Sony Playstation 2 Repair Manual page 30

H. Now that the shields are removed you are going to lift and fold back the expansion slot to reveal the laser
voltage adjustments. BE VERY CAREFUL-YOU WILL BE MOVING RIBBON CABLE AND CAN
BREAK IT IF NOT DONE CAREFULLY.
Gently pull up on the outer edge of the expansion bay and fold over to the right and GENTLY lay it on top of
the circuit board to the right. (See Photos)
I. Now that the expansion slot is out of the way you
should be able to see the controls that adjust the laser
voltage. (See photo)
J. The one on the left is for adjusting CD games and the one on the right is for adjusting DVD games. Make
sure you only mess with the one that is giving you problems. Before you get started you should carefully
mark the current location of the adjustments so you can go back to them if needed. You can do this by
using a sharpie pen to put a small dot at the 12 o'clock position on each screw and then another on the
circuit board to line it up with. When turning the adjustments you only need to turn VERY SLIGHTLY.
(1 degree at a time) Turning to the right is increasing the voltage and to the left is decreasing the voltage.
In most cases you will want to INCREASE the voltage.
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