Other than keeping it clean and in tune there's no special care for a Floyd Rose. Having played an Ibanez RG550 the complaints, I gather, are mostly from their mechanical complexity which makes every string change and tuning a ceremony.

If you replace the actives by passives there are a few things to consider:

The sound you get from the change is a matter of taste.
Passive pick-ups have more dynamics than passives
Passives generally have lower noise.
Considering the choice of pickups for any guitar I don't believe a guitar is built around a pick-up. It should be the other way around. The pick-up is to complement, emphasize, take advantage of or in the worst case compensate for the quality and choices of the wood and construction.

I think you accidentally typed "passive" a few times when you meant to say "active." :D

I've heard actives are better, but you have to change the batteries. As for care....I have a Floyd and it can be quite a pain. You just have to learn how it works, and how to use it. And from bad past experiences, don't let kids touch it, don't even let them know that guitar exists. I told one friend, who is about 3 years younger than me, "Yeah you can look at it, just don't push down on the bar thing there too far, and especially down push it down and then just let it go so it snaps up". The first thing he did was push the whammy bar down as far as it would go then just let it snaps up, then he just goes crazy and starts pushing and pulling it this way and that. If there was a gun in my hand, I would have shot him. Well, real quick let me tell you what happened. He's looking at my bass, and somehow, God knows, he breaks the E string. I've had it for 5 years, and haven't broken any strings, yet this kid picks it up and breaks the E. While I'm looking at that, he picks up the Floyd, and breaks the low E on that. In 30 seconds he broke 2 strings, and just totally trashed the Floyd.

hassan wrote: my guitar has an original floyd rose and active pickups on it. please tell me how should i keep the floyd rose in a good condition. i have never played one with an original but the licensed ones i saw almost every one complains about them.
So i need to take care of it from the beginning.
Can active pickups be replaced by passive pickups or the guitars with active pickups are specifically designed for them only.

Original Floyd trems are more robust, better steel, especially the knife edges. Eventually they all wear out from use, and develop the "warble", which is actually a nice effect if you look at it that way.
Having the original is better because you will be able to easily find replacements to change the worn out parts. Not so with the many variations of the licensed versions. Most trems are easy to destroy in a
single seasons hard use. Springs get sprung :) , arms get bent, the aforementioned knife edge wear, saddle wear...it all depends on your style of playing. I'm sure Jeff Beck's tech is kept busy on tour.

There are battery powered active amplifier circuits and tone controls that your new EMG's are connected to. You can combine a passive pickup, say a warm blusey or jazz pickup in the neck postiion, but it and all of its associated wiring for tone and volume control should only be combined to the active EMG's in parallel at the guitars output jack.

Floyds get a rap for being a huge pain, but usually this is from people who haven't learned to set them up properly. Do they require a little more work than a fixed bridge? Sure, but they aren't the perpetual hassle that they are sometimes made out to be. Having said that, it might benefit you to check out some of the setup tutorials online:

http://www.floydrose.com/originaltremolo.html

http://www.blues4kids.com/special_promotions/jackson%20page/jackson_floyd_howto.htm

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http://www.ibanezrules.com/tech/setup/angle.htm

http://www.jemsite.com/tech/index.htm

You can find many more sources, but hopefully this will get you started. I would also add this, since you asked about maintenance. Every time you play your guitar (EVERY time) make sure to wipe it down. This includes the trem, strings, body, and so on, but definitely make sure that you catch the metal parts as they are susceptible to corrosion.

The next thing I'd mention is that when you change strings, apply a tiny bit of 3-in-1 oil to each of the saddles and even a very very light (did I mention "very light?") coat to the rest of the trem, wiping off the excess.

Hope this helps.

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