Read Sony DCR-HC14E / DCR-HC15 / DCR-HC15E (serv.man4) Service Manual online
6-31
DCR-HC14E/HC15/HC15E
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.
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.
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.
address: 10 is “00”. If not, set data: 00 to this address.
Note4:
NTSC model : DCR-HC15
PAL model
PAL model
: DCR-HC14E/HC15E
Switch setting
LCD panel ...................................................................... Open
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN1004 of the VC-311 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.
concentrated in CN1004 of the VC-311 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.
Table 6-1-11.
1. VCO Adjustment (PD-188 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 7 of CN1004 of VC-311 board
(H START)
(H START)
Measuring Instrument
Frequency counter
Adjustment Page
C
Adjustment Address
47, 48
Specified Value
f = 15734 ± 30Hz (NTSC)
f = 15625 ± 30Hz (PAL)
f = 15625 ± 30Hz (PAL)
Note1:
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.
frequency (f) to the specified
value.
3
C
47
Press PAUSE button.
4
C
47
Read the data, and this data is
named D
named D
47
.
5
Convert D
47
to decimal notation,
and obtain D
47
’. (Note2)
6
Calculate D
48
’ using following
equations (Decimal calculation)
[NTSC model]
When D
[NTSC model]
When D
47
’ 229
D
48
’ = D
47
’ + 26
When D
47
’ > 229
D
48
’ = 255
[PAL model]
When D
When D
47
’ 26
D
48
’ = D
47
’ – 26
When D
47
’ < 26
D
48
’ = 0
7
Convert D
48
’ to a hexadecimal
number, and obtain D
48
. (Note2)
8
C
48
D
48
Set the data, and press PAUSE
button.
button.
9
0
01
00
Set the data.
Note2:
Refer to “Table 6-4-1. Hexadecimal-decimal Conversion Table”.
Pin No.
1
2
3
4
5
6
7
8
Signal Name
FRRV
RF MON
RF IN/LANC
JACK IN
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
LANC SIG
N.C.
Fig. 6-1-18.
CN1004
Remove the CPC lid
16
1
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