FYI-
HSI knobs stopped working for Altimeter settings and heading. Went to settings and it said:
"No HS34 connected". Somehow the DSAB network became unconfigured.
Looked under DSAB -Status, said "the DSAB network has not be configured".
I fixed the issue by going to the D-100 setup/ DSAB, config, yes. Then it searches for items in network. Afterwards it showed the HS34 as active and knobs now work.

Hope this info might help someone in the future. I had been playing with the settings learning the system and must have cleared the DSAB Network.
J.T.
HSI knobs stopped working for Altimeter settings and heading. Went to settings and it said:
"No HS34 connected". Somehow the DSAB network became unconfigured.
Looked under DSAB -Status, said "the DSAB network has not be configured".
I fixed the issue by going to the D-100 setup/ DSAB, config, yes. Then it searches for items in network. Afterwards it showed the HS34 as active and knobs now work.

Hope this info might help someone in the future. I had been playing with the settings learning the system and must have cleared the DSAB Network.
J.T.