Sony bg2t chassis kv-ha21m80, ha21n70, ha21n80 User Manuals

Table of Contents

• REVISION HISTORY

  1
• KV-HA21M80/N70/N80

  2
• SPECIFICATIONS

  3
• TABLE OF CONTENTS

  4
• SELF DIAGNOSTIC FUNCTION

  5
• GENERAL

  8
• DISASSEMBLY

  13
  • REAR COVER REMOVAL

    13
  • SPEAKER REMOVAL

    13
  • CHASSIS ASSY REMOVAL

    13
  • SERVICE POSITION

    13
  • TERMINAL BRACKET REMOVAL

    13
  • REPLACEMENT OF PARTS

    13
    • Replacement of Light Guide

      13
    • Replacement of Power Button

      13
  • PICTURE TUBE REMOVAL

    14
  • REMOVAL OF ANODE-CAP

    14
• SET-UP ADJUSTMENTS

  15
  • BEAM LANDING

    15
  • CONVERGENCE

    16
  • FOCUS ADJUSTMENT

    18
  • G2 (SCREEN) AND WHITE BALANCE ADJUSTMENTS

    18
• CIRCUIT ADJUSTMENTS

  19
  • ADJUSTMENT WITH COMMANDER

    19
  • ADJUSTMENT METHOD

    19
  • PICTURE QUALITY ADJUSTMENT

    29
  • DEFLECTION ADJUSTMENT

    29
  • A BOARD ADJUSTMENT AFTER IC003 (MEMORY) REPLACEMENT

    29
  • PICTURE DISTORTION ADJUSTMENT

    30
• DIAGRAMS

  31
  • BLOCK DIAGRAM

    31
  • CIRCUIT BOARDS LOCATION

    32
  • SCHEMATIC DIAGRAM

    33
    • A Board Schematic Diagram

      34
    • CV Board Schematic Diagram

      35
  • VOLTAGE MEASUREMENTS

    39
    • A BOARD VOLTAGE LIST

      39
    • CV BOARD VOLTAGE LIST

      41
  • WAVEFORMS

    42
    • A BOARD WAVEFORM

      42
    • CV BOARD WAVEFORM

      42
  • PRINTED WIRING BOARDS AND PARTS LOCATION

    43
    • – CV Board –

      43
    • – A Board –

      44
  • SEMICONDUCTORS

    45
• EXPLODED VIEWS

  47
  • PICTURE TUBE AND CHASSIS

    47
• ELECTRICAL PARTS LIST

  48