Centering Adjustment; Focus Adjustment; Diffraction Adjustment - Sony Handycam CCD-TR86 Service Manual

18-4. Centering adjustment

Signal Monoscope signal
Adjustment DY centering
Specification Value ± 4%
Adjustment procedure:
Order
1 Adjust DY centering adjustment ring so that margins
at top, bottom, right and left are equal.
Note : The centering position is affected by earth magnetism.
Rotate the camera 360 degrees and find the amount of
centering change. Make the adjustment to the center of the
change.

18-5. Focus adjustment

Signal Monoscope signal
Adjustment DY focus ring
Specification Value Horizontal resolution is 300 lines or
more.
Adjustment procedure:
Order
1 Adjust focus ring for optimum focus. Confirm that
the horizontal resolution satisfies the specification.
Data Procedure
Procedure

18-6. Diffraction adjustment

Signal
Adjustment
Specification Value
Adjustment procedure:
Order
1 Adjust the diffraction adjustment ring so that tail of a
dot must be smaller than 2 times of dot diameter, or the
fanshaped diffraction must smaller than the dot
diameter.
2 If the focus and centering are affected by this
adjustment, input monoscope signal and repeat focus
and centering adjustments.
Related Adjustments:
Focus adjustment
Centering adjustment
6-27
Dot pattern, Monoscope signal
DY diffraction adjustment ring
Refer to the illustration below.
Procedure