Osd Section - Sony SA-VA100 Service Manual

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OSD SECTION

OSD Width Adjustment
Note: Perform "cold reset" before this adjustment.
(Refer to SERVICING NOTE on page 4)
Connection:
Video signal
generator
VIDEO 1 IN
Method:
1. Connect the video signal generator to the VIDEO 1 IN jack and
output the cross hatch signal.
2. Turn ON the power, press the FUNCTION button, and set the
input source to VIDEO 1.
3. Taking the center of the monitor screen as center, and adjust CT601
of the MAIN board so that the distances A and B (to the edges of
the function frame) become equal.
4. If the OSD function frame screen disappears during the adjust-
ment, move the cursor of the remote commander provided. As a
result, the OSD screen will appear again.
TE
L 13942296513
C
OSD function frame
Adjustment specification:A=B
The cross hatch signal is input with the video signal generator so that
the center of the screen can be identified easily. If there is no device
to output the cross hatch signal, other video signals such as the color
bar signal can be used if these enable the center to be identified eas-
ily.
If these signals are not available, adjust so that the distances C and D
(from the edge of the OSD function frame to edge of the monitor
screen) become equal.
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Set
Monitor
MONITOR OUT
Monitor screen
A B
Center of screen D
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2 9
8
OSD Color Adjustment
Connection:
frequency counter
MAIN board
Pin 8 of IC605
(C635)
Method:
1. Without anything connected to the external input terminal, press
the SYSTEM POWER button and turn ON the power.
2. Adjust CT602 of the MAIN board so that the reading on the fre-
quency counter becomes 14.31818 MHz ± 180 MHz.
Q Q
3 6 7 1 3 1 5
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.
— 35 —
9 4 2 8
MAIN BOARD (CONDUCTOR SIDE)
IC605
C635
0 5 8 2 9 9 4 2 8
m
9 9
Pin 8
9 9