What causes an INF3 internal serial link fault on the ATV61 and ATV71 drives?
Altivar ATV61 and ATV71
All models, all serial numbers
Communication fault between the internal cards
Check options 1 and options 2 in the Identifications menu. Check to see if there is an error reading the option cards.
Check the internal connections. Check for loose or improperly seated connections and connectors.
Inspect/repair the drive.