Electrical Adjustments - Sony STR-D760Z Service Manual

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3 7 6 3 1 5 1 5 0
ELECTRICAL ADJUSTMENT
TUNER SECTION
No adjustment is needed due to a tuner unit (TU401).
OSD SECTION
OSD Width Adjustment
Note: Perform "ALL CLEAR" before this adjustment.
(Refer to Servicing note on page 4)
Connection:
MONITOR OUT
Monitor
SET
Procedure:
1. Press the POWER button and turn ON the power.
2. The OSD function frame will be displayed on the monitor. This
screen will disappear in a few seconds automatically when the
input of codes using the remote commander stops.
If it disappears during adjustments, move the cursor of the re-
mote commander supplied as an accessory. The screen will ap-
pear again.
3. While watching the monitor screen, adjust CT201 of the
S.VIDEO board so that the following adjustment standard is
T E
satisfied.
L 1 3 9 4 2 2 9 6 5 1 3
monitor screen
FUNCTION SOUND SETUP
INPUT SUB USER
0 ( ) p P =
OSD function frame
A
Adjustment standard:
Adjust so that the width B becomes one and a half times of width A.
1.5A = B
NOTE:
Extra margin is provided in this adjustment in consideration of the
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deviation of the screen according to the type of monitor used.
Consequently, the user is able to adjust the position of the screen
freely. (For details, refer to "Adjustment of OSD Screen Position"
in 1. Servicing note. Refer to page 4.)
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SECTION 4
OSD Color burst Adjustment
Connection:
frequency counter
S.VIDEO board
JW232
Procedure:
1. Without anything connected to the external input terminal, press
the POWER button and turn ON the power.
2. Adjust CT202 of the S.VIDEO board so that the reading on the
frequency counter becomes 3.579545 MHz ± 10 MHz. (US,
CND, E, PX models) or 4.433619 MHz ± 10 MHz. (SP, MY,
AUS models)
• Abbreviation
CND : Canadian model
SP : Singapore model
MY : Malaysia model
AUS : Australian model
OSD Picture Adjustment
Connection:
Connection 1:
Vectorscope
set
MONITOR OUT
Connection 2:
Vectorscope
set
VTR etc.
™
+
MONITOR OUT
VIDEO 1 IN
Procedure 1:
1. Without anything connected to the external input terminal (con-
B
nection 1), press the POWER button and turn ON the power.
2. Check that the OSD function frame screen is displayed on the
monitor. If no OSD function frame screen is displayed, move
the cursor button of the remote commander provided to display
the screen.
3. Observe the vectorscope, and adjust RV201 of the S. VIDEO
board so that the light dots converge in the BLUE area.
4. Connect a dynamic picture video device to the external input
terminal (VIDEO 1 IN jack) of this unit (Connection 2).
x 5. Press the VIDEO FUNCTION button and set the input source a o
y
to VIDEO 1.
6. Move the cursor of the remote commander provided, and dis-
i
play the OSD function frame.
7. Observe the vectorscope. Check that the light dots in the BLUE
range and the light dots adjusted at 3 are coinciding.
8. If they do not coincide, disconnect the external video device,
and adjust RV201 of the S. VIDEO board again.
9. If the light dots when an external video device is connected and
not connected coincide, it indicates the end of the adjustment.
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8
Procedure 2: (When no vectorscope is used)
Connection:
VTR etc.
VIDEO 1 IN
1. Connect a dynamic picture video device to the VIDEO 1 IN
jack of the unit.
2. Press the VIDEO FUNCTION button, and set the input source
to VIDEO 1.
3. Move the cursor of the remote commander provided, and dis-
play the OSD function frame.
4. Take note of the blue and green screens at the bottom left of the
OSD function frame.
5. Disconnect the video device connected at 1.
6. Adjust RV201 of the S. VIDEO board so that the blue and green
parts at the bottom left of the OSD function frame to the same
color as the images checked at 4.
Q Q
Monitor
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Adjustment Location
[S. VIDEO BOARD] (Component side)
Monitor
OSD color burst
u 1 6 3
.
2 4
9 9 8
set Monitor
MONITOR OUT
FUNCTION
0
Blue area
Note) Perform this adjustment when disconnecting the external video de-
vice. If the external video device is connected, there is no meaning
in performing this adjustment due to the use of the color burst of the
external device instead of the internal sync signal.
1 5 1 5 0 8 9 2 4
OSD width
IC215
JW232
CT201
CT202
IC205
RV201
m
c o
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2
9 9
monitor screen
Green area
SOUND SETUP
INPUT SUB USER ™
( ) p P = +
OSD function frame
9 8 2 9 9
OSD picture
CNP202