Casio wk 1200 service manual
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Ñ 1 Ñ SPECIFICATIONS GENERAL Keyboard:73 standard-size keys, 6 octaves (with touch response on/off) Drum pads:6 Tones:200 (128 General MIDI, 32 synthesized, 8 drum, 32 user); with layer and split Rhythm instrument tones:51 Polyphony:24 notes maximum (12 for certain tones) Digital effects:3 reverb types (HALL, STAGE, ROOM) Auto accompaniment Rhythm patterns: 100 Tempo: Variable (216 steps, = 40 to 255) Chords: 3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD) Rhythm controller: START/STOP, INTRO, NORMAL /FILL-IN, VAR/FILL-IN, SYNCHRO/ ENDING Accomp volume: 0 to 127 (128 steps) Free session Number of patterns 100 (auto-accompaniment in accordance with selected chord progres- sion) Memory function Songs: 2 Recording tracks: 6 (2 through 6 are melody tracks) Recording methods: Real-time, step Memory capacity: Approximately 5,200 notes (total for two songs) Edit function: Equipped Demo tunes:2 Synthesizer function Parameters: PCM set, amp envelope set, attack rate, release rate, pitch envelope set, pitch, level, touch sense, pan Mixer function Channels: 16 Parameters: Program change number, volume, expression, pan, coarse tuning, fine tuning, on/off/solo MIDI:16 multi-timbre receive, GM Level 1 standard Other functions Pitch bend range: 12 semitones upwards and downwards Transpose: 25 steps (Ð12 semitones to +12 semitones) Tuning: Variable (A4 = approximately 440 Hz ± 50 cents) CONTENTS Page Specifications ............................................................................................................................................ 1 Block Diagram ........................................................................................................................................... 3 Circuit Description ..................................................................................................................................... 4 Adjustment .............................................................................................................................................. 12 Major Waveforms .................................................................................................................................... 13 Printed Circuit Boards ............................................................................................................................. 14 Schematic Diagrams ............................................................................................................................... 15 Exploded View ........................................................................................................................................ 21 Parts List ................................................................................................................................................. 23
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Ñ 2 Ñ ELECTRICAL Current drain with 12 V DC: No sound output 430 mA ± 20 % Maximum volume 1570 mA ± 20 % with 24 keys from C4 to C6 pressed in Bassoon tone Volume: maximum, Touch response: maximum Reverb: Hall Phone output level (Vrms with 8 W load each channel): with key A5 pressed in Bassoon tone L-ch 165 mV ± 20 % Volume: maximum R-ch 150 mV ± 20 % Reverb: Hall Speaker output level (Vrms with 4 W load each channel): with key A5 pressed in Bassoon tone L-ch 5500 mV ± 20 % Volume: maximum R-ch 5200 mV ± 20 % Reverb: Hall Output level (Vrms with 47 kW load each channel): with key A5 pressed in Bassoon tone L-ch 4260 mV ± 20% R-ch 3950 mV ± 20% Minimum operating voltage:6.3 V About General MIDI General MIDI standardizes MIDI data for all sound source types, regardless of manufacturer. General MIDI specifies such factors as tone numbering, drum sounds, and available MIDI channels for all sound sources. This standard makes it possible for all MIDI equipment to reproduce the same nuances when playing General MIDI data, regardless of the manufacturer of the sound source. This keyboard supports General MIDI, so it can be used to play commercially available pre-recorded General MIDI data and General MIDI data send to it from a personal computer. Terminals MIDI terminals: IN, OUT Assignable terminal: Standard jack (sustain, sostenuto, soft, rhythm start/stop) Headphone/Output terminal: Stereo standard jack Output Impedance: 200 W Output Voltage: 4.9 V (RMS) MAX Power supply terminal: 12 V DC Power supplyDual power supply system Batteries: Six D-size batteries Battery life: Approximately 2 hours (UM-1/R20) 8 hours (AM-1/LR20) AC adaptor: AD-12 Auto power off: Turns power off approximately six minutes after last key operation. En- abled under battery power only, can be disabled manually. Power consumption:12 V --- 18 W Speaker output:5 W + 5 W Dimensions (HWD):116.2 ´ 42.1 ´ 14.7 cm (45-13/16 ´ 16-9/16 ´ 5-13/16 inches) Weight:Approximately 9.1 kg (20.1 lbs) (without batteries)