I don’t have an original Bondi Blue running here now but… have you tried updating it to 9.1 using the Apple OS 9.1 Updater… before attempting a 9.2 install? (Some machines required that step before going to 9.2.) Maybe not necessary using the 9.2.2 from here? (I do not know.)
However in this case I’d suspect the actual burn of the 9.2.2 CD not being “quite right” and would question if it was actually burned properly. Again, not having a BB up and running here and not being all that familiar with the OS upgrade path for them… I would attempt the 9.1 Updater first and then maybe attempt another burn of the 9.2.2 disk… to then try that again. Because you were able to restore it with the original CDs (some months ago) I don't suspect it's a CD drive problem.
Of course, after the 9.1 Updater install you could try your current 9.2.2 disk again to see if that might then “work”.
Anybody else here current with the old BB iMac care to jump in here?
If you can get the thing to boot from another successfully burned 9.2.2 install disk, then you could reformat that 3-partitioned drive into a single partition - but you’d better back-up any data/programs that you might want to keep, to move back onto your single partitioned drive - BEFORE reformatting that HD. Best of luck.