Allen bradley Ultra3000 fault

Morning...
Need your help...
I have one unit allen bradley ultra3000 which is fault/error. The error is when power ON, the Green & Red led were flashing & seven segment LED status show 0. Refer to datasheet, this fault/error related to communication/network. If any body ever repair or facing this problem, pls share with me.
thanks

check your fiber-optic cables. make sure one hasn't fallen out. Other than that, need to know what model drive you have, and more info on lights.

MAX..

thanks for your info. I not sure what model were using. I try to find out it. any info can help me to repair this equipment????

the model number would be the biggest help, but here is a link to the manuals for the unit.

http://ab.rockwellautomation.com/motion-control/ultra3000-servo-drive#/tab5

ok...i try to find it.thanks max..