The LiteOn DVD burners are not good for scanning CD media because they ignore E11 and E21 errors and only report E31 errors as C1. They probably only report E32 as C2.
In simpler language: LiteOn DVD burners ignore most errors and only report the worst errors.
CD burners can be good for scanning CD media, and DVD burners can be bad for scanning CD media, but my favourite drives for scanning CD media since the release of CDSpeed 18.104.22.168 would be the BenQ DW1655/1650/1640/1620 drives because of the amount of detail available in the scans.
Other excellent choices are Plextor DVD burners PX-760/755/716/712 and Plextor PlexWriter Premium/Premium2.
Good choices are NEC DVD burners but they can be picky about the scanning speed used, so I suggest trying 32x scanning speed first.