User Manuals: JVC SR-VS20E Mini DV/S-VHS VCR

Manuals and User Guides for JVC SR-VS20E Mini DV/S-VHS VCR. We have 1 JVC SR-VS20E Mini DV/S-VHS VCR manual available for free PDF download: Service Manual

JVC SR-VS20E Service Manual

JVC SR-VS20E Service Manual (149 pages)

Mini DV/S-VHS VIDEO CASSETTE RECORDER

Brand: JVC | Category: VCR | Size: 11.36 MB

Table of Contents

Table of Contents
2
Important Safety Precautions

3
- Safety Check after Servicing
  4
1 Disassembly

6
2 Mechanism Adjustment (Vhs)

22
Mechanism Adjustment (DV)

42
- Preparation
  42
- Disassembly/Assembly of the Mechanism Assembly
  43
  - Introduction
    43
  - Mechanism Modes
    43
- Mechanism Timing Chart
  45
- Mechanism Assembly/Disassembly Procedure Table
  46
- Disassembly/Assembly
  48
- List of Procedures for Disassembly
  56
- Mechanism Disassembly/Assembly Sheet
  57
- Mechanism Phase Check/Adjustment
  59
  - Positioning the Tension Pole
    60
- Compatibility and Error Rate Adjustments
  61
  - Preparation
    61
  - Adjustment
    61
  - Linearity Adjustment
    62
  - PB Switching Point Adjustment
    62
  - Error Rate Adjustment
    62
  - Error Rate Measuring Method
    62
- Tape Ejection
  63
3 Electrical Adjustment (Vhs)

64
- Precaution
  64
- Servo Circuit
  65
  - Switching Point
    65
  - Slow Tracking Preset
    65
- Video Circuit
  65
  - D/A Level
    65
  - EE y Level
    66
  - PB y Level (S-VHS / VHS)
    66
  - REC Color (Colour) Level
    66
  - Video EQ (Frequency Response)
    67
  - AUTO PICTURE Initial Setting
    67
  - DV EE y Level
    67
- Audio Circuit
  68
  - Audio REC FM
    68
- Syscon Circuit [Sr-Vs20E]
  68
  - Timer Clock
    68
Electrical Adjustment (DV)

69
- Preparation
  69
  - Precautions
    69
  - Equipment Required for Adjustment
    69
  - Tools Required for Adjustments
    69
  - Setup
    69
4 Charts and Diagrams

70
- Notes of Schematic Diagram
  70
- Circuit Board Notes
  71
- Board Interconnections
  72
- Switching Regulator and Regulator Schematic Diagrams
  73
- Video/Audio Schematic Diagram
  74
- System Control Schematic Diagram
  75
- Sub Cpu Schematic Diagram
  77
- Tuner Schematic Diagram
  78
- Video I/O Switch Schematic Diagram
  79
- Audio I/O Schematic Diagram
  80
- Connection Schematic Diagram
  81
- Digital/2M Schematic Diagram
  82
- Terminal Schematic Diagram
  83
- Demodulator Schematic Diagram
  84
- S-Sub Schematic Diagram
  85
- Mda Schematic Diagram
  86
- Pre/Rec Schematic Diagram
  87
- On Screen Schematic Diagram
  88
- Display, Eject Sw, Led/Sw, Jack and Jog Schematic Diagrams
  89
- DV System Control Schematic Diagram
  90
- DV Msd Schematic Diagram
  91
- DV Main Schematic Diagram
  92
- DV I/O Schematic Diagram
  93
- DV V out Schematic Diagram
  94
- Audio Ad/Da Schematic Diagram
  95
- DV Dsp Schematic Diagram
  96
- Switching Regulator and Regulator Circuit Boards
  97
- Digital/2M and S-Sub Circuit Boards
  98
- Terminal Circuit Board
  99
- Main Circuit Board
  101
- Demodulator and on Screen Circuit Boards
  102
- DV Main Circuit Board
  103
- Fdp Grid Assignment and Anode Connection
  107
- Remote Control Schematic Diagram
  107
- Waveforms
  108
- Voltage Charts
  109
- Cpu Pin Function
  111
- System Control Block Diagram (Vhs)
  112
- Video Block Diagram(Vhs)
  113
- Audio Block Diagram (Vhs)
  115
- System Control Block Diagram (DV)
  116
- Video Block Diagram (DV)
  117
5 Parts List

118
- Final Assembly M2
  119
- Mechanism Assembly (Vhs) <M3
  121
- Mechanism Assembly (DV) <M4
  123
- Electrical Parts List
  125
  - Sw Regulator Board Assembly <01
    125
  - Regulator Board Assembly <02
    126
  - Main Board Assembly <03
    127
  - Digital/2M Board Assembly <05
    135
  - Terminal Board Assembly <06
    136
  - Audio Control Head Board Assembly <12
    138
  - Demod Board Assembly <14
    138
  - S-Sub Board Assembly <15
    139
  - DV Pre/Rec Mda Board Assembly <16
    140
  - On Screen Board Assembly <17
    141
  - Eject Sw Board Assembly <27
    142
  - Sw/Display Board Assembly <28
    142
  - Jack Board Assembly <36
    143
  - Led/Sw Board Assembly <47
    143
  - DV Main Board Assembly <50
    143
  - Loading Motor Board Assembly <55
    149
  - Jog Board Assembly <85
    149

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