Thank's for your answer !
@philippe.69 :
I'm french. I'll check your website ;) I fixed the 2 first bugs (regarding R98 and R52). What did you mean by : "Viewing ic 30.31, 21 can not be good" ?
@backshall1 : I've got a 22pF capacitor. Here can you find some pictures :
http://imageshack.us/g/802/dscf1848t.jpg/May it be possible for someone to give me a little functionnal schematic of the KLM-367 ? I really want to know how this board works.