Sony DCR-TRV940 / DCR-TRV940E / DCR-TRV950 / DCR-TRV950E (serv.man4) Service Manual ▷ View online
DCR-TRV940/TRV940E/TRV950/TRV950E
6-42
COVER
COVER
1
19
CN1008
2
20
1.
VCO Adjustment (DB-014 board)
Set the VCO free-run frequency. If deviated, the EVF screen will
be blurred.
be blurred.
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 5 of CN1008 (EVF_VCO) on
VC-288 board
VC-288 board
Measuring Instrument
Frequency counter
Adjustment Page
C
Adjustment Address
51, 52
Specified Value
f = 15734
±
30 Hz (NTSC)
f = 15625
±
30 Hz (PAL)
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
NTSC model: DCR-TRV940/TRV950
PAL model: DCR-TRV940E/TRV950E
PAL model: DCR-TRV940E/TRV950E
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
51
Change the data and set the
frequency (f) to the specified
value.
frequency (f) to the specified
value.
3
C
51
Press PAUSE button.
4
C
51
Read the data and this data is
named D
named D
51
.
5
Convert D
51
to decimal
notation, and obtain D
51
’.
(Note 3)
6
Calculate D
52
’ using
following equations.
(decimal calculation)
D
(decimal calculation)
D
52
’ = D
51
’ + 24 (NTSC model)
D
52
’ = D
51
’ – 24 (PAL model)
7
Convert D
52
’ to a hexadeci-
mal number, and obtain D
52
.
(Note 3, 4)
8
C
52
D
52
Press PAUSE button.
9
0
01
00
Note 3:
Refer to table 6-4-1. “Hexadecimal-decimal conversion
table”
table”
Note 4:
If D
52
’ > 255, then D
52
= FF (NTSC model)
If D
52
’ < 0, then D
52
= 00 (PAL model)
1-4.
COLOR ELECTRONIC VIEWFINDER
SYSTEM ADJUSTMENTS
SYSTEM ADJUSTMENTS
Before perform the viewfinder system adjustments, check the data
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
Note 1:
Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
display module by static electricity when replacing it.
Note 2:
Set the VF B. L. (Menu setting) to the BRT NORMAL.
Note 3:
Perform the following data setting before the viewfinder
system adjustments.
system adjustments.
1) Select page: 3, address: C4, and set data: 67.
2) Select page: 3, address: C5, and set data: 01.
2) Select page: 3, address: C5, and set data: 01.
Reset the data after completing adjustment.
1) Select page: 3, address: C4, and set data: 00.
2) Select page: 3, address: C5, and set data: 00.
2) Select page: 3, address: C5, and set data: 00.
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN1008 of the VC-288 board.
Connect the Measuring Instruments via the CPC-8 jig (J-6082-
388-A).
The following table shown the Pin No. and signal name of CN1008.
are concentrated in CN1008 of the VC-288 board.
Connect the Measuring Instruments via the CPC-8 jig (J-6082-
388-A).
The following table shown the Pin No. and signal name of CN1008.
Pin No. Signal Name
Pin No. Signal Name
1
N.C.
2
D_2.8V
3
EVF_LED_DA
4
EVF_VG
5
EVF_VCO
6
GND
7
MD2
8
XCS_MC_FLASH
9
XINIT
10
XCS_ST_IMAGE_IC
11
DRUM_ON
12
FRRV
13
REC_CRRT1
14
REC_CRRT0
15
REG_GND
16
HI_XRESET
17
SWP
18
RF_IN
19
GND
20
RF_MON
Fig. 6-1-24
DCR-TRV940/TRV940E/TRV950/TRV950E
6-43
2.
RGB AMP Adjustment (DB-014 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).
specified value.
If deviated, the EVF screen image will be blackish or saturated
(whitish).
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 4 of CN1008 (EVF_VG) on
VC-288 board
VC-288 board
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
54
Specified Value
A = 7.00
±
0.05 Vp-p
Note:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
54
Change the data and set the
voltage (A) to the specified
value.
voltage (A) to the specified
value.
3
C
54
Press PAUSE button.
4
0
01
00
A: Between the reversed waveform pedestal
and non-reversed waveform pedestal
Fig. 6-1-25
Pedestal
Pedestal
A
2H
3.
Contrast Adjustment (DB-014 board)
Set the video signal level for driving the LCD to the specified
value.
If deviated, the EVF screen image will be blackish or saturated
(whitish).
value.
If deviated, the EVF screen image will be blackish or saturated
(whitish).
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 4 of CN1008 (EVF_VG) on
VC-288 board
VC-288 board
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
58
Specified Value
A = 2.40
±
0.05 Vp-p
Note:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
58
Change the data and set the
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
58
Press PAUSE button.
4
0
01
00
A: Between the pedestal and 3 steps peak
Fig. 6-1-26
3 steps peak
Pedestal
A
2H
DCR-TRV940/TRV940E/TRV950/TRV950E
6-44
5.
White Balance Adjustment (DB-014 board)
Correct the white balance.
If deviated, the EVF screen color cannot be reproduced.
If deviated, the EVF screen color cannot be reproduced.
Mode
CAMERA
Subject
Not required
Measurement Point
Check on EVF screen
Measuring Instrument
Adjustment Page
C
Adjustment Address
56, 57
Specified Value
EVF screen must not be colored
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
Check the white balance only when replacing the fol-
lowing parts. If necessary, adjust them.
lowing parts. If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC4201
2. Light induction plate
3. IC4201
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
56
80
Press PAUSE button.
3
C
57
80
Press PAUSE button.
4
Check that the EVF screen is
not colored. If not colored,
proceed to step 6.
not colored. If not colored,
proceed to step 6.
5
C
Change the data so that the
EVF screen is not colored.
(Note 3)
EVF screen is not colored.
(Note 3)
6
0
01
00
Note 3:
To write in the non-volatile memory (EEPROM), press
the PAUSE button each time to set the data.
the PAUSE button each time to set the data.
56
57
4.
Back Light Adjustment (DB-014 board)
Set the back light luminance.
If deviated, the image may become dark or bright.
If deviated, the image may become dark or bright.
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 3 of CN1008 (EVF_LED_DA)
on VC-288 board
on VC-288 board
Measuring Instrument
Digital voltmeter
Adjustment Page
C
Adjustment Address
4F, 50
Specified Value
BRIGHT mode:
A = 2.10
±
0.05 Vdc
NORMAL mode:
B = 1.12
±
0.05 Vdc
Note:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
3
0C
20
Press PAUSE button.
3
3
22
11
Press PAUSE button.
4
C
50
Change the data and set the
DC voltage (A) to the
specified value of BRIGHT
mode.
DC voltage (A) to the
specified value of BRIGHT
mode.
5
C
50
Press PAUSE button.
6
C
4F
Change the data and set the
DC voltage (B) to the
specified value of NORMAL
mode.
DC voltage (B) to the
specified value of NORMAL
mode.
7
C
4F
Press PAUSE button.
8
3
0C
00
Press PAUSE button.
9
3
22
00
Press PAUSE button.
10
0
01
00
DCR-TRV940/TRV940E/TRV950/TRV950E
6-45
COVER
COVER
1
6
CN1024
1-5.
LCD SYSTEM ADJUSTMENTS
Before perform the LCD system adjustments, check that the data
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
Note 1:
The back light (fluorescent tube) is driven with high volt-
age AC power. Therefore, do not touch the back light
directly, otherwise you will feel an electric shock.
age AC power. Therefore, do not touch the back light
directly, otherwise you will feel an electric shock.
Note 2:
Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
display module by static electricity when replacing it.
Note 3:
Set the LCD B. L. (Menu setting) to the BRT NORMAL.
Set the LCD COLOR (Menu setting) to the center.
Set the LCD COLOR (Menu setting) to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN1024 of the VC-288 board.
Connect the Measuring Instruments via the CPC-jig for LCD (J-
6082-529-A).
The following table shown the Pin No. and signal name of CN1024.
concentrated in CN1024 of the VC-288 board.
Connect the Measuring Instruments via the CPC-jig for LCD (J-
6082-529-A).
The following table shown the Pin No. and signal name of CN1024.
1.
VCO Adjustment (PD-168 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 4 of CN1024 (XHD_OUT) on
VC-288 board
VC-288 board
Measuring Instrument
Frequency counter
Adjustment Page
C
Adjustment Address
61, 62
Specified Value
f = 15734
±
30 Hz (NTSC)
f = 15625
±
30 Hz (PAL)
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
NTSC model: DCR-TRV940/TRV950
PAL model: DCR-TRV940E/TRV950E
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
61
Change the data and set the
frequency (f) to the specified
value.
frequency (f) to the specified
value.
3
C
61
Press PAUSE button.
4
C
61
Read the data and this data is
named D
named D
61
.
5
C
62
D
61
Press PAUSE button.
6
0
01
00
Pin No.
Signal Name
1
PANEL_VG
2
PANEL_COM
3
GND
4
XHD_OUT
5
N.C.
6
N.C.
Fig. 6-1-27
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