Sony DCR-TRV940 / DCR-TRV940E / DCR-TRV950 / DCR-TRV950E (serv.man4) Service Manual ▷ View online
DCR-TRV940/TRV940E/TRV950/TRV950E
6-46
2.
RGB AMP Adjustment (PD-168 board)
Set the D Range 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
CAMERA
Subject
Not required
Measurement Point
Pin 1 of CN1024 (PANEL_VG) on
VC-288 board
External trigger: Pin 2 of CN1024
VC-288 board
External trigger: Pin 2 of CN1024
(PANEL_COM) on
VC-288 board
VC-288 board
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
64
Specified Value
A = 3.50
±
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
64
Change the data and set the
voltage (A) to the specified
value. (The data should be
“00” to “3F”)
voltage (A) to the specified
value. (The data should be
“00” to “3F”)
3
C
64
Press PAUSE button.
4
0
01
00
A: Between the reversed waveform pedestal and
non-reversed waveform pedestal
Fig. 6-1-28
A
2H
Pedestal
Pedestal
3.
Contrast Adjustment (PD-168 board)
Set the video signal level for driving the LCD to the specified
value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 1 of CN1024 (PANEL_VG) on
VC-288 board
External trigger: Pin 2 of CN1024
VC-288 board
External trigger: Pin 2 of CN1024
(PANEL_COM) on
VC-288 board
VC-288 board
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
69
Specified Value
A = 3.45
±
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
69
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
69
Press PAUSE button.
4
0
01
00
A: Between the pedestal (0 IRE) and 100 IRE
Fig. 6-1-29
A
2H
100 IRE
Pedestal
DCR-TRV940/TRV940E/TRV950/TRV950E
6-47
4.
V-COM Level Adjustment (PD-168 board)
Set the common electrode drive signal level of LCD to the speci-
fied value.
fied value.
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 2 of CN1024 (PANEL_COM)
on VC-288 board
on VC-288 board
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
66
Specified Value
A = 5.40
±
0.05 Vp-p
Note 1:
Perform “RGB AMP Adjustment” and “Contrast Adjust-
ment” before this adjustment.
ment” before this adjustment.
Note 2:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
66
Change the data and set the
voltage (A) to the specified
value.
voltage (A) to the specified
value.
3
C
66
Press PAUSE button.
4
0
01
00
A: PANEL COM signal level
Fig. 6-1-30
A
2H
5.
V-COM Adjustment (PD-168 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
CAMERA
Subject
Not required
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
C
Adjustment Address
63
Specified Value
The brightness difference between
the section-A and section-B is
minimum
the section-A and section-B is
minimum
Note 1:
Perform “RGB AMP Adjustment”, “Contrast Adjust-
ment” and “V-COM Level Adjustment” before this ad-
justment.
ment” and “V-COM Level Adjustment” before this ad-
justment.
Note 2:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
63
Change the data so that
brightness of the section A
and section B is equal.
brightness of the section A
and section B is equal.
3
C
63
Subtract 8 from the data.
4
C
63
Press PAUSE button.
5
0
01
00
A
A
A
A
B
B
B
B
Fig. 6-1-31
DCR-TRV940/TRV940E/TRV950/TRV950E
6-48
6.
White Balance Adjustment (PD-168 board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD screen color cannot be reproduced.
Mode
CAMERA
Subject
Not required
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
C
Adjustment Address
67, 68
Specified Value
LCD 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. IC5701
2. Light induction plate
3. IC5701
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
67
7F
Press PAUSE button.
3
C
68
87
Press PAUSE button.
4
Check that the LCD 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
LCD screen is not colored.
(Note 3)
LCD 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.
67
68
DCR-TRV940/TRV940E/TRV950/TRV950E
6-49
COVER
COVER
6-2. MECHANISM SECTION ADJUSTMENTS
On the mechanism section adjustment
For details of mechanism section adjustments, checks, and replace-
ment of mechanism parts, refer to the separate volume “DV ME-
CHANICAL ADJUSTMENT MANUAL VI J Mechanism ”.
ment of mechanism parts, refer to the separate volume “DV ME-
CHANICAL ADJUSTMENT MANUAL VI J Mechanism ”.
2-1.
HOW TO ENTER RECORD MODE WITHOUT
CASSETTE
CASSETTE
1) Connect the adjustment remote commander to the LANC jack.
2) Turn the HOLD switch of the adjustment remote commander
2) Turn the HOLD switch of the adjustment remote commander
to the ON position.
3) Close the cassette compartment without the cassette.
4) Select page: 3, address: 01, set data: 0C, and press the PAUSE
4) Select page: 3, address: 01, set data: 0C, and press the PAUSE
button of the adjustment remote commander.
(The mechanism enters the record mode automatically.)
(The mechanism enters the record mode automatically.)
Note:
The function buttons become inoperable.
5) To quit the record mode, select page: 3, address: 01, set data:
00, and press the PAUSE button of the adjustment remote com-
mander. (Whenever you want to quit the record mode, be sure
to quit following this procedure.)
mander. (Whenever you want to quit the record mode, be sure
to quit following this procedure.)
2-2.
HOW TO ENTER PLAYBACK MODE WITHOUT
CASSETTE
CASSETTE
1) Connect the adjustment remote commander to the LANC jack.
2) Turn the HOLD switch of the adjustment remote commander
2) Turn the HOLD switch of the adjustment remote commander
to the ON position.
3) Close the cassette compartment without the cassette.
4) Select page: 3, address: 01, set data: 0B, and press the PAUSE
4) Select page: 3, address: 01, set data: 0B, and press the PAUSE
button of the adjustment remote commander.
(The mechanism enters the playback mode automatically.)
(The mechanism enters the playback mode automatically.)
Note:
The function buttons become inoperable.
5) To quit the playback mode, select page: 3, address: 01, set
data: 00, and press the PAUSE button of the adjustment re-
mote commander. (Whenever you want to quit the playback
mode, be sure to quit following this procedure.)
mote commander. (Whenever you want to quit the playback
mode, be sure to quit following this procedure.)
2-3.
TAPE PATH ADJUSTMENT
1.
Preparation for Adjustment
1) Clean the tape running side (tape guide, drum, capstan shaft,
pinch roller, etc.).
2) Connect the adjustment remote commander to the LANC jack.
3) Turn the HOLD switch of the adjustment remote commander
3) Turn the HOLD switch of the adjustment remote commander
to the ON position.
4) Connect an oscilloscope to VC-288 board CN1008 via the
CPC-8 jig (J-6082-388-A).
Channel 1: VC-288 board, CN1008 Pin w; (Note)
External trigger: VC-288 board, CN1008 Pin qj
External trigger: VC-288 board, CN1008 Pin qj
Note:
Connect a 75
Ω
resistor between pins w; of CN1008
and ql (GND).
75
75
Ω
resistor (Parts code: 1-247-804-11)
5) Playback the alignment tape for tracking. (XH2-1)
6) Select page: 3, address: 33, and set data: 08.
7) Select page: 3, address: 26, and set data: 31.
8) Check that the oscilloscope RF waveform is normal at the en-
6) Select page: 3, address: 33, and set data: 08.
7) Select page: 3, address: 26, and set data: 31.
8) Check that the oscilloscope RF waveform is normal at the en-
trance and exit.
If not normal, adjust according to the separate volume
“DV MECHANICAL ADJUSTMENT MANUAL VI
J Mechanism ” .
If not normal, adjust according to the separate volume
“DV MECHANICAL ADJUSTMENT MANUAL VI
J Mechanism ” .
CN1008 of VC-288 board
2.
Procedure after operations
1) Connect the adjustment remote commander to the LANC jack
and set the HOLD switch to the ON position.
2) Select page: 3, address: 26, and set data: 00.
3) Select page: 3, address: 33, and set data: 00.
3) Select page: 3, address: 33, and set data: 00.
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. 6-2-1
CH1
Entrance side
Exit side
Check this section
(Normal waveform)
CH2
(Trigger)
3.3 msec
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