E.F. Johnson Company 7780 Series, Preliminary Service Manual

November 1999

Part No. 001-7780-500

TX_IN

TX_OUT

SW_BATT

39K

R202

39K

R201

TC4W66FU

IC204

5

8 7 6

4

3

2

1

0.1

C206

0.1

C228

33P

C450

33P

C443

33P

C435

33P

C436

33P

C434

33P

C437

33P

C451

5.6K

R166

18K

R143

100

R245

1

C204

MC33111D

IC208

6

1

C

C

V

5

1

O

E

4

1

I

E

3

1

C

N

2

1

M

E

1

1

F

E

0

1

2

O

I

9

2

I

I

8

T

P

7

1

I

I

6

1

O

I

5

F

C

4

M

C

3

I

C

2

O

C

1

D

N

G

1.8K

R246

33K

R207

33K

R339

22K

R338

1

C222

1

C223

1K

R247

0.0047

C201

0.0047
C202

220K

R205

47K

R204

0.0047

C203

33P

C229

1M

R213

5.6K

R211

56K

R208

1K

R214

NJM2904V

IC202A

8

4

1

2

3

ERJ3GE-JPW

W5

0.0047

C205

TX_IN

TX_OUT

NJM2904V

IC202B

7

6

5

0.1

C48

820

R215

0.0033

C210

3.3K

R222

39K

R220

470K

R216

+5V

TEST

56P

C212

0.0047
C213

0.047

C208

560P

C211

150K

R224

68K

R223

82K
R221

1

C209

NJM2904V

IC205A

8

4

1

2

3

0.1

C44

10K

R227

10K

R226

4.7K

R228

5.6K

R225

TC75S54F

IC201

5

4

2

3

1

0.1

C45

MSCK

1

C214

33P

C9

10K

R244

NJM2904V

IC205B

7

6

5

SQLC

TA

33P

C10

33P

C8

33P

C4

33P

C2

33P

C1

AXK520145P

J4

20
19
18
17
16
15
14
13
12
11

10

9

8

7

6

5

4

3

2

1

OP4

CP204

OP3

CP203

OP1

CP201

OP2

CP202

0.1

C31

0.1

C30

BEEPO

AMUTO

AMUTI

RF5C

EXTDC
OPTB

RX_IN

RX_OUT

PTT_IN

PTT_OUT

T5C

CLR/CODE

33P

C13

33P

C14

BATT

33P

C7

33P

C6

VCC

+5V

MOD

LTR

W/N

RSSI

ULOCK

PLLST

PLLSK

PLLSO

100K

R407

200K

R406

AXK5S30245P

J1

30
29
28
27
26
25
24
23
22
21
20
19
18
17
16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0.22

C414

33P

C12

33P

C20

33P

C11

33P

C25

33P

C23

33P

C15

33P

C3

33P

C5

33P

C24

T5V

PWR

NOISE

0.1

C49

TMUT

DET

R5V

BATIN

0.1

C225

ERJ3GE-JPW

W12

68K

R241

TC4W53FU

IC210

8
7
6
5

4

3

2

1

4.7

C226

1

C227

10K

R249

50k

AD8403
IC209

4

2

1

B

3

2

1

A

2

2

1

W

1

2

1

D

N

G

A

0

2

3

B

9

1

3

A

8

1

3

W

7

1

3

D

N

G

A

6

1

D

D

V

5

1

S

R

4

1

K

L

C

3

1

O

D

S

2

1

I

D

S

1

1

S

C

0

1

N

D

H

S

9

D

N

G

D

8

4

W

7

4

A

6

4

B

5

4

D

N

G

A

4

2

W

3

2

A

2

2

B

1

2

D

N

G

A

MSO

+5S

10K

R243

DPOTST

R5C

TC4W53FU

IC203

8
7
6
5

4

3

2

1

MC33172D

IC206B

7

6

5

10K

R240

0.0022

C218

330K

R239

+5L

VOL_IN

47K

R238

MC33172D

IC206A

8

4

1

2

3

DTC144EE

Q201

R

T

_

N

S

+5S

BWC

DTMF

L5V

47K

R237

0.1

C43

0.0033

C217

0.1

C219

47K

R170

27K

R232

1

C134

TC7S66FU

IC103

4

5

3

2

1

100K

R236

0.01

C26

RXDATA

100K

R302

470K

R301

100K

R235

0.01

C216

0.01
C215

27K
R231

0.1

C108

+5V

10K

R142

S-81230SG

IC403

5

NC

4

NC

3

VOUT

2

VIN

1

GND

470K

R210

1

C130

+5L

1

C456

DTMFMT
PT

+5S

L5V

DTMF

MMUTE

RMUTE

100K

R333

1

C224

220K

R254

1.2M

R212

2.2K
R253

1

C46

2.7K

R206

0.01

C16

33P

C444

33P

C433

2.7K

R203

33P

C432

CP11

CP10

CP9

CP8

CP7

CP6

CP5

CP4

CP3

CP2

CP1

MIC

MICE

BKLED

BATLED

BSYLED

TXLED

KEYR3

KEYR2

KEYR1

BSYLED

+5L

+5L

MSCK

MSO

L5V

MSO

MSCK

CP26

CP25

CP24

CP23

CP22

CP21

CP20

CP19

CP18

CP17

CP16

CP15

CP14

CP13

CP12

SPE

SP

KEYR0

KEYS3

KEYS2

KEYS1

KEYS0

DISEN

DISST

NPSPAC

SQLC

TA

100K

R332

MSCK

I

S

M

L5V

R5C

BEEP

T5C

TMUT

ULOCK

PLLST

X

R

_

N

S

C

D

T

X

E

O

S

M

0.01

C55

0.1

C54

C

E

R

P

X

T

I

S

S

R

V

5

L

N

I

T

A

B

E

T

U

M

M

E

S

I

O

N

C

W

B

A

T

A

D

X

R

A

T

A

D

X

T

T

S

E

T

0

R

Y

E

K

1

R

Y

E

K

2

R

Y

E

K

3

R

Y

E

K

T

S

T

O

P

D

10K

R112

560K

R116

R

HR2

47K

R113

0.01

C159

0.1
C207

0.01

C109

100K

R328

100K

R329

O

P

E

E

B

DTC144EE

Q101

OFFREQI
QSEL0I

DTMFCK

FCN
AUX

0.01
C19

O

S

M

K

C

S

M

T

M

F

M

T

D

P

E

E

B

DTMFSO

TXD

OFFRQ

3.579MHz

CR-563

X1

S

C

P

E

E

10K
R308

10K
R309

X25128

IC304

16

VCC

15

HOLD

14

NC

13

NC

12

NC

11

NC

10

SCK

9

SI

8

VSS

7

WP

6

NC

5

NC

4

NC

3

NC

2

SO

1

CS

I

S

M

0.1

C421

T5C

S5C

PCD3312CT

IC303

8

SDA

7

SCL

6

A0

5

TONE

4

OSCO

3

OSCI

2

VDD

1

VSS

0.01

C18

+5V

RF5C

0.001

C422

0.001

C416

R5V

T5V

+5S

4.7

C412

UMD6

Q406

1

2

3

4

5

6

UMD6

Q405

1

2

3

4

5

6

UMD6

Q404

1

2

3

4

5

6

4.7

C423

4.7

C415

0.001

C418

33P

C413

0.001

C410

33P

C411

4.7

C409

6.8K

R250

10K

R252

12K

R251

BATT

2SJ316

Q403

VCC

TXDATA

LVCC

0.1

C420

33P

C406

0.001

C405

4.7

C404

100K

R403

MA2S111

D401

TK11250BM

IC402

3

N.BYPASS

6

VIN

5

GND

4

VOUT

2

GND

1

CONT

TK11250BM

IC401

3

N.BYPASS

6

VIN

5

GND

4

VOUT

2

GND

1

CONT

2SJ316

Q402

1K

R408

2SC4081

Q401

MA2S111
D402

18K

R401

MA8039

D403

ERJ3GE-JPW

W7

R

HR1

15P

C303

18P

C304

9.8304MHz

CR-635

X2

ERJ3GE-JPW

W10

10K

R402

T5V

PSW

S-80842ALNP

IC305

4

VSS

3

NC

2

VDD

1

OUT

0.1
C301

33P

C401

1

C403

100K

R404

100K

R310

33P

C408

4.7

C407

0.01

C22

0.1

C21

18K
R303

27P

C305

MA2S077
D301

1K

R306

0.1

C306

12K

R304

10K

R312

C

HC3

2SC4081

Q301

100K

R330

CSHIFT

10K

R248

MD1

NMI

100K

R322

L5V

0.22

C307

1K

R311

100K

R321

MA2S111

D302

220K
R314

220K

R315

470K

R313

RESET

RXD

HD6432144FA20

IC306

9

9

1

K

C

S

/

5

Q

R

I

/

6

8

P

8

9

1

D

X

R

/

4

Q

R

I

/

5

8

P

7

9

1

D

X

T

/

3

Q

R

I

/

4

8

P

6

9

3

8

P

5

9

2

8

P

3

9

0

8

P

4

9

1

8

P

2

9

S

S

V

1

9

0

D

/

0

B

P

0

9

1

D

/

1

B

P

9

8

5

1

D

/

7

3

P

8

8

4

1

D

/

6

3

P

6

8

3

1

D

/

5

3

P

7

8

2

1

D

/

4

3

P

5

8

1

1

D

/

3

3

P

4

8

0

1

D

/

2

3

P

3

8

9

D

/

1

3

P

2

8

8

D

/

0

3

P

1

8

2

D

/

2

B

P

0

8

3

D

/

3

B

P

9

7

0

A

/

0

1

P

74

P15/A5

73

P16/A6

72

P17/A7

71

VSS

70

VSS

69

PB4/D4

68

PB5/D5

67

P20/A8

66

P21/A9

65

P22/A10

64

P23/A11

63

P24/A12

62

P25/A13

61

P26/A14

60

P27/A15

59

VCC

58

PB6/D6

57

PB7/D7

56

P47/PWX1

55

P46/PWX0

54

P45/TMRI1

53

P44/TMO1

52

P43/TMCI1

51

P42/TMRIO/SCK2

0

5

0

O

M

T

/

2

D

X

R

/

D

X

R

R

I

9

4

I

C

M

I

/

2

D

X

T

/

D

X

T

R

I

8

4

6

1

A

/

8

N

I

C

/

8

N

I

K

7

4

7

1

A

/

9

N

I

C

/

9

N

I

K

6

4

S

S

V

A

5

4

7

7

P

/

7

N

A

/

1

A

D

4

4

6

7

P

/

6

N

A

/

0

A

D

3

4

5

7

P

/

5

N

A

2

4

4

7

P

/

4

N

A

1

4

3

7

P

/

3

N

A

0

4

2

7

P

/

2

N

A

9

3

1

7

P

/

1

N

A

8

3

0

7

P

/

0

N

A

7

3

C

C

V

A

6

3

F

E

R

V

A

5

3

7

N

I

C

/

7

N

I

K

/

7

Q

R

I

4

3

B

O

T

F

/

6

N

I

C

/

6

N

I

K

3

3

D

I

T

F

/

5

N

I

C

/

5

N

I

K

2

3

C

I

T

F

/

4

N

I

C

/

4

N

I

K

1

3

8

1

A

/

0

1

N

I

C

/

0

1

N

I

K

0

3

9

1

A

/

1

1

N

I

C

/

1

1

N

I

K

9

2

B

I

T

F

/

3

N

I

C

/

3

N

I

K

8

2

2

N

I

C

/

2

N

I

K

/

Y

I

M

T

7

2

A

O

T

F

/

1

N

I

C

/

1

N

I

K

6

2

I

C

T

F

/

0

N

I

C

/

0

N

I

K

25

ADTRG/IRQ2/LWR

24

IRQ1/P91

23

IRQ0/P92

22

RD/P93

21

KIN12/CIN12/A20

20

KIN13/CIN13/A21

19

HWR/P94

18

IOS/AS/P95

17

EXCL/P96

16

WAIT/P97

15

VSS

14

TXD0/P50

13

RXD0/P51

12

SCK0/P52

11

KIN14/CIN14/A22

10

KIN15/CIN15/A23

9

VCC

8

STBY

7

NMI

6

MD0

5

MD1

4

FWE

3

EXTAL

2

XTAL

8

7

1

A

/

1

1

P

75

P14/A4

7

7

2

A

/

2

1

P

6

7

3

A

/

3

1

P

0

0

1

O

S

E

R

1

RES

OFFRQ

0.047
C308

TC7S04FU

IC115

4

5

3

2

1

100K

R331

ERJ3GE-JPW

W6

PTTIN

PTT_IN

PTT_OUT

W/N

PT

PLLSO

PLLSK

DISST

DISEN

KEYS3

KEYS2

KEYS1

MA2S111

D309

33P

C447

33P

C448

33P

C449

33P

C446

CP27

33P

C431

33P

C454

33P

C438

33P

C439

33P

C440

33P

C441

33P

C430

FCNB

MICE

AUXB

PTT

EXTMIC

ERJ3GE-JPW

W11

33P

C28

TXD

MA8056

D313

470

R337

MA2S111

D310

33P

C27

33P

C33

33P

C32

EXTMIC
PTT

FCNB

AUXB
MICE

GND

GND

470

R323

470

R320

470

R318

52207-0590

J3

5

4

3

2

1

TXD

XTXD

2.2K

R147

1

C145

100K

R319

ERJ3GE-JPW

W8

O

T

U

M

A

I

T

U

M

A

100K

R324

100K

R317

MA8056

D307

MA8056

D308

FCN

AUX

MA8056

D306

MA8056

D305

KEYS0

47K

R169

2.7

R131

0.01

C142

2.7

R132

0.1

C121

1

C141

EC10SP16-51

S1

6

8

5

4

4

2

3

1

2

2

C

1

1

C

I

Q

E

R

F

F

O

TC7W32FU

IC309

8
7
6
5

4

3

2

1

R

T

_

N

S

BATLED

OPTB

CLR/CODE

T

U

M

A

E

T

U

M

R

T

M

F

M

T

D

C

5

S

PTTIN

S

C

P

E

E

33P

C144

0

L

E

S

Q

1

L

E

S

Q

2

L

E

S

Q

3

L

E

S

Q

D

E

L

X

T

D

E

L

Y

S

B

BKLED

XTXD

XRXD

33

C123

0.1

C122

UMG2

Q112

4

5

1

2

3

MC33172D
IC107A

8

4

1

2

3

SN_RX

BWC

+5S

T5V

RXDATA

PSW

DTC144EE

Q108

DTC144EE

Q104

MC33172D

IC114A

8

4

1

2

3

1

C158

MC33172D

IC113A

8

4

1

2

3

QSEL0I

33K

R162

33K

R161

1

C157

MA2S111

D104

15K

R160

MA2S111

D105

MC33172D

IC114B

7

6

5

22K

R159

22K

R156

0.0033

C126

MC33172D

IC113B

7

6

5

MC33172D

IC112B

7

6

5

0.0068

C156

0.022

C155

0.0022

C154

0.047

C153

15K

R158

2K

R157

20K

R155

3.3K

R154

MA2S111

D102

MC33172D

IC112A

8

4

1

2

3

MA2S111

D101

100K

R140

560K

R139

330K

R137

DTC144EE

Q103

100K

R141

MC33172D

IC102B

7

6

5

4.7

C129

0.0022

C128

33K

R153

+5V

MC33172D

IC102A

8

4

1

2

3

C

HC4

0.01

C17

TC4W53FU

IC110

8

7

6

5

4

3

2

1

DET

SN_RX

SN_TR

+5S

0.01

C152

10K

R152

1K

R151

1K

R150

0.01

C124

47K

R136

100K

R133

47K

R135

0.01

C125

100K

R134

100K

R102

56K

R167

DTC144EE

Q111

NPSPAC

150K

R101

47K

R165

UMG2

Q110

4

5

1

2

3

W/N

0.01
C101

+5S

BATT
LVCC
R5V

RX_IN

RX_OUT

ERJ3GE-JPW

W4

0.1

C52

470P

C102

0.001

C103

150K

R110

560K

R108

5.6K
R109

0.01
C105

0.039

C104

390K

R106

0.1

C51

MC33172D

IC101A

8

4

1

2

3

0.1

C127

0.01

C106

0.1

C53

120K

R105

MC33172D

IC107B

7

6

5

100K

R111

1

C107

27K

R107

47K

R104

47K

R103

2.7K

R168

10K

RV-283

R117

1K

R125

0.1

C136

2.2K

R163

C

HC2

C

HC1

MC33172D

IC101B

7

6

5

33P

C113

33P

C419

1.2

R148

100K

R164

DTC144EE

Q109

4.7

C111

2.7

R127

10K

R145

MA2S111

D103

2SB798
Q106

4.7

C138

1

C139

1

C137

4.7u

C140

TDA7233D

IC104

8

+INPUT

7

-INPUT

6

SVR

5

OUTPUT

4

+VS

3

GND

2

MUTE

1

GND

TDA7233D

IC105

8

+INPUT

7

-INPUT

6

SVR

5

OUTPUT

4

+VS

3

GND

2

MUTE

1

GND

TDA7233D

IC106

8

+INPUT

7

-INPUT

6

SVR

5

OUTPUT

4

+VS

3

GND

2

MUTE

1

GND

0.1

C118

RXD

XRXD

1

C143

2SA1576
Q102

1

C115

0.047

C116

100K
R146

DTC144EE

Q105

MA8056

D311

6.8K
R119

6.8K
R118

10K

R149

2SC4081

Q107

L5V

PSW

0.047

C110

100K

R326

100K

R325

AFO

LVCC

BATT

MD1

10K

R124

RESET

100K

R120

F1

J1

1
2
3
4
5
6
7
8
9

TXD

RXD

LVCC

GND

PSW

RESET

AFO

Z

HD1

470

R316

470

R335

DTC144EE

Q302

MA8160

D312

1K
R336

RXD

PSW

52396-0990

J2

9

8

7

6

5

4

3

2

1

RESET

LVCC

GND

AFO

33P

C402

33P

C29

JACK BOARD

PTT BOARD

33P

C36

(CHASSIS UNIT)

(CHASSIS UNIT)

UNIT

CHASSIS

BANDPASS FILTER (300-3000 Hz)

On-Off/
Volume

Switch

LEVEL ADJ

RECEIVE AUDIO PROCESSING

RECEIVE DATA PROCESSING

LOW PASS FILTER

DC RESTORATION

Wideband = Low

AUDIO AMP

AUDIO AMP

AUDIO AMP

CHANNEL SEL SW

SUPPLY SWITCHING

AMP SELECT

IC306

MICROPROCESSOR

RESET

CLOCK

SHIFT

DTMF ENCODER

+5L REGULATOR

LVCC

SW

VCC

SW

+5V REGULATOR

+5S SW

T5C SW

R5C SW

16k x 8 EEPROM

DTMF
MUTE

TO

DISPLAY

BOARD

MIC/DTMF MUTE

COMPANDER

3V REGULATOR

RX

AUDIO

MUTE

Rx Audio

Rx Audio

TX AUDIO PROCESSING

TX DATA PROCESSING

HIGHPASS FILTER

LIMITER

SPLATTER FILTER

DIGITAL

POT (4)

SN/

TX

DATA

SEL

FILTER

BYPASS

L = TEST

TO
RF

UNIT

OPTION

COMBINER

H = Tx

SMARTNET TX/RX DATA PROCESSING

DC RESTORATION

TX/RX SW

BANDPASS FILTER

TO

BATTERY

9
8
7
6
5
4
3
2
1

Top on

Radio

LOGIC BOARD SCHEMATIC

8-7