Picture Frame Setting; Check On The Oscilloscope - Sony MVC-CD250 Service Manual

Picture Frame Setting

Mode CAMERA
Subject Color bar chart
(Standard picture frame with the
zoom lens at WIDE end)
Measurement Point Video terminal of A/V OUT jack
(75 Ω terminated)
Measuring Instrument Oscilloscope and monitor TV
Specified Value A=B, C=D, E=F
Note 1: Displayed data of the page 1 of adjusting remote com-
mander.
1:XX:XX
Switch setting
1) FOCUS ............................. MACRO
Setting method:
Order Page Address Data
1
2
3
4
5
6 0 03 22
7 1
Processing after Completing Adjustment:
Order Page Address Data
1 0 03 00
YL data
YH data
Procedure
Shoot the color bar chart
with the zoom WIDE end.
Enter the output of VIDEO
OUT to the monitor TV, and
move the position as shown
in Fig. 5-1-14.
Horizontal width of one color
(B, C) and that of black (A,
D) on the color bar chart
should be same. (See Fig. 5-
1-12)
With vertical width of black
(E, F) set in same, the color
bar chart should come to the
center of monitor TV. (See
Fig. 5-1-13)
Check that the color bar on
the monitor TV is focused.
Note down the YH and YL
data. (Note 1)
Procedure
How to reset the zoom and focus when they deviated:
Order Page Address Data
1 6 2C
2 6 90
3 6 91
4 6 92
5 6 93
6 6 01
7 6 07
8 6 01
Note 2: The data noted down at step 7 of "Setting method".

Check on the Oscilloscope

1. Horizontal period
A=B
B
A
2. Vertical period
E
Check on the monitor TV
Color bar chart picture frame
5-15
MVC-CD250/CD400
Procedure
01
00
00
YL (Note 2)
YH (Note 2)
79 Press PAUSE button.
Check the data changes to
"01".
00 Press PAUSE button.
C=D
C
D
Fig. 5-1-12
E=F
F
V
Fig. 5-1-13
Monitor TV picture frame
Fig. 5-1-14