Sony DCR-TRV230 Service Manual page 181

3. S VIDEO OUT Y Level Adjustment (VC-254 board)
Mode VTR stop
Signal No signal
Measurement Point Y signal terminal of S VIDEO OUT
jack (75Ω terminated)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 25
Specified Value A = 1000 ± 20mV
Adjusting method:
Order Page Address Data
1 0 01 01
2 D 11 10
3 3 0C 02
4 C 25
5 C 25
6 3 0C 00
7 D 11 00
8 0 01 00
Center of luminance line
H
Fig. 5-3-10.
Procedure
Set the data.
Set the data, and press PAUSE
button.
Set the data, and press PAUSE
button.
Change the data and set the Y
signal level (A) to the specified
value.
Press PAUSE button.
Set the data, and press PAUSE
button.
Set the data, and press PAUSE
button.
Set the data.
4. S VIDEO OUT Chroma Level Adjustment
(VC-254 board)
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01
2 D 11
3 3 0C
4 C 26
5 C 26
6 C 27
7 C 27
8
A 9 3 0C
10 D 11
11 0 01
0.28 µ sec
5-50
VTR stop
No signal
Chroma signal terminal of S VIDEO
OUT jack (75Ω terminated)
External trigger: Y signal terminal of
S VIDEO OUT jack
Oscilloscope
C
26, 27
Cr level: A = 714 ± 14mV
Cb level: B = 714 ± 14mV
Burst level: C = 286 ± 6mV
Procedure
01 Set the data.
10 Set the data, and press PAUSE
button.
02 Set the data, and press PAUSE
button.
Change the data and set the Cr
signal level (A) to the specified
value.
Press PAUSE button.
Change the data and set the Cb
signal level (B) to the specified
value.
Press PAUSE button.
Check that the burst signal level
(C) is satisfied the specified
value.
00 Set the data, and press PAUSE
button.
00 Set the data, and press PAUSE
button.
00 Set the data.
H
A
B
0.28 µ sec
Fig. 5-3-11.
C