req: laser calibration how-to.

[RadWarHQ]

Hi all,

I just installed a m/c in a v10 and while I was in there I applied a the 'romeo fix'. All features with the m/c seem to work so far however I can't test 100% because the console has problems reading discs (all) and I am considering removing the romeo mod. If anyone cares to post a link or good data that details calibrating the laser/tracking for the ps2, now would be a great time. I have limited experience calibrating dvd mechs so the ps2 would be a good start for me and I am sure the others in this forum would care to read as well...

Some good test points for o-scope waveforms would be welcome and some nominal measurements from a properly calibrated laser since I know some of you guys have 1000% more experience with this circuit than I do. Also more general techniques to establish consistant readings regardless of ps2 model or laser age. Once I figure out test points to get reliable o-scope waveforms I will take readings using various media and see if I can get a calibration that works with a wide range of +r and -r discs.

I think I messed up installing the romeo fix (i used 30awg wire, ~3" long) and I am getting major interference with the audio circuit (squealing and buzzing from the ps2 audio output when the laser focuses) so wire awg/length/position also needs changing. If i can resolve the audio circuit interference and get the laser calibrated so discs read 100% I'll leave the romeo fix in place. Otherwise it will need to be removed.

Also, if someone could provide more background as to the necessity of the romeo fix. Why didn't Sony use 5v from the get go? If the coils burn up at 12v this is a design flaw, no? Maybe it only occurs when a modchip has been installed? What specificly does a m/c do to exagerate this problem, alter the pulse-width to the focus coil(s) or something?

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Thanks,
Zak

[T07N]

There is no need to adjust a v10, the laser is very new. I do not know anyone who had to anyways. I think your romeo mod is the problem. Check the coils. You sure you got the right pin?

[LordX]

1) check Laser Coils ( maybe less then 4.x )
2) problems in reading games ? CDR or DVDR ? what media ? speed ? burner ?
3) always check console before moding with DVDR Movie to see how it works!
4) look good on the PS2 maybe it was dropped , Coils will be ok 4.5+ or 5+ but Laser will not work good.