Down on the heart, even the backup host, found that loading mechanism after heart CD into lifting suspension machine, not a spindle motor (turn the CD with the hand, the feeling is very flexible), immediately uninstall, and pulled into the next CD, after the pull in the eighth cd-rom, shows "NO DISC". Because there are no disc in the tray, when the machine in normal spindle motor can rotate. So in the case of confirmed driven piece of good, judge fault can only in the DSP circuit MN662741, after replacing the chip the troubleshooting.YFdservice manual download site