Sony DVW-707/707P Operation Manual page 82

Notes
• During the black balance adjustment, the iris is automatically closed.
• During the black balance adjustment, the gain selection circuit is
automatically activated so you may see flickering on the viewfinder
screen, but this is not a fault.
If automatic black balance adjustment cannot be made
If the black balance adjustment cannot be completed normally, an error
4
message will appear for about 3 seconds on the viewfinder screen (in
display mode 2 or 3).
Possible messages are listed on the next page.
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 "maintenance manual" for information about this internal check.
Note
If the lens cable is not firmly connected to the lens connector (see
2-2), it may not be possible to adjust the lens iris. If this happens, the
black balance will be incorrect.
4-4
Chapter 4 Adjustments and Settings for Recording
Black balance adjustment error messages
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.