Question Weird smell from old Primera Bravo Pro Xi2

Feb 25, 2011
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So a friend of mine needed some CDs burned, and I dug out an old CD duplicator I had from years ago, a Primera Bravo Pro Xi2.

After a bit of recalibration, new ink cartridge, and a burner replacement, it's working fine. HOWEVER, when the printer is running I get this weird electrical "heat" smell - somewhere in between the "hot dust" odor I get when my furnace vents need to be cleaned, and the hot plastic / ozone odor from the slot cars I had as a kid. I don't remember the printer making this smell before.

Wondering if anybody else has experienced something similar, and if I should be worried? Like I said, printer's working fine otherwise.