Contrast Adjustment (Vf-126 Board); Backlight Consumption Current Adjustment; (Vf-126 Board) - Sony CCD-TR913E Service Manual

4. Contrast Adjustment (VF-126 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
Pin !§ of CN910 (EVF VG) on
Measurement Point
VC-214 board
Measuring Instrument Oscilloscope
Adjustment Page E
Adjustment Address C7
Specified Value A=2.0 ± 0.1V
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
3) Select page: E, address: C7, change the data and set the voltage
(A) between the 7 step peak and the pedestal to the specified
value.
4) Press the PAUSE button.
5) Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
6) Select page: 0, address: 01, and set data: 00.
7 step peak
A
Pedestal
Fig. 5-1-14.
2H

5. Backlight Consumption Current Adjustment

(VF-126 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
Note : Adjust 30 seconds after running on the power supply.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 6, address: 6F, set data: 04, and press the PAUSE
button.
4) Select page: E, address: CF, change the data and set the voltage
difference (A) between Pin !¢ of CN910 (EVF BL 4.75V) and
Pin !£ of CN910 (EVF BL) to the specified value of NORMAL
mode.
5) Press the PAUSE button.
6) Select page: 6, address: 6F, set data: 02, and press the PAUSE
button.
7) Select page: E, address: FF, change the data and set the voltage
difference (A) between Pin !¢ and Pin !£ to the specified value
of BRIGHT mode..
8) Press the PAUSE button.
9) Select page: 6, address: 6F, set data: 00, and press the PAUSE
button.
10) Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
11) Select page: 0, address: 01, and set data: 00.
5-23
Camera
Arbitrary
+ Probe: Pin !¢ of CN910
(EVF BL 4.75V) on VC-214 board
– Probe: Pin !£ of CN910
(EVF BL) on VC-214 board
Digital voltmeter
E
CF, FF
NORMAL mode : A=16 ± 1mVdc
BRIGHT mode : A=26 ± 1mVdc