Sony DSC-F77 / DSC-FX77 (serv.man3) Service Manual ▷ View online
DSC-F77/FX77
6-35
2.
LCD Initial Data Input (2)
Mode
PLAY
Signal
Arbitrary
Adjustment Page
B
Adjustment Address
3A to 3F
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: B, and enter the data given in the following table.
1) Select page: 0, address: 01, and set data: 01.
2) Select page: B, 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).
data are written to non-volatile memory (EEPROM).
Address
Data
Remark
3A
57
3B
FE
3C
02
Fixed data
3D
5A
3E
00
3F
01
Processing after Completing Adjustments:
1) Select page: 0, address: 01, and set data: 00.
1) Select page: 0, address: 01, and set data: 00.
1.
LCD Initial Data Input (1)
Mode
PLAY
Signal
Arbitrary
Adjustment Page
A
Adjustment Address
67 to 6A, 6D to 6F, 80 to 8F, A3, A4
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.
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).
data are written to non-volatile memory (EEPROM).
Address
Data
Remark
67
15
68
22
69
21
6A
38
6D
4C
Fixed value
6E
4C
6F
4C
80
C4
81
18
82
80
VCO Adjustment (NTSC mode)
83
96
VCO Adjustment (PAL mode)
84
9E
V-COM Adjustment
85
BD
Bright Adjustment
86
08
Fixed value
87
38
PSIG Level Adjustment
88
94
White Balance Adjustment
89
72
8A
46
Contrast Adjustment
8B
36
VG Center Adjustment
8C
2D
8D
2E
8E
80
Fixed value
8F
1F
A3
28
A4
01
Processing after Completing Adjustments:
1) Select page: 0, address: 01, and set data: 00.
1) Select page: 0, address: 01, and set data: 00.
DSC-F77/FX77
6-36
3.
VCO Adjustment (SY-81 Board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL701 of SY-81 board (HDO)
Measuring Instrument
Frequency counter
Adjustment Page
A
Adjustment Address
82 (NTSC mode)
83 (PAL mode)
83 (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
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” )
set the menu setting to “PAL” )
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button.
3
4
F1
13
4
A
82
Change the data and set the
frequency (f) to the NTSC
specified value.
frequency (f) to the NTSC
specified value.
5
A
82
Press PAUSE button.
6
4
1D
82
7
A
83
Change the data and set the
frequency (f) to the PAL
specified value.
frequency (f) to the PAL
specified value.
8
A
83
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button.
2
4
F1
00
3
4
1D
80
4
0
01
00
Fig. 6-1-18
A
2H
4. PSIG Level Adjustment (SY-81 Board)
Set the common electrode drive signal level of LCD to the speci-
fied value.
fied value.
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL702 of SY-81 board (PSIG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
87
Specified Value
A = 5.00
± 0.10 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
02
4
A
87
Change the data and set the PSIG
signal level (A) to the specified
value. (Note)
signal level (A) to the specified
value. (Note)
5
A
87
Press PAUSE button.
Note:
Adjust it between data 00 and 7F.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
DSC-F77/FX77
6-37
Fig. 6-1-19
2H
Pedestal
Pedestal
A
A: Between the reversed waveform pedestal and non-reversed
waveform pedestal
5.
Bright Adjustment (SY-81 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).
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL704 of SY-81 board (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
85
Specified Value
A = 7.96
± 0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
03
4
A
85
Change the data and set the
voltage (A) to the specified
value.
voltage (A) to the specified
value.
5
A
85
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
2H
A
Pedestal
10 steps peak
A: Between the pedestal and 10 steps peak
6. Contrast Adjustment (SY-81 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).
fied value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL704 of SY-81 board (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
8A
Specified Value
A = 2.50
± 0.05 Vp-p
Adjusting method:
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
8A
voltage (A) to the specified
value. (Note)
value. (Note)
5
A
8A
Press PAUSE button.
Note:
Adjust it between data 00 and 7F.
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. 6-1-20
DSC-F77/FX77
6-38
7. VG Center Adjustment (SY-81 Board)
Set the center of VG signal for driving the LCD to the specified
value.
value.
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL704 of SY-81 board (VG)
Measuring Instrument
Digital voltmeter
Adjustment Page
A
Adjustment Address
8B
Specified Value
A = 7.00
± 0.05 Vdc
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
02
Change the data and set the
4
A
8B
DC voltage (A) to the specified
value. (Note)
value. (Note)
5
A
8B
Press PAUSE button.
Note:
Adjust it between data 00 and 7F.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
8.
V-COM Adjustment (SY-81 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.
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
between the section-A and
section-B is minimum
Note 1:
Perform “Bright Adjustment” and “Contrast Adjustment”
before this adjustment.
before this adjustment.
Adjusting method:
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. (Note 2)
brightness of the section A and
section B is equal. (Note 2)
5
A
84
Subtract 2 from the data.
6
A
84
Press PAUSE button.
Note 2:
Adjust it between data 80 and BF.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE buttton
2
4
F1
00
3
0
01
00
Fig. 6-1-21
A
A
A
A
B
B
B
B
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