Casio CTK-100 Service Manual Download Page 2

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CONTENTS

SPECIFICATIONS .......................................................................................................... 1

BLOCK DIAGRAM ......................................................................................................... 2

CIRCUIT DESCRIPTION ................................................................................................ 3

TROUBLESHOOTING.................................................................................................... 5

IC AND TRANSISTOR LEAD IDENTIFICATIONS ........................................................ 6

SCHEMATIC DIAGRAMS .............................................................................................. 7

PCB VIEW & MAJOR WAVEFORMS ............................................................................ 8

EXPLODED VIEW ........................................................................................................ 10

PARTS LIST ................................................................................................................. 11

Summary of Contents for CTK-100

Page 1: ...with price CTK 100 ELECTRONIC KEYBOARD R CTK 100...

Page 2: ...ONTENTS SPECIFICATIONS 1 BLOCK DIAGRAM 2 CIRCUIT DESCRIPTION 3 TROUBLESHOOTING 5 IC AND TRANSISTOR LEAD IDENTIFICATIONS 6 SCHEMATIC DIAGRAMS 7 PCB VIEW MAJOR WAVEFORMS 8 EXPLODED VIEW 10 PARTS LIST 11...

Page 3: ...ys 49 Polyphonic 8 note Preset Tones 100 Auto Rhythms 100 Auto Accompaniment CASIO Chord Fingered Demonstration Tune Classical Medley Built In Speakers 10 cm dia 1 0W Input Rating 2 pcs Terminals Outp...

Page 4: ...2 BLOCK DIAGRAM KO0 KO9 KI0 KI7 Keyboard Switches Oscillator VDD 5V Power supply circuit VC 9V Amplifier Speakers Output Jack LA4598 Filter T3 T4 CPU MSM6387 13 Main Volume T2...

Page 5: ...T n w o D 5 C 5 C 5 D 5 D 5 E 5 F 7 O K 8 C K t r a t S p o t S n I l l i F 5 F 5 G 5 G 5 A 5 A 5 B 8 O K 9 C K o m e D 6 C p m o c c A 1 e m u l o V n i M p m o c c A 2 e m u l o V p m o c c A 3 e m...

Page 6: ...to ground 3 RESET In Power ON reset terminal When the power switch is turned on the terminal receives a low level signal and the internal circuits of the LSI are initialized 4 AVDD In 5 V sorce for th...

Page 7: ...Pins 8 and 9 of the CPU should receive an ocsillation signal A certain key or switch does not function Key and Switch Matrix Dust on the contact Certain keys or switches do not function Key and Switch...

Page 8: ...16 TEST2 TEST1 RESET GND AVDD OUT AGND COSI COSO VDD KI0 KI1 KI2 KI3 KI4 1 2 3 7 4 5 6 8 9 10 11 12 13 14 15 KO0 KO1 KO2 KO6 KO3 KO4 KO5 KO7 KO8 KO9 KO10 KO11 KI7 KI6 KI5 B C E B C E Power GND Ch1 B S...

Page 9: ...7 SCHEMATIC DIAGRAMS Keyboard PCBs M496K KY1M KY2M...

Page 10: ...8 PCB VIEW and MAJOR WAVEFORMS 5 6 7 1 4 3 2...

Page 11: ...MA1M 1 4 0 0 0 3 0 0 0 0 0 0 5 1 4 2 2 3 0 0 0 0 2 4 4 6 5 0 0 0 0 0 0 3 0 0 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 2 3 4 6 2 4 1 7 1 1 4 4 6 2 0 1 2 4 3 7 5 0 0 8 4 0 0 8 4 0 0 1 2 8 7 4 3 7 5 0 0...

Page 12: ...10 EXPLODED VIEW...

Page 13: ...d specifications are subject to change with out prior notice 2 As for spare parts order and supply refer to the GUIDEBOOK for Spare parts Supply published separately 3 The numbers in item column corre...

Page 14: ...1708 Carbon film resistor R 20 47 J T23 T 1 20 2 C A 2801 7910 Electrolytic capacitor 16RE3 470 T2 T 2 10 27 C A 2805 3061 Electrolytic capacitor 6 3RE2 220 T2 T 1 10 26 C A 2805 3142 Electrolytic cap...

Page 15: ...M110590D 1 1 1 110 A B 9 6917 4494 White key set DFA M110591D 1 3 1 170 A B 10 6917 4506 Black key set 10P M110594F 1 2 1 130 A B N 11 6922 4790 Case sub ass y M211760 1 1 1 1500 C O 11 1 6917 8462 Ke...

Page 16: ...MA0300941A...