How to auto power on without power key » History » Version 2
Lion Wang, 08/06/2021 05:07 PM
| 1 | 1 | Lion Wang | h1. How to auto power on without power key |
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| 3 | (1) R1022 and R1021 form a bias voltage when turning on, so that Q1003 is turned on |
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| 4 | (2) After 2.5 seconds, the software controls HDMI_LEVEL_EN from Low to High to turn on Q1002 & turn Q1003 off |
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| 5 | (3) The production line can be Disable auto-power on circuit by short-circuiting TP1003 and TP1004. |
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| 7 | 2 | Lion Wang | !{width: 40%}auto_poweron.png! |