Table Of Contents - Grundig CUC 7303 Service Manual

Allgemeiner Teil / General Section
Es gelten die Vorschriften und Sicherheitshin-
weise gemäß dem Service Manual "Sicherheit",
Sach-Nummer 72010-800.00, sowie zusätzlich
die eventuell abweichenden, landesspezifischen
Vorschriften!
D
Inhaltsverzeichnis
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 ϕ1-Regelung ................................................................... 2-5
3.12. ϕ2-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
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.
GB

Table of Contents

Seite
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 ϕ1-Phase Control .......................................................... 2-11
3.12. ϕ2-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
CUC 7303
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