Sony DCR-TRV12E / DCR-TRV14E / DCR-TRV19 / DCR-TRV19E (serv.man4) Service Manual ▷ View online
6-31
DCR-TRV12E/TRV14E/TRV19/TRV19E
2. PSIG GRAY Adjustment (PD-188 board)
Set the PSIG signal level to an appropriate level.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 5 of CN1004 of VC-311 board
(PANEL COM)
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4C
Specified Value
A = 5.00 ± 0.10V
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
4C
Change the data and set the PSIG
signal level (A) to the specified
value. (The data should be “00”
to “7F”.)
signal level (A) to the specified
value. (The data should be “00”
to “7F”.)
3
C
4C
Press PAUSE button.
4
0
01
00
Set the data.
3. RGB AMP Adjustment (PD-188 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 9 of CN1004 of VC-311 board
(PANEL VG)
(PANEL VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4A
Specified Value
A = 7.58 ± 0.05V (NTSC)
A = 7.46 ± 0.05V (PAL)
A = 7.46 ± 0.05V (PAL)
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
4A
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
3
C
4A
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 6-1-20.
Pedestal
Pedestal
A
2H
Fig. 6-1-19.
A
2H
6-32
DCR-TRV12E/TRV14E/TRV19/TRV19E
4. Black Limit Adjustment (PD-188 board)
Set the video signal level for driving the LCD driver to an appropriate
level.
level.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 5 of CN1004 of VC-311 board
(PANEL COM)
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4B
Specified Value
A = 8.30 ± 0.08V
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
2
3
C4
61
Set the data.
3
3
C5
Set the following data.
5B (NTSC), 53 (PAL)
5B (NTSC), 53 (PAL)
4
C
4B
Change the data and set the PSIG
signal amplitude (A) to the
specified value. (The data
should
be “00” to “0F”)
signal amplitude (A) to the
specified value. (The data
should
be “00” to “0F”)
5
C
4B
Press PAUSE button.
6
3
C4
00
Set the data.
7
3
C5
00
Set the data.
8
0
01
00
Set the data.
9
Check that the specified value of
“RGB AMP Adjustment” is
satisfied. If not, perform “RGB
AMP Adjustment”.
“RGB AMP Adjustment” is
satisfied. If not, perform “RGB
AMP Adjustment”.
5. Contrast Adjustment (PD-188 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 9 of CN1004 of VC-311 board
(PANEL VG)
(PANEL VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4F
Specified Value
A = 2.54 ± 0.05V (NTSC)
A = 2.58 ± 0.05V (PAL)
A = 2.58 ± 0.05V (PAL)
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
4F
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
C
4F
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 6-1-21.
A
V
Fig. 6-1-22.
100 IRE
Pedestal
A
2H
6-33
DCR-TRV12E/TRV14E/TRV19/TRV19E
6. Center Level Adjustment (PD-188 board)
Set the video signal center level of LCD panel to an appropriate
level.
level.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 9 of CN1004 of VC-311 board
(PANEL VG)
(PANEL VG)
Measuring Instrument
Digital voltmeter
Adjustment Page
C
Adjustment Address
50
Specified Value
A = 7.00 ± 0.03Vdc
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
50
Change the data and set the DC
voltage (A) to the specified value.
(The data should be “00” to “7F”.)
voltage (A) to the specified value.
(The data should be “00” to “7F”.)
3
C
50
Press PAUSE button.
4
0
01
00
Set the data.
7. V COM Adjustment (PD-188 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
C
Adjustment Address
49
Specified Value
The brightness difference between the
section A and section B is minimum.
section A and section B is minimum.
Note1:
This adjustment should be carried out upon completion of the
following adjustments.
following adjustments.
RGB AMP Adjustment
Black Limit Adjustment
Contrast Adjustment
Center Level Adjustment
Black Limit Adjustment
Contrast Adjustment
Center Level Adjustment
Note2:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
49
Change the data so that the
brightness of the section A and
that of the section B is equal.
(Note3)
brightness of the section A and
that of the section B is equal.
(Note3)
3
C
49
Subtract 2 from the data.(Note3)
4
C
49
Press PAUSE button.
5
0
01
00
Set the data.
Note3:
The data should be “00” to “3F”.
Fig. 6-1-23.
A
A
A
A
B
B
B
B
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DCR-TRV12E/TRV14E/TRV19/TRV19E
8. White Balance Adjustment (PD-188 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
C
Adjustment Address
4D, 4E
Specified Value
The LCD screen should not be colored.
Note1:
Check the white balance only when replacing the following parts.
If necessary, adjust them.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC6001
2. Light induction plate
3. IC6001
Note2:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
4D
80
Set the data, and press PAUSE
button.
button.
3
C
4E
80
Set the data, and press PAUSE
button.
button.
4
C
4E
Check that the LCD screen is not
colored. If not colored, proceed to
step 10.
colored. If not colored, proceed to
step 10.
5
C
4D
Change the data so that the LCD
screen is not colored.
screen is not colored.
6
C
4D
Press PAUSE button.
7
C
4E
Change the data so that the LCD
screen is not colored.
screen is not colored.
8
C
4E
Press PAUSE button.
9
C
4E
If the LCD screen is colored,
repeat steps 5 to 9.
repeat steps 5 to 9.
10
0
01
00
Set the data.
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