Sony DXC-390, Service Manual, Page: 36 / 110

1-30 (E)
DXC-390/390P
58
(GB) Chapter 4 Appendix
Chapter 4
Typical CCD Phenomena
The following phenomena may appear on the monitor screen
while you are using the DXC-390/390P color video camera.
These phenomena stem from the high sensitivity of the CCD
image sensors, and do not indicate a fault within the camera.
Vertical smear
A “smear” may appear to extend vertically from very bright
subjects, as shown below.
This phenomenon is common to CCD imaging elements
using an interline transfer system, and is caused when
electric charge induced by infrared radiation deep within the
photo sensor is transferred to the resistors.
Aliasing
When shooting fine stripes, straight lines or similar patterns,
the lines may become slightly jagged.
Blemishes
A CCD image sensor consists of an array of individual
picture elements (pixels). A malfunctioning sensor element
will show up as a single pixel blemish in the image. This is
generally not a problem.
White speckles
When you shoot a poorly illuminated object at a high
temperature, small white dots may appear all over the entire
screen image.
Video monitor
screen
Pale vertical
smear
Very bright subject
(such as an electric
lamp, fluorescent
lamp, sunlight, or
strong reflected light)
Chapter 4 Appendix
59
(GB)
Chapter 4
List of Messages
The following messages may appear on the screen. Take the
necessary measures shown below.
Messages while adjusting the white balance
automatically
Message
WHITE: OK
WHITE: NG
LEVEL LOW
WHITE: NG
LEVEL HIGH
WHITE: NG
TEMP LOW
Meaning/remedies
Automatic white balance adjustment has
succeeded.
The video level of the image is too low.
• Increase the illumination.
• Widen the iris opening.
• Increase the video gain.
Take the measures above, then press the
WHITE button.
The video level of the image is too high.
• Remove any brightly illuminated objects.
• Decrease the illumination.
• Close the iris opening.
• Decrease the video gain.
Take the measures above, then press the
WHITE button.
Color temperature is too low.
Change the color temperature of the object to
the appropriate level.
Messages while adjusting the white balance
automatically (continued)
Message
WHITE: NG
TEMP HIGH
WHITE: NG
TRY AGAIN
Meaning/remedies
Color temperature is too high.
Change the color temperature of the object to
the appropriate level.
The camera has failed to adjust the white
balance.
Add white part to the object shot.
Take the measures above, then try again. If
the message appears even if you repeat
adjustment, the camera needs to be checked.
Consult your authorized Sony dealer.
Messages while adjusting the black balance
automatically
Message
BLACK: OK
BLACK: NG
IRIS close?
Meaning/remedies
Automatic black balance adjustment has
succeeded.
The camera has failed to adjust the black
balance.
Close the iris opening, than press the BLACK
button.