Hitachi HMA-7500 Manuals

Table of Contents

• 1

  Specifications
• 2

  Disassembly and Replacement
• 3

  Service Points
• 3

  Adjustment
• 3

  Removing the Printed Wiring Boards
• 4

  Checking the Operation of the Protection Circuit
• 4

  Troubleshooting
• 4

  Features
• 4

  Appearance Check
• 7

  Printed Wiring Board
• 8

  Audio
• 9

  Circuit Diagram
• 11

  Block Diagram
• 14

  Front and Rear Panel
• 14

  Replacement Parts
• 17

  Safety Precautions
• 18

  Description of the New Circuit
• 19

  Dual Servo Circuit
• 19

  BTL Switch
• 19

  Protection Indicator