Pioneer SX-780 User Manual

Do not expose the appliance to rain or moisture to prevent fire or shock hazards.

Details the amplifier's differential amplifier, current mirror load, Darlington power ICs, and NFB circuit.

Describes the FM tuner's 3-stage RF amplifier, dual gate MOS FET, ICs, ceramic filters, and MPX stage.

Explains the IC-configured NFB-type equalizer amplifier with low noise and high gain.

Covers bass/treble controls that disengage at center, and a low cut filter below 15Hz.

Details the IC-based protection circuit that safeguards the power amplifier and speakers.

Explains the left/right channel power meters with logarithmic compression for direct readout.

Recommendations for turntable setup, speaker placement, and wall proximity.

Advice on listening position, carpet use, and blocking direct sunlight.

Lists locations liable to downgrade performance or cause breakdowns, like direct sun or high humidity.

Emphasizes not covering the receiver and leaving space for adequate ventilation due to heat.

Diagram showing connections for FM outdoor, T-type FM, and AM outdoor antennas.

Illustrates connecting turntables to PHONO jacks and tape decks to TAPE/AUX jacks.

Explains using the 25µs setting for FM Dolby broadcasts, requiring an adaptor.

Describes the 100W max switched outlet, coupled with the receiver's power switch.

Details the 300W max unswitched outlet, which is always powered.

Advises against bundling cords and using long cords to prevent noise and quality issues.

Recommends reading connection details to prevent faulty connections and ensure proper operation.

General safety and connection advice, including power switch timing and secure connections.

Details on connecting speaker systems to terminals A and B, including polarity.

Instructions for connecting turntable output and ground lead to the receiver's PHONO input.

Explains connecting TV tuners, other tuners, or tape deck outputs to AUX jacks.

Details the TAPE 1/2 REC output and PLAY input jacks for tape deck connections.

Note on connecting a second tape deck to TAPE 2 REC and PLAY jacks.

How the switched outlet operates with the receiver's power switch, max 100W.

How the unswitched outlet operates, always powered, max 300W.

Warnings about not connecting inappropriate appliances or touching wet outlets.

Discusses signal weakness, multipath effects, and choosing suitable antennas and locations.

Recommendations for special FM antennas and connection via coaxial cable or 300-ohm feeder.

Step-by-step guide for preparing and connecting a 300-ohm feeder to the receiver.

Instructions for preparing and connecting a 75-ohm coaxial cable to the receiver.

Guidance on using the accessory T-type antenna for strong FM signals in wooden buildings.

How to adjust the rear panel AM bar antenna for best reception.

Tips for using indoor or outdoor AM antennas when built-in reception is poor.

Connect a ground lead for safety and noise reduction, avoiding gas pipes.

Advice on choosing antenna height and direction for stable FM reception.

Recommendations for feeder/cable routing and keeping cabling short.

Describes how to read the rated power level using the meters.

Explains the indicator that lights up when tape monitoring is active.

Explains the indicator that lights up when playing the program source.

Details the power switch operation and the delay for muting.

How to connect headphones and release speaker buttons for headphone-only listening.

How to select speaker systems A, B, or both.

Explains boosting or attenuating bass/treble and tone control bypass.

Function of the 15Hz low filter for cancelling ultra-low frequencies.

How the FM muting switch suppresses inter-station noise or allows weak station reception.

Indicates the broadcasting stations on the dial.

Lights up when the receiver is tuned to a stereo broadcast.

Helps tune stations for optimum reception by indicating signal strength.

Used to select broadcasting stations and tune for optimum reception.

Adjusts the output level to speakers and headphones.

Compensates for hearing response at low volumes by emphasizing bass and treble.

Balances the volume between left and right channels.

Selects the program source (AM, FM, PHONO, AUX).

Monitors tape playback or recording from connected tape decks.

Selects between stereo and mono performance.

Guides on setting controls like SPEAKERS, VOLUME, BALANCE, and switches before powering on.

Steps for selecting AM stations, tuning, and adjusting volume and tone controls.

Steps for tuning FM stations, using the tuning meter and stereo indicator.

Steps for playing records, including setting the FUNCTION switch and adjusting volume/tone.

Advice on stylus handling, avoiding vibration, and proper power-off procedure.

Steps for connecting and operating audio components via AUX jacks.

Steps for playing back pre-recorded or recorded music tapes.

Monitoring recorded sound through speakers during recording using 3-head decks.

Connecting tape decks for duplicating and editing recorded tapes.

Steps for recording, including setting the FUNCTION switch and adjusting levels.

Connecting a Dolby NR adaptor and setting switches for FM-Dolby reception.

Explains setting the FM DE-EMPHASIS switch to 25µs for Dolby and 75µs otherwise.

Lists quantities of FETs, ICs, Transistors, and Diodes used in the unit.

Details power output, total harmonic distortion, and intermodulation distortion.

Lists sensitivity, impedance, and output levels for various inputs and outputs.

Details frequency response for PHONO, AUX/TAPE, and tone control ranges.

Specifications for the low filter and loudness contour.

Specifies hum and noise levels for PHONO and AUX/TAPE inputs.

Provides sensitivity figures for mono and stereo FM reception.

Specifies the signal-to-noise ratio for mono and stereo FM reception.

Details distortion percentages and frequency response for FM.

Lists selectivity, spurious response, image response, and AM suppression ratios.

Provides muting threshold and stereo separation figures.

Details sensitivity and selectivity for AM reception.

Specifies signal-to-noise and image response ratios for AM.

Details power supply voltage, consumption, physical dimensions, and weight.

Check controls and cords before assuming unit malfunction.

Diagnosing and fixing various noises like buzzing, hum, static, and poor reception.

Troubleshooting poor output tone quality, howling, and stylus-related problems.

Explanation of the delay before sound on power-up due to the protection circuit.