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Grundig ST 55 - 750 Service Manual Download Page 43

Servicearbeiten nach Bausteinwechsel: siehe Abgleich Seite 3-1 (4., 5.)
Servicing work after replacing the module: see alignment page 3-3 (4., 5.)

ZF-Verstärker / IF Amplifier 29504-162.57

270

CR2246

M

M

BB419

CD2243

M

STL

STL

STL

ENA

ZF

M

STL

F

0,22u

C2246

BB619

CD2248

BA582

CD2218

L2201

15u

M

8

1

3

7

-715

F2247

56p

CC2249

2,7p

CC2247

56p

CC2248

M

M

4,7k

CR2218

470k

CR2289

CR2282

470k

CR2287

10k

180k

CR2295

CR2284

470k

4,7k

CR2221

CR2279

**

CR2285

**

STL

M

12k

CR2234

M

1n

CC2233

4,7k

CR2233

M

BA582

CD2217

M

M

680

CR2232

1,5p

CC2238

8

1

3

7

-705

F2235

M

BB419

CD2237

100k

CR2247

M

M

M

47k

CR2216

1n

CC2216

15k

CR2213

10k

CR2256

47k

CR2217

47k

CR2222

22k

CR2223

0,1u

CC2224

BF660

CT2235

BC858

CT2216

M

M

M

M

CT2207

22k

CR2209

BC848

CT2210

M

BC848

CT2225

330k

CR2252

M

FM

TUNER-AGC

AGC

PLL

AFC

VCO

AM

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

1

2

3

4

5

6

7

8

TDA9815

IC2230

-

-

ZF

ZF

100k

CR2248

+G

SDA

SCL

+12V

100k

CR2249

470k

CR2253

BC858

CT2213

10k

CR2303

STL

560k

CR2251

M

10k

CR2230

M

M

M

LS4148

CD2316

8,2p

CC2262

F

0,22u

C2253

INTER-

CARRIER

0,1u

CC2256

0,1u

CC2292

M

100k

CR2298

100k

CR2299

STL

BB619

CD2240

STL

BB419

CD2238

M

STL

M

FBAS

U

U

RV

100k

CR2296

75k

CR2297

M

STL

STL

680

CR2262

47k

CR2318

STL

3k

CR2261

BB419

CD2239

M

AUDIO

M

LL4148

CD2274

6

7

8

1

2

3

4

F2260

-632

**

CR2266

47n

CC2230

3,6k

CR2263

STL

1n

CC2261

CR2283

22k

220p

CC2272

M

BB419

CD2244

270p

CC2266

BB620

CD2266

100k

CR2237

100k

CR2236

100k

CR2267

M

M

0,1u

CC2271

BC858

CT2270

220

CR2268

BB619

CD2242

M

M

100k

CR2238

3,3k

CR2270

CD2249

BB619

0,1u

CC2223

M

M

8

7

3

1

(5,3MHz)

F2267

TEST

VSS

A2

A1

A0

SCL

SDA

VCC

1

2

3

4

5

6

7

8

X24C02

IC2210

100k

CR2243

M

M

M

M

M

BC848C

CT2265

BC858

CT2295

M

2,2

CR2231

15p

CC2231

0,1u

CC2237

BC848

CT2290

0,1u

CC2201

180

CR2202

0,1u

CC2236

2,7p

CC2225

0,1u

CC2240

M

STL

0,1u

CC2243

M

M

3

2

1

MC78M05

IC2201

M

M

LL4148

CD2215

STL

+

47u/16V

C2201

33n

CC2202

4,7k

CR2293

M

BC858

CT2275

M

M

M

M

M

M

0,1u

CC2203

+

22u/25V

C2203

M

M

M

68p

CC2273

**

CR2271

220

CR2269

M

M

10k

CR2274

M

3,9p

CC2239

M

+

2,2u/100V

C2242

+

2,2u/100V

C2222

220

CR2301

1,1k/2%

CR2272

1,1k/2%

CR2273

1,1k/2%

CR2275

10k

CR2323

BC848

CT2320

BC848

CT2276

22k

CR2322

47k

CR2321

M

M

1

3

4

6

7

8

-731

F2206

M

1n

CC2274

0,1u

CC2252

3,9p

CC2241

M

M

M

680k

CR2320

M

M

0,1u

CC2245

39p

CC2263

0,1u

CC2251

0,1u

CC2250

220

CR2302

NF

+

2,2u/100V

C2241

M

1k

CR2265

M

10k

CR2294

M

M

BC848

CT2230

1

3

4

6

7

8

07202-708

F2245

22k

CR2292

2,7p

CC2242

M

M

M

M

+

47u/16V

C2316

+

47u/16V

C2311

82k

CR2317

6,8k

CR2316

68k

CR2312

56k

CR2311

10k

CR2257

6,8p

CC2244

M

1

3

4

6

7

8

07202-705

F2240

10k

CR2281

M

2,2k

CR2206

M

BA582

CD2216

BA582

CD2214

3

G3957

F2217

U

AFC

1n

CC2206

M

M

0,1u

CC2291

M

0,1u

CC2286

BC848

4,7k

CR2212

47k

CR2211

M

M

22k

CR2207

+

4,7u/63V

C2318

CR2286

22k

CD2241

BB419

22k

CR2288

2,7p

CC2254

M

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

MC144110DW

IC2280

M

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

MC144110DW

IC2290

0

CR2264

1

2

3

4

5

8

10

K6262

F2218

CR2291

10k

3

2

1

MC78L15

IC2202

M

+12V

+12V

+12V

+12V

+12V

+12V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+15V

+5V

+5V

+5V

050795

SOLAM. PREVISTO PARA

PREVU

SOLO PREVISTO

IF REQUIRED

NUR VORGESEHEN

**

1

2

3

8

10

ZF-VERSTAERKER  29504-162.57

AMPLIFI. FI

AMPLIFICADOR FI

AMPLIFICATORE FI

IF AMPLIFIER

6

9

2

1

3

8

13

12

11

14

5

10

15

7

4

2

5

5

4

4

1

4 - 24

4 - 23

GRUNDIG Service

CUC 7350

GRUNDIG Service

CUC 7350

Platinenabbildungen und Schaltpläne / Layout of the PCBs and Circuit Diagrams

Platinenabbildungen und Schaltpläne / Layout of the PCBs and Circuit Diagrams

Summary of Contents for ST 55 - 750

Page 1: ...nuals for the Complete Service nderungen vorbehalten Printed in Germany Service Manual Sach Nr Subject to alteration VK 22 1095 Service Manual Part No 72010 016 80 SERVICE MANUAL D Btx 32700 CUC 7350...

Page 2: ...pare Parts List 5 1 5 8 GB D Inhaltsverzeichnis Seite Allgemeiner Teil 1 1 1 15 Technische Daten 1 3 Modul bersicht 1 3 Hinweise zu den Bauteilen und Oszillogrammen 1 4 Sicherheits und Servicehinweise...

Page 3: ...iten Text 1 pages text Musikleistung Music power 2x 8W 2x 8W 2x 8W 2x 8W 2x 8W Anschl sse Front Connections front Kopfh rer Headphones Stereo 3 5mm Klinke stereo 3 5mm jack Video IN 1x Cinch FBAS 1x C...

Page 4: ...rato di carbone Resistencia de capa de carb n Film carbonique Metalloxidwiderstand Metal oxid resistor Resistenza ad ossido metallico Resistencia de xido met lico M taloxide Schwer entflammbarer Wider...

Page 5: ...eflection unit or loudspeaker On completion of the repairs the leads must be laid out as originally fitted at the factory to avoid later failures or disturbances Mains cable TheTVreceivermustonlybeope...

Page 6: ...B Y 50Hz vert 15625Hz hor Segnale B Y 50Hz vert 15625Hz hor Se al B Y 50Hz vert 15625Hz hor 100 B Y B Y Signal 100Hz vert 31250Hz hor B Y Signal 100Hz vert 31250Hz hor Signal B Y 100Hz vert 31250Hz h...

Page 7: ...ndcastle 100Hz vert 31250Hz hor 50 SSC Supersandcastle 50Hz vert 15625Hz hor SUR ROUND Surround SYNC Sync Signal Sync Signal Signal sync Segnale sync Se al de sync FH Hochspg EHT voltage Haute tens Al...

Page 8: ...betr Switching volt data mode Tens de commut fonct donn es Tens di commut dati Tens conmut datos U UDATA EXT Schaltspg U Data extern Switching volt Data ext Tension de commutation U Data externe Tens...

Page 9: ...ens de regul retardee Tens regul retardada HOR Horizontale Ansteuerung Horiz drive Synchr lignes Pilotaggio orizz Exitaci n horiz HOR 2FH 31250Hz Ansteuerimp f r Zeilenendstufe 31250Hz Triggering puls...

Page 10: ...UILLE EC EST MONTE NOT FITTED IF HEADPHONE SOCKET IS FITTED ONLY WITH HEADPHONE SOCKET IS FITTED NO EXISTE CUANDO EL RECEPTOR IR ESTA EQUIPADO N EXISTE PAS SI REC IR EST MONTE NOT FITTED IF IR RECEIVE...

Page 11: ...Ger t ausgeschaltet ist k nnen durch Blitzschlag in das Stromnetz und oder in die Antennenleitung Besch digungen auftreten Bei Gewitter sollten Sie deshalb den Netz und Antennenstecker ziehen Sch tzen...

Page 12: ...x oder c dr cken um gew nschten Standard zu w hlen In der zweiten Zeile kann die Farbnorm ver ndert werden Die Stellung COLOR AUTOMATIC braucht normalerweise nicht ver ndert werden Sollten Probleme au...

Page 13: ...te direkt abrufen Antwortfreigabe Seiten STOP Funktionen mit Taste x oder c anw hlen und mit Taste Oaufrufen Die Funktionen 1 3 4 und 5 k nnen auch ohne Aufrufen der Dialogzeile folgenderma en ausge f...

Page 14: ...den Tasten die Men tafel in die Mitte stellen Service and Special Functions 1 Special Functions 1 1 Storing the Analog Values Theenteredanalogvaluesareeitherstoredautomaticallyafterapprox 8 seconds or...

Page 15: ...he Hotel Mode Select Hotel ON in the Service Menu When the Hotel Mode is activated it is no longer possible to call up the station channel menu with the PC AUX button the currently set volume level is...

Page 16: ...Allgemeiner Teil General Section CUC 7350 1 16 GRUNDIG Service Notizen Notes...

Page 17: ...ference voltage provided at Schaltungsbeschreibung 1 Netzteil 1 1 Prinzipschaltung Stromrichterk nnensubharmonischeSchwingungenaufweisen wenn sie mit einem Arbeitstakt 50 bei kontinuierlichem Induktio...

Page 18: ...ompensation 1 2 Voltage Feedback Input 4 8 RT Vref R R 2 5V 3 6V Vref UVLO Vcc UVLO Vcc 7 36V Vcc Vin Vc Output Power Ground Current Sense Input 7 6 5 3 Rs T665 R S Q PWM Latch Sink Only Positive True...

Page 19: ...ie Aus gangsports 16 17 18 des P mit einer Amplitude von ca 3 5V an die Bildrohrplatte Anschlu RGB 1 3 5 2 System Control 2 1 Microcomputer The mask programmed 8 bit Microcomputer IC80000 decodes the...

Page 20: ...F32005 Das vom Oberfl chen wellenfiltergeformteSignalgelangtsymmetrischandiePins48und49 2 7 Protection Circuit USchutz The horizontal flyback pulse is fed from the collector T53001 via the resistors R...

Page 21: ...Signal The external CCVS signal from the Cinch socket is available at IC34015 17 On Pin 11 the CCVS signal from the Scart socket is present on VHS playback and on Pin 10 the chroma signal on S VHS pl...

Page 22: ...S signal together with the sound difference signal passes through a bandpass made up of CR32027 CT32025 CR32023 C32023 and L32026 which separates the intercarrier signal from the CCVS signal to Pin 15...

Page 23: ...eneration of the Horizontal and Vertical Sync Signals The TV signal processor IC34015 13 17 is connected to the CCVS signalfromtheIFandfromtheEURO AVsocket Followinganinternal colour trap where the co...

Page 24: ...ernal amplification the horizontal drive signal for the line output transistor is provided at IC34015 40 hat wird das Y Signal zur weiteren Signalverarbeitung und f r das Amplitudensieb aufgeteilt Das...

Page 25: ...c generator has been replaced by a line counter When no synchronising signals are received the line oscillator is free running From this line oscillator the vertical oscillator is derived by counting...

Page 26: ...UTER IC80000 13 17 8 19 15 17 Zeilentrafo Line Transformer IC34015 8 6 16 1 3 47 8 zur Zeilenendstufe to Line Output Stage 40 Horizontaltrigger Triggering Horizontal T52005 A OFW F32005 14 29 16 30 CI...

Page 27: ...aster ohne Finetuning und m glichst niedrigem Kanal abstimmen Servicemen mit Taste aufrufen siehe oben Mit die Zeile AFC ALIGN anw hlen FuBK Testbild einspeisen Farbkontrast i Minimum Kontrast Maximum...

Page 28: ...en derAbgleichfunktionen oderdurchVerlassendesServicemen s Mit Taste das Servicemen verlassen Vorbereitung Programmplatz mit Senderbild aufrufen Servicemen mit Taste aufrufen siehe oben Mit die Zeile...

Page 29: ...e horizontal lines for maximum sharpness With the control SCREEN at the line transformer below the focus control set the black level at the test point with the highest black level to 100 105V for 14 a...

Page 30: ...est pattern for Alignment functions 0 2 3 4 For adjusting the Vertical Slope use a video generator eg Grundig VG 1000 Alignment functions 0 Horizontal shift 1 Vertical Slope 2 Vertical Amplitude 3 S C...

Page 31: ...8 R53012 D50003 D61003 D50006 D57013 R53011 R52004 R52008 R21503 R53014 R54001 E B T53001 L53011 L53014 R53017 BR106 BR099 BR102 C61007 C54001 C53016 C53013 C53017 1 15 TON ZF L53012 R54002 R57016 R52...

Page 32: ...CR34036 CR32023 CR32021 CR80016 CR44001 CR80007 CR87001 CR34037 CR83001 CR80052 CR80051 CR80031 CR46026 CR80027 CR80026 CR80022 CR80042 CR80037 CR80011 CR84002 CR83003 CR83004 CR83002 CR80023 CR80013...

Page 33: ...17 68 249 C54001 123 191 C54006 99 179 C54007 88 172 C57012 95 133 C57016 118 97 C60011 209 174 C60012 210 164 C60013 191 185 C60014 198 177 C60018 152 180 C60018A 151 179 C60018B 152 180 C60024 170 1...

Page 34: ...118 35 CR32013 123 37 CR32014 125 33 CR32016 112 31 CR32018 85 99 CR32019 89 96 CR32021 83 110 CR32022 76 105 CR32023 72 105 CR32024 82 92 CR32026 91 38 CR32027 79 94 CR32029 82 95 CR33014 75 89 CR330...

Page 35: ...16 2V cm 10 s cm R B G 0V 0V 0V 16A 2V cm 10 s cm mit Text with Text R B G 0V 17 500mV cm 5ms cm 0V 18 1V cm 5ms cm 0V 19 10V cm 5ms cm 0V 20 2V cm 5ms cm 0V 21 5V cm 10 s cm 0V 22 5V cm 10 s cm 0V 23...

Page 36: ...3 9 8 0 48 2 10 11 12 13 b c 1 KEYBOARD 29304 779 02 CLAVIER KEYBOARD TECLADO TP 720 0V 0V SCL SDA 27 2V cm 200 s cm 0V 28 2V cm 100ns cm 0V 29 1V cm 5ms cm V Sync 0V 30 1V cm 20Ms cm H Sync 0V 31 1V...

Page 37: ...AV U POWER OFF U POWER OFF BC858B CT46040 BC858B CT46020 BC858B CT46025 07202 342 97 F32001 L 10u L31001 L 10u L31002 M M M M M M P 1 2 S M M M n V M M M M K 470p C60024 M M M M M M M M M M M M M M M...

Page 38: ...R53017 0 1u CC32025 4 7 R40019 M 4 7 R40009 10k R53015 10 R50003 2 2 R50001 22 R52006 10 1 R54001 R50004 5 6k 390p C54006 100p C50001 L53001 1 R53011 4 R53012 6 8 1 R53014 1 R21503 0 51 1 R52008 150 1...

Page 39: ...640 CD2121 B11P CD2124 BB640 CD2103 B10P CD2104 BA592 CD2031 BA592 CD2071 BA592 CD2101 470 CR2135 4MHz Q2143 Druck Druck Druck TEST VSS A2 A1 A0 SCL SDA VCC 1 2 3 4 5 6 7 8 X24C01 CIC2120 3 1 BUFFERS...

Page 40: ...p CC2142 100p CC2066 10n CC2118 1n CC2102 39n CC2153 1 2p CC2178 1 2p CC2179 2 7p CC2183 2 7p CC2184 2 7p CC2186 2 7p CC2187 1 8p CC2189 1 8p CC2191 10n CC2192 10n CC2086 1n CC2076 120p CC2078 10n CC2...

Page 41: ...LAM PREVISTO PARA SOLO PREVISTO PREVU ONLY IF REQUIRED NUR VORGESEHEN 906 5 4 8 3 9 7 1 0 12V AL TRANSF DE LINEAS ALLO TRASF DI RETE VERS TRANSF ALIMENT TO LINE TRANSFORMER ZUM ZEILENTRAFO PLACA ZOCAL...

Page 42: ...L EURO AV AUDIO R EURO AV AUDIO L EURO AV AUDIO R AUDIO R EURO AV L3962 150 CR3963 10u L3961 3n3 CC3947 BC858B CT3945 3n3 CC3945 100n CC3964 SDA SCL BC858B CT3947 STL 100p CC3958 1k8 CR3946 1k8 CR3942...

Page 43: ...BC848C CT2265 BC858 CT2295 M 2 2 CR2231 15p CC2231 0 1u CC2237 BC848 CT2290 0 1u CC2201 180 CR2202 0 1u CC2236 2 7p CC2225 0 1u CC2240 M STL 0 1u CC2243 M M 3 2 1 MC78M05 IC2201 M M LL4148 CD2215 STL...

Page 44: ...20 9 19 18 17 16 15 14 13 12 11 10 8 7 6 2 1 MC68HC705J2P IC98010 K 27p C98004 10M R98006 BR98002 K 27p C98003 4 7k R98002 4MHz Q98006 BR98006 F 0 1u C98001 n V PB4 PB0 PB1 PB2 PA4 VDD PA2 R G B FBKG...

Page 45: ...PLATTE 07 PROCESSOR BOARD 07 KEIN E TEIL NO SPARE PART X SIEHE GESONDERTE E LISTE X SEE SEPARATE PARTS LIST WW WAHLWEISE WW OPTIONAL SACH NR PART NO 29701 093 01 02 03 04 07 BEZEICHNUNG DESCRIPTION SA...

Page 46: ...DIODE LS 4148 CD 46041 8325 004 148 SMD DIODE LS 4148 CD 50011 8325 004 148 SMD DIODE LS 4148 CD 50016 8325 004 148 SMD DIODE LS 4148 CD 52001 8325 004 148 SMD DIODE LS 4148 CD 57011 8325 004 148 SMD...

Page 47: ...100 107 R CHIP 0805 27 KOHM 5 CR 57012 8706 100 131 R CHIP 0805 270 KOHM 5 CR 57013 8706 297 121 R CHIP 1206 100 KOHM 5 CR 57014 8706 100 289 R CHIP 0805 4 7 KOHM 2 CR 57016 8706 100 121 R CHIP 0805 1...

Page 48: ...2 342 97 ZF SPULE F 32005 8319 001 984 OFW G 1984 M F 32020 8141 112 405 FILTER 7X7 405 F 32021 8602 755 021 CER TRAP 21 TPS 5 5 MHZ F 33025 8140 535 390 SPULE 7X7 390 FARBE 307 IC 34015 8305 338 374...

Page 49: ...LIP UPPER WW 29607 285 11 2 SPULENKLAMMER OBEN COIL CLIP UPPER 0024 000 09246 193 31 ENTMAGNETISIERUNGSSPULE DEGAUSSING COIL WW 09246 193 71 ENTMAGNETISIERUNGSSPULE DEGAUSSING COIL 0025 000 8300 020 5...

Page 50: ...E DEGAUSSING COIL 0025 000 8300 020 534 BILDR A 51 JSW 90X03 ORI PICT TUBE A 51 JSW 90X03 WW 8300 020 532 BILDR A 51 EAM 31X01 PHI PICT TUBE A 51 EAM 31X01 WW 8300 020 533 BILDR A 51 JAR 43X01 MW PICT...

Page 51: ...ice Manual Sicherheit Sach Nummer 72010 800 00 sowie zus tzlich dieeventuellabweichenden landesspezifischen Vorschriften The regulations and safety instructions shall be validasprovidedbythe Safety Se...

Page 52: ...GAUSSING COIL 0025 000 8300 020 037 BILDR A 34 EAC 01X06 PHI PICT TUBE A 34 EAC 01X06 0026 000 29201 360 01 ANODENKAPPE M HOCHSPG KABEL C R T SOCKET 0028 000 29631 816 01 2 GEBERHALTERUNG REMOTE CONTR...

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