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Manuals
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Pioneer Manuals
Stereo Receiver
SX-1280
Service manual
Pioneer SX-1280 Service Manual
Am/fm stereo reciever
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Table Of Contents
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Contents
Table of Contents
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Table of Contents
Table of Contents
Specifications
Hex. Wrench
1 Speciftcat|Ons.
2 Connection Diagram
3 Front Panel Facilities
Block Diagram
5 B L O C K D I a G R a M
Circuit Descriptions
FM Front End
T U N E R S E C T I O N
A F S E C T I O N
AF Section
Equalizer Amplifier
FM Output Amplifier
MIC Input Circuit
Filter Circuits
Flat Amplifier
Power Amplifier
Tone Controls
Meter Amplifier
P O W E R S U P P L y C I R C U I T
Schematic Diagram of Meter Amplifier
Surge Current Suppressor Circuit
Abnormal Power Amplifier Neutral Point Potential
POWER Switch Muting
Protection against Overload
Protection Circuit
Disassembly
Bonnet Cover
Bottom Plate
Front Panel
Wooden Cover
7 , Dtsassembly
8 Parts Location
F R O N T P a N E L V I E W
Front Panel View
F R O N T V I E Ww I T H P a N E L R E M O V E D
Front View with Panel Removed
Top View
Bottom View
Rear Panel View
Dial Cord Stringing
500 D I a L C O R D S T R I N G I N G
Adjustments
FM Tuner
FM Tracking
MPX Decoder
DC Balance
Idle Current
Exploded Views
External Part
Internal Part
Top Side Component (Front)
To Side Component (Rear)
Bottom Side Component
Rear Panel Component
Packing
Schematic Diagram and Miscellaneous Parts
External Appearance of Transistors and Lcs
Circuit Diagrams of Lgs
Schematic Diagram
Tuner Assembly (Awe-092)
Parts List of Tuner Assembly (AWE-0921
Microphone Jack Assembly (Gwm-105}
Cartridge Load Assembly (Gws-134)
Function Switch Assembly (Gws-133}
Parts List of Function Switch Assembly (GWS-173)
EQ Amplifier Assembly (AWF-031)
Parts List of EO Amplifier Assembly (AWF-031)
Flat Amplifier Assembly (Awg-O6O)
Parts List of Flat Amplifier Assembly (AWG-060)
List of Changed Parts for Factory Modification
Tone Amplifier Assembly (Awg-059)
Parts List of Tone Control Assembly (AWG'059)
Filter Amplifier Assembly
Parts List of Filter Assembly (AWM-I19)
Power Amplifier Assembly (Awh.o74)
Parts List of Power Amplifier Assembly (AWH-074)
Resistor Assembly
Parts List of Resistor Assembly (AWX-127)
Meter Amplifier Assembly
Parts List of Meter Amplifier Assembly (AWM-121)
Power Supply Assembly
Parts List of Power Supply Assembly (AWR-1571)
FUSE ASSEMBLY (AWX-I26L-Or (AWX-139)
Protection Circuit Assembly (Awm-123)
Parts List of Protection Assembly (RWM-123)
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