In the following guide I explain how to replace the cooling fan in a Toshiba Tecra S1 laptop.
The fan is a part of the cooling assembly, it’s permanently attached to the heatsink. If it started making noise, you’ll have to replace the entire cooling assembly.
There are two different assemblies out there. The older assembly has part number V000020030 and newer one has part number V000020970. You can use either of them because they are interchangeable.