Casio CTK-480 Service Manual

Also see for CTK-480: Operation manual Operation manual

Contents

Casio CTK-480 Service Manual Manual pdf 2 page image

— 2 —CONTENTSSpecifications .......................................................................................................................... 2Block Diagram ......................................................................................................................... 3Circuit Description ................................................................................................................... 4Troubleshooting ...................................................................................................................... 7Major Waveforms .................................................................................................................... 8Schematic Diagrams ............................................................................................................... 9Printed Circuit Boards ........................................................................................................... 11Exploded View ...................................................................................................................... 13Parts List ............................................................................................................................... 15SPECIFICATIONSGENERALNumber of keys: 61Polyphonic: 12-notePreset tones: 100Auto-rhythms: 50, Tempo control: 40 to 255Accompaniment: CONCERT Chord, FingeredSong bank: 20-tuneTuning control: 440 Hz ± 50 centsBuilt-in speakers: 4 inch dia. 1 W input rating: 2 pcsTerminals: Headphone Jack (Output impedance: 50 ohm, Output voltage: 4.6 V (rms) MAXPower source: 2-way AC or DC sourceAC: AC adapterDC: 6D size dry batteries, Vehicle battery with DC adapterPower consumption: 7.7 WDimensions(HWD): 90 × 910 × 322 mm (3-1/2 × 36-3/16 × 12-11/16 inches)Weight: 3.9 kg (8 lbs) excluding batteriesELECTRICALCurrent drain with 9 V DC:No sound output 120 mA ± 30%Maximum volume 650 mA ± 30%with white keys C1 to G2 pressed in Synth-Lead 1Volume: 9Phone output Level (Vrms with 8 ohm load each channel):with key E3 pressed in Synth-Lead 1 80 mV ± 30%Sound Pressure (at 10 cm away from speaker):with key E3 pressed in Synth-Lead 1 100 dB ± 10 dBMinimum operating voltage: 6.0 V