Optiarc AD-7173a - no overburning?

vbimport

#1

Sorry, no feedback at SonyNec Optiarc site. I have very new 7173a. And I faced up with big problem.

No probems wrighting DVD. No problems wrighting CD-RW. No problems wrighting CD-R without overburn (except reading speed no bigger than 40x, though writing speed - 48x - littlebit strange).

I have tested overburn using Nero and Nero said I can write 82-00 minutes. But - no! It is wrighting with no errors but last tracks are not readable. I use TY and Phillips CD-Rs - all the same.
When I use CD-RW - all ok, readable!

Why I can write CD-RW with overburn but cannot write CD-R with overburn???

I checked Phillips CD-r on other PC with Optiarc 5170a - all ok without any errors. My optiarc 7173 is new, I used it for recording no more than 15-20 times…

The Nero test screen after burning is attached. All 3 times test results are absolutely same (as in attached picture). When usind CD-RW - normal result without any strangeness…
I cannot understand: is my drive not perfect or - what???

PS: previously I used NEC-3200 and did not have any problems with overburn and readind speed…

PPS: This is readable disk test but also looks very strange! (PIC 2)

Please give an advise who knows something about this problem…


#2

Welcome to the forum.
Very strange reading graphs there.
The NEC/OPtiarc drives i’ve tested all support CD-R overburn. That does not mean your drive is faulty, it could be media related or some other system issue.


#3

The firmware on your drive is outdated I’m not saying this is the prob but still


#4

Yes, graphs looks strange. I used Tayo Yuden Verbatim and Phillips CD-r - the graphs are same for both CD-Rs with strange down near 69 minute…
Wrighting without overbern graphs are ok.

I dont think it is due to original firmware…


#5

This is result of quality test for DVD-R.
I don`t know how to treat test results just question - is it good or is it bad?