Backlight Consumption Current Adjustment; (Lb-062 Board); White Balance Adjustment (Vf-141 Board) - Sony CCD-TR618 Service Manual

3. Backlight Consumption Current Adjustment

(LB-062 board)

Set the backlight luminance and color temperature.
If deviated, the image may become dark or bright.
Mode Camera
Subject Arbitrary
Measurement Point + Probe: BL 4.75V (Pin 5 of CPC
– Probe: BL (Pin 3 of CPC connector
Measuring Instrument Digital voltmeter
Adjustment Page 7
Adjustment Address DF, E0, E1
Specified Value BRIGHT mode : A=15.5 ± 1mVdc
NORMAL mode : A=9.5 ± 1mVdc
Note1: Perform the adjustment in the following order.
Adjusting method:
Order Page Address Data
1 0 01 01
2 7 DF CA
3 7 E0 07
4 7 E1 91
5 7 E0
6 7 E0
7 7 E0
8
9
10
11 7 DF D
DF
12 7 E1
13 7 E1
14 0 01 00
Note2: Refer to "Table 5-4-1. Hexadecimal-decimal Conversion Table".
connector of FP-262 flexible
or Pin 5 of CN713 of VC-251
board)
of FP-262 flexible or Pin 3
of CN713 of VC-251 board)
Procedure
Set the data.
Set the data, and press PAUSE
button.
Set the data, and press PAUSE
button.
Set the data, and press PAUSE
button.
Change the data and set the
voltage difference (A) between
BL4.75V and BL to the specified
value of BRIGHT mode.
(The data should be "00" to "3F".)
Press PAUSE button.
Read the data, and this data is
named D .
E0
Convert D to decimal notation,
E0
and obtain D '. (Note2)
E0
Calculate D ' using following
DF
equations (Decimal calculation)
D ' = D ' + 192
DF E0
Convert D ' to a hexadecimal
DF
number, and obtain D . (Note2)
DF
(The data should be "C0" to "FF".)
Set the data, and press PAUSE
button.
Change the data and set the
voltage difference (A) between
BL4.75V and BL to the specified
value of NORMAL mode.
(The data should be "80" to "9F".)
Press PAUSE button.
Set the data.

4. White Balance Adjustment (VF-141 board)

Correct the white balance.
If deviated, the reproduction of the EVF screen may degenerate.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: Check the white balance only when replacing the following parts.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC4501
Adjusting method:
Order Page Address Data
1 0 01
2 7 DA
3 7 DB
4 7 DA
5 7 DA
6 7 DA
7 7 DB
8 7 DB
9 7 DB
10 0 01
5-26
Camera
Arbitrary
Check on EVF screen
7
DA, DB
The EVF screen should not be
colored.
Procedure
01 Set the data.
8D Set the data, and press PAUSE
button.
83 Set the data, and press PAUSE
button.
Check that the EVF screen is not
colored. If not colored, proceed
to step 10.
Change the data so that the EVF
screen is not colored.
Press PAUSE button.
Change the data so that the EVF
screen is not colored.
Press PAUSE button.
If the EVF screen is colored,
repeat steps 5 to 9.
00 Set the data.