
5-61
DSR-25
3-5. LCD SYSTEM ADJUSTMENTS
Note 1:
The back light (fluorescent tube) is driven by high volt-
age AC power supply. Therefore, do not touch the back
light holder to avoid electrical shock.
Note 2:
When replacing the LCD unit, be careful to prevent dam-
ages caused by static electricity.
Note 3:
Adjust the LCD BRIGHT and LCD COLOR to the cen-
ter on menu display.
[Adjusting connector]
Most of the measuring points for adjusting the LCD are concen-
trated in the CN1504 of VD-032 board.
The following table shows the Pin No. and signal name of the
CN1504.
Pin No.
Signal Name
1
N. C.
2
GND
3
PANEL_COM
4
HSY
5
VG
Fig. 5-3-13
1.
VCO Adjustment (PD-170 Board)
Mode
E-E
Signal
Arbitrary
Measurement Point
Pin
4
of CN1504 on VD-032 board
(HSY)
Measuring Instrument
Frequency counter
Adjustment Page
E
Adjustment Address
87 (NTSC)
8C (PAL)
Specified Value
f = 15734
±
30 Hz (NTSC)
f = 15745
±
30 Hz (PAL)
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 60, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 03, and press the PAUSE
button.
4) Select page: E, address: 87 (NTSC) or 8C (PAL), change the
data and adjust the VCO frequency (f) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 3, address: 22, set data: 00, and press the PAUSE
button.
7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
8) Select page: 0, address: 01, and set data: 00.
CN1504
VD-032 board
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Страница 236: ... 316 Sony EMCS Co 9 929 942 11 2003E0500 1 2003 5 Published by DI Customer Center DSR 25 ...