Table Of Contents - Hitachi HA-7700 Service Manual

Table of Contents

Specifications1
Features4
Disassembly And Replacement6
Removing The Cover6
Removing The Printed Wiring Boards6
Service Points7
Removing The Power Mos Fet7
Adjustment8
Parts Installation Method8
Precautions8
Checking The Operation Of The Protection Circuit9
Adjusting The Output Dc9
Adjusting The Equalizer Output Dc9
Method Of Checking The Power Mos Fet10
Phenomena And Remedy When The Protection Circuit Operates10
Block Diagram11
Primary Circuit Diagram11
Printed Wiring Boards13
Main Amp P.w.b.13
Pre Amp. P.w.b.14
Circuit Diagram17
Product Safety Note17
Points De Service20
Replacement Parts List25
Main Printed Wiring Board26
Front Panel29
Rear Panel30