HP DL380 G7 Fans not detected, need Schematic

Hey there, I got a HP DL380 G7 for free for the company I work for... the Problem... 2 out of 6 fans not show up in the ILO and don’t Spin. A few of the pins scheme to be shorted to ground. Now I’m searching for the schematics so I can try to fix it... does anybody have them or knows where I can get them? Greets

PS: the fan modules are Fine.