DOWNLOAD Sony DSC-P8 (serv.man4) Service Manual ↓ Size: 426.24 KB | Pages: 37 in PDF or view online for FREE

Model
DSC-P8 (serv.man4)
Pages
37
Size
426.24 KB
Type
PDF
Document
Service Manual
Brand
Device
Digital Camera / SECTION 6 ADJUSTMENTS
File
dsc-p8-sm4.pdf
Date

Sony DSC-P8 (serv.man4) Service Manual ▷ View online

DSC-P8
6-27
1-5.
LCD SYSTEM ADJUSTMENTS
Before perform the camera system adjustments, check that the
specified values of “VIDEO SYSTEM ADJUSTMENTS” are sat-
isfied.
Note 1:
Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
Note 2:
Set the LCD BRIGHTENSS (SET UP setting) to the
NORMAL.
COVER
COVER
1. LCD Initial Data Input
Mode
PLAY
Signal
Arbitrary
Adjustment Page
4F
Adjustment Address
80 to 8A, 8D, 92, 93, A3, A4
Note:
“Memory Stick” must be insertde.
Input method:
1) Select page: 00, address: 01, and set data: 01.
2) Select page: 4F, and write the data given in the following table.
Address
Data
Remark
80
4E
Fixed value
81
FF
82
90
VCO adjustment (NTSC mode)
83
9A
VCO adjustment (PAL mode)
84
91
V-COM adjustment
85
AF
Bright adjustment
86
2D
Black Limit adjustment
87
41
Fixed value
88
8C
White Blance adjustment
89
6C
8A
42
Contrast adjustment
8D
BE
Fixed value
92
2D
93
0E
A3
24
A4
1C
Processing after Completing Input:
1) Select page: 00, address: 01, and set data: 00.
DSC-P8
6-28
3.
Bright Adjustment (SW-386 Board)
Set the amplitude of the RGB decoder for driving the LCD to the
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 4F
Adjustment Page
4F
Adjustment Address
85
Specified value
00
Adjusting method:
Order Page Address
Data
Procedure
1
00
01
01 
[Set]
2
4F
02
02 
[Set]
3
4F
8F
AF 
[Set]
4
40
4F
02 
[Set]
5
40
4E
01 
[Set]
6
40
4F
[Read]
Check that the data
satisfied the specified
value.
Processing after Completing Adjustments:
Order Page Address
Data
Procedure
1
4F
02
[Read]
2
00
01
00 
[Set]
2.
VCO Adjustment (SW-386 Board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 4F
Adjustment Page
4F
Adjustment Address
82 (NTSC mode)
83 (PAL mode)
Specified value
00
Menu setting:
1) VIDEO OUT of SET UP menu
................................. NTSC (NTSC mode)
(This adjustment must be performed in NTSC mode, so don’t set
the menu setting to “PAL”)
Adjusting method:
Order Page Address
Data
Procedure
1
00
01
01 
[Set]
2
4F
02
02 
[Set]
3
4F
99
1C 
[Set]
4
40
4F
01 
[Set]
5
40
4E
01 
[Set]
6
40
4F
[Read]
Check that the data
satisfied the specified
value.
7
4F
99
1D 
[Set]
8
40
1D
82 
[Set]
9
40
4F
01 
[Set]
10
40
4E
01 
[Set]
11
40
4F
[Read]
Check that the data
satisfied the specified
value.
Processing after Completing Adjustments:
Order Page Address
Data
Procedure
1
40
1D
80 
[Set]
2
4F
02
[Read]
3
00
01
00 
[Set]
DSC-P8
6-29
4.
Contrast Adjustment (SW-386 Board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 4F
Adjustment Page
4F
Adjustment Address
8A
Specified value
00
Note:
Perform “Bright Adjustment” before this adjustment.
Adjusting method:
Order Page Address
Data
Procedure
1
00
01
01 
[Set]
2
4F
02
02 
[Set]
3
4F
91
40 
[Set]
4
40
4F
03 
[Set]
5
40
4E
01 
[Set]
6
40
4F
[Read]
Check that the data
satisfied the specified
value.
Processing after Completing Adjustments:
Order Page Address
Data
Procedure
1
4F
02
[Read]
2
00
01
00 
[Set]
5.
Black Limit Adjustment (SW-386 Board)
Set the maximum amplitude of the RGB decoder for driving the
LCD to the specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 4F
Adjustment Page
4F
Adjustment Address
86
Specified value
00
Note:
Perform “Bright Adjustment” before this adjustment.
Adjusting method:
Order Page Address
Data
Procedure
1
00
01
01 
[Set]
2
4F
02
02 
[Set]
3
4F
9F
B5 
[Set]
4
40
4F
04 
[Set]
5
40
4E
01 
[Set]
6
40
4F
[Read]
Check that the data
satisfied the specified
value.
Processing after Completing Adjustments
Order Page Address
Data
Procedure
1
4F
02
[Read]
2
00
01
00 
[Set]
DSC-P8
6-30
Fig. 6-1-15
A
A
A
A
B
B
B
B
6.
V-COM Adjustment (SW-386 Board)
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
4F
Adjustment Address
84
Specified value
The brightness difference between
the section-A and section-B is
minimum
Adjusting method:
Order Page Address
Data
Procedure
1
00
01
01 
[Set]
2
4F
02
03 
[Set]
3
40
F1
82 
[Set]
4
4F
84
Change the data so that
brightness of the section
A and section B is equal.
5
4F
84
[Write]
Subtract 6 from the data,
and write this data.
Processing after Completing Adjustments:
Order Page Address
Data
Procedure
1
40
F1
00 
[Set]
2
4F
02
[Read]
3
00
01
00 
[Set]
7.
White Balance Adjustment (SW-386 Board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on the LCD screen
Measuring Instrument
Adjustment Page
4F
Adjustment Address
88,89
Specified value
LCD screen must not be colored
Note 1:
Check the white balance only when replacing the
following parts. If necessary, adjust them.
1. LCD901 PANEL UNIT
2. IC101
Adjusting method:
Order Page Address
Data
Procedure
1
00
01
01 
[Set]
2
4F
02
03 
[Set]
3
40
F1
03 
[Set]
4
4F
88
8C 
[Set]
Set the data.
(Initial value)
5
4F
89
6C 
[Set]
Set the data.
(Initial value)
6
Check that the LCD
screen is not colored. If
not colored, proceed to
“Processing after
Completing Adjust-
ments”.
7
4F
88
[Write]
Change the data so that
the LCD screen is not
89
colored, and write this
data.
Processing after Completing Adjustments:
Order Page Address
Data
Procedure
1
40
F1
00 
[Set]
2
4F
02
[Read]
3
00
01
00 
[Set]
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