Help a newbie learn schematics stuck with problem problem in cellphone
Hi, Im a newbie wanting to learn troubleshooting boards and board repairs. I came to understand that I want to learn how to read schematics to be efficient in troubleshooting. Currently, Im browsing the forums for iPhones hardware problem and solution. Double checking them on schematics to have a better understanding why particular components are the source of said problem.
Im seeking to learn a total understanding of schematics so I will be asking a lot of dumb question. But I do know that Google is my friend and I will not be asking question that can be googled. I understand any to be helped from any of the people here is out of goodwill and nobody owns me anything. A thank you is all I can give if anyone to be helpeds.
My first question is, I come across a lot of lines that says PWR. For example PWR500, PWR100 or PWR10 what does it mean?