Table Of Contents; Specifications - Casio CTK-680 Service Manual

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Major Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Printed Circuit Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
GENERAL
Model:
Keyboard:
Tones:
Polyphony:
Digital effects:
Musical pads:
Demo tunes:
Auto-accompaniment
Rhythm patterns:
Tempo:
Chords:
Parts:
Others:
Magical presets:
Registration memory:
Mixer
Number of channels:
Parameters:
Multi-track memory
Number of songs:
Tracks:
Type:
Capacity:
CONTENTS

SPECIFICATIONS

CASIO CTK-680
61-key, 5-octave standard size keyboard with touch response (three sensi-
tivity levels and OFF setting)
128 tones (Conform with General MIDI level 1) + 8 drum sounds with split/
layer features.
32 notes maximum
10
REVERB 1, REVERB 2, REVERB 3, CHORUS, TREMOLO, PHASE
SHIFTER, ORGAN SPEAKER, ENHANCER, FLANGER, LOUDNESS
120 (four pads × 30 sets)
Phrases (22 sets), drums/percussion (7 sets), controller (1 set)
Phrases matche chord
3, sequential repeat playback
100
Adjustable (216 levels,
3 types (CASIO Chords, Fingered, Full-Range Chords)
Rhythm, bass, Chord 1, Chord 2, Chord 3 (adjustable on/off, tone, volume,
pan, effect send, fine tune, coarse tune, expression settings)
Intro, Normal Fill-in, Variation Fill-in, Synchro/Ending
50 types (Break Beat, Melodycomp, Shadow Drum, Free Session)
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
16
TONE, VOLUME, PAN, EFFECT SEND, FINE TUNE, COARSE TUNE,
EXPRESSION
2
6 (tone, volume, auto accompaniment, magical presets, pan, effect send, fine
tune, coarse tune, expression)
Real-time
Approximately 5,200 notes
- 2 -
= 40 to 255)