DSC-P71, DSC-P71M (serv.man2) - Sony Digital Camera Service Manual (repair manual). Page 127

Set the DC bias of the common electrode drive signal of LCD to
the specified value.
If deviated, the LCD display will be move, producing flicker and
conspicuous vertical lines.

Mode

PLAY

Signal

Arbitrary

Measurement Point

Check on the LCD screen

Measuring Instrument

Adjustment Page

A

Adjustment Address

84

Specified Value

The brightness difference
between the section-A and
section-B is minimum

Perform “Bright Adjustment” and “Contrast Adjustment”
before this adjustment.

Order Page Address Data

Procedure

1

0

01

01

2

A

02

03

Press PAUSE button

3

4

F1

82

4

A

84

Change the data so that
brightness of the section A
and section B is equal.

5

A

84

Read the data and this data is
named Dref.

6

Convert Dref to decimal
notation, and obtain Dref’.
(Note 2)

7

Calculate D

84

’ using

following equations.
(decimal calculation)
D

84

’ = Dref’ – 02

8

Convert D

84

’ to a hexadeci-

mal number, and obtain D

84

.

(Note 2)

9

A

84

D

84

Press PAUSE button.

 Refer to table 5-2-2. “Hexadecimal-decimal conversion

table”.

Order Page Address Data

Procedure

1

A

02

00

Press PAUSE buttton

2

4

F1

00

3

0

01

00

A

A

A

A

B

B

B

B

Set the center level of VIDEO signal for driving the LCD to the
specified value.

Mode

PLAY

Signal

Arbitrary

Measurement Point

Pin 9 of CN903 (VG)

Measuring Instrument

Digital voltmeter

Adjustment Page

A

Adjustment Address

8B

Specified Value

A = 7.00 

± 0.05 Vp-p

Order Page Address Data

Procedure

1

0

01

01

2

A

02

03

Press PAUSE button

3

4

F1

03

Change the data and set the

4

A

8B

DC voltage (A) to the specified
 value. (Note)

5

A

8B

Press PAUSE button.

Adjust it between data 00 and 7F.

Order Page Address Data

Procedure

1

A

02

00

Press PAUSE button

2

4

F1

00

3

0

01

00