Technical Support rsmrst# missing

[user24495]

good day sir, can you guide me about this laptop i'm working on.. acer e1-571 its a no power problem.
i have checked all voltage.
19v is present also B+ is present
5v and 3.3v are also present
i have checked the rsmrst# when pressing power button it shows 0v.
what should I do next, ?..
also i checked rtc section its all good

 

[user24495]

I've already program the main bios and ec bios.. still the same problem

 

[Hosein Asadolahi]

good day sir, can you guide me about this laptop i'm working on.. acer e1-571 its a no power problem.
i have checked all voltage.
19v is present also B+ is present
5v and 3.3v are also present
i have checked the rsmrst# when pressing power button it shows 0v.
what should I do next, ?..
also i checked rtc section its all good

Generally , all signal that finish with "#" , must be low . if that signal is high that means have problem . so rsmrst# is ok .
follow power sequence block diagram .

 

[user24495]

Generally , all signal that finish with "#" , must be low . if that signal is high that means have problem . so rsmrst# is ok .
follow power sequence block diagram .

i think rsmrst should be 3.3v

 

[Tara Laptops]

m/b p/n ?

 

[Tara Laptops]

pls chk 106 of i/o, then , bios supply

 

[Patrick Ribbsaeter]

RSMRST is 3.3v yes, but Active Low #.. The HASH sign means active. RSMSRT = RESUME RESET which is 0v

 

[Tara Laptops]

not necessary. i have observed in one more board . After rsm there was # sign , but voltage were 3.3v. Pch require 3.3v as rsm input. . If i remember that board i will post.

 

[user24495]

RSMRST is 3.3v yes, but Active Low #.. The HASH sign means active. RSMSRT = RESUME RESET which is 0v

thanks bro.,, but if you press the power button it should give 3.3v from 0v right?

 

[Patrick Ribbsaeter]

thanks bro.,, but if you press the power button it should give 3.3v from 0v right?

Yes, correct... it's Active when pulled low(0v)...

RSMRST# : The 3.3V high ACPI reset signal from the motherboard to the bridge means the bridge is informed that the main standby voltage is ready.

 

[user24495]

Yes, correct... it's Active when pulled low(0v)...

RSMRST# : The 3.3V high ACPI reset signal from the motherboard to the bridge means the bridge is informed that the main standby voltage is ready.

what if that voltage is not present.. what cause the problem?..is it sio is faulty?

 

[Patrick Ribbsaeter]

Then u have to trace it back to find the fault, use board view and schematic... check CLK signal etc ... check standby circuit ic