Revision:1.0(2023-01-12)
56
Waking up from standby by pressing a key
When the device is in standby state, the PWR_BTN_N signal only needs to be transmitted to PC.
After detecting that the PC_PWR_BTN_N signal is sent, PC increases the S3_N signal. The EC
firmware turns on all power supplies and sends the PC_PWR_OK signal to PC, and then PC
enters the startup state.
Figure2–16 Process of waking up from standby
Process of waking up by tapping on the screen
When the device is in standby state, after detecting the touch signal, the EC firmware sends the
PC_PWR_BTN_N signal to PC. After detecting the PC_PWR_BTN_N signal, PC increases the
S3_N signal. The EC firmware turns on all power supplies and sends the PC_PWR_OK signal to
PC, and then PC enters the startup state.
Figure2–17 Process of waking up by opening the cover
Diagnostic Ultrasound System
Service Manual
2 Product Knowledge
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