Sony STR-DA3000ES Service Manual page 18

STR-DA3000ES
UP CONVERT SIGNAL LEVEL ADJUSTMENT
Enter the test mode
1. In the standby status, press the
[INPUT MODE] [DISPLAY]
and
2. It enters the test mode, and display as below figure.
Display
HUE CONTRAST
[7]
1. Y Level Adjustment
Setting:
COMPONENT
VIDEO Y jack
VIDEO 1
S2 VIDEO IN jack
color pattern
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S2 VIDEO
IN jack, and connect an oscilloscope to the COMPONENT
VIDEO Y jack.
2. Enter the test mode.
3. Input color bars signal from the color pattern generator.
[MENU]
4. Adjust the knob so that the Vp-p value of waveform
becomes 1 Vp-p.
Y waveform:
18
button while pressing the
I/1
buttons.
COLOR
[7] [7]
oscilloscope
(AC range)
+
set
–
1 Vp-p
2. Color Level Adjustment
Setting:
COMPONENT VIDEO
P /C /B-Y jack
B B
VIDEO 1
S2 VIDEO IN jack
color pattern
generator
color bars 100%
COMPONENT VIDEO
P /C /R-Y jack
R R
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S2 VIDEO
IN jack, and connect an oscilloscope to the COMPONENT
VIDEO P /C /B-Y jack and COMPONENT VIDEO P
B B
Y jack.
2. Enter the test mode.
3. Input color bars signal from the color pattern generator.
4. Display two waveforms of C
[--/+]
5. Adjust the knob so that the Vp-p value of waveforms of
C and C both may be most set to 0.7V closely.
B R
C waveform:
B
C waveform:
R
3. HUE Level Adjustment
Setting:
COMPONENT VIDEO
P /C /B-Y jack
B B
VIDEO 1
S2 VIDEO IN jack
color pattern
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S2 VIDEO
IN jack, and connect an oscilloscope to the COMPONENT
VIDEO P /C /B-Y jack.
B B
2. Enter the test mode.
3. Input color bars signal from the color pattern generator.
[MAIN MENU]
4. Adjust the
C waveform:
B
B
A
Adjust so that the height of
A and B may be located in a line
on this line.
oscilloscope
(AC range)
+
–
set
/C
R
and C simultaneously.
B R
0.7 Vp-p
0.7 Vp-p
oscilloscope
(AC range)
+
set
–
knob so that the waveform as bellow.
/R-
R