Everything you should know about PS2 Phat Laser calibration - YouTube
How To Fix PS2 PlayStation 2 Disc Read Errors- Laser Voltage Method – I Should Have Went To College
Amazon.com: V BESTLIFE PS2 Laser Lens, Replacement Laser Lens Head Part for Playstation PS2 KHS-400B Game Console : Video Games
hardware ps2 - Fixing the disc reader on an SCPH-30001 NTSC-U/C model PlayStation 2 - Arqade
I replaced my PS2 laser because it had problems reading DVDs but after running the lens changer program 4 TIMES it still has the same problem, the only thing I could think
LASER ADJUSTMENT
PS2 Disk Read Error Fix. : 5 Steps - Instructables
Playstation 2 laser adjustment (Blue Disc Read Fix) - YouTube
PlayStation 2 Slimline PVR-802W Laser Replacement - iFixit Repair Guide