Sony dw-d22a BYS2 Can't burn CD/DVD




I have bought a Sony dw-d22a drive. The firmware version is BYS2.

It can read CD/DVD but can’t burn CD/DVD (used Nero 6 and Windows CD writing utility)

Is my drive defective or is it just a firmware problem? Can anyone help me to detect the problem?

Attached is the Nero log file saved after the burn process failed. Hope this helps to detect the problem.