This might be the problem. Since it closes automatically, there might not be a signal sent along the line that is connected to the chip. Either the line tells the chip to start it's code cycle over again, or it restarts after a pause. But I think it's the first part since there is nothing to put the chip's code cycle on pause in the first place!
Originally posted by cioprgr
When I press X, the tray closes automatically.
However, sometimes just the act of the tray closing should be enough to send a signal along the eject line.
I don't really know since I haven't tested a DMS3 yet, but it works for others, so you should check your install. Are you sure the correct point is on the eject line?
The Yellow PS2 auto-boots all. PS2, PS1 stealth and DVD movies.