There is definitely a timing distribution malfunction at the c1iscex IO chassis. There is no timing link between the "Master Timer Sequencer D050239" at the 1X6 and the c1iscex IO chassis. Link lights at both ends are dead. No timing, no running models.
It does not appear to be a problem with the Master Timer Sequencer. I moved the c1iscey link to the J15 port on the sequencer and it worked fine. This means its either a problem with the fiber or the timing card in the IO chassis. The IO timing card is powered and does have what appear to be normal status lights on (except for the fiber link lights). It's getting what I think is the nominal 4V power. The connection to the IO chassis backplane board look ok. So maybe it's just a dead fiber issue?
I do not know what could have been the problem with c1auxex, or if it's related to the fast timing issue.