Sony STR-DA3100ES Service Manual page 14

STR-DA3100ES
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:
VIDEO board
COMPONENT VIDEO
ASSIGNABLE
S-VIDEO board
MONITOR OUT
DVD IN
Y jack
S2 VIDEO IN jack
(J3301)
(J202)
color pattern
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the DVD IN S2 VIDEO IN
jack (J202) on the S-VIDEO board, and connect an oscilloscope
to the COMPONENT VIDEO ASSIGNABLE MONITOR OUT
Y jack (J3301) on the VIDEO board.
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:
VIDEO board
COMPONENT VIDEO
ASSIGNABLE
MONITOR OUT
P /C /B-Y jack
B B
S-VIDEO board
(J3301)
DVD IN
S2 VIDEO IN jack
(J202)
color pattern
generator
color bars 100%
VIDEO board
COMPONENT VIDEO
ASSIGNABLE
MONITOR OUT
P /C /R-Y jack
R R
(J3301)
Procedure:
1. Connect a color pattern generator to the DVD IN S2 VIDEO IN
jack (J202) on the S-VIDEO board, and connect an oscilloscope
to the COMPONENT VIDEO ASSIGNABLE MONITOR OUT
P /C /B-Y jack and COMPONENT VIDEO ASSIGNABLE
B B
MONITOR OUT P /C /R-Y jack (J3301) on the VIDEO board .
R R
14
button while pressing the
I/1
buttons.
COLOR
[7] [7]
oscilloscope
(AC range)
+
set
–
1 Vp-p
oscilloscope
(AC range)
+
–
set
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:
VIDEO board
COMPONENT VIDEO
ASSIGNABLE
MONITOR OUT
S-VIDEO board
P /C
B
DVD IN
(J3301)
S2 VIDEO IN jack
(J202)
color pattern
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the DVD IN S2 VIDEO IN
jack (J202) on the S-VIDEO board, and connect an oscilloscope
to the COMPONENT VIDEO ASSIGNABLE MONITOR OUT
P /C /B-Y jack (J3301) on the VIDEO board ..
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
A
Adjust so that the height of
A and B may be located in a line
on this line.
and C simultaneously.
B R
0.7 Vp-p
0.7 Vp-p
oscilloscope
/B-Y jack
B
(AC range)
+
set
–
dial so that the waveform as bellow.
B
B