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ELECTRIONIC KEYBOARD

CTK-50

CTK-50

(without price)

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Summary of Contents for CTK-50

Page 1: ...ELECTRIONIC KEYBOARD CTK 50 CTK 50 without price...

Page 2: ...e Preset tones 100 Auto rhythms 100 Auto accompaniment CASIO Chord Fingered Demonstration tune Classical Medley Built in speakers 10 cm dia 2 0W Input Rating 1 pc Terminal AC Adapter Jack DC 9 V Power...

Page 3: ...OCK DIAGRAM KO0 KO9 KI0 KI7 Keyboard Switches Oscillator Q301 X301 VDD 5 V Power supply circuit Q101 Q102 D102 VC 9 V Amplifier A4598 IC101 Speaker Filter Q201 CPU MSM6387 13 LSI201 Main Volume AVDD 4...

Page 4: ...D2 E2 F2 G2 A2 B2 C3 D3 E3 KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7 KO0 0 1 C2 C 2 D2 D 2 E2 F2 KC1 KO1 2 3 F 2 G2 G 2 A2 A 2 B2 KC2 KO2 4 5 C3 C 3 D3 D 3 E3 F3 KC3 KO3 6 7 F 3 G3 G 3 A3 A 3 B3 KC4 KO4 8 9 C4...

Page 5: ...pulse input 9 COSO Not used 10 VDD In 5 V source 11 18 KI0 KI7 In Input terminals from keys and switches 19 20 KO11 KO10 Not used 21 30 KO9 KO0 Out Key and switch scan signal outputs CPU LSI201 MSM638...

Page 6: ...dby In Power control signal input 0 V OFF 9 V ON 10 Ch2 IN In Channel2 input 11 Ch2 N F In Negative feedback input 12 Ch2 OUT Out Channel2 output 13 Ch2 B S Out Terminal for a bootstrap capacitor 14 N...

Page 7: ...ply circuit Faulty Q101 Replace Q101 Faulty D102 Replace D102 Power switch Poor contact Clean the contacts Power jack J101 Open J101 or poor soldering Replace J101 or resolder No sound at all Power Am...

Page 8: ...MSM6387 13 pin 29 4 5 6 7 Sound signal output MSM6387 13 pin 5 Filter output Emitter of Q201 Power amp input LA4598 pin 6 Power amp output LA5498 pin 3 Tone Flute No 13 Key A3 Volume Maximum 1 2 3 4 5...

Page 9: ...9 SCHEMATIC DIAGRAMS Keyboard PCB...

Page 10: ...10 Main PCB Notes 1 All capacitance values are indicated in F p 10 6 F 2 All resistance values are indicated in k 103 M 106 1 2 3 4 5 6 7 8 9 5 9 5 0 5 3 0 3 0 9 2 2 2 4 4 7 1 8...

Page 11: ...22 R221 R220 R219 R218 R217 C223 MC201 JCM509 MA2M B No 2 D108 75 75 5 75 R208 D201 150 C211 C219 C207 150 100 C202 R204 R203 Q201 C203 C201 D110 D112 D113 D105 B E D104 C111 75 C112 R108 14 200 R105...

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

Page 13: ...e 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 n...

Page 14: ...9 MA3M M140038A 3 1 C A N 13 6923 2820 PCB ass y JCM498 KY12M M140023 1 1 C K D1 D49 2301 0101 Diode 1S2473 T 77 T 49 C A N 13 1 3719 4417 Ribbon cable 15 pin DF5H15180 MM 1 C B N 13 2 3719 4424 Ribbo...

Page 15: ...Semiconductive 0 012 F 16 V 10 C203 Semiconductive 0 027 F 16 V 10 C206 C207 Electrolytic 330 F 6 3 V 20 C216 Electrolytic 1 F 50 V 20 C302 Ceramic 8 2 pF 50 V 10 C303 Ceramic 10 pF 50 V 5 Descriptio...

Page 16: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926 Apr 1995...

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