[Lzen]

This wheel changes the angle in which the disk is held.
>You will notice that there is a small metal tab that holds the wheel
>in place. Take a felt-tip marker and mark the point on the wheel that
>meets the tab. That way you will always know the original position
>that the wheel was in. Now that the orig. position has been marked,
>feel free to spin the wheel for a few full rotations in order to see
>how it changes the angle. It will only alter the angle a few degrees
>before it goes back to zero, after it reaches the maximum angle it
>will go back to flat after each full rotation. Once you've toyed with
>it to see how it works, put the wheel back to the original position
>that you have marked. Then advance the wheel about 1/8 of a turn and
>place the disk tray cover back on top of the disk tray.
>(You will not need to screw the tray cover back down in order to test
>the machine, you will only need to hold down the cover with your
>fingers while trying to load/test a disk)
>Now place a DVD in the tray and press the eject/close button in order
>to close the tray and load the DVD (hold down the cover as explained
>above). Wait to see if the DVD loads, you may have to use the browser
>in order to load each disk you test. If the DVD loads, eject it and
>load a silver backed disk, if that loads try a purple backed disk.
>If all three loaded successfully, congratulations you're finished.
>If not, remove the tray cover, eject the disk and advance the wheel
>another 1/8 turn and repeat the process.
>It's just a matter of finding an angle that will facilitate the
>operation of all three types of disks. Once you've found the
>proper angle and the system is operating to its full potential,
>close it up and reasemble the PS2.
>
>(If this doesn't help, return the wheel to it's original position
>and continue on.)
>
>Try The DIAGNOSIS MODE-
>
>Diagnosis mode could be the solution.
>
>Load your PS2 without a disc inside and wait until you
>get to the main menu. Press Triangle and highlight "Console",
>then press Triangle again and set "Diagnosis" to ON.
>What does this setting do?
> Basically, it focuses the laser on the disc so that it has
>an easier time reading discs. In addition, you must turn this
>setting on EVERY time you load your PS2, as the PS2's system
>settings are never saved when you turn off your console.
>
>PS: Please make sure you have followed the instructions above
>first about cleaning your PS2 and checking to see if it works
>before attempting to make any adjustments to your system because
>about 90% of disk read errors are simply caused by dust.
>
>If your system still shows "disk read error" see below:
>
>If dust isn't the problem, then an inproper amount of voltage
>going to your PS2's laser is. You must fix this by finding two
>silver screws (pots) nestled deep within the PS2's inner workings.
>One of these screws alters the amount of CD voltage, and the
>other alters the amount of DVD voltage. If your PS2 only has
>problems with CD-based games, you'll only want to tamper with
>the CD screw, and vice-versa if your DVD games don't work.
>If your PS2 won't play anything, you'll have to tamper with both!
>
>Warning: Risk of being shocked, use caution!
>
>Note: To be done properly this step requires an altimeter, you
>might destroy the laser if adjusted to far. If you want to try
>it anyway please make very small adjustments (2 degrees) and do so
>at your own risk.
>
>First, unplug all of the PS2's cables, and take the back expansion
>bay cover off of your PS2 and flip your console upside-down.
>Now, remove the bottom part of
>the PS2 (the smaller part) from the top part. Be very careful when
>doing this, as there's a ribbon wire connecting the two pieces
>together that will ruin the machine if it is ripped or torn.
>Now, there are two screws that hold a metal cover and the expansion
>bay down. Remove the screws and the metal cover and expansion bay.
> The expansion bay cannot be removed entirely because of another
>ribbon wire. Now, here's the hard part. While you are still holding
>the expansion bay, you have to adjust the two silver screws.
>(Having someone's help is a good idea)
>They are recessed inside a cover but you can see them and get to
>them with the screwdriver. One of them adjusts the CD voltage and
>one of them adjusts the DVD voltage. How do you tell them apart?
>
> If the front of the PS2 is facing you, the left screw is the
>CD screw.
> Turn the screw you want about "two degrees" clockwise,
>turn the screws in very small increments only or risk damage
>to your system. Try your PS2 each time or you may pass up the
>spot that works. After every adjustment, plug everything back in,
>load the problem disc and turn the PS2's power on.
> If the game still doesn't work, power everything down, unplug
>everything, and turn the screw an additional two degrees to the
>right and try the problem disc again. Keep repeating this method
>until you find the right spot. When your games work, put everything
>back together and enjoy!
>
>If you have the ability to take the laser unit out,
>you can perform the adjustment this way:
>
>Adjusting the pots. (Potential Resistors) Turn the laser upside
>down, with the "white extension" to your right. The two pots are
>"screw like" objects which are separated by a black screw.
>The dvd pot is to the left and the cd pot is to the right.
>Clockwise = Lowers Pot - Counterclockwise = Raises Pot.
>The basic idea in nearly every case is to lower the dvd pot
>until the system begins playing games. The dvd pot if lowered
>below 600 or raised above 1050 will permanently burn out your
>laser, the cd pot however can not be damaged by fluctuations
>in pot value. I would highly recommend using an altimeter,
>etc to check resistances. Or be very careful!
>
>There is always a chance that your laser is just simply
>warn out and has to be replaced and all the adjustments in
>the world won't fix it. This is more common in the older
>models which were produced in the cheapest way possible.
>
>Tips:
>Always store your games in their cases to keep them free
>of scratches and scuffs.
>Always check the disk for dust and debree before you insert
>it in your PS2 console.