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Model
DCR-DVD100 DCR-DVD100E (serv.man4)
Pages
52
Size
933.62 KB
Type
PDF
Document
Service Manual
Brand
Device
Movie / SECTION 6 ADJUSTMENTS
File
dcr-dvd100-dcr-dvd100e-sm4.pdf
Date
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6-31
DCR-DVD100/DVD100E
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-DVD100
PAL model: DCR-DVD100E
Switch setting:
LCD panel ............................................................................. Open
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN1003 of the VC-307 board. Connect the
measuring instruments via the multi CPC-8 jig (J-6082-388-A). The
following table shows the Pin No. and signal name of CN1003.
Table 6-1-11.
1. VCO Adjustment (PD-188 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Pin 4 of CN1003 of VC-307 board
(H START)
Measuring Instrument
Frequency counter
Adjustment Page
B
Adjustment Address
61, 62
Specified Value
f = 15734 
±
 30Hz (NTSC)
f = 15625 
±
 30Hz (PAL)
Note1:
The data of page: 0, address: 10 must be “00”.
Note2:
Refer to “Table 6-3-1. Hexadecimal-decimal Conversion Table”.
Adjusting method for NTSC model:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
B
61
Change the data and set the VCO
frequency (f) to the specified
value.
3
B
61
Press PAUSE button.
4
B
61
Read the data, and this data is
named D
61
.
5
Convert D
61
 to decimal notation,
and obtain D
61
’. (Note2)
6
Calculate D
62
’ using following
equations (Decimal calculation)
When D
61
’   229
D
62
’ = D
61
’ + 26
When D
61
’ > 229
D
62
’ = 255
7
Convert D
62
’ to a hexadecimal
number, and obtain D
62
. (Note2)
8
B
62
D
62
Set the data, and press PAUSE
button.
9
0
01
00
Set the data.
Adjusting method for PAL model:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
B
62
Change the data and set the VCO
frequency (f) to the specified
value.
3
B
62
Press PAUSE button.
4
B
62
Read the data, and this data is
named D
62
.
5
Convert D
62
 to decimal notation,
and obtain D
62
’. (Note2)
6
Calculate D
61
’ using following
equations (Decimal calculation)
When D
62
’   26
D
61
’ = D
62
’ – 26
When D
62
’ < 26
D
61
’ = 0
7
Convert D
61
’ to a hexadecimal
number, and obtain D
61
. (Note2)
8
B
61
D
61
Set the data, and press PAUSE
button.
9
0
01
00
Set the data.
COVER
COVER
20
2
19
1
Remove the CPC lid (bottom).
Fig. 6-1-17.
Pin No.
1
3
5
7
9
11
13
15
17
19
Signal Name
GND
PANEL VG
XHD/PSIG
EVF VCO
D 3.1V
MS XIN
MS BS
MS SCLK
C PIO5
S TXD
Pin No.
2
4
6
8
10
12
14
16
18
20
Signal Name
GND
H START
EVF VG
EVF BL
LANC SIG
MS DIO
MS VCC ON
ACCESS LED
C PIO4
S RXD
6-32
DCR-DVD100/DVD100E
2. Bright 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).
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Pin 3 of CN1003 of VC-307 board
(PANEL VG)
Measuring Instrument
Oscilloscope
Adjustment Page
B
Adjustment Address
64
Specified Value
A = 7.58 
±
 0.05V (NTSC)
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
B
64
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to the
specified value.
3
B
64
Press PAUSE button.
4
0
01
00
Set the data.
3. Black Limit Adjustment (PD-188 board)
Set the video signal level for driving the LCD driver to an appropriate
level.
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Pin 5 of CN1003 of VC-307 board
(PSIG)
Measuring Instrument
Oscilloscope
Adjustment Page
B
Adjustment Address
65
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
1
0
01
01
Set the data.
2
B
65
Change the data and set the PSIG
signal amplitude (A) to the
specified value. (The data should
be “00” to “0F”)
3
B
65
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 6-1-19.
Fig. 6-1-18.
Pedestal
Pedestal
A
2H
A
V
6-33
DCR-DVD100/DVD100E
4. PSIG GLAY Adjustment (PD-188 board)
Set the PSIG signal level to an appropriate level.
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Pin 5 of CN1003 of VC-307 board
(PSIG)
Measuring Instrument
Oscilloscope
Adjustment Page
B
Adjustment Address
66
Specified Value
A = 5.00 
±
 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
B
66
Change the data and set the PSIG
signal level (A) to the specified
value. (The data should be “00”
to “7F”.)
3
B
66
Press PAUSE button.
4
0
01
00
Set the data.
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).
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Pin 3 of CN1003 of VC-307 board
(PANEL VG)
Measuring Instrument
Oscilloscope
Adjustment Page
B
Adjustment Address
69
Specified Value
A = 2.60 
±
 0.05V (NTSC)
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
B
69
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
B
69
Press PAUSE button.
4
0
01
00
Set the data.
5
Check that the specified value of
“Bright Adjustment” is satisfied. If
not, perform “Bright Adjustment”.
Fig. 6-1-21.
Fig. 6-1-20.
A
2H
100 IRE
Pedestal
A
2H
6-34
DCR-DVD100/DVD100E
6. Center Level Adjustment (PD-188 board)
Set the video signal center level of LCD panel to an appropriate
level.
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Pin 3 of CN1003 of VC-307 board
(PANEL VG)
Measuring Instrument
Digital voltmeter
Adjustment Page
B
Adjustment Address
6A
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
B
6A
Change the data and set the DC
voltage (A) to the specified value.
(The data should be “00” to “7F”.)
3
B
6A
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.
Mode
MOVIE ( 
 )
Subject
Arbitrary
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
B
Adjustment Address
63
Specified Value
The brightness difference between the
section A and section B is minimum.
Note1:
This adjustment should be carried out upon completion of the
following adjustments.
Bright 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
B
63
Change the data so that the
brightness of the section A and
that of the section B is equal.
(Note3)
3
B
63
Subtract 2 from the data. (Note3)
4
B
63
Press PAUSE button.
5
0
01
00
Set the data.
Note3:
The data should be “80” to “BF”.
Fig. 6-1-22.
A
A
A
A
B
B
B
B
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