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ELECTRONIC KEYBOARD

(without price)

CPS-7

CPS-7

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Summary of Contents for CPS-7

Page 1: ...ELECTRONIC KEYBOARD without price CPS 7 CPS 7...

Page 2: ...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 m...

Page 3: ...D VC APO Speakers Output MIDI IN OUT Buttons VDD Power Switch Reset IC IC106 RE5VA35AA RESET CPU LSI101 UPD912GF 3BA KI0 MD0 MD15 NMI Main Volume Equalizer IC103 M5218APR NOMENCLATURE OF KEYS F 3 G 3...

Page 4: ...G 3 1 A3 1 A 3 1 SI3 D 3 2 E3 2 F3 2 F 3 2 G3 2 G 3 2 A3 2 A 3 2 FI4 B3 1 C4 1 C 4 1 D4 1 D 4 1 E4 1 F4 1 F 4 1 SI4 B3 2 C4 2 C 4 2 D4 2 D 4 2 E4 2 F4 2 F 4 2 FI5 G4 1 G 4 1 A4 1 A 4 1 B4 1 C5 1 C 5...

Page 5: ...VC 12 V Power amplifier CPU LSI101 UPD912GF 3BA The 16 bit CPU contains a 1k byte RAM three 8 bit I O ports two timers a keycontroller and serial interfaces The CPU detects key velocity by counting th...

Page 6: ...nal input 22 INT Not used Connected to ground 23 30 FI0 FI3 SI0 SI3 In Key input signal 31 38 KC0 KC7 Out Key scan signal output 39 50 FI4 FI9 SI4 SI9 In Key input signal 51 FI10 In Not used 52 SI10 I...

Page 7: ...hord bass and percussion for the right and left channels The DAC converts the data into analog waveforms and output them to each channel separately POWER AMPLIFIER IC102 LA4598 The power amplifier is...

Page 8: ...5 V MAJOR WAVEFORMS 3 Key scan signal KC0 UPD912GF 3BA pin 31 4 Key scan signal KC1 UPD912GF 3BA pin 32 5 Key scan signal KC2 UPD912GF 3BA pin 33 1 POWER ON signal UPD912GF 3BA pin 21 2 APO signal UP...

Page 9: ...CH2 CH1 0 1 V CH2 0 1 V 9 0 PCB VIEW AND CHECK PRINTS Tone Piano 1 Key A4 Touch response Off Volume Maximum 9 DAC output R ch UPD6379GR pin 5 0 DAC output L ch UPD6379GR pin 8 A Equalizer output R ch...

Page 10: ...10 SCHEMATIC DIAGRAMS MAIN PCB JCM422 MA1M 1 4 3 5 7 6 8 2 10 9 12 11 0 0 5 1 11 1 5 7 11 7 11 7 5 3 6 0 11 0 11 6 0 7 11 0 0 0 5 1 4 5 5 1...

Page 11: ...11 KEYBOARD PCBs JCM762T KY1M KY2M...

Page 12: ...12 EXPLODED VIEW 8 7 3 1 4 5 6 6 9 10 12 13 15 11 14 15 1 15 2 20 18 17 16 2 19...

Page 13: ...re subject to change with out prior notice 2 As for spare parts order and supply refer to the GUIDEBOOK for Spare parts Supply published seperately 3 The numbers in item column correspond to the same...

Page 14: ...ower HEC2305 01 920 1 A J102 3612 0665 Jack Phone YKB21 5006 1 A J103 3612 0789 Jack YKB21 5010 1 B J104 3501 4816 Jack DIN YKF51 5051 1 B MC101 102 2845 0168 Module capacitor CNB8X101K 2 C MC103 104...

Page 15: ...B 17 6922 2761 Key conatct rubber 1 octave M211704A 1 5 B N 18 6923 7970 Key contact rubber E B M240181 1 1 B N 19 6923 7640 Bottom case M240223 1 1 C 20 6918 1636 Battery cover M311164F 1 1 B Access...

Page 16: ...MA0900951A...

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