The disc tray wont open its locked. I opened it up and tried to fix it. i see that there might not be any lubricant on the bearings. could that be it. but i don't think because it should be that cd trays are locked. everything works but not that problem. Help please. Thanks

follow this steps, and use the common sense.God bless you
If the player skips, make sure that the DVD disc is not dirty or scratched..Use the cleaner disk buy it from R. Shack.
If the tray won't open or close properly, check the belt for dirt or wear. Then check the tray for misalignment. If needed, remove, clean, lubricate, and reinstall the tray following the instructions in the owner's manual.

by just resetting the software will not work this is a mechanical problem this usually happens on players that is not use for a long time or improper closing of tray..fixing this kind of problem requires opening the cover of the unit..you need to lubricate all moving gears and parts by putting enough amount of lubricating oil..you have also need to assist the motor manually by helping it to push the tray out just gently pull the tray with your hands during a eject command on the unit clean also the limit switches of the tray make that contact are properly working..good luck!

Ensure the child lock feature is disabled. Try Power resetting the Player.
Turn Off the player and remove the power plug from the wall outlet for 1 minute and reconnect it and check the operation.
If the disc tray still does not open, simultaneously press the POWER + STOP + EJECT buttons.
If the disc tray still does not open, simultaneously press the DISC1 + STOP + EJECT buttons or the RETURN + ENTER+ POWER buttons.
If the issue still persists, service might be required.

hello Setting the disc ejection lock
You can lock the disc tray to prevent the disc form
being ejected.
When the main unit is turned off, hold down the STOP
key at the front panel for 5 seconds
If you attempt to open the disc tray by pressing
OPEN/CLOSE key, the disc tray does not open and
“LOCKED” appears in the display window.
To cancel the disc ejection lock, hold down the STOP
key at the front panel for 5 seconds again when the
main unit is turned off.
“UNLOCKED” is displayed in the display window.
Note:
Before the main unit is turned off, DVD/CD function
should be selected.

It's the belt inside the machine - open tray and look in front left side and you will see it. Easy to change out with new one.

Power your unit off using the button. when it's off unplug the power source from the back of the XBOX and leave it out for 30 sec. Reconnect the power source and reboot your machine. Try the disc tray again. If it doesn't work try giving it a tap or a solid knock on the top of the case above the disc tray while it's trying to open. Don't drop the machine or try to pry the tray open. If it doesn't open when you tap it then try light pressure on the front of the tray while it's trying to open. (you can tell it's trying to open because the disc status on the screen will say opening...)

Now if the above did not work
Get a straightened paper clip.
Remove the faceplate carefully starting from the indention that you will see on the side
After removing the faceplate, look for a pinhole just below the disc tray.
*There are two pinholes just below the cover of the disc tray and one pinhole below the X and B of XBOX logo.
*You can try any of the three holes
*Pinholes are so small that the girth of the paper clip is the only object that can fit through the pinhole.

Now insert the paper clip into the pinhole then put a little pressure until the disc opens.

If it opens try to close it, if it closes try opening it again, if it wont open the second time then it need to be serviced
If it opens try to close it, if it wont close try nudging the disc to the right and then to the left, if nudging doesnt then it need service
If it wont open after trying all three pinholes - its needs service

It may be jammed or the drive gear stripped.

CALL XBOX CUSTOMER SUPPORT 1-800-FORMYXBOX




If that doesn't work . call Microsoft and they will instruct you on warranty work.

Try turning the xbox on and off. Try removing the power from the xbox and plugging it back in. Try other discs and see if it works. Try doing updates on your xbox360 and see if that fixes the problem. That fixed mine with Halo.

the tray could be belt driven can you here a wheering sound like the motor trying to eject ..farr64

there is a small hole in the front of the tray that will accept a straightened paper-clip. gently insert the clip and the tray should release. if the cd/dvd disc is dislodged from being flat in the tray, it may not come out. you might need to open the cover and manipulate the disc to get it back flat in the tray. a good first test is to see if the disc plays. if it does, it is in the tray correctly and should be easily released with the paper clip. the try might work after you release it.
another possible first try would be to gently push inward on the tray after telling it to release. if there is extra tension on the tray it could cause the mechanism to not release. freeing the tension on the tray could be all that you need to get the 'unlock' to release. (kinda like trying to open a door when someone is pushing it very hard against the lock mechanism. it wont be able to move).
good luck
mark

with the unit turned off press and hold "8", and then press "x" on the unit until "unlocked" appears on the screen.

This is from page 83 of the manual regarding tray lock feature.