Sony DCR-TRV240 Service Manual page 149

DCR-TRV240/TRV340
3. S VIDEO OUT Chroma Level Adjustment
(VC-276 board)
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2 <D> <FE>
[A] [12]
3
4
5
6 3 0C
7 C 26
8 C 26
9 C 27
10 C 27
11 3 0C
12 <D> <FE>
[A] [12]
13 0 01
14
Note2: < >: DCR-TRV240, [ ]: DCR-TRV340
0.28 µsec
VTR stop
No signal
Chroma signal terminal of S VIDEO
jack (75Ω terminated)
External trigger: Y signal terminal of
S VIDEO 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. (Note2)
Set the HOLD switch to OFF.
Set the POWER switch to OFF,
then set to VCR again.
Set the HOLD switch to ON.
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.
00 Set the data, and press PAUSE
button.
00 Set the data, and press PAUSE
button. (Note2)
00 Set the data.
Turn off the power and turn on again.
H
A B
0.28 µsec
Fig. 5-3-8.
4. VIDEO OUT Y, Chroma Level Check (VC-276 board)
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Note1: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2 <D> <FE>
[A] [12]
3
4
5
6 3 0C
7
8
9 3 0C
10 <D> <FE>
[A] [12]
11 0 01
12
Note2: < >: DCR-TRV240, [ ]: DCR-TRV340
A
C
5-48
VTR stop
No signal
Video signal terminal of AUDIO/
VIDEO jack (75Ω terminated)
Oscilloscope
Sync level: A = 293 ± 18mV
Burst level: B = 286 ± 18mV
Procedure
01 Set the data.
10 Set the data, and press PAUSE
button. (Note2)
Set the HOLD switch to OFF.
Set the POWER switch to OFF,
then set to VCR again.
Set the HOLD switch to ON.
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. (Note2)
00 Set the data.
Turn off the power and turn on
again.
H
Fig. 5-3-9.
B