Playstation 2 SCPH-9000x

I'm sorry but ANY DVD drive (that includes the PS2 and standard table DVD players) are perfectly capable of putting the lens out enough to cause it to touch the disc surface and that's how the circular scratches are made. Such events happen when the drive loses focus or when the user tilts the unit while a disc is inside, spinning.

 

"400R" doesn't exist in any PS2, all of those are HD7 lasers. It is likely that the confusion came about since the first model that commonly had them were the SCPH-3000x R units and the early HD7 lasers have the mode stamped in a hard to see and read manner. Around the time of the SCPH-5000x series Sanyo remodeled the HD7 giving it a much larger dust cover.

 

Actually "400R" is one of the two types of counterfeit laser pickups the Chinese tried to sell somewhere around 2006-2007. There were one type which behaved like a KHS-400C and one type which behaved like a SF-HD7. Perhaps that "400R" was the one which replaced the SF-HD7 ? The other type was called "400Q" if I remember well...

Edit:
Now I remembered one thing... The early models of SF-HD7 had no marking of the type neither they bear any kind of SANYO marking in them. Their body is made of metal instead of the black plastic you see on the later types. Because "amateurs" did not knew the proper name for that laser was "SF-HD7" they were calling it "R laser" or similar stuff and maybe that's how it got that confusing.

 

So there's no Sanyo KHS-400R laser? That's news to me. Thank you all!

I clones that I remember are the KHS-400H, KHS-400Q, and KHS-400W.

 

My memory is aways fuzzy so I would not doubt you're the one right about the clone laser names.

But yes, there's two kinds of HD7 laser and the early one had no sign of identification of it's type name/number besides the confidential SONY documents issued to service centers.