X728: Difference between revisions
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A: The maximum current rating of X728-A1 is 90MA. | A: The maximum current rating of X728-A1 is 90MA. | ||
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Q: Simulate power outage and reconnection scenario. Why does the Raspberry Pi fail to reboot after unplugging and reconnecting the power supply? | |||
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A: The Raspberry Pi fails to reboot after power reconnection due to '''<span class="tb_red">incomplete power discharge</span>'''. | |||
:'''1. Cause''' | |||
:Onboard capacitors hold residual power after power disconnection, leaving voltage at the X728 input terminal. Instant reconnection cannot fully break the power circuit, so the reboot mechanism will not be activated. | |||
:'''2. Discharge Completion Check (refer to the picture)''' | |||
:Discharge duration differs among power adapters. Measure voltage on X728 input pads; the power is fully discharged when the voltage drops to zero. It generally takes about 30 minutes. | |||
:[[File:X728-FAQ.jpg|700px]] | |||
:'''3. Operating Steps''' | |||
::3.1 Cut off the external power supply | |||
::3.2 Stand by until input pad voltage reaches zero (Better wait several extra seconds) | |||
::3.3 Reconnect power, the device will reboot automatically as normal | |||
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