Product: Service Manual. Sony TA-3120A All Silicon Transistor Stereo Amplifier. Almost 40 pages total (including service bulletin regarding factory prescribed modification/upgrading). Note: This is the actual SERVICE MANUAL and not the service guide floating around out there.
Models Applicable: TA-3120A
Format: Download/PDF
Covers/Contents:
Specifications
Block Diagram
Disassembly
Checkout and Adjustment
AC bias adj
DC bias adj
Protection circuit checkout
Servicing & Replacing Printed Circuits
Troubleshooting Chart
Amp, PWB, conductor side
Amp, PWB, component side
Protection Circuit PWB(s)
Thermo Comp Diode PWB(s)
Power Supply Diode PWB(s)
Schematic Diagram
Exploded Diagram
Service Manual Supplement No. 1 Apl. '69
This supplement updates and modifies the overload protection circuit
Includes new parts list
Detailed circuit desc of overload protection circuit
Test and Adjustment
Schematic Diagram
Mounting Diagram [amp]
Power Amplifier Board
Mounting Diagram [protec cir bd]
Protection Circuit Board
Thermo Comp Diode PWB
Power Supply Board
COMPLETE Spare Parts List [TA-3120A]
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