Casio cps 7 service manual
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Extracted text from casio cps 7 service manual (Ocr-read)
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Ñ 2 Ñ CONTENTS ELECTRICAL Current Drain with 12 V DC: No Sound Output 145 mA ± 20% Maximum Volume 1470 mA ± 20% with keys C2 to B3 (24 polyphonic) pressed in Strings tone Volume: maximum, Touch response: maximum Headphone Output Level (Vrms with 8 W load each channel): with key F3 pressed in Strings tone Left channel 100 mV ± 20% Speaker Output Level (Vrms with 8 W load each channel): with key F2 pressed in Strings tone Left channel 2800 mV ± 20% Minimum Operating Voltage: 5.8 V SPECIFICATIONS GENERAL Number of keys: 76 Polyphonic: 24-note Preset tones: 5, Piano-1, Piano-2, Electric Piano, Pipe Organ, Strings Layer Touch response: On/Off Key transpose: Range of ± 1 octave by a semitone increment Demo tunes: 5, 1. Petit Chien 2. Cozy's Castle 3. Red Leaves 4. Toccata & Chorus 5. Rainbow Tuning control: 440Hz ± 50 cents Built-In speakers: 12 cm dia. 5 W input rating: 2 pcs. MIDI: 8-channel, multi-timbral reception Terminals: Phone Jack [Output impedance: 47 W, Output voltage: 2.6 V(rms) MAX], MIDI Jacks (IN, OUT), Sustain Jack, AC Adaptor Jack (12 V) Auto power off: Approximately 6 minutes after the last operation Power source: 2-way AC or DC source AC: AC adaptor AD-12 DC: 6 D size dry batteries Battery life: approx. 4 hours by manganese batteries R20P/SUM-1 Power consumption: 18 W Dimensions (HWD): 96 x 1161 x 303 mm (3-3/4 x 45-11/16 x 11-15/16 inches) Weight: 6.3 kg (13.9 lbs) excluding batteriesSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Major Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 PCB View and Check Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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Ñ 3 Ñ BLOCK DIAGRAM KC0 ~ KC7FI0 ~ FI9 SI0 ~ SI9 Sound Source ROM (2M-bit) LSI102 TC534200CF-C116 LRCK, SO, BCK D/A Converter IC105 UPD6379GR Filter IC104 M5218APR Power Amplifier IC101 LA4620 Keyboard MA0 ~ MA17 Power Supply Circuit Q102 ~ Q107, D105, D106 VCC AVDD VDD VC APO Speakers Output MIDI IN OUT ButtonsVDD Power Switch Reset IC IC106 RE5VA35AARESET CPU LSI101 UPD912GF-3BA KI0 MD0 ~ MD15 NMI Main Volume Equalizer IC103 M5218APR NOMENCLATURE OF KEYS F#3 G#3 A#3 C#4 D#4F#4 G#4 A#4C#5 D#5F#5 G#5 A#5 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5C6 D#3 C2 D2E2 F2G2 A2 B2 C3 D3E3 B6 A6 G6 F6 E6 D6 C7 C#3 A#2 G#2 F#2 D#2 C#2 A#6 G#6 F#6 D#6 C#6 E1 F1 G1 A1 B1F#1 G#1 A#1 D7 E7 F7 G7 C#7 D#7 F#7