Sony STR-DA9000ES Service Manual page 22

STR-DA9000ES
UP CONVERT SIGNAL LEVEL ADJUSTMENT
Enter the test mode
[INPUT MODE]
1. While pressing the
press the button to turn on the main power.
I/1
2. It enters the test mode, and display as below figure.
Display
HUE CONTRAST
[7]
1. Y LEVEL ADJUSTMENT
Setting:
COMPONENT board
COMPONENT
MONITOR OUT
S-VIDEO board
VIDEO Y jack
VIDEO 1
(J1305)
S2 VIDEO IN jack
(J406)
color pattern
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S2 VIDEO
IN jack (J406) on the S-VIDEO board, and connect an
oscilloscope to the COMPONENT VIDEO MONITOR OUT
Y jack (J1305) on the COMPONENT board. (75Ω terminated)
2. Enter the test mode.
3. Input color bars signal from the color pattern generator.
[MENU]
4. Adjust the dial so that the Vp-p value of waveform
becomes 1 Vp-p.
Y waveform:
2. COLOR LEVEL ADJUSTMENT
Setting:
COMPONENT board
COMPONENT VIDEO
MONITOR OUT
P /C /B-Y jack
S-VIDEO board
B B
(J1305)
VIDEO 1
S2 VIDEO IN jack
(J406)
color pattern
generator
color bars 100%
COMPONENT board
COMPONENT VIDEO
MONITOR OUT
P /C /R-Y jack
R R
(J1305)
22
[DISPLAY]
and buttons,
COLOR
[7] [7]
oscilloscope
(AC range)
75 Ω
+
set
–
1 Vp-p
oscilloscope
(AC range)
75 Ω
+
–
set
75 Ω
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S2 VIDEO
IN jack (J406) on the S-VIDEO board, and connect an
oscilloscope to the COMPONENT VIDEO P
COMPONENT VIDEO P
COMPONENT board. (75Ω terminated)
2. Enter the test mode.
3. Input color bars signal from the color pattern generator.
4. Display two waveforms of C
[--/+]
5. Adjust the dial so that the Vp-p value of waveforms of C
and C both may be most set to 0.7V closely.
R
C waveform:
B
C waveform:
R
3. HUE LEVEL ADJUSTMENT
Setting:
COMPONENT board
COMPONENT VIDEO
MONITOR OUT
P /C /B-Y jack
S-VIDEO board
B B
(J1305)
VIDEO 1
S2 VIDEO IN jack
(J406)
color pattern
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S2 VIDEO
IN jack (J406) on the S-VIDEO board, and connect an
oscilloscope to the COMPONENT VIDEO P
the COMPONENT board. (75Ω terminated)
2. Enter the test mode.
3. Input color bars signal from the color pattern generator.
[MAIN MENU]
4. Adjust the
C waveform:
B
Adjust so that the height of
A and B may be located in a line
on this line.
/C /B-Y jack and
B B
/C /R-Y jack (J1305) on the
R R
and C simultaneously.
B R
0.7 Vp-p
0.7 Vp-p
oscilloscope
(AC range)
75 Ω
+
set
–
/C /B-Y jack on
B B
dial so that the waveform as bellow.
B
A
B