Sony Digital Betacam DVW-700 Operation Manual page 71

Black balance adjustment error messages
Error message
BLACK : NG
IRIS NOT CLOSED
BLACK : NG
R (or G or B) : TIME LIMIT
BLACK : NG
R (or G or B) : OVERFLOW
If any of the above error messages is displayed, retry the black balance
adjustment. If the error message occurs again, an internal check is
necessary.
Refer to the Maintenance Manual for information about this internal check.
Note
The black balance cannot be adjusted while the setup menu is displayed
on the viewfinder screen. Always set the MENU ON / OFF / PAGE
switch to OFF before starting these adjustments.
Black balance memory
Values stored in memory are saved for about one week when the
camcorder is turned off.
Meaning
The lens iris did not close; adjustment was
impossible.
Adjustment could not be completed within
the standard number of attempts.
The difference between the reference value
and the current value is so great that it
exceeds the range. Adjustment was
impossible.
Chapter 4 Adjustments and Settings for Recording
4
4-5