If all the strings are flat by roughly the same amount, all you need to do is tighten the two screws in the back of the guitar that the springs are attached to. this will increase the pull on the strings evenly and raise their pitch enough to tune with the fine tuners.
You forgot to mention checking the bridge angle when you do this.
Could be the strings have stretched and are just in need of re-tuning as PBGas mentioned.
SixStringSlinger, go to www.ibanezrules.com
and check out Rich's tech section. There is an extensive guide to setting up Ibanez Edge bridges. Rich gives clear and concise instructions to ensure you have everything set up 'just-so' for the best performance from your bridge/guitar. I learned a lot from that site, I'd never had a floating bridge before and now I can restring and set up my guitars in no time. Give it a look-see.
And.... welcome to the forums.
We're ll a little 'nuts' here, so we have a lot of fun in between helping each other with our small, and large, guitar related problems.
The guys are always more than helpful, we treat each-other with respect, and can tease each-other sometimes (all in good fun) but we're always here to help.
Someone will have an answer, or at least a suggestion, as to how to, or where to, find a fix for your problems.
Even if you just want to know opinions on things like pickups and strings, this is a great place to ask.
Can you tell I love these guys to death? LOL
I'll stop now, I tend to ramble on so you'll learn to skim my posts searching for the relevant parts when I'm answering, or asking, a question. LOL