Pioneer SA-7800 Service Manual - Page 30

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Pioneer SA-7800 Service Manual

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Table of Contents

Table Of Model Sa-7800 Versions3

Specifications4

Front Panel Facilities5

Basic Circuit Of Equalizer Amplifier7

Power Amplifier8

Basic Circuit Of Power/Tone Amplifier8

Normal Class B Sepp Power Stage9

Outline Of Nsa Circuit9

Driving Signal Of Power Stage9

Indicator Circuit10

Protection Circuit11

Muting Operation When Power Supply Is Turned On And Off11

Overload/Dc Voltage Detector11

Idle Current Adjustment12

Output Indicator Adjustment12

Parts Location: Front Panel View14

Parts Location: Front View With Front Panel Removed14

Parts Location: Top View With Top Cover Removed15

Parts Location: Rear Panel View15

Exploded View16

Miscellaneous Parts18

Schematic Diagram: External Appearance Of Transistors And Ics19

Equalizer Assembly And Parts List21

Tone Amplifier Assembly And Parts List22

Terminal/Volume/Switch Assembly And Parts Lists23

Power Amplifier Assembly24

Parts List Of Power Amplifier Assembly25

Phone Jack Assembly25

Indicator Assembly26

Parts List Of Indicator Assembly27

Switch Assembly 2 And Parts List27

Power Supply Assembly And Parts List28

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