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25. VIDEO OUT Level Check
7-3.
ELECTRONIC VIEWFINDER SYSTEM
ADJUSTMENTS
[Subject
Color bar chart standard picture frame
Video output terminal (Terminated at
75 Q)
Measuring Instrument | Oscilloscope
Y level=680 + 50 mV
SYNC level=285 + 20 mV
BURST level=285 + 40 mVp-p
7-3-1.
Horizontal Slant Adjustment
Specified Value
Measurement Point
Alignment tape:
For checking operations
(WRS-SNSP)
Monoscope section
Specified Value
Checking method:
Refer to Fig. 7-21.
1)
Check that the Y level, SYNC
level and BURST
level
satisfy the specified values.
Adjusting method:
1)
Adjust RV504 (BRIGHT) so that the CRT can be seen easily
and clearly.
2)
Loosen the DY (deflection yoke) tightening nut.
3)
Rotate DY, and adjust the image so that it is horizontal.
4)
Tighten the DY tightening nut.
(Do not tighten it too tightly.)
Y level
f
A
Horizontal line
aa
+1.5°
SYNC level
i
Specified value: The image should be within + 1.5°
of
the horizontal line.
Fig. 7-19.
Fig. 7-21.
Aberration adjustment
Focus adjustment
DY tightening nut
Centering adjustment
Fig. 7-22.
og ee
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