Hitachi HA-7700 Manuals

Hitachi HA-7700 Manuals

Manuals and User Guides for Hitachi HA-7700. We have 2 Hitachi HA-7700 manuals available for free PDF download: Service Manual

Hitachi HA-7700 Service Manual

Hitachi HA-7700 Service Manual (31 pages)

Brand: Hitachi | Category: Amplifier | Size: 2.25 MB

Table of Contents

Specifications
1
Features
4
Disassembly and Replacement
6
Removing the Cover
6
Removing the Printed Wiring Boards
6
Service Points
7
Removing the Power MOS FET
7
Adjustment
8
Parts Installation Method
8
Precautions
8
Checking the Operation of the Protection Circuit
9
Adjusting the Output DC
9
Adjusting the Equalizer Output DC
9
Method of Checking the Power MOS FET
10
Phenomena and Remedy When the Protection Circuit Operates
10
Block Diagram
11
Primary Circuit Diagram
11
Printed Wiring Boards
13
Main Amp P.w.b.
13
Pre Amp. P.W.B.
14
Circuit Diagram
17
Product Safety Note
17
Points de Service
20
Replacement Parts List
25
Main Printed Wiring Board
26
Front Panel
29
Rear Panel
30

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Hitachi HA-7700 Service Manual

Hitachi HA-7700 Service Manual (25 pages)

Brand: Hitachi | Category: Amplifier | Size: 4.35 MB

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