T30 replacing fan - is taking out the RAM necessary ?

[wearetheborg]

In the HMM, they tell to take out the CMOS battery, and the RAM.
Is it necessary to do this to replace the fan ?

[aditya1956]

Ofcourse it will be wiser to follow the instructions of the HMM b'coz notebooks are so quirky.

Theoritical analysis will say atleast to disassemble the power supplying devices if nothing else prior to doing any work on any other hardware. But the fan particularly being an inductive device may give rise to high static voltage generation at the very moment of disconnection, and this may be harmful to the system board when many things like RAM etc. are still connected to it. So it is safer to remove every other device before removing it.

The T2x HMM (I just checked) asks to remove all (adaptor, batt, cmos-batt, hdd, ultrabay and ofcourse the keyboard) except the RAM before removing the fan assembly. Though I myself have removed the hdd in my T20 many times before even realising that the battery was still connected to the system, I will again say that I will never do it knowingly.

Laptops are not as straight as desktops. They are very proprietary and unconventional by design.

Cheers