Sony DSC-U40 (serv.man4) Service Manual ▷ View online
DSC-U40
6-24
4.
V-COM Adjustment
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.
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 LCD screen
Measuring Instrument
Adjustment Page
4F
Adjustment Address
72
Specified Value
The brightness difference
between the section-A and
section-B is minimum
between the section-A and
section-B is minimum
Adjusting method:
Order Page Address
Data
Procedure
1
Perform “Data setting
during LCD system
adjustment”
(Refer to page 6-22)
during LCD system
adjustment”
(Refer to page 6-22)
2
40
89
42
[Set]
3
4F
72
Change the data so that
brightness of the
section A and section
B is equal.
(The data should be
“80” to “BF”)
brightness of the
section A and section
B is equal.
(The data should be
“80” to “BF”)
4
4F
72
[Write]
Subtract 9 from the
data, and write this
data.
data, and write this
data.
Processing after Completing Adjustment:
Order Page Address
Data
Procedure
1
40
89
00
[Set]
2
Release “Data setting
during LCD system
adjustment”
(Refer to page 6-22)
during LCD system
adjustment”
(Refer to page 6-22)
Fig. 6-1-9
A
A
A
A
B
B
B
B
DSC-U40
6-25
5.
White Balance Adjustment (LCD Light OFF)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 8D
Adjustment Page
4F
Adjustment Address
80, 81
Note:
Check the white balance only when replacing the follow-
ing parts. If necessary, adjust them.
1. LCD901 (LCD panel)
2. IC801
1. LCD901 (LCD panel)
2. IC801
Adjusting method:
Order Page Address
Data
Procedure
Perform “Data setting
1
during LCD system
adjustment”
(Refer to page 6-22)
adjustment”
(Refer to page 6-22)
2
40
89
03
[Set]
3
40
8A
01
[Set]
4
4F
97
5D
[Write]
5
40
8B
03
[Set]
6
40
8C
01
[Set]
7
40
8D
[Read]
Check the data changes
to “01”.
to “01”.
8
40
8D
00
[Set]
9
4F
9A
64
[Write]
10
40
8B
04
[Set]
11
40
8C
01
[Set]
12
40
8D
[Read]
Check the data changes
to “01”.
to “01”.
Processing after Completing Adjustment:
Order Page Address
Data
Procedure
1
40
8D
00
[Set]
2
40
8A
00
[Set]
3
40
89
00
[Set]
Release “Data setting
4
during LCD system
adjustment”
(Refer to page 6-22)
adjustment”
(Refer to page 6-22)
6.
White Balance Adjustment (LCD Light ON)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
4F
Adjustment Address
76, 77
Specified Value
LCD screen must not be colored
Note:
Check the white balance only when replacing the follow-
ing parts. If necessary, adjust them.
1. LCD901 (LCD panel)
2. IC801
ing parts. If necessary, adjust them.
1. LCD901 (LCD panel)
2. IC801
Adjusting method:
Order Page Address
Data
Procedure
Perform “Data setting
1
during LCD system
adjustment”
(Refer to page 6-22)
adjustment”
(Refer to page 6-22)
2
40
89
05
[Set]
3
4F
76
8C
[Set]
4
4F
77
7C
[Set]
5
Check that the LCD
screen is not colored.
If not colored, proceed
to “Processing after
Completing Adjust-
ments”.
screen is not colored.
If not colored, proceed
to “Processing after
Completing Adjust-
ments”.
Change the data so that
6
4F
76
[Write]
the LCD screen is not
77
colored, and write this
data.
data.
Processing after Completing Adjustment:
Order Page Address
Data
Procedure
1
4F
8F
07
[Write]
2
40
89
00
[Set]
Release “Data setting
3
during LCD system
adjustment”
(Refer to page 6-22)
adjustment”
(Refer to page 6-22)
DSC-U40
6-26
6-2. SERVICE MODE
2-1.
APPLICATION FOR ADJUSTMENT (SEUS)
The application for adjustment (SEUS) is used to change the coef-
ficient for calculating the signal processing or EVR data. The SEUS
performs two-way communication between PC and set through
the USB terminal. The two-way communication result data can be
written to the nonvolatile memory.
ficient for calculating the signal processing or EVR data. The SEUS
performs two-way communication between PC and set through
the USB terminal. The two-way communication result data can be
written to the nonvolatile memory.
2-1-1.
Using Method of SEUS
1.
Connection
1) Connect the HASP key to the USB terminal of the PC.
2) Connect the PC and set with the USB cable.
3) Confirm that the set starts in the USB mode.
4) Start the SEUS on the PC.
5) Click
2) Connect the PC and set with the USB cable.
3) Confirm that the set starts in the USB mode.
4) Start the SEUS on the PC.
5) Click
[Connect]
on the SEUS screen. If the connection is nor-
mal, the SEUS screen will be as shown in Fig. 6-2-1, indicat-
ing the
ing the
“connected”
state.
Note:
The SEUS will go in
“disconnect" state, if the set is
turned off (for instance, by resetting the set). In such a
case, click
case, click
[Connect]
on the SEUS screen to restore
the
“connected”
state.
2.
Operation
• Page change
To change the page, click
[Page]
on the SEUS screen and enter
the page to be changed. The page is displayed in hexadecimal
notation.
notation.
• Address change
To change the address, click
[Address]
on the SEUS screen and
enter the address to be changed. The address is displayed in
hexadecimal notation.
hexadecimal notation.
• Data change
To change the data, click
[Set]
on the SEUS screen and enter
the data. The data is displayed in hexadecimal notation.
This operation does not write the data to the nonvolatile memory.
This operation does not write the data to the nonvolatile memory.
• Data writing
To write the data to the nonvolatile memory, click
[Write]
on
the SEUS screen and enter the data to be written.
• Data reading
The data displayed on the SEUS screen are the data values at
the time when the pages and addresses were set, and they are
not updated automatically. To check the data change, click
the time when the pages and addresses were set, and they are
not updated automatically. To check the data change, click
[Read]
on the SEUS screen and update the displayed data.
2-1-2.
Precaution on Use of SEUS
Wrong SEUS operation could clear correct adjustment data. To
prevent the data clear by mistake, it is recommended to save all
adjustment data by clicking
prevent the data clear by mistake, it is recommended to save all
adjustment data by clicking
[Page Edit]
on the SEUS screen be-
fore starting the adjustment.
Fig. 6-2-1
DSC-U40
6-27
2-2.
DATA PROCESS
In some adjustment items, the calculation of SEUS displayed data
(hexadecimal) is needed to check the specified data or to acquire
the adjustment data. In such a case, prepare a computer capable of
calculating hexadecimal numbers.
Also, the data at two addresses are read, which are treated as 2
bytes of upper 1 byte and lower 1 byte (4-digit hex. number), to
check the specified data.
(hexadecimal) is needed to check the specified data or to acquire
the adjustment data. In such a case, prepare a computer capable of
calculating hexadecimal numbers.
Also, the data at two addresses are read, which are treated as 2
bytes of upper 1 byte and lower 1 byte (4-digit hex. number), to
check the specified data.
XX XX
Displayed data at lower 1 byte address
Displayed data at upper 1 byte address
2-3.
SERVICE MODE
1.
Setting the Test Mode
Page 2F
Address 21
Data
Function
00
Normal
01
Forced MOVIE mode
03
Forced PLAY mode
05
Forced CAMERA mode
• Before setting the data, select page: 00, address: 01, and set
data: 01.
• In the case of page 2F, writing the data by clicking
[Write]
on
the SEUS screen causes the data to be written to the nonvolatile
memory. In this case, the Test mode is not released even if the
set is turned off, thus requiring extreme care.
memory. In this case, the Test mode is not released even if the
set is turned off, thus requiring extreme care.
• After the adjustment/repair finished, be sure to return the data
to “00” to restore the Normal mode. Also, select page: 00, ad-
dress: 01, and set data: 00.
dress: 01, and set data: 00.
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