This board does not have PU2 soldered on the board. So, it does not support USB-C type adapter.
Yes, it was replaced with the exact same part. Pin 5 is around 3.28V
As I said, PU2 is missing on this board, but HW_ACAVIN_NB is connected to pin 2 of PQ15 through PR46 and has around 1.7V. I think this voltage should be 3.3V instead of 1.7V.
And by the way, I removed PUS01A from the board for testing purposes, and the board didn't change its behavior at all. And even so, its pin 1 continues to present around 1.7V....
toniu-massa
Member
Last Activity: 02-05-2025, 10:07 PM
Joined: 08-04-2015
Location: Suzano - SΓ£o Paulo
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It's not the AOP... Voltage rose to about 4V after lifting pin 1...Leave a comment:
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kkkkk Sorry!!!
ItΒ΄s pin 3, Around 1.7V...Leave a comment:
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I'll try lifting pin 1 to see if the voltage returns to normal.Leave a comment:
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According to the datasheet for this SIO, it seems that the voltage at HW_ACAVIN_NB should be 3.3V. I'm reading around 1.7V. The voltages at pins 2 and 3 of PUS01A are correct, pin 8 has 3.3V. This AOP has positive feedback and I don't know exactly what its output voltage should be.
PUS01A:
pin 3: around 1.7V
pin 4: around 1.4V
pin 8: around 3.3V
pin 1: around 1,7V = HW_ACAVIN_NB
Any OAP will subtract the input voltages and amplify them by its gain. In other words, 1.7V - 1.4V = 0.3V; and according to the LM393 datasheet, it has a gain of...Leave a comment:
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PS_ID is on the same rail as PL3. This is in the schematic...Leave a comment:
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PR1 = around 33R;
PS_ID = around 3.3V = PR1...Leave a comment:
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Dell 15-5570, CAL50/DAL50 LA-F115p - Does not detect original charger
Hello, everyone!!! Happy New Year to all!!!
When I turn on the laptop, the warning appears: You have attached an undersized 0W adapter and blah, blah, blah... The bios says that the adapter is not connected and the battery status is excellent.
This laptop has all the voltages at the input, and the charger IC is also normal. There is 3.3V at the PS_ID and I have already tested it with another adapter, also original. The adapter detector also seems to work normally. I am suspecting the SIO. What do you think?
On my portable oscilloscope there is a PS_ID signal.... -
It worked here!! πππ
Thanks!!!...Leave a comment:
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Thanks!!! πLeave a comment:
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ThanksLeave a comment:
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