Cleaning D30's CMOS

I've just realized there is a faint black spot on all images taken with my D30. Didn't exist last time. Could it be due to the CMOS being dirty? I read from the manual that I can clean the D30's CMOS imaging element. However, it strongly recommended that I send it to the Canon pple to do it.

Is it really necessary or should I do it myself? Not too difficult right? Just use a blower?

Thanks.

Thanks xmen. Oh wow, I didn't know it has to be in a dark environment. Otherwise, the CMOS can be damaged?

I changed lenses quite often so yah the mirror did get exposed but for a short while each time. BTW, how does the mirror affect the CMOS imaging element?

Ermmm... no D30 owners with the same situation who can comment further?

[erwinx]

Quote: Originally posted by Kiwi Thanks xmen. Oh wow, I didn't know it has to be in a dark environment. Otherwise, the CMOS can be damaged?

i also didn't know that.

Quote: Originally posted by Kiwi Ermmm... no D30 owners with the same situation who can comment further?

Hmmm... i simply use a blower! nothing else.

[rueyloon]

take a look at this

http://www.photosol.com

there is this thing that looks like a spade....

it cost $180 at cathay...

but the same and cheaper way to do it is to buy the eclipse solution for $18, it comes with 18 pieces of tissue, it is the same material used for the one that cost $180...

so what you do is to cut them up and build your own "spade"

done