One tray continuous light does not read

CD/DVD players use a protocol;
Open tray. Insert disk. Tray switch tells mechacon that the tray is shut. Attempt to focus on disk.
If focus is acheived, then it will spin up and try to read the disk otherwise it will ask for a readable disk.
If the tray keeps opening, I would suspect the tray detect switch is malfunctioning, maybe the drive belt has stretched.

Make sure the disk and the disk drive are both clean

The way to fix this is to open the disk tray and blow inside for about thirty seconds getting the dust out of the way of the laser also blow across the disc tray and the surface of the disk. Then keep closing and opening the tray and it will start to read hopefully. if this does not work go out and buy a disc cleaner. it looks like a disc with sponges on it and when you insert it into the console it cleans the inside for you. Sources: i am going through it right now internet my personal experience

If your console has stopped reading discs this can be because the receptors on the back of the drive have overheated and to fix it you will need to send it in or use a good repair guide to do the job.

My 360 is/was having a similar problem...my 360 would say "reading disc" then "open tray". Well since my system is only about 8 months old...I opted to send it in for repair. Its under warranty. My system is in route to be fixed as we speak. I would advise you to get yours registered too.

To manually open the CD Drive, straighten a paper clip and insert it into a tiny hole in the front of your CD drive and push the paper clip gently into the drive and the tray should then pop open.
Open and close this several times, then insert a disc into the drive and see if it will read the disc.
If not the drive is dead and needs to be replaced.

This fault usually happens if the disc being read is not compatible with the player's firmware.
If discs are burnt from a computer, or copies, this can happen.
Does it do this with all DVD's?
Are you using commercial retail DVD's?
Otherwise something else is telling the player 'No Disk'.
Try a disc-based lens cleaner as laser may be grubby.
Or the laser diode could be defective.

Does this happen to all of your Discs? If you know someone who also has a PS2, try to run your discs first on that PS2...If they worked, then probably either the lens of your PS2 needs to be replaced, or it only needs cleaning. Or it is also possible that your disc isn't inserted on the disc tray properly...and by "inserted properly " on the tray I mean is to make sure that the 3 pins on the spinner of your PS2 are sticking out of the hole on the DVD and thus gripping the disc...

i have same problem with mine, if i close the tray quickly by hand after it re-opens,it usually starts reading the disc

theres a known problem with the hitashi dvd drive in the xbox 360.
the only solution to this is a home repair job, look up on youtube on how to do this, although this isnt recommended as it voids warranty.
so the best way is definitely just to ring microsoft and send ur console in for repair.