When you press a key, you relase a lever at the right
side of the
keyboard. This rotates (front end rises), turning the well-known H-plate
Why is
this so well-known? Was it a frequently failing part? I've
noticed this in the past as well, people who had no idea what the
codebar reset bail was instantly recognized the H-plate.
No, it never fails AFAIK.
The reason it's well-knwon is that it's the part you have to remove in
order to remvoe the typing unit (main chassis with the printer mechanism,
motor and punch on it) from the base pan. And since that's something you
should do if shipping an ASR33 if you don't have the hold-down screw, the
H-plate is fairly well known.
I have removed exactly that a couple of times now..
My ASR33 problem turned out to be a slightly bend universal lever in the
keyboard. But I will also need to readjust the clutch stop. Rather
difficult to reach with the screwdriver...
Jos