Hitachi HA-3700 Manuals

Table of Contents

• 1

  Specifications
• 1

  Features
• 3

  Disassembly and Replacement
• 4

  Construction of Power Bus
• 4

  Method of Exchange the S401
• 5

  Idle Current Adjustment
• 5

  Output DC Adjustment
• 5

  Checking the Super Linear Circuit
• 5

  Cautions on Repairing and Replacing Parts
• 8

  Description of the New Circuit
• 8

  Super Linear Circuit
• 8

  LED Power Meter Drive Circuit
• 8

  Equalizer Amp. Circuit
• 11

  Printed Wiring Board
• 12

  The Circuit Symbol
• 13

  Circuit Diagram
• 19

  Block Diagram
• 21

  Checking the Operation of the Protection Circuit
• 24

  Front and Rear Panel
• 26

  Replacement Parts List