5-40
DCR-TRV40/TRV40E/TRV50/TRV50E
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-TRV40/TRV50
PAL model: DCR-TRV40E/TRV50E
Switch setting:
LCD BRIGHT(Menu setting) ............................................. Center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN1012 of the VC-283 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 CN1012.
Table. 5-1-10.
Pin No.
1
2
3
4
5
6
7
8
Signal Name
N. C.
RF MON
RF IN/LANC JACK IN
SWP
PANEL COM
GND
H START
GND
Pin No.
9
10
11
12
13
14
15
16
Signal Name
PANEL VG
GND
EVF VCO
GND
EVF VG
EXT DA
LANC SIG
N. C.
1. VCO Adjustment (PD-165 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 CN1012 of VC-283 board
(H START)
Measuring Instrument
Frequency counter
Adjustment Page
C
Adjustment Address
61, 62
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
61
Change the data and set the
VCO frequency (f) to the
specified value.
3
C
61
Press PAUSE button.
4
C
61
Read the data, and this data is
named D
61
.
5
C
62
D
61
Set the data, and press PAUSE
button.
6
0
01
00
Set the data.
Remove the CPC lid.
CN1012
16
1
Fig. 5-1-19.
