1 - 2
GRUNDIG Servicetechnik
Allgemeiner Teil / General
GV470S…
GB
Table of Contents
Page
General ................................................. 1-1…1-74
Video Recorder Overview ................................................................ 1-3
Test Equipment / Jigs ...................................................................... 1-4
Specifications ................................................................................... 1-4
Operating Elements ....................................................................... 1-36
Service Instructions ........................................................................ 1-67
Service Test Programme and Special Functions ........................... 1-71
Descriptions .......................................... 2-1…2-22
Principles of S-VHS (Super VHS) .................................................... 2-1
Power Supply (PS) ........................................................................... 2-3
Family Board .................................................................................... 2-4
• Sequence Control / Deckelectronic (DE) ...................................... 2-4
• Teletext "DOS" (VT) ...................................................................... 2-8
• Frontend (FE) ................................................................................ 2-9
• IN/OUT (IO) ................................................................................. 2-10
• FM Sound (AF) ........................................................................... 2-12
• Standard Sound / Audio Linear (AL) ........................................... 2-13
S-VHS Board ................................................................................. 2-14
• Luminance (SH) .......................................................................... 2-14
• Chrominance (SF) ....................................................................... 2-16
Archives Board (AR) ...................................................................... 2-18
NICAM Decoder (NI) ...................................................................... 2-18
Keyboard Control Units (DC) ......................................................... 2-19
Adjustment Procedures ....................... 3-6…3-10
Power Supply (PS) ........................................................................... 3-6
Family Board .................................................................................... 3-6
• Sequence Control / Deckelectronic (DE) ...................................... 3-6
• Teletext "DOS" (VT) ...................................................................... 3-7
• Frontend (FE) ................................................................................ 3-7
• FM-Sound (AF) ............................................................................. 3-8
• Standard Sound / Audio Linear (AL) ............................................. 3-8
S-VHS Board ................................................................................... 3-9
• Luminance (SH) ............................................................................ 3-9
• Chrominance (SF) ....................................................................... 3-10
Layout of the P.C.B.
and Circuit Diagrams .......................... 4-1…4-48
Note on the Components / Circuit Diagram Symbols ...................... 4-1
Wiring Diagram ................................................................................ 4-6
Block Circuit Diagrams (Analog / Digital) ......................................... 4-8
Power Supply (PS) ......................................................................... 4-11
Tape Deck Sensor Panel ............................................................... 4-19
Family Board .................................................................................. 4-13
• Sequence Control / Deckelectronic (DE) .................................... 4-16
• Frontend (FE) .............................................................................. 4-18
• IN/OUT (IO) ................................................................................. 4-20
• FM Sound (AF) ........................................................................... 4-22
• Standard Sound / Audio Linear (AL) ........................................... 4-24
• Teletext "DOS" (VT) / VPS (VP) ................................................. 4-25
Archives Board (AR) ...................................................................... 4-26
S-VHS Board ................................................................................. 4-28
• Luminance (SH) .......................................................................... 4-30
• Chrominance (SF) ....................................................................... 4-32
NICAM Decoder (NI) ...................................................................... 4-34
Head Amplifier (HV/HA) ................................................................. 4-36
Keyboard Control Unit I (DC) ......................................................... 4-38
Keyboard Control Unit II (DC) ........................................................ 4-40
Keyboard Control Unit II (DC) ........................................................ 4-42
Remote Control RP35 .................................................................... 4-43
Tuner .............................................................................................. 4-44
Oscillograms .................................................................................. 4-45
Drive Mechanism ................................. 5-1…5-12
Exploded Views and
Spare Parts List ................................... 6-1…6-43
D
Inhaltsverzeichnis
Seite
Allgemeiner Teil ................................... 1-1…1-74
Geräteübersicht ............................................................................... 1-3
Meßgeräte / Meßmittel ..................................................................... 1-4
Technische Daten ............................................................................ 1-4
Bedienelemente ............................................................................... 1-5
Servicehinweise ............................................................................. 1-67
Servicetestprogramm und Sonderfunktionen ................................. 1-71
Beschreibungen .................................... 2-1…2-22
Prinzip des S-VHS (Super-VHS) ...................................................... 2-1
Netzteil (PS) ..................................................................................... 2-3
Chassisplatte ................................................................................... 2-4
• Ablaufsteuerung / Deckelektronik (DE) ......................................... 2-4
• Teletext "DOS" (VT) ...................................................................... 2-8
• Empfangseinheit (FE) ................................................................... 2-9
• IN/OUT (IO) ................................................................................. 2-10
• FM-Ton (AF) ............................................................................... 2-12
• Standardton / Audio Linear (AL) ................................................. 2-13
S-VHS-Platte .................................................................................. 2-14
• Luminanz (SH) ............................................................................ 2-14
• Chrominanz (SF) ......................................................................... 2-16
Archivplatte (AR) ............................................................................ 2-18
NICAM-Decoder (NI) ...................................................................... 2-18
Bedieneinheiten (DC) ..................................................................... 2-19
Abgleich .................................................. 3-1…3-5
Netzteil (PS) ..................................................................................... 3-1
Chassisplatte ................................................................................... 3-1
• Ablaufsteuerung / Deckelektronik (DE) ......................................... 3-1
• Teletext "DOS" (VT) ...................................................................... 3-2
• Empfangseinheit (FE) ................................................................... 3-2
• FM-Ton (AF) ................................................................................. 3-3
• Standardton / Audio Linear (AL) ................................................... 3-3
S-VHS-Platte .................................................................................... 3-4
• Luminanz (SH) .............................................................................. 3-4
• Chrominanz (SF) ........................................................................... 3-5
Platinenabbildungen
und Schaltpläne ................................... 4-1…4-48
Hinweise zu den Bauteilen / Schaltplansymbole ............................. 4-1
Verdrahtungsplan ............................................................................. 4-6
Blockschaltpläne (Analog / Digital) .................................................. 4-8
Netzteil (PS) ................................................................................... 4-11
Laufwerkplatte – Sensoreneinheit .................................................. 4-19
Chassisplatte ................................................................................. 4-13
• Ablaufsteuerung / Deckelektronik (DE) ....................................... 4-16
• Empfangseinheit (FE) ................................................................. 4-18
• IN/OUT (IO) ................................................................................. 4-20
• FM-Ton (AF) ............................................................................... 4-22
• Standardton / Audio Linear (AL) ................................................. 4-24
• Teletext "DOS" (VT) / VPS (VP) ................................................. 4-25
Archivplatte (AR) ............................................................................ 4-26
S-VHS-Platte .................................................................................. 4-28
• Luminanz (SH) ............................................................................ 4-30
• Chrominanz (SF) ......................................................................... 4-32
NICAM-Decoder (NI) ...................................................................... 4-34
Kopfverstärker (HV/HA) ................................................................. 4-36
Bedieneinheit I (DC) ....................................................................... 4-38
Bedieneinheit II (DC) ...................................................................... 4-40
Bedieneinheit III (DC) ..................................................................... 4-42
Fernbedienung RP35 ..................................................................... 4-43
Tuner .............................................................................................. 4-44
Oszillogramme ............................................................................... 4-45
Laufwerk .............................................. 5-1…5-12
Explosionszeichnungen
und Ersatzteilliste ................................ 6-1…6-43