Video System Adjustments; Chroma Bpf F Adjustment (Va-117 Board); S Video Out Y Level Adjustment (Vc-280 Board) - Sony DCR-TRV16 Service Manual

DCR-TRV16/TRV16E/TRV18/TRV18E/TRV116E/TRV118E
3-4.

VIDEO SYSTEM ADJUSTMENTS

Note1: Before perform the video system adjustments, check that the
specified value of "36 MHz Origin Oscillation Adjustment" of
"CAMERA SYSTEM ADJUSTMENT" is satisfied.
And check that the data of page: 0, address: 10 is "00". If not, set
data: 00 to this address.
Note2: NTSC model: DCR-TRV16/TRV18
PAL model: DCR-TRV16E/TRV18E/TRV116E/TRV118E
1. Chroma BPF fo Adjustment (VA-117 Board)
Set the center frequency of IC4101 chroma band-pass filter.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2
3 3 0C
4 C 28
5 C 28
6 3 0C
7
8 0 01
When the data of page: 3, address: 0C, is 04:
A
CH1
CH2
When the data of page: 3, address: 0C, is 00:
CH1
Camera
Arbitrary
CH1: Chroma signal terminal of S
VIDEO jack (75Ω terminated)
CH2: Y signal terminal of S VIDEO jack
(75Ω terminated)
Oscilloscope
C
28
A = 100mVp-p or less
B = 200mVp-p or more
Procedure
01 Set the data.
Check that the burst signal (B) is
output to the chroma signal
terminal of S VIDEO jack.
04 Set the data, and press PAUSE
button.
Change the data for minimum
amplitude of the burst signal
level (A).
(The data should be "00" to "0F".)
Press PAUSE button.
00 Set the data, and press PAUSE
button.
Check that the burst signal level
(B) satisfies the specified value.
00 Set the data.
H
H
Fig. 5-3-5.

2. S VIDEO OUT Y Level Adjustment (VC-280 Board)

Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: The data of page: 0, address: 10 must be "00".
Switch setting:
DEMO MODE (Menu setting) ................................................ OFF
Adjusting method:
Order Page Address Data
1 0 01
2 3 0C
3 C 25
4 C 25
5 3 0C
6 0 01
B
5-48
Camera
Arbitrary
Y signal terminal of S VIDEO jack
(75Ω terminated)
Oscilloscope
C
25
A = 1000 ± 14mV
Procedure
01 Set the data.
02 Set the data, and press PAUSE
button.
Change the data and set the Y
signal level (A) to the specified
value.
Press PAUSE button.
00 Set the data, and press PAUSE
button.
00 Set the data.
Center of luminance line
H
Fig. 5-3-6.
A