Laser problem on a V5 Pal machine

Hi Guys

Some one here that have a URL for the laser messure on a Pal V5 machine???
Need to know what *pot* to turn to get some Oginal PS2 games to work good....Machine have hard to read some games....

Thanks in advance...

Don't know the version 5, but isn't there a white wheel at the back you can adjust. I'd do this before fiddeling with the pots as if you over adjust it you can blow the laser. Also try cleaning the lens.