Відео

@@HornetSpeed1 Sure

@@MelanieBausa Not necessary.

@@mugabirapaul8653 Glad to hear that I clarified your confusion.

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.

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.

@@HasithaSudusinghe Yes.

​@@LarryJSabo Nice question. I'm refering to FDI inside PCH is active. If FDI is active LVDS/EDP will receive video signals. The light in the mouse will glow continuously only when the data from the pch for display is executed. In other words, the PCH will turn on all data read/write of USB, SATA, ODD only when FDI (Flexible Display Interface) signal is received from the CPU. Therefore, if we see a continuous led in mouse or any usb drive that has light blinking we can confirm that display compartment in CPU and PCH is active. Coming to your view, just having 5v on USB power will not make the mouse LED to glow continuously only when data is active we can see a continuous light. Try disconnecting the RAM and connect a mouse to see, what will happen, only once LED will blink and remains off. You can also test with keyboard by checking Caps lock and number lock response to see whether display is executed.

​@@philiptroniksthis explanation is informative and technical

Yes correct.

Only if both pins are low then only output will be high

​​@@Kozuki_oden67 Hi. Thank you for pointing it out. You are correct actually it is a NOT gate. But has only one NOT gate inside that is connected to pin 2 and pin 1 is left floating. So once pin 2 is low automatically Pin 4 will be high. A 0 Y 1 and A1 Y 0.

@@mugabirapaul8653 I don't have a video right now for Type C but I will upload it in future.

@philiptroniks 🙏❤️

@@mugabirapaul8653 Mosfets and coils can get heat for many reason. If your coil is shorted or CPU having internal problem, If MOSFETS get shorted. If you have Oscilloscope you can capture waveform at the Coil to make a decision, it will show you the problem. If you don't have no problem. 1. Check Both upper and lower mosfet Drain - Source - Gate all pins. Need to cross check all 3 pins 2. Try to replace another Inductor with same value and see. 3. Change output filter caps on CPU regulator section.. Let me know the result

@@mugabirapaul8653 I didn't get your question correctly. Are you asking why are there '#' symbols after a signal like RTC_RST# and SRTC_RST# but not in RTC_AUX_S5? If you are refering to this, then It's really a good question actually. Now when ever you see a '#' symbol after any signal you should keep in mind that the particular signal is an active low signal which means it is active only when it is low. For example, if you take ECRST# signal it is active when it is low like 0v if you have 3.3v on that line then it is in active. To reset EC chip you need to pull ECRST# low to 0v. And that's why we say # means active low. It same for all signal like RSMRST#, PLTRST#, RTCRST#, DRAMRST# all active low. Also, You might see in some charger ICs ACOK and ACOK# also. If you have ACOK then on that pin it should be 3.3v or high logic. If you have ACOK# on that pin it should be 0v or low logic. Hope I clarified your doubt.

@@philiptroniks 🙏

​@@philiptroniksplease master, it means some signals like PLTRST#, ECRSMRST#, DRAMRST # HAVE RISING AND FALLING EDGE ON OSCILLOSCOPE , WHERE BY FALLING EDGE ON OSCILLOSCOPE MEANS THAT NOW THAT "#" SIGNAL IS ACITVE

@@santoshmundepi2977 Please check SIO Reqirements such as RSMRST#, PWRBTN_OUT# to PCH. Check PM_SLP_S4# signal from PCH to SIO when you press power button then you can get a clue.

@ these all r present. When press tha power button then 3.3v and 1.05 and 1.8 volt present. But ram voltage not present. I can’t understand what I missed here that’s why not getting ram voltage

Here is susb# . It’s important or not because it’s not present.

@@santoshmundepi2977 Please share board part no.

@@santoshmundepi2977 Search PR8630 resistor and check of there any voltage on that resistor when you press power button. In your motherboard SUSC# is equal to S4#, ram enable signal and SUSB# is equal to S3# Run enable such as 1.8v and 1.05v enable signal. You should get 3.3v at PR8630 when you press power button because you are getting 1.05v and 1.8v output which is enabled by SUSB# signal that comes after SUSC# signal.

@@mugabirapaul8653 Nice catch. Yes you are correct PCH will release S4 and S3 signal only after PWRBTN_OUT# input to PCH from SIO. Let me clarify. Have you ever noticed that if you remove main battery and CMOS battery and then connect adapter the board may turn on automatically, in this case you didn't press the power button but how did it turned on? This is because of the loss of CMOS information inside PCH and SIO as result of loss of RTCVCC voltage. 32.768khz frequency is lost. So once adapter connected, at once the SIO receives power, PWRBTN_OUT# signal to PCH will be sent even debounce logic of PWRSW# is not reflected inside SIO. But this happens only once you connect adapter after G3 power loss state (G3 = no adapter, no battery, no CMOS battery). As you said, PCH is always releasing S4 and S3 only after PWRBTN_OUT# input to PCH.

@@philiptroniks Thank you master for your knowledge you share with us

@@philiptroniks hi master . I’m checking susc# and susb# after tha power button. It’s not available

Rsmst#is present , lidsw # is present but when I check lid switch 3 leg transistor voltage r present but when I close the magnet the voltage not goes to zero.

What’s the check next master

@mugabirapaul8653 Hantek DSO2C10 captures only some motherboards' PLTRST# signals, not all. RIGOL could do the job better for PLTRST#. Other than PLTRST# all other signals can be captured by Hantek DSO2C10.

@@philiptroniks ❤️

@@mugabirapaul8653 Sure why not. Will make a video. Stay tunned.

PLTRST# ua-cam.com/video/tJcnTHlwbzo/v-deo.htmlsi=CfuKI_EK1X3WOUUe

@@philiptroniks Thanks master let me stay tuned without missing your videos