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Model
DCR-TRV75 DCR-TRV75E DCR-TRV80 DCR-TRV80E (serv.man4)
Pages
70
Size
1.34 MB
Type
PDF
Document
Service Manual
Brand
Device
Movie / SECTION 6 ADJUSTMENTS
File
dcr-trv75-dcr-trv75e-dcr-trv80-dcr-trv80e-sm4.pdf
Date

Sony DCR-TRV75 / DCR-TRV75E / DCR-TRV80 / DCR-TRV80E (serv.man4) Service Manual ▷ View online

6-38
DCR-TRV75/TRV75E/TRV80/TRV80E
2. RGB AMP Adjustment (DI-089 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).
Note:
Do either of the automatic adjustment or the manual adjustment.
2-1. Automatic Adjustment
Mode
Camera
Subject
Arbitrary
Adjustment Page
C
Adjustment Address
39
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
3
01
50
Set the data, and press PAUSE
button.
3
3
02
Check that the data changes from
“50” to “00”.
4
3
01
00
Set the data, and press PAUSE
button.
5
0
01
00
Set the data.
2-2. Manual Adjustment
Mode
Camera
Subject
Arbitrary
Measurement Point
Pin qd of CN1004 of VC-316 board
(EVF VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
39
Specified Value
A = 7.00 ± 0.05V
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
39
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to the
specified value.
3
C
39
Press PAUSE button.
4
0
01
00
Set the data.
Pedestal
Pedestal
A
2H
Fig. 6-1-19.
6-39
DCR-TRV75/TRV75E/TRV80/TRV80E
3. Contrast Adjustment (DI-089 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).
Note:
Do either of the automatic adjustment or the manual adjustment.
3-1. Automatic Adjustment
Mode
Camera
Subject
Arbitrary
Adjustment Page
C
Adjustment Address
3E
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
3
01
51
Set the data, and press PAUSE
button.
3
3
02
Check that the data changes from
“51” to “00”.
4
3
01
00
Set the data, and press PAUSE
button.
5
0
01
00
Set the data.
3-2. Manual Adjustment
Mode
Camera
Subject
Arbitrary
Measurement Point
Pin qd of CN1004 of VC-316 board
(EVF VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
3E
Specified Value
A = 2.40 ± 0.05V
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
3E
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”.)
3
C
3E
Press PAUSE button.
4
0
01
00
Set the data.
100 IRE
Pedestal
A
2H
Fig. 6-1-20.
6-40
DCR-TRV75/TRV75E/TRV80/TRV80E
4. White Balance Adjustment (DI-089 board)
Correct the white balance.
If deviated, the reproduction of the EVF screen may degenerate.
Mode
Camera
Subject
Arbitrary
Measurement Point
Check on EVF screen
Measuring Instrument
Adjustment Page
C
Adjustment Address
3C, 3D
Specified Value
The EVF screen should not be colored.
Note1:
Check the white balance only when replacing the following parts.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC3202
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
3C
80
Set the data, and press PAUSE
button.
3
C
3D
74
Set the data, and press PAUSE
button.
4
C
3D
Check that the EVF screen is not
colored. If not colored, proceed to
step 10.
5
C
3C
Change the data so that the EVF
screen is not colored.
6
C
3C
Press PAUSE button.
7
C
3D
Change the data so that the EVF
screen is not colored.
8
C
3D
Press PAUSE button.
9
C
3D
If the EVF screen is colored,
repeat steps 5 to 9.
10
0
01
00
Set the data.
6-41
DCR-TRV75/TRV75E/TRV80/TRV80E
1-5.
LCD SYSTEM ADJUSTMENT
Note1:
The back light (fluorescent tube) is driven by a high voltage AC
power supply. Therefore, do not touch the back light holder to
avoid electrical shock.
Note2:
When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note3:
Before performing the adjustments, check the data of page: 0,
address: 10 is “00”. If not, set data: 00 to this address.
Note4:
NTSC model: DCR-TRV75/TRV80
PAL model: DCR-TRV75E/TRV85E
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN1004 of the VC-316 board. Connect the
measuring instruments via the multi CPC-7 jig (J-6082-382-A). The
following table shows the Pin No. and signal name of CN1004.
1. VCO Adjustment (PD-192 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 7 of CN1004 of VC-316 board
(H START)
Measuring Instrument
Frequency counter
Adjustment Page
C
Adjustment Address
47, 48
Specified Value
f = 15734 ± 30Hz (NTSC)
f = 15625 ± 30Hz (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
47
Change the data and set the
VCO frequency (f) to the
specified value.
3
C
47
Press PAUSE button.
4
C
47
Read the data, and this data is
named D
47
.
5
C
48
D
47
Set the data, and press PAUSE
button.
6
0
01
00
Set the data.
Fig. 6-1-21.
Pin No.
1
2
3
4
5
6
7
8
Signal Name
FRRV
RF MON
RF IN/LANC JACK IN
SWP
PANEL COM
REG_GND
H START
REG_GND
Pin No.
9
10
11
12
13
14
15
16
Signal Name
PANEL VG
REG_GND
EVF VCO
REG_GND
EVF VG
EXT DA
N.C.
N.C.
Table 6-1-15.
COVER
COVER
CN1004
16
1
Remove the 
CPC lid.
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