grun_cuc7003.pdf

SERVICE MANUAL

Service

Manual

Zusätzlich erforder-

liche Unterlagen

für den

Komplettservice:

Service

Manual

Sicherheit

Safety

D Btx * 32700 #

Sach-Nr./Part No.

72010-019.40

Additionally

required Service

Manuals for the

Complete Service:

Sach-Nr./Part No.

72010-800.00

CUC 7303

P 37 - 066/5

(9.21595-02 / G.CE 5602)

T 51 - 720 text

(9.21538-01 / G.CD 9675)

P 37 - 071

(9.21595-01 / G.CE 5302)

(9.21595-21 / G.CE 5902)

T 51 - 720 text GB

(9.21538-64 / G.CD 9775 GB)

T 51 - 731 text

(9.21597-01 / G.CE 5075)

P 37 - 071 GB

(9.21595-63 / G.CE 5502 GB)

T 51 - 732/5 text

(9.21597-02 / G.CE 5175)

P 37 - 731 text

(9.21589-01 / G.CE 4802)

(9.21589-01 / G.CE 4883)

T 55 - 731 text

(9.21598-01 / G.CE 6775)

(9.21598-01 / G.CE 6783)

P 37 - 731 text GB

(9.21589-64 / G.CE 4902 GB)

T 55 - 731 FT GB

(9.21598-64 / G.CE 7075 GB)

P 45 - 731 text

(9.21557-01 / G.CE 2652)

T 55 - 732/5 text

(9.21598-02 / G.CE 6875)

T 51 - 071

(9.21596-01 / G.CE 5275)

T 55 - 733/5 text

(9.21598-75 / G.CE 6975)

TP 711 (29642-062.01)

TP 712 (29642-063.01)

TP 712

0 AV

P+

–

TXT

P–

– ´

VIDEO

AUX

P/C

SAT

Änderungen vorbehalten

Printed in Germany

Service Manual Sach-Nr.

Subject to alteration

VK 221 1196

Service Manual Part No. 72010-019.40

–

Allgemeiner Teil / General Section

CUC 7303

Es gelten die Vorschriften und Sicherheitshin-

weise gemäß dem Service Manual "Sicherheit",

Sach-Nummer 72010-800.00, sowie zusätzlich

die eventuell abweichenden, landesspezifischen

Vorschriften!

The regulations and safety instructions shall be

valid as provided by the "Safety" Service Manual,

part number 72010-800.00, as well as the

respective national deviations.

Inhaltsverzeichnis

Table of Contents

Seite

Allgemeiner Teil ................................ 1-1... 1-14

Technische Daten ....................................................................... .1-3

Modulübersicht ............................................................................. 1-5

Sicherheitshinweise ..................................................................... 1-5

Hinweise zu den Bauteilen ........................................................... 1-5

Hinweise zu den Oszillogrammen ................................................ 1-6

Schaltplansymbole ....................................................................... 1-7

Bedienungsanleitung (T 55-731 text) ........................................... 1-8

Sonder- und Servicefunktionen .................................................. 1-12

Blockschaltbild ........................................................................... 1-14

Beschreibungen .................................. 2-1... 2-6

1. Netzteil ..................................................................................... 2-1

2. Systemsteuerung ..................................................................... 2-2

3. TV-Signalprozessor TDA 8362 A ............................................. 2-3

3.1 Übersicht ......................................................................... 2-3

3.2 ZF .................................................................................... 2-3

3.3 FBAS-Signal .................................................................... 2-3

3.4 Externes FBAS-Signal ..................................................... 2-3

3.5 Ton-ZF ............................................................................. 2-4

3.6 Luminanz- und Chrominanzsignal ................................... 2-4

3.7 SECAM-Signalweg

und automatische PAL/SECAM-Umschaltung ................ 2-4

3.8 RGB-Signalweg ............................................................... 2-5

3.9 Gewinnung der H- und V-Synchronsignale ..................... 2-5

3.10 Zeilenoszillator ............................................................... 2-5

3.11 j 1-Regelung ................................................................... 2-5

3.12.

Page

General Section ................................. 1-1... 1-14

Technical Data ............................................................................. 1-3

Module List ................................................................................... 1-5

Safety Advice ............................................................................... 1-5

Hints to the Components ............................................................. 1-5

Hints to the Oscillograms ............................................................. 1-6

Circuit Diagram Symbols ............................................................. 1-7

Service Instructions (T 51-720 text GB) ..................................... 1-10

Special and Service Functions ................................................... 1-13

Block Circuit Diagram ................................................................ 1-14

Descriptions ...................................... 2-7... 2-12

1. Power Supply ........................................................................... 2-7

2. System Control ........................................................................ 2-8

3.TV Signal Processor TDA 8362 A ............................................. 2-9

3.1 Overview ......................................................................... 2-9

3.2 IF ..................................................................................... 2-9

3.3 CCVS-Signal ................................................................... 2-9

3.4 External CCVS Signal ..................................................... 2-9

3.5 Sound IF ........................................................................ 2-10

3.6 Luminance and Chrominance Signal ............................ 2-10

3.7 SECAM Signal Path

and Automatic PAL/SECAM Switching ......................... 2-10

3.8 RGB Signal Path ........................................................... 2-11

3.9 Generation of the Horizontal and Vertical Sync Signals 2-11

3.10 Line Oscillator ................................................................ 2-11

3.11

2-Regelung ................................................................... 2-5

3.13. Supersandcastle SSC ..................................................... 2-6

3.14 Cut-Off-Einstellung .......................................................... 2-6

3.15 HDR-Endstufe ................................................................. 2-6

3.16 Vertikal-Ablenkung .......................................................... 2-6

3.17 Non-Interlace Kompensation bei Videotext ..................... 2-6

3.18 Koinzidenz ....................................................................... 2-6

Abgleich ........................................................ 3-1

Platinenabbildungen

und Schaltpläne ................................ 4-1... 4-18

Chassisplatte ............................................................................... 4-1

Oszillogramme ............................................................................. 4-7

Gesamtschaltplan ........................................................................ 4-9

Bildrohrplatte 29305-022.16 ....................................................... 4-14

Bildrohrplatte 29305-022.14/.15 ................................................. 4-16

Prozessorplatte .......................................................................... 4-18

Ersatzteilliste ....................................... 5-1... 5-4

1 - 2

GRUNDIG Service

1-Phase Control .......................................................... 2-11

3.12. j 2-Phase Control .......................................................... 2-11

3.13. The Super Sandcastle SSC .......................................... 2-12

3.14 Setting of the Cut-Off Voltage ....................................... 2-12

3.15 HDR Output Stage ........................................................ 2-12

3.16 Field Deflection Stage ................................................... 2-12

3.17 Non-Interlace Compensation with Teletext ................... 2-12

3.18 Coincidence .................................................................. 2-12

Adjustments ................................................. 3-2

Layout of the PCBs

and Circuit Diagrams ........................ 4-1... 4-18

Chassis Board .............................................................................. 4-1

Oscillograms ................................................................................ 4-7

General Circuit Diagram .............................................................. 4-9

CRT Panel 29305-022.16 .......................................................... 4-14

CRT Panel 29305-022.14/.15 .................................................... 4-16

Processing Board ....................................................................... 4-18

Spare Parts List ................................... 5-1... 5-4

P 37-066/5

P 37-071

P 37-071 GB

P 37-731 text

P 37-731 text GB

P 45-731 text

Bildröhre / Picture Tube

Sichtbares Bild

Visible picture

34cm

41cm

Bildschirmdiagonale

Screen diagonale

37cm (14")

Tinted glass

37cm (14")

Tinted glass

37cm (14")

Tinted glass

37cm (14")

Tinted glass

37cm (14")

Tinted glass

45cm (17")

Black planar

Ablenkwinkel

Deflection angle

Bildwechselfrequenz

Vertical frequency

50Hz

Elektronik / Electronic

Programmspeicherplätze

Programme positions

69 TV + 1 AV

AV-Auswertung

AV evaluation

auf jeden Programmplatz programmierbar /

programmable for every programme position

Kabeltuner für Hyperband (8MHz)

Cable tuner for hyperband (8MHz)

ja/

yes

ja/

yes

nur UHF/

UHF only

ja/

yes

nur UHF/

UHF only

ja/

yes

TV-Normen

TV standards

PAL, SECAM,

NTSC 4.43MHz

B/G, D/K/K'

PAL/

B/G

PAL/

B/G

PAL/

B/G

Videotext

Teletext

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

Musikleistung

Music power

Anschlüsse Rückwand / Connections Rear Panel

Euro AV (schwarz/black)

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

Netzteil / Mains Stage

Netzspannung (Regelbereich)

Mains voltage (variable)

165 …265V

Netzfrequenz

Mains frequency

50 / 60Hz

Leistungsaufnahme

Power consumption

ca. 38W

ca. 50W

Standby

ca. 9W

ca. 10W

T 51-071

T 51-720 text

T 51-720 text GB

T 51-731 text

T 51-732/5 text

T 55-731 text

T 55-731 text GB

T 55-732/5 text

T 55-733/5 text

Bildröhre / Picture Tube

Sichtbares Bild

Visible picture

48cm

51cm

Bildschirmdiagonale

Screen diagonale

51cm (20")

Black Matrix

small neck

51cm (20")

Black Matrix

small neck

51cm (20")

Black Matrix

small neck

51cm (20")

Black Matrix

small neck

51cm (20")

Black Matrix

small neck

55cm (21")

Black Matrix

small neck

55cm (21")

Black Matrix

small neck

55cm (21")

Black Matrix

small neck

51cm (20")

Black Matrix

small neck

Ablenkwinkel

Deflection angle

90 °

Bildwechselfrequenz

Vertical frequency

50Hz

Elektronik / Electronic

Programmspeicherplätze

Programme positions

69 TV + 1 AV

AV-Auswertung

AV evaluation

auf jeden Programmplatz programmierbar / programmable for every programme position

Kabeltuner für Hyperband (8MHz)

Cable tuner for hyperband (8MHz)

ja/

yes

ja/

yes

nur UHF/

UHF only

ja/

yes

ja/

yes

ja/

yes

nur UHF/

UHF only

ja/

yes

ja/

yes

TV-Normen

TV standards

PAL/

B/G

PAL/

B/G

PAL/

B/G

PAL, SECAM,

NTSC 4.43MHz

B/G, D/K/K'

PAL/

B/G

PAL/

PAL, SECAM,

NTSC 4.43MHz

B/G, D/K/K'

PAL, SECAM,

NTSC 4.43MHz

B/G, D/K/K'

Videotext

Teletext

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

1-Seiten Text

1-pages text

Musikleistung

Music power

Anschlüsse Rückwand / Connections Rear Panel

Euro AV (schwarz/black)

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

voll belegt

fully wired

Netzteil / Mains Stage

Netzspannung (Regelbereich)

Mains voltage (variable)

165 …265V

Netzfrequenz

Mains frequency

50 / 60Hz

Leistungsaufnahme

Power consumption

ca. 55W

Standby

ca. 10W

CUC 7303

Allgemeiner Teil / General Section

Modulübersicht / Module List

Gerät

Unit

Chassis

Tuner

BR-Platte

CRT Panel

Prozessorplatte

Processor Board

Fernbedienung

Remote Control

P 37-066/5

29704-002.24

8140-601-610

29305-022.14

29305-119.28

29642-062.01

P 37-071

29704-002.21

8140-601-610

29305-022.14

29305-119.28

29642-062.01

P 37-071 GB

29704-002.22

8140-601-611

29305-022.14

29305-119.28

29642-062.01

P 37-731 text

29704-002.05/.06

8140-601-610

29305-022.14

29305-119.28

29642-062.01

P 37-731 text GB

29704-002.08/.09

8140-601-611

29305-022.14

29305-119.28

29642-062.01

P 45-731 text

29704-002.01

8140-601-610

29305-022.15

29305-119.28

29642-062.01

T 51-071

29704-002.12

8140-601-610

29305-022.16

29305-119.28

29642-062.01

T 51-720 text

29704-002.04

8140-601-610

29305-022.16

29305-119.28

29642-062.01

T 51-720 text GB

29704-002.03

8140-601-611

29305-022.16

29305-119.28

29642-062.01

T 51-731 text

29704-002.04

8140-601-610

29305-022.16

29305-119.28

29642-062.01

T 51-732/5 text

29704-002.14

8140-601-610

29305-022.16

29305-119.30

29642-063.01

T 55-731 text

29704-002.07

8140-601-610

29305-022.16

29305-119.28

29642-062.01

T 55-731 FT/GB

29704-002.18

8140-601-611

29305-022.16

29305-119.28

29642-062.01

T 55-732/5 text

29704-002.16

8140-601-610

29305-022.16

29305-119.28

29642-062.01

T 55-733/5 text

29704-002.17

8140-601-610

29305-022.16

29305-119.28

29642-062.01

Sicherheits-Hinweis

Die in den Fernsehgeräten auftretende Röntgenstrahlung entspricht

den Bestimmungen der Physikalisch-Technischen Bundesanstalt

vom 8. Januar 1987.

Die Hochspannung für die Bildröhre und die damit auftretende

Röntgenstrahlung ist abhängig von der exakten Einstellung der

Netzteilspannung +A.

Nach jeder Reparatur im Netzteil oder in der Horizontalablenkung ist

die Hochspannung zu messen und ggf. einzustellen.

Schutzschaltungen im Gerät dürfen nur kurzzeitig außer Betrieb

gesetzt werden, um Folgeschäden am Chassis oder an der Bildröh-

re zu vermeiden.

Beim Austausch der Bildröhre dürfen nur die in den Ersatzteillisten

vorgeschriebenen Typen verwendet werden.

Safety Advice

The X-radiation developing in the sets conforms to the X-radiation

Regulations (January 8, 1987), issued by the Physikalisch-Techni-

sche Bundesanstalt (federal physiotechnical institution).

The high tension for the picture tube and thus the developing X-

radiation depends on the precise adjustment of the +A power supply.

After every repair of the power supply unit or the horizontal deflection

stage it is imperative that the EHT for the picture tube is checked and

re-adjusted if necessary.

To avoid consequential damages to the chassis or the picture tube

the integrated protective circuits are allowed to be put out of

operation only for a short time.

When replacing the picture tube use only the types specified in the

spare parts lists.

Hinweise zu den Bauteilen / Hints to Components / Istruzioni sui Componenti /

Observaciones sobre los Componentes / Precautions a observer

Metallschichtwiderstände

Metal film resistors

Resistenza a strato metallico

Resistencia de capa metálica

Film métallique

SI-R

Sicherungswiderstand

Fuse resistor

Resistenza di sicurezza

Resistencia con resorte de seguridad

Rés. fusible

Drahtwiderstand m. Wattangabe

Wire wound resistor w. wattage

Resistenza a filo

Resistencia bobinada (Disipación)

Bobinée avec ind. puissance

Heißleiter / NTC resistor

Termistore NTC / Resistencia CNT

Varistor (CTN)

Kaltleiter / PTC resistor

Termistore PTC / Resistencia CPT

Varistor (CTP)

Kondensator, Capacitor

Condensatore, Condensador

Condensador, 630 V=

SI-R

Elektrolytkondensator

Electrolytic capacitor

Condensatore elettrolitico

Condensador electrolitico

Electrolytique

DIN 0204

DIN 0207

DIN 0414

Kohleschichtwiderstände

Carbon film resistors

Resistenza a strato di carbone

Resistencia de capa de carbón

Film carbonique

NTC

T +

Tantal-Elektrolytkondensator

Tantalum electrolytic capacitor

Condensatore elettro. al tantalio

Condensador de tantalio

Tantale

bipolarer Elektrolytkondensator

bipolar electrolytic capacitor

Condensatore elettrolitico bipolare

Condensador electrolitico bipolar

Electrolytique bipolaisé

DIN 0204

DIN 0207

DIN 0414

DIN 0617

PTC

Metalloxidwiderstand

Metal oxid resistor

Resistenza ad ossido metallico

Resistencia de óxido metálico

Métaloxide

Schwer entflammbarer Widerstand

Flame resistant resistor

Resistenza anti-infiammabile

Resistencia ininflamable

Ininflammable

Keramikkondensator

Ceramic capacitor

Condensatore ceramico

Condensador cerámico

Céramique

Kondensator, Capacitor

Condensatore, Condensador

Condensador, 250 V=

Kondensator, Capacitor

Condensatore, Condensador

Condensador, 400 V=

Kondensator, Capacitor

Condensatore, Condensador

Condensador, 1000 V=

GRUNDIG Service

1 - 5

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