Casio ctk 680 service manual
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Extracted text from casio ctk 680 service manual (Ocr-read)
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Ñ 2 Ñ CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Major Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Printed Circuit Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 SPECIFICATIONS GENERAL Model: CASIO CTK-680 Keyboard: 61-key, 5-octave standard size keyboard with touch response (three sensi- tivity levels and OFF setting) Tones: 128 tones (Conform with General MIDI level 1) + 8 drum sounds with split/ layer features. Polyphony: 32 notes maximum Digital effects: 10 REVERB 1, REVERB 2, REVERB 3, CHORUS, TREMOLO, PHASE SHIFTER, ORGAN SPEAKER, ENHANCER, FLANGER, LOUDNESS Musical pads: 120 (four pads ´ 30 sets) Phrases (22 sets), drums/percussion (7 sets), controller (1 set) Phrases matche chord Demo tunes: 3, sequential repeat playback Auto-accompaniment Rhythm patterns: 100 Tempo: Adjustable (216 levels, q = 40 to 255) Chords: 3 types (CASIO Chords, Fingered, Full-Range Chords) Parts: Rhythm, bass, Chord 1, Chord 2, Chord 3 (adjustable on/off, tone, volume, pan, effect send, fine tune, coarse tune, expression settings) Others: Intro, Normal Fill-in, Variation Fill-in, Synchro/Ending Magical presets: 50 types (Break Beat, Melodycomp, Shadow Drum, Free Session) Registration memory: 10 Tone changes, tempo setting, auto-accompaniment volume setting, mode, layer on/off, Mixer settings, effect type, split on/off, rhythm type, auto- accompaniment rhythm assignment, pad type, chord fingering method, touch response setting, MIDI settings (including assignable jack settings), Magical Preset type Mixer Number of channels: 16 Parameters:TONE, VOLUME, PAN, EFFECT SEND, FINE TUNE, COARSE TUNE, EXPRESSION Multi-track memory Number of songs: 2 Tracks: 6 (tone, volume, auto accompaniment, magical presets, pan, effect send, fine tune, coarse tune, expression) Type: Real-time Capacity: Approximately 5,200 notes
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Ñ 3 Ñ Other functions Transpose: 25 levels (1 octave lower C to 1 octave upper C) Tuning: Adjustable: A4 = 440 Hz ± 50 cents Pitch Bender: Adjustable range: ± 12 semitones (bend up, bend down, bend saw) using musical pads Modulation: Vibrato setting and performances are done by a Musical pad. MIDI: 16-timbre multi-timbre receive (General MIDI Level 1) Speakers: 12 cm diameter ´ 2 (output: 2.5 W + 2.5 W) Input/Output Jacks Power supply: 9 V DC Headphones: Stereo mini jack Output jacks: Output impedance: 120 W Output voltage 4.2 V (RMS) MAX Assignable Jack: Standard jack (sustain, sostenuto, soft, rhythm start/stop) MIDI terminals: IN, OUT Power supply: 2-way Batteries: Six D-size batteries Battery life: Approximately 5 hours on R20P (SUM-1) manganese batteries AC adaptor: AD-5 (optional) Auto power off:Approximately six minutes after last key operation under battery power (disabled when AC adaptor is connected). Power consumption: 9 V --- 7.7 W Dimensions: 94.2 ´ 36.7 ´ 13.5 cm (31-7/16 ´ 14-1/2 ´ 4-3/8 inches) Weight: 5.2 kg (11.7 lbs) excluding batteries ELECTRICAL Current drain with 9 V DC: No sound output 320 mA ± 20% Maximum volume with 12 polyphonic notes in tone No. 022 960 mA ± 20% Volume; maximum Phone output level (Vrms with 8 W load each channel): Left channel 115 mV ± 20% with key C6 pressed in tone No. 042 Line output level (Vrms with 47 kW load each channel): Left channel 1280 mV ± 20% with key C5 pressed in tone No. 042 Minimum operating voltage: 5.75 V