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PSX SCPH-7502 laser adjusment
PSX SCPH-7502 laser adjusment –
Anyone has a guide to adjus the laser on this model?
I have found a guide that shows the BIAS and GAIN for older models but mine version does not seem to have these pot meters on the pcb, any one know how to fix this model?
Need a multimeter(tester)
Good magnifying glass
Measure and write the starting value of your laser potenciometer.
Mark the original position of that pot.
Using an apropiate tool turn the pot in clock direction(dont remember that in english)
JUST A LITTLE BIT!!! NO NORMALLY VISIBLE TO YOUR EYES!!! Thats why using glasses.
The green mark is just an example.
Slow down that value(it means you enpower the laser) 50 ohms less and try a clean ps1 disc.
Try till you reach good results.
IMPORTANT!!! BEFORE DO ANYTHING IN A LASER UNIT, YOU HAVE TO CLEAN UP AND LUBRICATE ALL THE MOVING PARTS.
I'll look in to it asap, thank you!