Electrical Adjustments - Sony STR-DA2100ES Service Manual

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ELECTRICAL ADJUSTMENTS

OSD ADJUSTMENT
Connection
frequency counter
VIDEO board
+
CNP3501 pin 2
–
Procedure:
1. Short the CNP3501 pin 4 on the VIDEO board to the GND.
2. Connect a frequency counter to the CNP3501 pin 2 on the
VIDEO board.
3. Press the I/1 button to turn on the main power.
4. Press the [MAIN MENU] button to display "CUSTOMIZE ".
5. Turn the [MENU] jog clockwise to display "OSD COLOR
[NTSC]". If "OSD COLOR [PAL]" is displayed, turn the [--/+]
jog counterclockwise.
6. Turn the [MENU] jog clockwise to display "OSD H.POSI [X]".
7. Adjust the CT3502 so that the frequency counter reading is
3.57954 MHz.
Adjustment and Connection Location:
– VIDEO Board (Component Side) –
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STR-DA2100ES
SECTION 5
UP CONVERT SIGNAL LEVEL ADJUSTMENT
Enter the test mode
1. While pressing the [MAIN MENU] and [DISPLAY] buttons, press
the I/1 button to turn on the main power.
2. It enters the test mode, and the message "F. HUE 7" appears.
1. Y LEVEL ADJUSTMENT
Setting:
VIDEO board
COMPONENT
MONITOR OUT
SVIDEO board
VIDEO Y jack
VIDEO 1
(J3104)
S-VIDEO IN jack
(J2106)
color pattern
set
generator
color bars 100%
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S-VIDEO
IN jack (J2106) on the SVIDEO board, and connect an
oscilloscope to the COMPONENT VIDEO MONITOR OUT
Y jack (J3104) on the VIDEO board. (75Ω terminated)
2. Enter the test mode, and the message "F. HUE 7" appears.
3. Turn the [MENU] dial, and "F. CONTRAST 7" is displayed.
4. Input color bars signal from the color pattern generator.
5. Adjust the [--/+] dial so that the Vp-p value of waveform
becomes 1 Vp-p.
Y waveform:
CNP3501
4
1
CT3502
x a o
y
. i
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2. COLOR LEVEL ADJUSTMENT
Setting:
VIDEO board
COMPONENT VIDEO
MONITOR OUT
P /C
SVIDEO board B
(J3104)
VIDEO 1
S-VIDEO IN jack
(J2106)
color pattern
generator
oscilloscope
color bars 100%
(AC range)
VIDEO board
COMPONENT VIDEO
75 Ω
MONITOR OUT
+
P /C /R-Y jack
R R
– (J3104)
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S-VIDEO
IN jack (J2106) on the SVIDEO board, and connect an
oscilloscope to the COMPONENT VIDEO P
and COMPONENT VIDEO P
VIDEO board. (75Ω terminated)
2. Enter the test mode, and the message "F. HUE 7" appears.
3. Turn the [MENU] dial, and "F. COLOR 7" is displayed.
4. Input color bars signal from the color pattern generator.
5. Display two waveforms of C
6. Adjust the [--/+] dial 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
Q Q
3 7 6 3
1 Vp-p
C waveform:
R
u 1 6 3
.
11 11
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2 4
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3. HUE LEVEL ADJUSTMENT
Setting:
oscilloscope
/B-Y jack
SVIDEO board
B
(AC range)
VIDEO 1
S-VIDEO IN jack
75 Ω
(J2106)
+
color pattern
–
set
generator
75 Ω
color bars 100%
Procedure:
1. Connect a color pattern generator to the VIDEO 1 S-VIDEO
IN jack (J2106) on the SVIDEO board, and connect an
oscilloscope to the COMPONENT VIDEO P
(J3104) on the VIDEO board. (75Ω terminated)
2. Enter the test mode, and the message "F. HUE 7" appears.
3. Input color bars signal from the color pattern generator.
4. Adjust the [--/+] dial so that the waveform as bellow.
/C /B-Y jack
B B
/C /R-Y jack (J3104) on the
R R
C waveform:
B
and C simultaneously.
B R
1 5 1 5 0 8 9 2 4
0.7 Vp-p
0.7 Vp-p
m
c o
STR-DA2100ES
2
9 9
VIDEO board
COMPONENT VIDEO
MONITOR OUT
P /C /B-Y jack oscilloscope
B B
(J3104) (AC range)
75 Ω
+
set
–
/C /B-Y jack
B B
B
A
Adjust so that the height of
A and B may be located in a line
on this line.
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