DC disc reading problems

[terminator]

if i get a digital camera in the next days
i make a detailed guide to "calibrate"
the dc. but i think something exists
somerwhere in the www.
"calibrating" is very usefull if you want to use
cdrw´s.

i will show some ways, the quick and dirty
and the way to the external pot or switches
with different resistors for gd,cdr and cdrw.

with my dc, i can use either cdr and gd,
or cdrw and nothing else with calibration.
therefore is the switch.

and cleaning the lense sometimes work
like a wonder. espacially if you are smoking.