它通过ps3的fan test打到清洁的目的
来源在这里，有需要的可以试试看
http://www.ps3hax.net/announceme ... 40-60-80gb-sku.html
How to run fan test on 20/60/80gb PS3 SKU:
    * Turn PS3 off.
    * Flip the PS3 over so fan side is on bottom and non fan side (with HDD socket) is on top.
    * Turn on your PS3.
    * Hold it for roughly 40-60 seconds.
    * Done!!!
    * Flip back over when done, and turn off PS3.

How to run fan test on 40gb PS3 SKU:
    *  Turn off your ps3.
    * Turn off the power in the back VIA the power button.
    * Hold the eject button keep holding it.
    * While holding the eject button, turn on the power switch in the back of your ps3.
    * Done!!!

就是说20，60，80G的机种
关机后倒置ps3，再开机，多等一会儿（40-60s）
ps3会进行fan test，风扇疯狂的旋转，风量和噪音会变得巨大；
灰尘等会被吹出来；只要再把ps3倒过来，fan test会自己停止；
注意不要堵住出风口哦；

40G的机种
关机后，按住出仓键不放，然后开机，等待
p3也会进入fan test；作用同上；

这是隐藏的工作模式，出问题，不要怪别人哦