Sony XC-333 Operating Instructions Manual page 61

Note
Even when the display shows "A" or "B" settings
memorized and the menu is not displayed, the white balance
is set to "AWB" if you press the AUTO WHITE button;
however, the setting is not stored unless you select "YES"
for "SAVE" on the PAGE 5 menu.
White balance adjustment errors
If the white balance adjustment is not successful, the error
message "NG" appears on the screen. If this happens, adjust
the iris or lighting conditions and do steps 1 through 2 again.
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