Product: Service Manual. Covers models: Optonica SA-5901, SA-5901C, SA-5905, SA-5905C FM/AM, FM Stereo Receiver. Very large manual, approx 76 pages.
Format: Download/PDF
Covers/Contents:
Specifications
Dial Cord Stringing
Disassembly
Parts Layout (front & rear)
Block Diagram
Circuit Description
FM Front end circuit
FM IF amp circuit
FM detector circuit
FM muting circuit
FM stereo demodulator circuit
Low pass filter
Hi-Blend circuit
Variable air check calibrator circuit
FM tuning auto (opto)-lock mechanism
AM circuit
AF amplifier circuit
Audio Muting circuit
Tone control circuit
Phono equalizer circuit
Main (power) amplifier circuit
Protection circuit (relay circuit)
Output Power meter drive circuit
Recording output circuit
Alignment Instructions
Alignment points
AM IF/RF alignment
FM IF/RF alignment
Adjust of FM tuning meter & distortion factor
Adjust of FM auto (opto)-lock & FM muting
Adjust of Air check level
Adjust of FM Stereo VCO, Separation & pilot sig cancel
Adjustment of Main Amp circuit & output power meter
Equivalent circuit of I.C.
Notes on Schematic Diagram
Schematic Diagram
Wiring Side of Printed Wiring Board
Power Transistors Replacement
Cabinet exploded view
Transistors type
Diodes type
Replacement Parts List
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Service Manual, Optonica SA-5901, SA-5905.
Note: You are buying reference material in PDF format for use in repair or maintenance of your equipment -- you are NOT buying stereo equipment.
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