Sony 454XRF Manuals

Table of Contents

• • 2

    Table of Contents

• 3

  1 Servicing Notes

• 4

  2 General

  • 4

    Location of Controls
  • 5

    Installation
  • 7

    Connections

• 8

  3 Disassembly

  • 8

    Disassembly Flow
  • 9

    Case (Upper. T), Front Panel Assy
  • 9

    Mechanism Deck (MG-251A-137)
  • 10

    FM Board
  • 10

    MAIN Board, Slide Variable Resistor (Elevator Height Sensor) (RV202)
  • 11

    ELJ Motor Assy (Elevator) (M104)
  • 11

    Escutcheon (T)
  • 12

    Chassis (U.S) Sub Assy
  • 12

    Chassis Assy
  • 13

    3-10. Rf Board
  • 13

    Sled Motor Assy (251) (M101), Optical Pick-up (KSS-720A)
  • 14

    LSW Board, Spindle Motor (S) Sub Assy (M102)
  • 14

    ELJ Motor Assy (Chucking) (M103)

• 15

  4 Assembly

  • 15

    Optical Pick-up Complete Assy
  • 16

    Gear (Lomini)/(load 1) Assy
  • 16

    Operation Check

• 17

  5 Mechanical Adjustments

• 18

  6 Electrical Check

• 21

  7 Diagrams

  • 21

    Block Diagram - SERVO Section
  • 22

    Block Diagram - MAIN Section
  • 23

    Note for Printed Wiring Boards and Schematic Diagrams
  • 24

    Printed Wiring Boards - RF/LSW Boards
  • 25

    7-5. SCHEMATIC DIAGRAM - RF/LSW Boards
  • 26

    Printed Wiring Board - MAIN Board (Component Side)
  • 27

    Printed Wiring Boards - MAIN (Conductor Side)/SW Boards
  • 28

    Schematic Diagram - MAIN Board (1/2)
  • 29

    Schematic Diagram - MAIN (2/2)/SW Boards
  • 30

    7-10. PRINTED WIRING BOARD - FM Board
  • 31

    Schematic Diagram - FM Board
  • 36

    7-12. IC Pin Function Description

• 38

  8 Exploded Views

  • 38

    General Section-1
  • 39

    General Section-2
  • 40

    Mechanism Deck Section-1 (MG-251A-137)
  • 41

    Mechanism Deck Section-2 (MG-251A-137)
  • 42

    Mechanism Deck Section-3 (MG-251A-137)
  • 43

    Mechanism Deck Section-4 (MG-251A-137)

• 44

  9 Electrical Parts List

  • 50

    Revision History