Contrast Adjustment (Vc-242D Board); Backlight Consumption Current Adjustment; (Vc-242D Board) - Sony DSR-PD150P Service Manual

4. Contrast Adjustment (VC-242D 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 Camera
Subject Arbitrary
Measurement Point Pin qk of CN007 (EVF VG)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 99
Specified Value A=2.20 ± 0.05V
Adjusting method:
Order Page Address Data
1 0 01 01
2 D 99
3 D 99
4 0 01 00
3 steps peak
A
Pedestal
Fig. 5-1-20.
Procedure
Set the data.
Change the data and set the
voltage (A) between the 3 steps
peak and pedestal to the
specified value.
(The data should be "00" to "7F".)
Press PAUSE button.
Set the data.
2H

5. Backlight Consumption Current Adjustment

(VC-242D board)

Set the backlight luminance and color temperature.
If deviated, the image may become dark or bright.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: Perform the adjustment in the following order.
Note2: Adjust 30 seconds after running on the power supply.
Adjusting method:
Order Page Address Data
1 0 01
2 D 9C
3 D 9D
4 D 9E
5 D 9F
6 D 9D
7 D 9D
8 D 9C
9 D 9C
10 D 9E
11 D 9E
12 0 01
5-33
Camera
Arbitrary
+ Probe: Pin w; of CN007 (EVF BL+)
– Probe: Pin qj of CN007 (EVF BL–)
Digital voltmeter
D
9C, 9D, 9E, 9F
BRIGHT mode : A=22.0 ± 1.5mVdc
NORMAL mode : A=13.0 ± 1.5mVdc
Procedure
01 Set the data.
F0 Set the data, and press PAUSE
button.
F0 Set the data, and press PAUSE
button.
11 Set the data, and press PAUSE
button.
1C Set the data, and press PAUSE
button.
Change the data and set the
voltage difference (A) between
Pin w; and Pin qj to the
specified value of BRIGHT
mode.
(The data should be "C0" to
"FF".)
Press PAUSE button.
Set the same data as address:
9D.
Press PAUSE button.
Change the data and set the
voltage difference (A) between
Pin w; and Pin qj to the
specified value of NORMAL
mode.
(The data should be "00" to
"1F".)
Press PAUSE button.
00 Set the data.