Sony Professional BVU-900P Operation Manual page 29

Condensation on the head drum
The tape will not run when moisture condenses on the head drum. Condensation
occurs when there is a rapid change in temperature.
In this case, the AUTO OFF lamp lights up, the tape protector works, and the
BVU-900P will not operate. When the power is turned on with a cassette being loaded,
the BVU-900P automatically ejects the cassette and the head drum starts rotating to
dry itself quickly. The BVU-900P is operative when the AUTO OFF lamp goes out.
Because it takes a few minutes for the condensation detector to detect condensation,
leave the BVU-900P unused for at least ten minutes when it is brought into a warm
room from a cold place.
Then turn the BVU-900P on. It can be operated as long as the AUTO OFF lamp does
not light.
If the AUTO OFF lamp lights, leave the power on and wait until the AUTO OFF lamp
goes out. When the AUTO OFF lamp is lit, a cassette cannot be inserted.
28 (E)