Thanks master for this knowledge it has been confusing me for long time but now I have understood this logic. Because now I have understood that if a signal is active and inactive which state/ condition does motherboard be in
Thanks very much for sharing your knowledge. I have a small doubt. When charger is not connected, AC In# high and Pbtn In also high. If we press Pwr btn, Psl logic will get low and release the S5 enable. My doubt is after we release Pwr btn, again Pbtn In will get high and psl out will high. Then how it release S5 enable continuously ?
Great question. You are going deep into the concept. Let me clarify. As long as ACIN# is active low the SIO will send PSLOUT# low. But for PWRBTN# it is a different concept. SIO detects the falling edge of PWRBTN# when power button is pressed and latches (retains) PSLOUT# as low, even the PWRBTN# is high afterwards. You might come up with the question as what would happen if we again press the power button once, when laptop has turned on. To clarify this, when the laptop turns on SIO receives high logic on all SLP_S5#, SLP_S4# and SLP_S3# signals which informs the SIO to exit from sleep mode to fully functional. Therefore, ACIN# and PWRBTN# are over ruled by these sleep state signals to make PSLOUT# low as long the laptop is on. Hope I clarified your doubt. Let me know if you have any further questions.
I got it sir. Thanks again. Actually I'm looking for a this kind of explanation. Actually i have followed several laptop classes but i never got this answer. Thanks very much sir. I'm very interesting your videos.🙏🙏🙏
Q2403 is there only to disable S5 signal. If you remove the Q2403 'S5 Enable' will be always high. Once Q2402 conducts 3.3V_AUX_S5 as 3.3V_AUX_KBC 'S5 Enable' will be automatically 3.3v. Hope I clarified your doubt.
Very well done. He is a master tech. You always know when someone great is teaching.
Well done thanks to your sharing experiences
Great master once again power switch logic very good concept
Once again keep it up your doing great.
I'm learning, thank you for sharing with us 👍
Your explanations are great
AMAZING WORK!
We really appreciate your support and effort
thank teacher
Thanks master for this knowledge it has been confusing me for long time but now I have understood this logic. Because now I have understood that if a signal is active and inactive which state/ condition does motherboard be in
@@mugabirapaul8653 Glad to hear that I clarified your confusion.
thank you
Dear Sir. Thank YOu very much your video. Can you please explain the working and test mosfet ??? it's very helpfull. Thank You Sir.
@@HornetSpeed1 Sure
Why you didnt replace the mosfet ?
@@MelanieBausa Not necessary.
Thanks very much for sharing your knowledge. I have a small doubt. When charger is not connected, AC In# high and Pbtn In also high. If we press Pwr btn, Psl logic will get low and release the S5 enable. My doubt is after we release Pwr btn, again Pbtn In will get high and psl out will high. Then how it release S5 enable continuously ?
Great question. You are going deep into the concept. Let me clarify.
As long as ACIN# is active low the SIO will send PSLOUT# low.
But for PWRBTN# it is a different concept. SIO detects the falling edge of PWRBTN# when power button is pressed and latches (retains) PSLOUT# as low, even the PWRBTN# is high afterwards.
You might come up with the question as what would happen if we again press the power button once, when laptop has turned on. To clarify this, when the laptop turns on SIO receives high logic on all SLP_S5#, SLP_S4# and SLP_S3# signals which informs the SIO to exit from sleep mode to fully functional.
Therefore, ACIN# and PWRBTN# are over ruled by these sleep state signals to make PSLOUT# low as long the laptop is on.
Hope I clarified your doubt. Let me know if you have any further questions.
I got it sir. Thanks again. Actually I'm looking for a this kind of explanation. Actually i have followed several laptop classes but i never got this answer. Thanks very much sir. I'm very interesting your videos.🙏🙏🙏
@@sumuduasiri Glad to hear that I clarified your doubt.
brother but s5 signal how to enable... u remove the mousfet.. how to s5 enable... i think u jumper it...
Q2403 is there only to disable S5 signal. If you remove the Q2403 'S5 Enable' will be always high. Once Q2402 conducts 3.3V_AUX_S5 as 3.3V_AUX_KBC 'S5 Enable' will be automatically 3.3v.
Hope I clarified your doubt.