GRUNDIG CUC 400 chassis SERVICE MANUAL

Layout of the PCBs and Circuit Diagrams CUC 400

4

R
3

C

C
1

General Circuit Diagram

+12V

R140

47u25V

C104

27p

C105
27p K

C106
470n

C101

TFMS5300

K

Q101
8MHz

F

2
IC101

1

R101
270

3

26

31

32

42

LED1

RED

1K

R107

220

+5V

R103

R102

10K

22K

35 17 7 8 10

R106
10K

C107

100p

C108

100p

R105
10K

K

K

IC102

3034 18 91119 20 37 21

SW4

VOL+

SW5

VOL-

SW2

PRO+

SW3

PRO-

C109

100p

R104
10K

OPTION FOR TELETEXT

+5V

C405
10u25V

EEPROM

+5V

DIODES
OPTION

OPTION

3

IC104

24C04

56

K

C102
100n

8

1
2
4
7

C402
F

22

21

10n

11

4

3

17 16

R413
100

R403

100

R407

1K

15

R4051KR406

IC401

TELETEXT

STV5346/5348

5

6

R404

12K

12K

R411
5K6

28

D106
1N4148

R135
1K8

C112
100p

K

R115

4K7

R1121KR113

R116

4K7

R117

4K7

2223242527263316

R118

4K7

R114

1K

1K

CT101

28

K

8p2

L101

56uH

C113

29

K

15p

39

27

D105
1N4148

D104
1N4148

D103

13 14

1N4148

D102
1N4148

D101
1N4148

K

+5V

R402

4K7

R109

D107

1N4148

R110
68K

100p

1K

K

GHK3

R133

2K2

R108
100K

R401

4K7

F

C110
100n

40 4115

ST6377

1234536386

R124

R127
4K7

4K7

R414
5K6

2726252019187213

18910 12 1

R408

R409
5K6

K

3K3

C401
100n

12345678910 12 11

CNR3

R119

1K5

C114

K C115

100p

CNR7

C902

0.1u250V AC

F

COIL

CNR8
90V TO
260V AC

SW1-2

SW1-1

CIRCUIT NOT MAINS-ISOLATED

DIODE OPTION

REF

WITH DIODES WITHOUT DIODES

WITH LOGO WITHOUT LOGO

D101

AV2V1,A AV

D102

MULTI SOUND IF 5.5MHz SOUND IF

D103
D104
D105
D106

TINT NO TINT

HYPERBAND NO HYPERBAND

POWER ON START POWER ON STANDBY

CRT SOCKET

CNR5

CRT SOCKET 22.5mm

DOUBLE PTC

SINGLE PTC

14" ONLY

FS901

T3.15AL

0.15u250V AC

NORM ASSIGNMENT

STANDARD

1
2
3
4

PCT901

F

C901

B/G
D/K

2X49mH

I
M

L901

D108

1N4148

U-NORM
AB

11
1100

00

R120

10n

10K

FS902

C904

1n

400V AC

K

K

K

C905

400VAC

K

1n

NTC901

4.7

IMPORTANT CIRCUIT SYMBOLS

1/8W

1/4W

1/2W

1W

2W

7W

R123

10K

F

R122
100K

C116

10u50V

T2AL

C903 220u400V

C906

1n1KV

C907

D901-D904

1n1KV

PC2010RX4

WIRE WOUND

FUSIBLE

FLAME RESISTANT

ELECTROLYTC

K

CERAMIC

F

FOIL

K

1n1KV

C909

1n1KV

C908

R903

33K

K

47u50V

R125

R128

4K7

IC901

TDA4605-3

1

470

R904
680K

R131

5K5

R137

R132

33K

18K

R130

18K

c.a. 320V

R905

270K

C913

F

2

2n5

23

8

C918

15n

R909

5K6

0--5V

2--4V

1--4V

2--4V

3--4V

K

D905

BYT53A

R915

R914

5

47

R913

1

4K7

D908

6

BYT53B

4

VR901

2K

1

TINT KBCOL2
2 COLOUR
3

BRIGHTNESS
4

CONTRAST
5

VOLUME

___

6

AV1/AV2
7

KBROW0
8

KBROW1
9

AFC IN

10

KBROW2

11

TV STATUS

12

N.C.

13

KBCOL0

14

KBCOL1

56K

R126

18K

R901

4M7

R906

12K

7
C911
100n

F

4

C910

R907

R908

220

APPROX. V ALUES PIN ASSIGNMENT

R136

100K

10

R134
12K

C919
470p2KV

R910

10K

1u63V

3

TR901
BUZ90A

C916

33n630V

R912

10

D909

BYT53B

C914

F

D907

BYT54M

C915

470p2KV

PPN

R911

15
16
17
18
19
20
21
22
23
24
25
26
27
28

R138
47K

A

LBV288/1

R916

15K

R917
15K

D906
BYT54M

L903

F

F. BEAD

L904

F.BEAD

56

F

C917

3n9

KBCOL3
KBCOL4
VHF LOW
VHF HIGH
UHF
GROUND (VSS)
RED-OUT
GREEN-OUT
BLUE-OUT
BLANKING
H-SYNC
V-SYNC
OSD OSC-IN

R162
2K2

B

T901

4

1

9

6

K

29
30 TEST (GND)
31
32
33
34
35
36
37
38
39
40
4142SCL

R163
2K2

SYSTEM
/5;/6;/8

ONLY

L905

18

F.BEAD

15

FS903

T2AL

12

C932
2n2 400V AC

OSD OSC-OUT

OSC-IN
OSC-OUT

_____
RESET

VS TUNING
REMOTE IN

__
AV/TV

POWER ON/OFF
SOUND IF SELECT
SOUND IF SELECT
SDA

5V (VDD)

5

470u25V

C920

100p1KV

D910

BYW178

C922

100p1KV

D911

BYW172D

C923

1u100V

K

K

C929

100u250V

C924
220n

C921

3

1

R918
3K4 1%

VI

IC902
LM317

IC903
L7805CV

VI

C925

2n2

1

VO

A
D
J

VO

G
N
D

2

3 - 2 GRUNDIG Service

CUC 400 Layout of the PCBs and Circuit Diagrams

R
3

9

R205

33K

C205

100p

19202-185

R203
390

2345 46

3

F

C239
220n

16

14 3

K

L203

R204

6K8

DEEM
PHAS.

IDENT

34

K

SYSTEM

/4;/6;/8
ONLY

+12V

IC103

4053BP

AFC

Q201

3.58MHz
C224

18p
(NPO)

S

W

I

T
C
H

6

7682

515 4

+12V

+12V

TR105

BC548B

R173

+8V

R206
27K

C206

C207

1n

100n

K

R241

4.7

C241
100n

9

10

15

7K5

R171
1K

R177

R207
47K

470

K

C225
100n

12

1

13

R172
22K

C209
100n

C240
100n

K

C128

4.7u25V

C130

1u100V

+8V

R213

560

R214

560

K

R217

150

R209

TR106
BC548B

R174

1K2

R176
4K7

TR107
BC548B

R178
470

R208

1

C208

470u10V

K

VIDEO
IDENT

PAL/NTSC-DECODER

F

C226
100n

R242

4.7

K

C242

K

16

1n

C243

K

14

1n

K

470

K

C248
47p

1

9

5

BC548B

TR108
BC558B

R167

5K6

C129
470p

R168

47

R169

TR203

BC558B

R220

680

TR201

C249
330p

C124

10u50V

R175
220

C125
2n2

K

R179

75

C210

F

100n

F

C227

4n7

+5V

IC202

TDA4665

LINESTORE

LINESTORE

PLL

75

R215

470

R216
360

R244
10K

K

AUDIO
OUT

+12V

C126
100n

VIDEO
OUT

7

33 35

R234
100K

F

F

C228
100n

AUDIO IN

VIDEO IN

SYSTEM

/8

ONLY

R210

R211

1K2

1N4148

+8V

R218

22K

6

K

3
4
8
10

11

12

82

D201

4.43MHz
C229

18p
(NPO)

L202

07202-405

23

1

TPS 5.5MHz

TR202

BC558B

K

C211

47p

R212
4K7

SYSTEM
/8 ONLY

D202

1N4148

AB

TER

R219
47K

TR204
BC548B

2829 30 31 273212 5211 41

Q202

10
11

C245

K
100n
C244

K
100n

89

F202

SYST.

L202
15mH

/4/5/6
ONLY

TER

+12V

D502

2.7V
TR501

BC558B

R510

R511

1K

1K

TR502
BC337

SFE 4.5MHz

SFE 6.0MHz

SFE 6.5MHz

SFE 5.5MHz

IC204*

4052BP

3

13 10916876

F203*

SFE 5.5MHz

SYSTEM
/4 ONLY

K

K

C213

C212
100n

100p

K

C216
100n

R222

750

7

C215

10u50V

51

6836 10 4 169

51315

AMPLI.SEPARATOR

K

1u100V

+8V

12

28

24

23

13.875MHz

114

R412

12

A
D
J

G
N
D

CNR3

1

2

K

C401
100n

C925

2n2

VO

100K

TR401
BC558

R410

3K3

C118
220n

C141 100p

K

R141

10K

R156

6K8

R155

6K8

R154

6K8

K

2

K

C926
100n

R920

430 1%

R921

1K2 1%

3

K

408
K3

8
1%

VI VO

IC902
LM317

IC903
L7805CV

VI

IC201

PIN 1 2,9V PIN 19 2,5V PIN 36 8,5V
PIN 2 6,2V PIN 20 2,5V PIN 37 4,2V
PIN 3 6,2V PIN 21 0,2V PIN 38 0,7V
PIN 4 6,2V PIN 22 3,3V PIN 39 2,9V
PIN 5 1,2V PIN 23 3,3V PIN 40 3,6V
PIN 6 3,9V PIN 24 3,3V PIN 41 –
PIN 7 3,4V PIN 25 2,0V PIN 42 2,2V
PIN 8 1,8V PIN 26 1,5V PIN 43 2,9V

PIN 9 3,8V PIN 27 2,5V PIN 44 3,2V
PIN 10 8,4V PIN 28 3,8V PIN 45 4,2V
PIN 11 – PIN 29 3,8V PIN 46 4,2V
PIN 12 3,2V PIN 30 1,5V PIN 47 4,8V
PIN 13 4,4V PIN 31 1,5V PIN 48 3,9V
PIN 15 3,5V PIN 32 1,7V PIN 49 1,8V
PIN 16 0,0V PIN 33 0,7V PIN 50 3,5V
PIN 17 2,2V PIN 34 1,4V PIN 51 4,5V
PIN 18 2,5V PIN 35 3,6V PIN 52 6,5V

Q401

R142

3K3

R919
390 1%

C930
100n

C406

1u25V

F

TR101

BC558B

R143

10K

C403

33K

R151

C404

K

33p

K

33p

TR102

BC558B

+16.5V

D912
1N4148

C927

470u25V

TR104

PH2222

+124V

+12V

R922

15

TR902

BC337/25

C928

22u25V

C931

220u16V

R152
10K

L102
22uH

+8V

+5V

C119
100n

R144

33K

TR103

BC558B

C123

47u25V

R153
10K

R148

K

R147

C120

47u50V

100K

R146

R145

33K

47K

F

F

C121

C122

100n

100n

L103

120uH

2

4

6

8

51

R157

10K

R158

18K
C117

47u25V

R201

2K2

K

C247

1n

15K

D109

ZTK33A/KA33V

+12V

37

TUNER

ENV-578G9F2

3300KHC3X9751

D110

BA282
SYSTEM
/8 ONLY

D1

11BA282

R159

+12V

10K

TR109

BC548B

R160
22K

AB

K
C201

+8V

R202

6K8

VR201

5K

AGC

IC203

PIN 1 1,7V
PIN 3 8,5V
PIN 7 3,4V
PIN 8 4,2V

PIN 9 1,4V
PIN 10 1,5V
PIN 15 0,7V
PIN 16 5,7V

SYSTEM /5;/6;/8 ONLY

+8V

C236

47u25V

C127

1u100V

R161
22K

100n

K

C222
100n

IC202

PIN 1 5,0V
PIN 5 0,8V

PIN 9 5,0V
PIN 11 2,9V
PIN 12 2,9V
PIN 14 1,3V
PIN 16 1,3V

K

TR110

BC548B

+124V

ANTENNA

L201*

F201*

12

10

8

54

C202
100n

K

C203
100n

24

23

SWITCH

22

21

47

49
48

C223

F

2.2u100V

+8V

SYSTEM /5; ONLY

IC203 TDA8395

16

ACC BELL PLL

3

INT.
FACE

C237
100n

1

R164

R165

33K

33K

10
11

R166
33K

1uH

3

C204
12p

K

RGB

IC201 TDA8362A N3

AGC

R233
8K2

TUNING CONTROL

78

K

C238
100n

F207*

F206*

F205*

F204*

3

C231

C230

4n7

VR202

10K

13

+16.5V

R508
4K7

AB

C217
2n7

F

DRIVE

R235
18K

+8V

R236
820K

C232

10n

R237

8K2

C502
3n3

D501

2.7V

R507

15K

4.7u25V

10u50V

4.7u25V

R509

6.2

470u25V

C512

100u25V

C509

22u25V

C503

K

3n3

F
C501
100n

R501

3K9

1214151115 42

C218

C219

C220

26 1725501

37 4338 40 39 42

F

F

14

CUC 400 Layout of the PCBs and Circuit Diagrams

SPEAKER

C511

VERTI-

K

C214*

1u100V

CAL

DRIVEHORIZONTAL

C233
100n

+5V

R238
560K

F

5

7

4

9

8

C504

2.2u100V
R503

1K5

R502
100

1N4148

TR205

BC558B

C510

220n

IC501

STAND

MUTE

TDA7245A

D205

+12V

20

19

18

44

+12V

R229

R230

10K

+8V

SPEAKER

8 OHM

ONLY

3

BY

C505

0.47u100V

R504

1N4148

2.2u100V

TR209

BC558B

R225

270

R226

100

R227

100

R228
10K

K

C234
390p

1K

14" 470 2%

20"/21" 390 2%

1K5

21"

D204

R224

100K

C221

1
6
10
11
12
13
14
15
16
17
18

2

R223
100K

L906
22uH

R231

BC558B

R239

3K3

TR208

R506

220

R505

1

F

C508

220n

R

G

B

SW14

R243

TR206

BC558B

10K

14" 12 OHM

20"/21" 8 OHM

CNR9

C506

470u16V

K

RED

GND

GREEN

GND

+12V

SW

+124V

14" ONLY

+180V

20"/21"

ONLY

18

TR207

BC548B

R232

510

K

2%
C235
680p

+12V

CNR4

C507
2n2

24

R240
5K1

D601

L601

#R603

150uH

+12V

R601

#R607

10K

R602
2K2

K

C602
390p

L602

#R610

150uH

+12V

R615

#R616

5K1

R614

1K2

VR601
1K

K

C605

VG

390p

L603

#R619

150uH

+12V

7

6

5

4

23

3BLUE

2

+12V

R627

1

470

D604

+12V

1N4148

CNR10

C805
27p

R701

5K6

F

R704

1K

D703

4.7V

R818

10K

R703

R705

4.7u63V

C246
4n7

470

22K

R709

C709

HEATER

GND32

1

K

7

C711

3K9

VR701

F

+8V

R624
5K1

R623

1K2

VR602
1K

VB

20

21

F

C707

220n

R702
22K

D702

C706

100u35V

1N4936

IC701

TDA3653B

13

F

F

47n

220n160VMKT

R708

18K

2K

R712

4K7

R814

330

C701
10n

C702
1n5

F

R707

1

R706

390

F

C708

C710

1000u35V

VR702

100

C812

4.7u63V

968

42

K

#R625

C608
680p

#R632

C705
100n

5

R711

1.8

JV

R710

1N4148

1N4148

1N4148

19

J5

J6

680

#TR602

R608

270

D602

#TR604

R617

270

D603

#TR606

R626

270

C601 220p

C604 220p

C606 220p

K

22

15

C811

1n

K

R604

K

R605

TR601
BF421

R611

K

R612

TR603
BF421

R620

K

R621

TR605
BF421

+12V

BC548B

1K

1K

1K

1K

1K

1K

+5V

TR803

VR703

10K

20"/21" 10K

R817

R809

1N4148

R606

1K5

R613

1K5

R622

1K5

14" 13K

R801

1K

+26V
14" 470U35V

20"/21" 1000U35V

680n250VPPN

R807
10K

J1

JUMPER FOR R808 (14")

29203-114.04 (20")
29203-115.97 (21")

+12V

TR802
BC637

C810

D801

#-PARTS 14" 20"/21"

#TR602 BF422 BFG71
#TR604 BF422 BFG71
#TR606 BF422 BFG71
#R603 10K 12K
#R610 10K 12K
#R619 10K 12K
#R607 2K7 10K
#R616 2K7 10K
#R625 2K7 10K
#R632 6.2 6.8

25

R630

1K5

4n71KV

R802

1K

F

F

C802

C801

220n

220n

R815

1M

R816

33K

D803
BA157

C807
160VPPN

L801

09246-

2n2

C703

C808

F

F

JH

L802

R811

22

F

+124V

+124V

14" ONLY

+180V

20"/21"

1N4936

390p400V

6n81600V

14" / 20" 21"

C807 420n 250n
R809 820/2W 1K5/4W
L801 -860.21 -850.21

J2

T802

R810
150

R812

0.51

F

C809

22n

C610
K

D701

C704

C806

CNR5

+124V

F

K

R808
820

16

R813
120

FBT

J62

CNR10

F

CNR6

J1
J2
J3
J4
J5
J6

7
9
3
4
5
6
8
1

SG FOC

J4

1

2

3

F.BEAD

SG

J62

17

L803

J3

330n250VPPN

R806

6.8

L804 15uH

R805

6.8

TR801
BU508D

A34JLL90X23
A48JLL90X01
A51JSW90X03

J

H

O

9O

C.A.
25KV

T801

FLYBACK

FOC

4

R803

5

10

C803

F

20"/21"

ONLY

D804

BYV16

R804

9

10

C804
22u250V

3

1
2

7

10

C805

F

22n50V

SYSTEM

PAL

SECAM

NTSC 3.58

NTSC 4.43

B/G F203* F204* F204* F204*

D/K

I

M

IC204*
C214*

SAW FILTER G1875M K2955M K2955M K6259K

F201*

L201*

/4 /5 /6 /8

XXX

XX

X

X

F205* F205*

XX

2,2µH1µH1µH1µH

X

X

X

X

X

XX

F05*

F206*

F207*

X

GRUNDIG Service

3 - 3

GRUNDIG Service

3 - 4

Layout of the PCBs and Circuit Diagrams CUC 400 Layout of the PCBs and Circuit Diagrams CUC 400

1

2

4

5

3

28

26

27

18

7

14

8

11

15

16
17

19

22

21

20

6

12

10

9

13

Chassis Board

Solder side, bottom view

3 - 5 3 - 6

GRUNDIG Service

GRUNDIG Service

CUC 400 Layout of the PCBs and Circuit Diagrams

Teletext

CRT Panel

25

23

24

23 2V/cm, 20µs/cm

24 5V/cm, 20µs/cm

25 100V/cm, 20µs/cm

R
0V

G
0V
B
0V

0V

R
0V

G
0V

B
0V

GRUNDIG Service 3 - 7