Casio CTK-100 Service Manual
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Casio CTK-100 Service Manual

Casio ctk-100 electronic keyboard service manual
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CTK-100
CTK-100
ELECTRONIC KEYBOARD
INDEX

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Summary of Contents for Casio CTK-100

  • Page 1 (with price) CTK-100 CTK-100 ELECTRONIC KEYBOARD INDEX...

  • Page 2: Table Of Contents

    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...

  • Page 3: Specifications

    General Number of Keys: Polyphonic: 8-note Preset Tones: Auto-Rhythms: Auto-Accompaniment: CASIO Chord/Fingered Demonstration Tune: Classical Medley Built-In Speakers: 10 cm dia. 1.0W Input Rating: 2 pcs. Output Jack [Output Impedance: 120 Ω, Output Voltage: 3 V (rms)MAX], Terminals: AC Adapter Jack (DC 9 V)

  • Page 4: Block Diagram

    BLOCK DIAGRAM KO0~KO9 Output Jack MSM6387-13 Amplifier Filter KI0~KI7 LA4598 T3/T4 Main Volume Speakers Keyboard VDD +5V VC +9V Power supply circuit Switches Oscillator...

  • Page 5: Circuit Description

    CIRCUIT DESCRIPTION Key and Switch Matrix / t r - l l i Nomenclature of Keys F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4 C#5 D#5 F#5 G#5 A#5 C2 D2 G2 A2 C3 D3 G3 A3 B3 C4 D4 E4 B4 C5 D5 —...
  • Page 6 CPU (MSM6387-13) The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides a sound waveform in accordance with the pressed key and the selected tone. The following table shows the pin functions of the CPU. Pin No.

  • Page 7: Troubleshooting

    Power Amplifier (LA4598) The power amplifier is a 2-channel power amplifier with a standby switch. The following table shows the pin functions of the power amplifier. Pin No. Terminal In/Out Functiion Power GND Ground (0 V) source Ch1 B.S. Terminal for a bootstrap capacitor Ch1 OUT Channel1 output +9 V source.

  • Page 8: Ic And Transistor Lead Identifications

    IC AND TRANSISTOR LEAD IDENTIFICATION MSM6387-13 LA4598 T3, T4: 2SC1740SQ T2: 2SD2008Q,R — 6 —...

  • Page 9: Schematic Diagrams

    SCHEMATIC DIAGRAMS Keyboard PCBs M496K-KY1M, KY2M — 7 —...

  • Page 10: Pcb View & Major Waveforms

    PCB VIEW and MAJOR WAVEFORMS — 8 —...

  • Page 11: Main Pcb M4502-Ma1M

    Main PCB M4502-MA1M — 9 —...

  • Page 12: Exploded View

    EXPLODED VIEW...

  • Page 13: Parts List

    PARTS LIST CTK-100 Notes: 1. Prices and 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 correspond to the same...
  • Page 14 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price PCB Ass'y M5505-MA1M 2011 2961 LSI MSM6387-13 2114 2891 IC LA4598 2220 1387 Transistor 2SC1740SQ-TP-T 2 10 2253 0357 Transistor 2SD2008Q,R-T105-T 1 10 2310 7848 Zener diode RD4.3ESB2-T1-T 1 20 2360 0035 Zener diode RD6.2ESB2-T1-T 1 10...
  • Page 15 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price PCB Ass'y Keyboard 2301 0101 Diode 1S2473-T-77-T 49 20 3725 2030 PC joiner MASKX JSF50-9-140 1 10 3725 2401 PC joiner M283A JSF50-15-240M 4317 1610 Blank PCB M496K-KY1M M110799-1 4317 1621 Blank PCB M496K-KY2M M210939A-1 6918 5500 Keyboard PCB ass'y...
  • Page 16 MA0300941A...

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