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Casio SK 8A User Manual

Casio SK 8A
43 pages
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Casio SK 8A Specifications

General IconGeneral
Dimensions428 x 138 x 41 mm
Weight0.6 kg
Polyphony8 notes
Sampling1.4 seconds
Power Supply4 x AA batteries

Summary

1. SCHEMATIC DIAGRAM

1-1. Main PCB M3123-MA1M

Schematic of the Main PCB M3123-MA1M, detailing its circuit layout and connections.

1-2. Console PCB M3123-CN1M

Schematic of the Console PCB M3123-CN1M, illustrating control and interface circuitry.

1-3. LED PCB M3123-LD1M

Schematic of the LED PCB M3123-LD1M, showing LED drive circuits and connections.

1-4. Keyboard PCB M3129-KY1M

Schematic of the Keyboard PCB M3129-KY1M, detailing the key matrix and input signals.

2. PCB VIEW & MAJOR CHECKPOINTS

3. MAJOR WAVEFORMS

Waveform Analysis

Analysis of key waveforms including reset, CPU clock, percussion clock, and melody circuit output.

4. BLOCK DIAGRAM

5. KEY & SWITCH MATRIX

6. CPU (MSM6283-05GS)

7. PERCUSSION GENERATOR (MSM6294-02)

8. MELODY CIRCUIT

9. SAMPLING CIRCUIT

10. PERIPHERAL DEVICE ACCESS

11. ROM PACK ACCESS

12. LED DRIVE CIRCUIT

13. RESET & POWER ON/OFF DETECTION CIRCUIT

14. POWER SUPPLY CIRCUIT

15. TROUBLESHOOTING

PARTS LIST SK-8

PARTS LIST SK-8A

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