1

AFO

AFO

1

9

3

+INPUT

GND

470

1

4

RECEIVE DATA PROCESSING

Q106

SUPPLY SWITCHING

RESET

RESET

0.1

TDA7233D

R325

D311

2

2

8

DC RESTORATION

C419

R168

RXD

PSW

PSW

2SC4081

3

3

7

+5S

UMG2

C140

MA8056

GND

1

AUDIO AMP

Q107 R149

100K

4

GND

4

6

MC33172D

C53

33P

R125

2.7K

HC2

C113

4.7u

MA2S111

LVCC

C52 LOW PASS FILTER

10K

R316

5

LVCC

5

5

IC107B

0.1

1K

C

33P

IC106

D103

R148

XRXD

RXD

R165

0.1

C127

5

MC33172D

C139

4

10K

6

RXD

6

4

R141

5

R317

TXD

MA2S111

IC107A

OUTPUT

+VS

470

7

TXD

7

3

47K

0.1

7

3

8

Q112

6

3

C123

33P

EXTMIC

C124

SVR

GND

1.2

8

EXTMIC 8

2

R135

R136

6

1

RXDATA

5

1

7

2

D305

PTT

100K

-INPUT

MUTE

100K

9

PTT

9

1

+5V

0.01

5

D101

2

8

1

33

R147

C145

C28

+INPUT

GND

C144

R324

MA8056

J1

R133

R134

8

47K

7

R139

2

1

2.2K

1

TXD

C32

47K

3

R137

6

4

0.01

TDA7233D

33P

D310

33P

100K

1

PSW

4

3

100K

100K

D102

R318

2

0.0022

330K

C126

560K

C141

C142

XTXD

MA2S111

R140

Q104

PTT BOARD

IC102A

C128

IC102B

T5V

UMG2

R337

100K

R319

470

C125

4

MC33172D

MC33172D

DTC144EE

CHANNEL SEL SW

C27

0.0033

C122

C121

470

(CHASSIS UNIT)

0.01

MA2S111

100K

D306

0.1

0.1

S1

2 1

C33

33P

W8

MA8056

D313

C129

EC10SP16-51

33P

Q103

DC RESTORATION

R131

C C

MA8056

4.7

+5S

A

A

DTC144EE

2.7

R132

2 1

ERJ3GE-JPW

R320

BWC

M

M

AUX

2.7

8 4 2 1

SN_RX

SN_RX

R169

U

U

FCN

470

J3

SMARTNET TX/RX DATA PROCESSING

Q108

Wideband = Low

6 5 4 3

T

T

D307

GND

AUXB

+5S

MC33172D

R161

I

O

MA8056

AUXB

1

C17

IC114B

33K

47K

R323

MICE

2

6

3

HC4

BANDPASS FILTER

D105

FCNB

TX/RX SW

0.01

C157

4

MICE

7

O

470

GND

DTC144EE

5

R153

C153

R156

C155

R159

5

1

F

D308

C

33K

0.047

22K

0.022

22K

MA2S111

R160

IC309

F

MA8056

52207-0590

IC110

15K

8

8

1

R

W11

R150

R151

R152

R154

R155

R157

R158

FCNB

8

5

3

5

3

QSEL0I

7

2

E

E S

S

T B Q Q Q Q A R

D

BKLED

ERJ3GE-JPW

1

8

Q

DET

7

2

1K

1K

10K

7

3.3K

20K

1

2K

15K

7

8

R162

1

6

3

I

XTXD

E N

5

X S S S S S M M

T

BATLED

6

3

6

2

6

3

D104

2

5

4

XRXD

P _

C

L Y E E E E U U

M

OPTB

SN_TR

5

4

4

1

PTTIN

C T

E L L L L L T T

F

CLR/CODE

IC112B

IC113B

33K

S R

D E 3 2 1 0

E

M

H = Tx

C152

C154

IC112A

C156

2

4

TC7W32FU

KEYS0

MC33172D

D

T

0.01

0.0022

MC33172D

TC4W53FU

0.0068

MA2S111

C158

IC113A

KEYS1

MC33172D

4

1

1

IC114A

0 9 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 7 7 7 7

MC33172D

MC33172D

+5L REGULATOR

T5V

0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6

R331

R251

W7

R P P P P P P P V P P P P P P P P P P P P P P P P

0.047

100K

12K

PSW

C308

E 8 8 8 8 8 8 8 S B B 3 3 3 3 3 3 3 3 B B 1 1 1 1

1

IC401

ERJ3GE-JPW

RESET

R312

2SC4081

R321

S 6 5 4 3 2 1 0 S 0 1 7 6 4 5 3 2 1 0 2 3 0 1 2 3

R250

CONT

VIN

6

100K

O / / /

/ / /

/

/ / /

/ /

/ /

/ /

/ /

/

TXDATA

2

5

220K

I I I

D D D D D D D D D D D D A A A A

GND

GND

10K

3

4

0.1

IC305

R311

C307

Q301

R R R

0 1 1 1 1 1 1 1 9 8 2 3 0 1 2 3

PTTIN

ERJ3GE-JPW

C430 33P

6.8K

N.BYPASS

VOUT

R314

R330

Q Q Q

5 4 2 3 1 0

C301

4

1

VSS

OUT

5 4 3

W6

C431

R252

33P

TK11250BM

C408

3

2

1K

R313

/ / /

PTT_OUT

NC

VDD

100K

10K

C420

C407

0.22

R315

HC3

S R T

D309

BATT

0.1

S-80842ALNP

R310

C X X

PTT_IN

C438

33P

33P

D302

220K

C

4.7

100K

470K

K D D

Q402

2SJ316

MA8039

1 1 1

LVCC

0.001

MA2S111

C439

33P

MA2S111

C405

R403

R404

MA2S111

D403

W10

RESET

1

RES

P14/A4

75

KEYS2

ERJ3GE-JPW

C440

33P

C404LVCC

100K

100K

D402

2

XTAL

P15/A5

74

KEYS3

C406

3

73

OFFRQ

D401

R401

P16/A6

EXTAL

33P

4.7

SW

X2

4

72

C441

33P

18K

C401

FWE

P17/A7

0.1

0.01

MD1

5

71

VCC

MA2S111

33P

18K

MD1

VSS

R322

6

70

C449

33P

R408

R303

C21

C22

MD0

VSS

CR-635

100K

7

69

SW

NMI

PB4/D4

Q401

9.8304MHz

C305

MA2S077

NMI

8

68

DISEN

C448

33P

2SJ316

1K

STBY

PB5/D5

Q403

C403

10K

HR1

D301

R306

L5V

9

VCC

P20/A8

67

DISST

C447

33P

TO

VCC

27P

CSHIFT

10

IC306

P21/A9

66

PT

1

R402

1K

CLOCK

11

KIN15/CIN15/A23

65

W/N

DISPLAY

R

C304

R304

12

KIN14/CIN14/A22

MICROPROCESSOR

P22/A10

64

PLLSK

IC115

C446

2SC4081

C303

C306

SHIFT

SCK0/P52

P23/A11

BOARD

IC402

18P

12K

RXD

13

RXD0/P51

P24/A12

63

PLLSO

5

1

33P

6

VIN

CONT

1

15P

0.1

TXD

14

P25/A13

62

PLLST

2

BSYLED

R248

TXD0/P50

4

CP27

C409

5

2

15

P26/A14

61

TA

3

C411

C410

GND

GND

10K

VSS

C454

4

3

DTMF ENCODER

DTMFSO

16

P27/A15

60

ULOCK

CP26

VOUT

N.BYPASS

WAIT/P97

33P

17

59

SQLC

TC7S04FU

EXCL/P96

VCC

33P

4.7

TK11250BM

DTMFCK

18

58

SPE

PB6/D6

CP25

C18

IOS/AS/P95

+5V REGULATOR

C421

IC303

19

PB7/D7

57

L5V

L5V

0.01

HWR/P94

0.1

1

VSS

8

FCN

20

P47/PWX1

56

NPSPAC

SP

CP24

0.001

SDA

KIN13/CIN13/A21

+5S

2

7

AUX

21

P46/PWX0

55

TMUT

VDD

SCL

KIN12/CIN12/A20

3

6

22

P45/TMRI1

54

T5C

CP23

OSCI

A0

RD/P93

C413

Q406

+5S SW

4

5

OFFREQI

23

P44/TMO1

53

BEEP

3

OSCO TONE

IRQ0/P92

+5L

+5L

4

QSEL0I

24

IRQ1/P91

P43/TMCI1

52

R5C

CP22

C422

C423

PCD3312CT

25

P42/TMRIO/SCK2

51

MSCK

33P

C412

5

2

S5C

X1

ADTRG/IRQ2/LWR

MSO

MSO

4.7

DTC144EE

CP21

DTMF

K K

I

I

4.7

CR-563

0.001

6

1

10K

10K

0.01

K K T K I

I K K K I

R R

RF5C

OFFRQ

3.579MHz

C109

MSCK

MSCK

R309

R308

C19

MUTE

R329

I I M I N N I I I R

K K T R

CP20

N N I N 1 1 N N N Q

I I X X

UMD6

16k x 8 EEPROM

0 1 Y 3 1 0 4 5 6 7

D D N N D D

DISST

CP19

0.01

100K

/ / / / /

/ / /

/

/

A A

9 8 /

/

T5V

R113

R332

Q405

IC304

C C K C C C C C C K

0 1

/ / T R

DISEN

C159

R328

I I I I I

I I I

I

I

/ /

C C X X

CP18

4

3

T5C SW

1

16

N N N N N N N N N N

A A A A A A A A I I D D

C418

CS

VCC

0.01

2

15

R112

47K

0 1 2 3 1 1 4 5 6 7

N N N N N N N N

N N 2 2

100K

KEYS0

CP17

0.001

SO

HOLD

Q101

100K

/ / / / 1 0 / /

/

/ A

0 1 2 3 4 5 6 7

9 8 /

/

5

2

T5C

3

14

NC

NC

F F C F /

/ F F F C V A /

/ / /

/ /

/ /

A /

/ I

T

KEYS1

4

NC

NC

13

10K

R116

T T I T A A T T T I R V P P P P P P P P V A A M M

CP16

+5V

6

1

5

12

C O N I 1 1 I I

O N E C 7 7 7 7 7 7 7 7 S 1 1 C O

NC

NC

HR2

IC306

6

11

I A 2 B 9 8 C D B 7 F C 0 1 2 3 4 5 6 7 S 7 6 I

0

KEYS2

CP15

NC

NC

R

UMD6

7

10

D

E D

2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5

HD6432144FA20

WP

SCK

R5V

8

9

560K

T

X P

6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0

KEYS3

CP14

VSS

SI

Q404

E

M

M M

B

B

M

T O

S T R B K K N M T T L

B R

K K M M

R5C SW

0.1

F

D T

4

3

E

S

X25128

S S

E

E

N X X WE E O M X E 5

A S

E E S S

KEYR0

C207

M

C S

CP13

P

I

O C

E

E

_ D D C Y Y I U P S V

T S

Y Y O I

T

T

C416

C415

5

2

R5C

C

K

P

P

R A A R R S T R T

I I

R R

KEYR1

R333

S

O

X T T

3 2 E E E

N

1 0

CP12

0.001

4.7

6

A A

C

1

RXDATA

R170

KEYR2

CP11

+5S

C55

C54

R406

100K

UMD6

0.01

0.1

KEYR3

47K

CP10

200K

C227

R249

L5V

L5V

TXLED

CP9

C12

C49

C414

S

VOL_IN

33P

R407

0.1

0.22

BATIN

N

MMUTE

BSYLED

CP8

100K

1

10K

_

DTMF

DTMF

C225

T

BWC

+5V

BATLED

R

CP7

+5S

+5S

R241

0.1

C43 TX DATA PROCESSING

+5L

R212

BKLED

C219

CP6

R243

SN/

C433

68K

W12

0.01

3V REGULATOR

1.2M

33P

10K

TX

0.1

0.01

27K

RMUTE

CP5

DIGITAL

C24

33P

ERJ3GE-JPW

DATA

IC206A

0.1

C215

C26

C11

33P

R231

DPOTST

POT (4)

IC210

RX

5 4

IC403

DTMFMT

R254

MICE

CP4

MSO

1

8

SEL

0.0033

IC206B

IC103

5

1

PT

0.01

220K

8

R238

R237

R236

R235

R301

NC

GND

C25

33P

C20

33P

1 1 1

2

7

3

C217

5

AUDIO

TC7S66FU

2

MIC

CP3

AD8403

VIN

C456

1

7

2 1 0 9 8 7 6 5 4 3 2 1

3

6

47K

47K

100K

100K

470K

MUTE

4

NC

VOUT

3

C5

33P

C15

33P

IC209

4

5

2

6

1 2 3

C16

2.2K

S C S D WA B A WA B A

R239

C216

R232

R302

1

CP2

C226

50k

4

C134

S-81230SG

R253

MC33172D

C3

33P

C23

33P

4.7

D S H G 4 4 4 G 2 2 2 G

330K

0.01

27K

Rx Audio

I

D N

N

N

TC4W53FU

R240

C218

100K

COMPANDER

R203

C432

CP1

Q201

N D

D

D

1

C108

J1

4

2

Rx Audio

C224

IC203

10K

MC33172D

0.0022

2.7K

33P

A

A

DTC144EE

1

R210

30

1

0.1

C130

1

R5V

PWR

1

8

+5L

G

G

R206

R142

DET

29

2

TMUT

S C

V N

N

2

7

470K

C444

NOISE

28

3

T5V

D L R D D WA B D WA B

3

6

10K

1 1 1 1 1 1 1

2.7K

C14

RSSI

27

4

LTR

O K S D 3 3 3 3 1 1 1 1

4

5

L = TEST

TEST

R208

6 5 4 3 2 1 0 9

R143

R166

C46

33P

W/N

26

5

MOD

1 1 1 1 1 1 1 2 2 2 2 2

FILTER

+5V

V E E N E E I I

1

33P

PLLST

25

TO

6

+5V

3 4 5 6 7 8 9 0 1 2 3 4

TC4W53FU BYPASS

C48

TX AUDIO PROCESSING

C229

56K

18K

5.6K

C O I C M F O I

8 7 6 5

C443

33P

PLLSO

24

RF

7

TA

C45

MSCK

0.1

R207

C204

C

2 2

R338

C222

PLLSK

23

8

ULOCK

SPLATTER FILTER

C44

33P

R201

R202

RF5C

22

UNIT

9

R244

33K

1

IC208

22K

1

C450

33P

R213

C13

0.1

0.0047

0.1

0.0033

39K

39K

SQLC

21

10

10K

G

I

I

VCC

20

11

C213

LIMITER

1M

HIGHPASS FILTER

0.0047

N C C C C O I P

C451

33P

19

12

33P

82K

C210

R205

D O I

M F 1 1 T

1 2 3 4

C206

C228

C202

1 2 3 4 5 6 7 8

18

13

R223

8

C209

5

ERJ3GE-JPW

8

0.1

0.1

C437

33P

C8

R224

R222

3

R221

R220

R214

7

3

220K

C2

C7

C6

C10

17

14

R226

R225

C214

5

R211

C205

W5

0.0047

33P

COMBINER

7

1

6

1

IC204

C436

33P

16

15

150K

68K

3.3K

39K

1

1K

C203

C201

R246

10K

33P

33P

33P

33P

C4

R228

6

2

2

TC4W66FU

33P

5.6K

1

C208

C211

R216

R215

IC202B

5.6K

C435

33P

IC202A

1.8K

R245

MIC/DTMF MUTE

4

0.0047

4

0.0047

BATT

AXK5S30245P

C212

0.047

560P

470K

820

NJM2904V

C223

R339

4.7K

IC205B

R204

R247

100

C434

33P

5

56P

IC205A

1

33K

C1

C30

1

NJM2904V

47K

1K

4

NJM2904V

33P

0.1

J4

3

TX_OUT

NJM2904V

MC33111D

C9

TX_IN

1

20

PTT_OUT

2

R227

2

19

RX_IN

33P

IC201

10K

C31

3

18

PTT_IN

TC75S54F

CLR/CODE

4

17

RX_OUT

0.1

T5C

5

16

EXTDC

CP201

OP1

6

OPTION 15

OPTB

CP202

OP2

7

14

AMUTO

CP203

OP3

8

13

BEEPO

CP204

OP4

9

12

AMUTI

10

11

SW_BATT

AXK520145P

TX_OUT

TX_IN

8-7	November 1999
	Part No. 001-7780-500

LOGIC BOARD SCHEMATIC