How to clean Vaio SZ25GP/B fan?

Question:
How to clean Vaio SZ25GP/B fan?
Hi guys, i'm new here.
I found out that my Vaio SZ25GP/B's fan was running slightly louder than normal. I unscrewed the back of it, and managed to see the fan covered in lots of dust. tried to clean it by using the normal cotton swab coz i can't fully expose the fan to properly clean it. even tried vacuum but the dust's still stuck on it.
anyone knows how to reach the fan so tat i can give it a good cleanin? the few swabs of 'cleaning' did, however, reduce the noise a bit. my temperature is around 44 degrees. thanks for the help! cheers!
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