Allgemeiner Teil / General Section CUC 7305
1 - 2 GRUNDIG Service
Es gelten die Vorschriften und Sicherheitshin-
weise gemäß dem Service Manual "Sicherheit",
Sach-Nummer 72010-800.00, sowie zusätzlich
dieeventuellabweichenden,landesspezifischen
Vorschriften!
The regulations and safety instructions shall be
validasprovidedbythe"Safety"ServiceManual,
part number 72010-800.00, as well as the
respective national deviations.
Table of Contents
Page
General Section.................................1-1... 1-14
Technical Data.............................................................................1-3
Module List...................................................................................1-4
Safety Advice...............................................................................1-4
Hints to the Components.............................................................1-4
Hints to the Oscillograms.............................................................1-5
Circuit Diagram Symbols.............................................................1-6
Service Instructions (P 37-731/12 text)........................................1-9
Special and Service Functions...................................................1-12
Block Circuit Diagram................................................................1-13
Descriptions......................................2-8... 2-14
1. 12V Switched Mode Power Supply..........................................2-8
1.1. Power Supply........................................................................2-9
2. System Control......................................................................2-10
3.TV Signal Processor TDA 8362 A..........................................2-11
3.1 Overview.......................................................................2-11
3.2 IF...................................................................................2-11
3.3 CCVS-Signal.................................................................2-11
3.4 External CCVS Signal...................................................2-11
3.5 Sound IF........................................................................2-12
3.6 Luminance and Chrominance Signal............................2-12
3.7 SECAM Signal Path
and Automatic PAL/SECAM Switching.........................2-12
3.8 RGB Signal Path...........................................................2-13
3.9 Generation of the Horizontal and Vertical Sync Signals2-13
3.10Line Oscillator................................................................2-13
3.11ϕ1-Phase Control..........................................................2-13
3.12ϕ2-Phase Control..........................................................2-13
3.13The Super Sandcastle SSC..........................................2-14
3.14Setting of the Cut-Off Voltage.......................................2-14
3.15HDR Output Stage........................................................2-14
3.16Field Deflection Stage...................................................2-14
3.17Non-Interlace Compensation with Teletext...................2-14
3.18Coincidence..................................................................2-14
Adjustments.................................................3-2
Layout of the PCBs
and Circuit Diagrams........................4-1... 4-20
Chassis Board..............................................................................4-1
Oscillograms................................................................................4-7
General Circuit Diagram..............................................................4-9
Processing Board 29305-119.30...............................................4-14
CRT Panel 29305-022.14/.15....................................................4-15
12V Power Supply 29305-007.31.............................................4-17
Spare Parts List...................................5-1... 5-4
GB
D
Inhaltsverzeichnis
Seite
Allgemeiner Teil................................1-1... 1-14
Technische Daten........................................................................1-3
Modulübersicht.............................................................................1-4
Sicherheitshinweise.....................................................................1-4
Hinweise zu den Bauteilen...........................................................1-4
Hinweise zu den Oszillogrammen................................................1-5
Schaltplansymbole.......................................................................1-6
Bedienungsanleitung (P 37-731/12 text)......................................1-7
Sonder- und Servicefunktionen..................................................1-11
Blockschaltbild...........................................................................1-13
Beschreibungen..................................2-1... 2-7
1.12V Schaltnetzteil.....................................................................2-1
1.1. Netzteil..................................................................................2-2
2. Systemsteuerung.....................................................................2-3
3.TV-Signalprozessor TDA 8362 A..............................................2-4
3.1 Übersicht............................................................................2-4
3.2 ZF.......................................................................................2-4
3.3 FBAS-Signal.......................................................................2-4
3.4 Externes FBAS-Signal.......................................................2-4
3.5 Ton-ZF...............................................................................2-5
3.6 Luminanz- und Chrominanzsignal......................................2-5
3.7 SECAM-Signalweg
und automatische PAL/SECAM-Umschaltung...................2-5
3.8 RGB-Signalweg..................................................................2-6
3.9 Gewinnung der H- und V-Synchronsignale........................2-6
3.10 Zeilenoszillator.................................................................2-6
3.11 ϕ1-Regelung...................................................................2-6
3.12. ϕ2-Regelung...................................................................2-6
3.13. Supersandcastle SSC.....................................................2-7
3.14 Cut-Off-Einstellung...........................................................2-7
3.15 HDR-Endstufe..................................................................2-7
3.16 Vertikal-Ablenkung...........................................................2-7
3.17 Non-Interlace Kompensation bei Videotext......................2-7
3.18 Koinzidenz........................................................................2-7
Abgleich........................................................3-1
Platinenabbildungen
und Schaltpläne................................4-1... 4-20
Chassisplatte...............................................................................4-1
Oszillogramme.............................................................................4-7
Gesamtschaltplan........................................................................4-9
Prozessorplatte 29305-119.30...................................................4-14
Bildrohrplatte 29305-022.14/.15.................................................4-15
12V Netzteil 29305-007.31........................................................4-17
Ersatzteilliste.......................................5-1... 5-4
