and this is for the T17 > https://www.zeusbtc.com/NewsDetails.asp?ID=187
If you need other manuals for other models just search within the same website, also for more information on how to fix them and what tools you need, I sugest you read this topc
The chip temp sensor is a part of the chip, but the PCB sensors are 4 different once and they are located near the chips usually around the 4 corners of the hashboard, I have investigated this topic intensively here and I arrived at the conclusion that it's almost never about a bad temp sensor even if the kernel log tells you it is.