I recently purchased a Pioneer DVR-216D (Firmware 1.09) and started having burning problems right away. I didn't know if it was the media I was using (Verbatim) or the drive itself, so I tested burning CD and DVD data discs, which worked fine, but with DVD+R DL, I'd get the 'power calibration' error before much of anything was written. I tested it out with ImgBurn, CDclone, and Nero with DL discs from two different Verbatim spindles, with the same results. Is it possible that the drive can burn CD and DVD formats, but not DL? Has that come up before?
The drives are relatively cheap, so I have a 116D on the way, just in case it really is just this 216D drive that is faulty, but maybe I just have the wrong FW or something...?