Sony DCR-TRV40, Руководство по обслуживанию

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5-41
DCR-TRV40/TRV40E/TRV50/TRV50E
2. RGB AMP Adjustment (PD-165 board)
Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode VTR stop
Signal No signal
Measurement Point Pin
9
of CN1012 of VC-283 board
(PANEL VG)
Ext. trigger: Pin
5
of CN1012 of
VC-283 board (PANEL COM)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 64
Specified Value A = 3.50
±
0.05V
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 C 64 Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
(The data should be “00” to “3F”.)
3 C 64 Press PAUSE button.
4 0 01 00 Set the data.
5 Perform “Contrast Adjustment”,
“COM AMP Adjustment” and
“V COM Adjustment”.
3. Contrast Adjustment (PD-165 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode VTR stop
Signal No signal
Measurement Point Pin
9
of CN1012 of VC-283 board
(PANEL VG)
Ext. trigger: Pin
5
of CN1012 of
VC-283 board (PANEL COM)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 69
Specified Value A = 3.45
±
0.05V
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 C 69 Change the data and set the
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value.
(The data should be “00” to “7F”.)
3 C 69 Press PAUSE button.
4 0 01 00 Set the data.
5 Perform “COM AMP Adjustment”
and “V COM Adjustment”.
Pedestal
Pedestal
A
2H
Pedestal
100IRE
A
2H
Fig. 5-1-20. Fig. 5-1-21.