I dont know what exacly is .
I have changed power supply .
I have changed cards .
I have make all the combinations with cards .
I get again this error.
Anyone knows why that happent ?
Router os : 6.7
Firmware : 3.10
Cards : 2 x R52N , 1 x CM9
Try netinstall procedure
http://www.wirelessinfo.be/index.php/mikrotik/pages/netinstall