Grundig CD 21, Service Manual

CD 21 / CD 22

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs

CD 21 / CD 22

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs

GRUNDIG Service

GRUNDIG Service

2 - 5

2 - 6

MAINS V

O

LT

A

G

E

MC79L15

+VKK

-VKK

-

-

-

-

-

-

-

-

MC7805CT

-

-

-

-

-

-

-

-

-

VFTD

4

5

6

1

7

8

9

2

3

D

C

G

B

A

F

E

D

C

G

B

A

F

E

4

5

6

1

7

8

9

2

3

1510

T1A

1511

T1A

22n

2534

22n

2533

100n

2535

22n

2537

22n

2539

100n

2541

820R

3541

2K7

3542

22k

3544

4k7

3543

1k

3560

4k7

3563

4k7

3562

47k

3540

4R7

3545

1R

3565

1R

3564

KILLI

DISEN

KILL

+5

+5

+5

+10

-10

1N4148

6544

1N4002

6543

1N4148

6542

1N4002

6540

1N4002

6535

1N4002

6537

1N4002

6538

1N4002

6536

1N4002

6561

1N4002

6560

1

2

3

4

1507

1507

1507

1507

1076

1

1076

2

1076

3

1506

6

1506

5

1506

4

1506

2

1506

3

1506

1

1530

2542

1000u/10V

2536

3300u/16V

2538

2200u/16V

2540

220u/50V

2560

330u/16V

7541

BC548B

BC338

7542

7543

BC558B

7650

BC558B

6541

6V8

6562

3V9

7535

3

2

1

7540

3

1

2

1508

1508

1508

1508

4

3

2

1

5.6V~

26.5V~

10.2V~

10.2V~

0V

-33V

-6.8V

-15.5V

-16V

-22V

-20V

-17V

+10V

+5V

-10V

13V

3.9V

-

-

-10

HPR

GND

HPL

+10

-

-

-

-

-

(B)

(A)

NJM4556

NJM4556

10k

10k

1

2

3

A

D

C

B

A

D

C

B

1

2

3

1005

1

1005

2

1006

1

1006

2

1006

3

1006

4

1006

5

1371

R

L

22n

2373

1n

2372

1n

2371

22n

2370

120R

3386

120R

3375

15k

3373

10k

3377

10k

3372

15k

3374

3376

3376

7370

1

3

2

7

5

6

8

4

7370

0V

0V

0V

0V

0V

0V

7370

1371

2370

2

371

3375

3386

2372

3373

3377

9306

100

6

2373

9305

3376

3372

3374

1005

1

3

6

GN

D

L

R

1510

1507

1530

3564

1511

3565

3

6

1

Stromversorgung und Schalterplatte / Power Supply and Switch Board

Schalter-Platte / Switch Board

Kopfhörer-Platte / Headphone Board
nur CD 22 / only CD 22

Bauteil

X

Y

Component

1076

A

9

1076

C

9

1076

B

9

1506

E

2

1506

E

1

1506

D

2

1506

C

2

1506

B

2

1506

A

2

1507

F

1

1507

F

2

1507

F

2

1507

F

3

1508

E

1

1508

E

2

1508

E

2

1508

E

3

1510

F

2

1511

F

2

1530

G

2

2533

E

6

2534

D

6

2535

E

8

2536

E

7

2537

D

5

2538

F

5

2539

E

5

2540

D

2

2541

D

4

2542

A

4

2560

F

3

3540

B

3

3541

C

5

3542

C

6

3543

C

7

3544

B

8

3545

A

5

3560

F

4

3562

F

5

3563

G

5

3564

F

1

3565

F

3

6535

D

5

6536

D

6

6537

E

6

6538

E

5

6540

C

2

6541

D

3

6542

B

4

6543

A

2

6544

C

4

6560

E

3

6561

E

4

6562

F

4

7535

D

7

7540

C

3

7541

A

5

7542

A

5

7543

B

7

7650

F

4

Bauteil

X

Y

Component

1005

C

3

1005

D

3

1006

B

1

1006

C

1

1006

C

1

1006

B

1

1006

A

1

1371

B

3

2370

A

1

2371

B

2

2372

C

3

2373

D

3

3372

C

2

3373

B

2

3374

C

2

3375

B

3

3376

B

1

3376

C

1

3377

B

2

3386

C

3

7370

A

2

7370

D

2

Abkürzungen / Abbreviations

BCK

Bit clock input of CC-DAC TDA1545

CFLG

correction flag output

CL

interface clock input line

CL11

11.2896MHz clock line

CL16

16.9344MHz system clock output

CLA

4.2336MHz microprocessor clock output

CLO

clock output

CRIN

crystal/resonator input

CROUT

crystal/resonator output

D1-D4

Central diode input of TDA1301

D1-D5

Photodiode signals from CDM-12

DA

interface data I/O line

DACCL

Bit clock output of CD6 decoder SAA7345

DACDA

Data output of CD6 decoder SAA7345

DACWS

Word select output of CD6 decoder SAA7345

DATA

serial data output / Data input of CC-DAC TDA1545

DOBM

biphase mark output

FO

Focus actuator output

FOC+

+Connection of focus actuator

FOC-

Ground connection of focus actuator

HF

High frequency signal of decoder input

HFIN

comparator signal input

HFREF

comparator common-mode input

IOL

Left channel current output

IOR

Right channel current output

IREF

Reference current output

ISLICE

current feedback from data slicer

LDON

Laser drive on

MISC

general purpose DAC output

MOTO1

motor output 1

MOTO2

motor output 2

NRST

Reset input

OTD

Off track detector

PORE

Power-On reset enable  input (active low)

R1-R2

Satallite diode signal input

RA

Radial actuator output

RAB

interface R/W and acknowledge input

RAD+

+Connection of radial actuator

RAD-

Ground connection of radial actuator

SCLK

serial bit clock output

SICL

Serial interface clock

SIDA

Serial interface data

SILD

Serial interface load

SL OUT

+Connection of sledge motor

SL

Sledge output

TEST1

test input

TEST2

test input

TS1-TS2

Test inputs

V1-5

Versatile input pins

WCLK

Word clock output

WS

Word select input of CC-DAC TDA1545

XTLI

Oscillator input

XTLO

Oscillator output

XTLR

Oscillator reference