Sony bg2t chassis kv-pg21n70, pg21p42, User Manuals

Table of Contents

• REVISION HISTORY

  1
• KV-PG21N70

  2
• SPECIFICATIONS

  3
• TABLE OF CONTENTS

  4
• SELF DIAGNOSTIC FUNCTION

  5
• GENERAL

  8
• DISASSEMBLY

  14
  • 2-1 REAR COVER REMOVAL

    14
  • 2-2 SPEAKER REMOVAL

    14
  • 2-3 CHASSIS ASSY REMOVAL

    14
  • 2-4 SERVICE POSITION

    14
  • 2-5 TERMINAL BRACKET REMOVAL

    14
  • 2-6 REPLACEMENT OF PARTS

    14
    • 2-6-1 Replacement of Light Guide

      14
    • 2-6-2 Replacement of Power Button

      14
  • 2-7 PICTURE TUBE REMOVAL

    15
  • REMOVAL OF ANODE-CAP

    15
• SET-UP ADJUSTMENTS

  16
  • 3-1. BEAM LANDING

    16
  • 3-2. CONVERGENCE

    17
  • 3-3. FOCUS ADJUSTMENT

    19
  • 3-4. G2 (SCREEN) AND WHITE BALANCE ADJUSTMENTS

    19
• CIRCUIT ADJUSTMENTS

  20
  • 4-1. ADJUSTMENT WITH COMMANDER

    20
  • 4-2. ADJUSTMENT METHOD

    20
  • 4-3. PICTURE QUALITY ADJUSTMENT

    27
  • 4-4. DEFLECTION ADJUSTMENT

    27
  • 4-5. A BOARD ADJUSTMENT AFTER IC003 (MEMORY) REPLACEMENT

    27
  • 4-6. PICTURE DISTORTION ADJUSTMENT

    28
• DIAGRAMS

  30
  • 5-1. BLOCK DIAGRAM

    30
  • 5-2. CIRCUIT BOARDS LOCATION

    31
  • 5-3. SCHEMATIC DIAGRAM

    31
    • (1) Schematic Diagram of A Board

      32
    • (2) Schematic Diagrams of CV and F Boards

      33
  • 5-4. VOLTAGE MEASUREMENT

    37
    • A BOARD VOLTAGE LIST

      37
    • CV BOARD VOLTAGE LIST

      39
  • 5-5. WAVEFORMS

    39
    • A BOARD WAVEFORM

      39
    • CV BOARD WAVEFORM

      39
  • 5-6. PRINTED WIRING BOARDS AND PARTS LOCATION

    40
    • – A Board –

      40
    • – CV Board –

      41
    • – F Board – (KV-PG21N70) (TAIWAN ONLY)

      41
  • 5-7. SEMICONDUCTORS

    41
• EXPLODED VIEWS

  43
  • 6-1. PICTURE TUBE AND CHASSIS

    43
• ELECTRICAL PARTS LIST

  44