Lcd System Adjustments; Vco Adjustment (Pd-168 Board) - Sony DCR-TRV940 Adjustment Manual

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COVER
COVER
1-5.

LCD SYSTEM ADJUSTMENTS

Before perform the LCD system adjustments, check that the data
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
Note 1: The back light (fluorescent tube) is driven with high volt-
age AC power. Therefore, do not touch the back light
directly, otherwise you will feel an electric shock.
Note 2: Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
Note 3: Set the LCD B. L. (Menu setting) to the BRT NORMAL.
Set the LCD COLOR (Menu setting) to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN1024 of the VC-288 board.
Connect the Measuring Instruments via the CPC-jig for LCD (J-
6082-529-A).
The following table shown the Pin No. and signal name of CN1024.
Pin No.
Signal Name
1
PANEL_VG
2
PANEL_COM
3
GND
4
XHD_OUT
5
N.C.
6
N.C.
1
CN1024
6
Fig. 6-1-27
DCR-TRV940/TRV940E/TRV950/TRV950E

1. VCO Adjustment (PD-168 board)

Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode
CAMERA
Subject
Not required
Measurement Point
Pin 4 of CN1024 (XHD_OUT) on
VC-288 board
Measuring Instrument
Frequency counter
Adjustment Page
C
Adjustment Address
61, 62
f = 15734 ± 30 Hz (NTSC)
Specified Value
f = 15625 ± 30 Hz (PAL)
Note 1: Check that the data of page: 0, address: 10 is “00”.
Note 2: NTSC model: DCR-TRV940/TRV950
PAL model: DCR-TRV940E/TRV950E
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Change the data and set the
2
C
61
frequency (f) to the specified
value.
3
C
61
Press PAUSE button.
Read the data and this data is
4
C
61
named D
.
61
5
C
62
D
Press PAUSE button.
61
6
0
01
00
6-45

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