Allgemeiner Teil / General Section CUC 7303
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...................................................................................1-5
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
GB
D
Inhaltsverzeichnis
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 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
