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Manuals
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Pioneer Manuals
Stereo Receiver
SX-1980
Service manual
Pioneer SX-1980 Service Manual
Am/fm stereo receiver
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Contents
Table of Contents
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Table of Contents
Model SX-1980 Comes in Five Versions Distinguished as Follows
Contents
Specifications
HEX Wrench
Connection Diagram
Front Panel Facilities
Block Diagram
Tuner Section
Power Supply Section
AF Amplifier Section
Level Diagram
Circuit Descriptions
FM Front End
IF Amplifier and Detector
Multiplex Decoder
Audio Output Circuit
APC Circuit
Sampling Hold Circuit
LPF and DC Amplifier
VCO and Equilizer Amplifier
Structure of APC Control Circuit
Beat Detector II
Touch Sensor
Outline of APC Control Circuit
LED Driver
APC Control Circuit Operation
Re-Lock Operation
AM Tuner Stage
AM Tuner Section
Preamplifier Section
Phono Circuits
Flat Amplifier
Tone Controls
Power Amplifier Section
Amplifier Circuitry
Filter Circuits
Power Limiter
Output Power Meters
Peak Hold Circuit
Protection Circuit
Surge Current Suppressor Circuit
Power Supply Circuit
DC Power Supply Circuit
Disassembly
Heat Sink
Parts Location
Front Panel View
Front View with Panel Removed
Top View
Bottom View
Rear Panel View
Dial Cord Stringing
Adjustments
FM Tuner
APC Adjustments
AM Tuner
Exploded View
Top Side (Front)
Top Side (Rear)
Bottom Side
Rear Panel Component
Schematic Diagrams, P.C. Board Patterns and Parts List
Miscellanea
Miscellaneaus Parts
Circuit Diagram of IC
FM Front End (AWB-030)
Schematic Diagram
Tuner Assembly
Parts List of Tuner Assembly (AWE-093)
Slide Switch Assembly (AWS-125)
Cartridge Load Assembly (GWS-130)
APC Assembly (AWX-124)
Foil Side
Parts List of APC Assembly (AWX-124)
List of Changed Parts for Factory Modification
EQ Amplifier Assembly (AWF-030)
Parts List of EQ Amplifier Assembly (AWF-030)
Function Selector Assembly (GWS-129)
Parts List of Function Selector Assembly (GWS-129)
APC Control/MIC Assembly (GWM-104)
Parts List of APC Control/MIC Assembly (GWM-104)
Tone Control Assembly (AWG-059)
Parts List of Tone Control Assembly (AWG-059)
Filter Assembly (AWM-119)
Parts List of Filter Assembly (AWM-119)
Rectifier L Assembly (GWR-106)
Power Amplifier L Assembly (GWH-109)
Parts List of Power Amplifier L Assembly (GWH-109)
Power Amplifier R Assembly (GWH-110)
Parts List of Power Amplifier R Assembly (GWH-110)
Meter Amplifier Assembly (AWM-122)
Parts List of Meter Amplifier Assembly (AWM-122)
Rectifier R Assembly (GWR-107)
Power Supply Assembly (AWR-154)
Parts List of Power Supply Assembly (AWR-154)
Packing
Contrast of Miscellaneous Parts
Supplements for HG Type
Exploded View of Rear Panel
Schematic Diagram (for HG)
Meter Amplifier Assembly (AWM-126)
Parts List of Meter Amplifier Assembly (AWM-126)
Power Supply Assembly (AWR-155)
Parts List of Power Supply Assembly (AWR-155)
Schematic Diagram (for S and S/G)
Supplements for S and S/G Type
5P Connector Assembly (AWX-062)
Supplements for Model SX-1980/KC
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Model Sx-1980 Comes in Five Versions Distinguished as Follows
2
Specifications
3
Connection Diagram
4
Power Supply Section
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