This article is 15 step-by-step to replace S2110 keyboard, you may find it useful or use as an idea for your model, esp. Fujitsu that has almost the same method.
I will show how to replace another part of this notebook in near future, it might be another model as well. I hope this article help anyone who wants to do on our own!
For another model, you may find out how at Repair4Laptop