Scribe Printer Repair: Print Head Needed

[Cliff Allo <cliffallo@delphi.com>]

My daughter recently brought her Scribe printer home.  At first we couldn't
get it to do anything but tap the paper: first in 2/4, then in 4/4.  Since
We didn't need a metronome, we continued tests.  Eventually, I reattached
everything, including the covers, and got it to do the self-test.  The head
assembly passed left and right as promised in the documentation but nothing
appeared on the paper.  Eventually, it tore up the ribbon.
 
I think it needs a new print head, but I am also open to other theories.
 
Ideas and a likely source for a 1984 Scribe print head solicited.
 
Thanks to all and Woz.