DSC-P31, DSC-P31M - Sony Digital Camera Service Manual (repair manual). Page 121

The inner focus lens flange back adjustment is carried out auto-
matically. In whichever case, the focus will be deviated during
auto focusing/manual focusing.

Mode

CAMERA

Subject

Siemens star chart with ND filter
for minipattern box (Note 1)

Measurement Point

Check operation on monitor TV

Measuring Instrument

Adjustment Page

F

Adjustment Address

18 to 2B, 3E, 52, 53

Dark Siemens star chart.

Check that the data of page: 6, address: 02 is “00”.
If not, turn the power of unit OFF/ON.

Preparations before adjustments:
1) The minipattern box is installed as shown in the following fig-

ure.

 The attachment lenses are not used.

2) Install the minipattern box so that the distance between it and

the front of lens of camera is less than 3 cm.

3) Make the height of minipattern box and the camera equal.
4) Check the output voltage of the regulated power supply is the

specified voltage 

± 0.01 Vdc.

5) Check that the center of Siemens star chart meets the center of

shot image screen with the zoom lens at TELE end and WIDE
end respectively.

Specified voltage: The specified voltage varies according to the

minipattern box, so adjustment the power sup-
ply output voltage to the specified voltage writ-
ten on the sheet which is supplied with the mini-
pattern box.

Minipattern box

Below 3 cm

Camera

Camera 

table

Red (+)

Black (–)

Yellow (SENS +)

White (SENS –)

Black (GND)

Need not connected

Regulated power supply

Output voltage : Specified voltage 

±

 0.01 Vdc

Output current : more than 3.5 A

Order Page Address Data

Procedure

1

Perform “Data setting during
camera system adjustment”.
(Refer to page 5-13)

2

6

01

13

Press PAUSE button.

3

6

01

27

Press PAUSE button.
(Note 4)

4

6

02

Check the data changes to
“01”.

5

F

3E

Check the data.
00: Normal
01 to FF: Defective

6

F

24

Check the data.
0A to 7F: Normal
00 to 09,
80 to FF: Defective

The adjustment data will be automatically input to page:
F, address: 18 to 2B, 3E, 52 and 53.

Order Page Address Data

Procedure

1

6

01

00

Press PAUSE button.

2

Release the data setting
performed at step 1.
(Refer to page 5-13)

3

Perform “Flange Back
Check”.