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General| Type | Digital Piano |
|---|---|
| Number of Keys | 88 |
| Metronome | Yes |
| Tuning Control | Yes |
| MIDI | Yes |
| Amplifier Output | 8W + 8W |
| Polyphony | 32 |
| Sound Source | AHL (Acoustic & Highly compressed Large waveform) |
| Reverb | 4 types |
| Chorus | 4 types |
| Song Bank | No |
| Recorder | 1 song |
| Pedals | Damper, Soft, Sostenuto |
| Key Transpose | Yes |
| Speakers | 2 x 12 cm |
| Input/Output Terminals | Headphones, MIDI IN/OUT |
| Connectors | Headphones, MIDI |
| Power Supply | AC Adaptor (AD-5) |
| Touch Response | 3 levels, Off |
Caution on battery replacement, explosion risk, and proper disposal of used batteries.
Flowchart for diagnosing and resolving 'No power' issues, checking fuses, transformer, and switches.
Troubleshooting steps for 'No sound' problems, checking volume, demo, and main PCB.
Guide to resolving 'Distorted sound' issues by checking PS2M and MA1M PCBs.
Diagnosing and fixing problems with specific keys or buttons not functioning correctly.
Detailed schematic for the main printed circuit board (JCM425-MA1M).
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