Pioneer SPEC-4 Panduan Servis - Halaman 38

Jelajahi secara online atau unduh pdf Panduan Servis untuk Penguat Pioneer SPEC-4. Pioneer SPEC-4 38 halaman. Stereo power amp

Pioneer SPEC-4 Panduan Servis

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Table of Contents

Model Spec 4 Comes In Two Versions Distinguished As Follows2

Specifications3

Front Panel Facilities4

Hexagonal Wrench4

Connection Diagram5

Circuit Description7

Meter Amplifier7

Power Amplifier Circuit7

Protection Circuit8

Relay Driver Circuit8

Meter Amplifier Circuit8

Frequency Response Of The Peak Meter8

Muting Operation9

Operation By Detector Circuit Command9

Overload Detector Circuit9

Center Point Potential Detector Circuit9

Center Point Potential Detector10

Power Supply Circuit10

Surge Current Countermeasures10

Parts Location12

Front Panel View12

Front View With Panel Removed12

Rear Panel View14

Power Amplifier15

Dc Balance/Idle Current/Power Limiter Adjustment15

Connection Diagram For Power Limiter Adjustment15

The Position Of Vr1 And Vr216

Connection Diagram For Meter Amplifier Adjustment16

Exploded Views17

Nomenclature Of Screws, Washers And Nuts17

External Part18

Internal Part19

Panel Stay Block19

Center Chassis Block20

Rear Panel Block21

Power Amplifier Block21

Schematic Diagrams, P. C. Board Patterns And Parts List22

Schematic Diagram And Miscellaneous Parts22

Schematic Diagram23

External Appearance Of Transistors And Ic23

Meter Amplifier Assembly24

Parts List Of Meter Amplifier Assembly (Awm-113)26

Semiconductors27

List Of Changed Parts For Factory Modification28

Power Amplifier Assembly (Awh-065)29

Parts List of Power Amplifier Assembly (AWH-065)31

Resistors And Potentiometers31

Fuse Assembly (AWR-143)33

Parts List Of Fuse Assembly (Awr-143)34

Power Supply Assembly (Awr-139)35

Parts List Of Power Supply Assembly (Awr-139)35

Foil Side (Awr-140)36

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