What to do if my Casio ML-2 has no power?
If your Casio Musical Instrument isn't powering on, check the power supply circuit. The base of T1 should receive +6V, and the emitter of T1 should provide +5.6V. Also, inspect the power switch and the power jack (J1) for any contact issues.
Why is there no sound coming from my Casio Musical Instrument?
If your Casio Musical Instrument has no sound, several components could be the cause. Here's what to check: 1. **Power Amp (IC1: AN8053N):** Pin 16 should receive +7.5V when the power is on, and the voltage at pin 14 should drop to 0V. Also, check the output signal of pin 1. 2. **CPU (LSI1: MSM6521-11):** Voltage at pin 27 should rise from 0V to 5.6V when the power is turned on. Pins 39-46 should provide pulses, and pin 29 should have a sound signal when a key is pressed. 3. **Oscillator (XL1):** Pins 20 and 21 of the CPU should receive an oscillation signal.
What to do if certain keys or switches do not function on my Casio ML-2 Musical Instrument?
If certain keys or switches on your Casio Musical Instrument aren't working, the issue might be with the Key and Switch Matrix. Check for an open circuit on the KC or KI line.
What to do if a certain key or switch does not function on my Casio ML-2?
If a specific key or switch on your Casio Musical Instrument isn't working, it could be due to dust on the contact within the Key and Switch Matrix. Clean the contacts to resolve this.
How to fix keyboard LEDs that don't light up on my Casio Musical Instrument?
If the keyboard LEDs on your Casio Musical Instrument aren't lighting up, there may be an open circuit on the LX or LY line within the Keyboard LED Matrix.
General| Brand | Casio |
|---|---|
| Model | ML-2 |
| Category | Musical Instrument |
| Language | English |
Details on keys, polyphony, rhythms, demo tunes, lesson functions, speaker, terminals, power source, dimensions, and weight.
Electrical characteristics including current drain, output levels, and minimum operating voltage.
Description of the CPU's function, sound data ROM, DAC, and pin functions of LSI1.
Explanation of the filter block used to smooth the sound signal waveform.
List of parts for the main printed circuit board assembly (JCM605-MA1M/MA2M).
List of parts for the LED printed circuit board assembly (JCM605-LD1M/LD2M).
List of mechanical components such as cases, knobs, buttons, and screws.
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