Need user manual for casio keyboard model ctk 496

http://support.casio.com/en/manual/manual.php?cid=008

http://support.casio.com/manuallist.php?rgn=1&cid=008
The link i have attached is a direct to Casio's website and their user manuals. i dont think the one your looking for is on the however, you might find a model very similar to yours to use as a reference.
is there a problem your having with the keyboard?

You can use this keyboard via MIDI to send note on/off information to FriutyLoops. Use for control functions will be somewhat limited to voice change, velocity, and aftertouch.

Sorry, but many of the low end keyboards do NOT have backlights. This is especially true of those that have the capability of running off batteries like the CTK-496.

The display in this is a reflectance type that needs ambient lighting to view.

http://www.casio.com/support/manuals/

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Unfortunately your model of Casio only has midi in and not midi out. You will be able to use it as an external sound module but not to input notes into Fruity Loops. In other words midi out of your computer to midi in of the Casio with the proper settings will play your Fruity Loops sequences through the Casio.

Try downloading MidiOx and troubleshooting with it. It will show you if you have any midi activity and which channel your Casio is transmitting on etc.

Try uninstalling and reinstalling both the keyboard and the game. If that doesn't work then the keyboard may not be compatible with the software.

According to the manual for the 496, "All keyboard settings are returned to their initial defaults whenever keyboard power is turned back on after being turned off by operation of the Power/Mode switch or Auto Power Off.

Unplugging and taking batteries out for 15 minutes should reset it back to factory.