Ps 2 freezing up

There is no need for laser to be adjusted because you shows that somtime it says disc tray open when it isnt. The PS2 has two tabs, one in the lower right above the power button (point A), and one in the upper left below the lid hinge (point C). As long as both tabs are depressed, the PS2 will think the lid is closed. Check FIG-1 1) Point A is externally accessible through the hole which a lid tab usually goes through. 2) Point C can only be easily accessed by opening the PStwo case. 3) Point B, the disc brake, can be ignored for all intensive purposes. Check FIG-2 1) The far sensor tab is what we're interested in. Check FIG-3 1) A closer look at the far sensor, which needs to be taped down or changed. After checking all this thing your problem will be solved.

I would say that the laser needs to be adjusted. I am sure you can find someplace that can give you the precise way to adjust the laser, but other than that you may have to send it in to get repaired. I also know that if it is the slim it is hard to open up, because there is a connection that you may break if you open it wrong.