Sony GV-D200 Service Manual ▷ View online
5-35
2. LCD Initial Data Input (2)
Mode
VTR stop
Signal
No signal
Adjustment Page
D
Adjustment Address
A0 to B1
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: D, and input the data in the following table.
Note:
To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each time
to set the data.
PAUSE button of the adjustment remote commander each time
to set the data.
3)
Select page: 0, address: 01, and set data: 00.
3. VCO Adjustment (PD-130 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 8 of CN5502 (XHD OUT)
Measuring Instrument
Frequency counter
Adjustment Page
D
Adjustment Address
A2 (NTSC)
A2, A3 (PAL)
A2, A3 (PAL)
Specified Value
f = 15734 ± 30Hz (NTSC)
f = 15625 ± 30Hz (PAL)
f = 15625 ± 30Hz (PAL)
Note 1:
NTSC: GV-D800
PAL: GV-D800E
PAL: GV-D800E
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A2
Change the data and set the VCO
frequency (f) to the specified
value.
frequency (f) to the specified
value.
3
D
A2
Press PAUSE button.
4
Only for NTSC model, proceed
to step 10.
to step 10.
5
D
A2
Read the data, and this data is
named D
named D
A2
.
6
Convert D
A2
to decimal
notation, and obtain D
A2
’.
(Note2)
7
Calculate D
A3
’ using following
equations (Decimal calculation)
When D
When D
A2
’ 23
D
A3
’= D
A2
’ – 23
When D
A2
’ < 23
D
A3
’ = 00
8
Convert D
A3
’ to a hexadecimal
number, and obtain D
A3
.
(Note2)
9
D
A3
D
A3
Set the data, and press PAUSE
button.
button.
10
0
01
00
Set the data.
Note 2:
Refer to “Table 5-4-1. Hexadecimal-decimal Conversion Table”.
Remark
Fixed data
Fixed data
VCO adj.
Fixed data
V-COM adj.
RGB AMP adj.
Fixed data
COM AMP adj.
White balance adj.
White balance adj.
Contrast adj.
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Data
7D
A6
80
70
80
30
00
C0
80
80
50
00
33
14
9F
1F
FC
FF
Address
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AA
AB
AC
AD
AE
AF
B0
B1
Table. 5-3-13.
5-36
4. RGB AMP Adjustment (PD-130 board)
Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 3 of CN5502 (VG)
External trigger: Pin 4 of CN5502
(PANEL COM)
External trigger: Pin 4 of CN5502
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
A5
Specified Value
A = 3.59 ± 0.05V
Note:
Press the DISPLAY button and erase the screen indicators.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A5
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
(The data should be “00” to
“3F”.)
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
(The data should be “00” to
“3F”.)
3
D
A5
Press PAUSE button.
4
0
01
00
Set the data.
5. Contrast Adjustment (PD-130 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 3 of CN5502 (VG)
External trigger: Pin 4 of CN5502
(PANEL COM)
External trigger: Pin 4 of CN5502
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
AA
Specified Value
A = 3.34 ± 0.07V
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
AA
Change the data and set the
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value.
(The data should be “00” to
“7F”.)
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value.
(The data should be “00” to
“7F”.)
3
D
AA
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 5-3-20.
Fig. 5-3-21.
Pedestal
A
2H
Pedestal
0 IRE
100 IRE
A
2H
5-37
6. COM AMP Adjustment (PD-130 board)
Set the common electrode drive signal level of LCD to the specified
value.
value.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 4 of CN5502 (PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
A7
Specified Value
A = 6.33 ± 0.05Vdc
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A7
Change the data and set the
PANEL COM signal level (A) to
the specified value.
PANEL COM signal level (A) to
the specified value.
3
D
A7
Press PAUSE button.
4
0
01
00
Set the data.
7. V-COM Adjustment (PD-130 board)
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
Mode
VTR stop
Signal
No signal
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
D
Adjustment Address
A4
Specified Value
The brightness difference between the
section A and section B is minimum.
section A and section B is minimum.
Note:
Perform “RGB AMP Adjustment”, “Contrast Adjustment” and
“COM AMP Adjustment” before this adjustment.
“COM AMP Adjustment” before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A4
Change the data so that the
brightness of the section A and
that of the section B is equal.
brightness of the section A and
that of the section B is equal.
3
D
A4
Subtract 8 from the data.
4
D
A4
Press PAUSE button.
5
0
01
00
Set the data.
A
2H
A
A
A
A
B
B
B
B
Fig. 5-3-23.
Fig. 5-3-22.
5-38
8. White Balance Adjustment (PD-130 board)
Correct the white balance.
If deviated, the reproduction of the LCD screen may degenerate.
If deviated, the reproduction of the LCD screen may degenerate.
Mode
VTR stop
Signal
No signal
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
A8, A9
Specified Value
The LCD screen should not be
colored.
colored.
Note 1:
Check the white balance only when replacing the following parts.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC5501
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC5501
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A8
80
Set the data, and press PAUSE
button.
button.
3
D
A9
80
Set the data, and press PAUSE
button.
button.
4
D
A9
Check that the LCD screen is
not colored. If not colored,
proceed to step 10.
not colored. If not colored,
proceed to step 10.
5
D
A8
Change the data so that the LCD
screen is not colored.
screen is not colored.
6
D
A8
Press PAUSE button.
7
D
A9
Change the data so that the LCD
screen is not colored.
screen is not colored.
8
D
A9
Press PAUSE button.
9
D
A9
If the LCD screen is colored,
repeat steps 5 to 9.
repeat steps 5 to 9.
10
0
01
00
Set the data.
