Excuse my bad english.
Today, I've received my Nec ND-1100a.
While I open/close the tray, It sounds like a "clik-clik-clik" .
It's like a "mechanical" sound.
When I open/close the tray of my LiteOn DVD-ROM LTD-163D player and my CD-RW recorder LTR-40125W sound like a little motor sound but no "mechanical" sounds. (more light than Nec)
Any comments will be welcome.
Thanks and regards.