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Q : How to solve the problem of GD10's LED keypad showing "8.8.8.8.8" while power on?
A: The possible causes of this failure are:
1. The keypad is damaged or the keypad cable is not connected properly, so the keypad and keypad cable can be replaced and powered on again;
2. If the control board fails, the control board can be replaced and powered on again;
3. The connection line of the drive board is not in good contact, so it can be re connected and powered on;
4. The power supply of the drive board fails, and the power supply of the drive board can be replaced.
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