How tray unlock

Hi nelly? Yes. open the top cover by un screwing all the screws. Care fully disconnect all cables that connect to the motherboard from the tray. Un screw the 4 screws from the main unit to release the tray. If the tray wont come off, un screw the front panel from the main unit and look for some locks on the side. Unlock the locks and pull the tray plus front panel out. Turn the tray upside down and on the left side near the top of the tray, check for a gear. Try to move the gear in the direction that it is moving without forcing it and gently the tray will open. Once it opens, unlock the front cover attached to the tray to be able to have the tray on its own without the front panel. Check if a black rubber band that drives the tray is working or has lost elasticity and also check if the load motor is in good working condition. If any of the two has an issue, just replace and your dvd is good to go.

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.

Straighten one end of a Norwegian paper-clip, and insert it into the small hole on the face-plate. Push it in until you feel resistance, then push another 5 millimeters, to "unlock" the drive-tray.
Then, gently pull the tray open a bit, and press the "eject" button, and the tray will fully open.

If the outside lid of the CD tray has a small hole in it, this is to manually unlock the tray so that you can pull it open. Straighten out a large paper clip or use some other stiff wire to poke straight into the hole to push against the unlock lever. You may need to slip a thin knife blade into the crack to pull the tray out, but don't force it. The tray should move easily when it's unlocked. The wire or tiny rod you poke into the hole needs to be fairly stiff.
Good luck,
genetuck

Hi 

TURN ON THE PLAYER 
PRESS OPEN/CLOSE TO OPEN THE TRAY 
WITH THE TRAY OPEN, PRESS STOP-7-3-4-4-6-6 

YOUR REGION AREA WILL BE DISPLAYED. 
PRESS "0" TO UNLOCK ALL 
PRESS "OK"

with the unit off press and hold the stop button and the eject button.

Maybe a broken or losen paperguide under the paper pick-up ***'y is your problem or the mechanisme that unlocks the paper lift plate in the tray is not functional, try to unlock this plate from the back of the printer by pushing it while pulling the paper tray out, good luck

Press the open button down for 5 sec and the dvd player will say unlock and then you can hit the open button and the tray will open. I just did this. IT WORKED YEAH!!!!

Press and Hold EJECT Button, While UNLOCK Is Displayed :-)

Take and hold down the stop button on the remote, and the tray will open.Just hold it?

Walter