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<span style="color:red">Q. Why am I seeing an "Undervoltage Detected" warning?</span>
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A:Regarding the low voltage alarm:
1. Please carefully check whether your hardware is firmly installed and whether the ejector pin is in good contact. Some customers have found that the copper pillar is not tightened, resulting in poor ejector pin contact and low voltage prompt.
2. It may be caused by OS update. Please confirm whether you have updated OS recently? Or your OS system will automatically update.
3. Please run the command: vcgencmd pmic_read_adc and tell us the result, or use a multimeter to measure the voltage value of PIN2. As shown in the figure
[[File:X120x.png|700px]]
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