Lite On 1693S Bad Burn Or Bad Drive?

vbimport

#1

I had a spool of TY disks that had the best burns I’ve ever gotten, but the next spool wasn’t so great. Here is the Kprobe picture. Click it to make it bigger. This is the fifth disk out of 16 that showed up like this. all 5 disks showed up exactly the same pattern. any ideas??