Sony DCR-TRV738E Service Manual page 121

3. S VIDEO OUT Chroma Level Adjustment
(VC-278 board)
Mode VTR stop
Signal No signal
Measurement Point Chroma signal terminal of S VIDEO
jack (75Ω terminated)
External trigger: Y signal terminal of
S VIDEO jack
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 26, 27
Specified Value Cr level: A = 714 ± 14mV (NTSC)
Cb level: B = 714 ± 14mV (NTSC)
Burst level: C =286 ± 6mV (NTSC)
Note: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01 01
2 A 12 10
3 3 0C 02
4 C 26
5 C 26
6 C 27
7 C 27
8 3 0C 00
9 A 12 00
10 0 01 00
A
0.28 µsec (NTSC)
Fig. 5-3-8.
A = 700 ± 14mV (PAL)
B = 700 ± 14mV (PAL)
C =300 ± 6mV (PAL)
Procedure
Set the data.
Set the data, and press PAUSE
button.
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.
Set the data, and press PAUSE
button.
Set the data, and press PAUSE
button.
Set the data.
H
B
0.23 µsec (PAL)
DCR-TRV738E/TRV740/TRV740E/TRV840
4. VIDEO OUT Y, Chroma Level Check (VC-278 board)
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Note: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2 A 12
3 3 0C
4
5
6 3 0C
7 A 12
8 0 01
A
C
5-55
VTR stop
No signal
Video signal terminal of AUDIO/
VIDEO jack (75Ω terminated)
Oscilloscope
Sync level: A = 293 ± 18mV (NTSC)
A = 307 ± 18mV (PAL)
Burst level: B = 286 ± 18mV (NTSC)
B = 300 ± 18mV (PAL)
Procedure
01 Set the data.
10 Set the data, and press PAUSE
button.
02 Set the data, and press PAUSE
button.
Check that the sync signal level
(A) satisfies the specified value.
Check that the burst signal level
(B) satisfies the specified value.
00 Set the data, and press PAUSE
button.
00 Set the data, and press PAUSE
button.
00 Set the data.
H
Fig. 5-3-9.
B