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General| Brand | Onkyo |
|---|---|
| Model | EQ-540 |
| Category | Stereo Equalizer |
| Language | English |
Components marked with 'A' are critical for fire and shock risk.
Details input/output sensitivity, impedance, frequency response, and THD.
Covers oscillator frequencies and microphone amp input/response.
Includes AC outlet, power supply, dimensions, and weight.
Procedures for replacing lamps and performing insulation resistance tests.
Instructions for setting the voltage selector to match local power supplies.
Specifies initial switch positions and control settings for adjustment.
Procedures for adjusting level meter sensitivity and L/R deviation.
Steps for adjusting oscillator signal distortion and warble tone.
Guidelines for using and replacing the battery in the accessory microphone.
Identifies and describes the functions of all front panel controls and indicators.
Illustrates the overall signal flow and major functional blocks of the unit.
Provides pinouts and functional blocks for key integrated circuits.
Visual representation of internal components with corresponding part numbers.
Diagram and list of items for packaging the unit for shipment.
Diagram showing how to connect the equalizer to amplifiers and tape decks.
Detailed parts list for the equalizer circuit board.
Detailed parts list for the main printed circuit board.
Detailed parts list for the equalizer switch and mic circuit board.
Detailed parts list for the equalizer switch PC board.
Parts lists for the FL tube and FL driver circuit boards.
Parts lists for power transformer, switch, and AC socket boards.
Parts list for the voltage selector component.
Detailed list of front panel components and controls.
Detailed list of PC boards, transformers, and switches.
