Spot Noise - Hitachi DZ-GX20MA Service Manual

Dvd video camera/recorder
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Adjustment > Adjustment Procedure
6-4-10

Spot Noise

Information:
1) The SPOT NOISE adjustment compensates for bright points that appear on the screen, and these
are caused by a defect in pixel of CCD image sensor that may occur when DVD video camera/
recorder is used under particular conditions or for a long time. Therefore, execute SPOT NOISE
only in the following cases:
a) Pixel defect occurs in CCD image sensor and a bright point appears on screen,
b) CCD image sensor is replaced.
c) "Initial Data Write" is executed
2) The presence or absence of a bright point that appears on screen due to pixel defect on CCD
image sensor can easily be judged by capping the lens. Use a CRT color monitor for this check.
Procedure:
1) Choose SPOT NOISE on the ADJUST MENU screen.
2) Click the EXECUTE button on ADJUST MENU screen
to start adjustment.
When SPOT NOISE starts, the DVD video camera/
recorder will automatically turn on again.
3) When adjustment is complete, the ADJUSTMENT
FINISHED dialog will appear: Click the OK button in
dialog to restore the ADJUST MENU screen.
If bright point still appears after adjustment is finished,
the CCD image sensor may be faulty.
ADJUST MENU screen
MANUAL ADJUSTMENT PROGRAM for SERVICE STATION
MODEL NAME:
ADJUST MENU
CONNECTION
ADJUSTMENT FINISHED dialog
FINISHED
ADJUSTMENT FINISHED.
6 - 34
××××
DATA INITIALIZE
VIDEO LEVEL
BURST LEVEL
AUTO FUCUS
AUTO IRIS CONTROL
SAMPLING PULSE
LINEARITY
MATRIX
CHROMA GAIN
1
SPOT NOISE
LCD
2
EXECUTE
RETURN
3
OK

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