DOWNLOAD Sony DSC-F717 (serv.man4) Service Manual ↓ Size: 521.86 KB | Pages: 56 in PDF or view online for FREE

Model
DSC-F717 (serv.man4)
Pages
56
Size
521.86 KB
Type
PDF
Document
Service Manual
Brand
Device
Digital Camera / SECTION 6 ADJUSTMENTS
File
dsc-f717-sm4.pdf
Date
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DSC-F717
6-43
COVER
COVER
1-6.
COLOR ELECTRONIC VIEWFINDER SYSTEM
ADJUSTMENTS
Before perform the color electronic viewfinder system adjustments,
check that the specified values of “VIDEO SYSTEM ADJUST-
MENTS” are satisfied.
Note 1:
Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
Note 2:
Set the EVF BACKLIGHT (SET UP setting) to the NOR-
MAL.
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN305 of the FR-194 board.
Connect the Measuring Instruments via the CPC-12 jig (J-6082-
436-A).
The following table shows the Pin No. and signal name of CN305.
Pin No.
Signal Name
Pin No.
Signal Name
1
BL_L1
12
LANC_OUT
2
N.C.
13
MAKER_RECOG
3
N. C.
14
N.C.
4
REG_GND
15
N.C.
5
N. C.
16
N.C.
6
BL_L2
17
N.C.
7
PANEL_HSY
18
N.C.
8
PANEL_COM
19
EVF_BL
9
PANEL_VG
20
EVF_BL_4.75V
10
CPC_UNREG
21
EVF_VG
11
LANC_IN
22
EVF_VCO
Fig. 6-1-23
CPC cover
CPC-12 jig
(J-6082-436-A)
FR-194 board
CN305
22
1
DSC-F717
6-44
1.
EVF Initial Data Input
Mode
PLAY
Signal
Arbitrary
Adjustment Page
A
Adjustment Address
90 to 9D, A2
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: A, and enter the data given in the following table.
Note:
Press the PAUSE button each time the data are set, as the
data are written to non-volatile memory (EEPROM).
Address
Data
Remark
90
30
Fixed value
91
72
92
34
VCO Adjustment (NTSC mode)
93
44
VCO Adjustment (PAL mode)
94
28
Fixed value
95
7F
Bright Adjustment
96
08
Fixed value
97
80
98
94
White Balance Adjustment
99
82
9A
25
Contrast Adjustment
9B
1D
Fixed value
9C
2B
9D
00
A2
30
Processing after Completing Adjustments:
1) Select page: 0, address: 01, and set data: 00.
2.
VCO Adjustment (PD-179 Board)
Set the VCO free-run frequency. If deviated, the EVF screen will
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin ws of CN305 on FR-194
board (EVF_VCO)
Measuring Instrument
Frequency counter
Adjustment Page
A
Adjustment Address
92 (NTSC mode)
93 (PAL mode)
Specified Value
f = 15734 
±
 100 Hz (NTSC mode)
f = 15625 
±
 100 Hz (PAL mode)
Menu setting:
1) VIDEO OUT of SET UP setting
.........................    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
0
01
01
2
A
02
23
Press PAUSE button.
3
4
F1
13
(NTSC mode)
4
4
1D
82
(PAL mode)
5
A
92
Change the data and set the
frequency (f) to the NTSC
specified value.
6
A
92
Press PAUSE button.
7
A
93
Change the data and set the
frequency (f) to the PAL
specified value.
8
A
93
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button.
2
4
F1
00
(NTSC mode)
3
4
1D
80
(PAL mode)
4
0
01
00
DSC-F717
6-45
3.
Bright Adjustment (PD-179 Board)
Set the D Range of the RGB decoder for driving the LCD to the
specified value.
If deviated, the EVF screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin wa of CN305 on FR-194
board (EVF_VG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
95
Specified Value
A = 7.00 
±
 0.10 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
23
Press PAUSE button.
3
4
F1
03
4
A
95
Change the data and set the
voltage (A) to the specified
value.
5
A
95
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button.
2
4
F1
00
3
0
01
00
4.
Contrast Adjustment (PD-179 Board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value.
If deviated, the EVF screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin wa of CN305 on FR-194
board (EVF_VG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
9A
Specified Value
A = 1.75 
±
 0.10 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
23
Press PAUSE button.
3
4
F1
03
4
A
9A
Change the data and set the
voltage (A) to the specified
value.
5
A
9A
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button.
2
4
F1
00
3
0
01
00
Fig. 6-1-24
2H
A
Pedestal
Pedestal
A: Between the reversed waveform pedestal and non-reversed
waveform pedestal
Fig. 6-1-25
2H
A
Pedestal
10 steps peak
A: Between the pedestal and 10 steps peak
DSC-F717
6-46
5.
White Balance Adjustment (PD-179 Board)
Correct the white balance.
If deviated, the EVF screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on EVF screen
Measuring Instrument
Adjustment Page
A
Adjustment Address
98, 99
Specified Value
EVF screen must not be colored
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
23
Press PAUSE button.
3
4
F1
02
4
A
98
94
Press PAUSE button.
99
82
(Initial value)
5
Check that the EVF screen is
not colored. If not colored,
proceed to “Processing after
Completing Adjustments”.
6
A
98
Change the data so that the
EVF screen is not colored.
99
(Note)
Note:
To write in the non-volatile memory (EEPROM), press the
PAUSE button each time to set the data.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button.
2
4
F1
00
3
0
01
00
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