Sony DCR-TRV40, Руководство по обслуживанию

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5-56
DCR-TRV40/TRV40E/TRV50/TRV50E
3-4. VIDEO SYSTEM ADJUSTMENTS
Note1:
Before perform the servo and RF system adjustments, check that
the specified value of “40.5MHz/50MHz 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-TRV40/TRV50
PAL model: DCR-TRV40E/TRV50E
1. Chroma BPF fo Adjustment (VC-283 Board)
Set the center frequency of IC4101 chroma band-pass filter.
Mode Camera
Subject Arbitrary
Measurement Point CH1: Chroma signal terminal of S
VIDEO jack (75
Ω
terminated)
CH2: Y signal terminal of S VIDEO jack
(75
Ω
terminated)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 28
Specified Value A = 100mVp-p or less
B = 200mVp-p or more
Note: The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 Check that the burst signal (B) is
output to the chroma signal
terminal of S VIDEO jack.
3 3 0C 04 Set the data, and press PAUSE
button.
4 C 28 Change the data for minimum
amplitude of the burst signal
level (A).
(The data should be “00” to “0F”.)
5 C 28 Press PAUSE button.
6 3 0C 00 Set the data, and press PAUSE
button.
7 Check that the burst signal level
(B) satisfies the specified value.
8 0 01 00 Set the data.
2. S VIDEO OUT Y Level Adjustment (VC-283 Board)
Mode Camera
Subject Arbitrary
Measurement Point Y signal terminal of S VIDEO jack
(75
Ω
terminated)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 25
Specified Value A = 1000
±
14mV
Note: The data of page: 0, address: 10 must be “00”.
Switch setting:
DEMO MODE (Menu setting) ........................................ OFF
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 3 0C 02 Set the data, and press PAUSE
button.
3 C 25 Change the data and set the Y
signal level (A) to the specified
value.
4 C 25 Press PAUSE button.
5 3 0C 00 Set the data, and press PAUSE
button.
6 0 01 00 Set the data.
CH1
CH2
A
H
CH1
H
B
When the data of page: 3, address: 0C, is 04:
When the data of page: 3, address: 0C, is 00:
Fig. 5-3-6.
H
Center of luminance line
A
Fig. 5-3-7.