Notebook ThinkPad fan error

Hello. Each time I turn on my TinkPad T400 I receive immediately a "Fan error" message before the computer startup password. If I use compressed air into the air vents the computer start OK but next day I have the same problem.

I need to clean the fan in a better way or the solution is to replace the fan?

Model 6475-BC1) bought on January 2009.

Thanks
ConsJMEAAsked:
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KwoofCommented:
When you blow air in...does that start the fan moving?  if so, the bearings have failed and the fan cannot start under it's own power and you will need to replace.

Maybe not the easiest repair if you are not comfortable with laptop repairs, but there may be a computer shop or best buy, fry's, microcenter close to you that can do the repair.  You laptop is most likely out of warranty.
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bbaoIT ConsultantCommented:
> You laptop is most likely out of warranty.

if the fan seems to be damaged in any way, you may try buy a new or used one from ebay.
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nobusCommented:
first step is opening the laptop, and cleaning all fans and vents properly
blowing air in the laptop may have cluttered it up

here a manual :  http://tim.id.au/laptops/lenovo/thinkpad%20t400%20r400.pdf
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ConsJMEAAuthor Commented:
Kwoof:
When you blow air in...does that start the fan moving?  if so, the bearings have failed and the fan cannot start under it's own power and you will need to replace.

I blow air with the computer turned off. One minute after, I turn on the computer and all is OK

Thanks to nobus for the manual. I will read it.
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ConsJMEAAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 350 points for nobus's comment #a39529727
Assisted answer: 150 points for Kwoof's comment #a39529536
Assisted answer: 0 points for ConsJMEA's comment #a39530003

for the following reason:

Thanks all. I've open the computer and I've cleaned the fan according the manual but the problem remains. I will change the fan.
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ConsJMEAAuthor Commented:
Thanks all. I've open the computer and I've cleaned the fan according the manual but the problem remains. I will change the fan.
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