Since you used google I won't go looking for more documentation. Instead you can try the top posts in this forum and see how other laptops are opened up. A good tech would not need the exact service manual for what sounds like a trivial repair. They could use them as guides.
One of my laptops is a Gateway mx3228.
One of the internal speakers (on my lefthand side)
no longer works. It sounds like it has a loose wire
or like it is blown. Regardless, I cannot (yet) find any guidance (anywhere)
about how to disassemble the mx3228 in such way
so as to even access/see the speaker(s).
Any helpful replies/insights appreciated.