Sony FD Mavica MVC-FD97, Руководство по обслуживанию

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5-40
4. Contrast Adjustment (VF-141 board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value. If deviated, the screen image will be blackish or satu-
rated (whitish).
Mode CAMERA
Subject Arbitrary
Measurement Point
Pin
wa
of CN803 (EVF_VG) on
FC-85 board
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address
CA (NTSC)
CC (PAL )
Specified Value A = 2.12
±
0.1 Vp-p
Menu setting:
1) VIDEO OUT of SET UP menu
.................................. NTSC (NTSC mode)
(This adjustment must be performed in NTSC mode, so don’t
set the menu setting to “PAL” )
Adjusting method (NTSC):
Order Page Address Data Procedure
1 0 01 01
2 5 F1 03
3 D CA
Change the data and set the
voltage (A) to the specified value.
4 D CA Press PAUSE button.
Adjusting method (PAL):
Order Page Address Data Procedure
1 0 01 01
2 5 F1 03
3 D CA
Change the data and set the
voltage (A) to the specified value.
4 D CA
Read the data and this data is
named D
CA
.
5
Convert Dref to decimal notation
and obtain D
CA
’. (Note)
6
Calculate using following equations
(decimal calculation).
D
CA
’= D
ref
’– 4
7
Convert D
CA
’ to a hexadecimal
number, and obtain D
CA
. (Note)
8 D CC D
CA
Press PAUSE button.
Note:
Refer to table 5-2-2. “Hexadecimal-decimal conversion
table”.
Processing after Completing Adjustment:
Order Page Address Data Procedure
1 5 F1 00
2 0 01 00
Fig. 5-1-27
2H
A
Pedestal
10 steps peak
A: Between the pedestal and 10 steps peak