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5-26
DCR-TRV140/TRV140E/TRV140M
1-5.
LCD SYSTEM ADJUSTMENTS
Note 1:
The back light (fluorescent tube) is driven by a 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:
Set the LCD BRIGHT (Menu setting) to the center.
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 display are
concentrated in the following connector.
CN5502 of the PD-156 board
Connect the Measuring Instruments via the multi CPC jig (J-6082-
311-A).
The following table shows the Pin No. and signal name of the
connector.
[LCD type check]
By measuring the resistor value between Pin
6
of CN5502 and
Pin
q;
of CN5502, the type of LCD can be discriminated.
PD-156 board CN5502
Resistor
value
1 k
Ω
1.5 k
Ω
LCD type
TYPE S
TYPE C
Pin No.
1
3
5
7
9
Signal Name
VB
VG
VR
C-SYNC/XHD
GND
Pin No.
2
4
6
8
10
Signal Name
XVD OUT
PANEL COM
PANEL_ID
XHD OUT
GND
Fig. 5-1-16
1. VCO Adjustment (PD-156 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode
CAMERA
Subject
Arbitrary
Measurement Point
Pin
8
of CN5502 (XHD OUT)
Measuring Instrument
Frequency counter
Adjustment Page
D
Adjustment Address
A2, A3
Specified Value
f=15734
±
30 Hz (NTSC model)
f=15625
±
30 Hz (PAL model)
Note 1:
NTSC model: DCR-TRV140/TRV140M
PAL model: DCR-TRV140E
Adjusting method
Order Page Address Data
Procedure
1
0
01
01
2
D
A2
Change the data and set the
frequency (f) to the specified
value.
3
D
A2
Press PAUSE button.
4
D
A2
Read the data and this data is
named D
A2
.
5
Convert D
A2
to decimal
notation, and obtain D
A2
’.
(Note 2)
6
Calculate D
A3
’ using
following equations.
(decimal calculation)
D
A3
’ = D
A2
’ + 23 (NTSC
model)
D
A3
’ = D
A2
’ – 20 (PAL model)
7
Convert D
A3
’ to a hexadeci-
mal number, and obtain D
A3
.
(Note 2, 3)
8
D
A3
D
A3
Press PAUSE button.
9
0
01
00
Note 2:
Refer to table 5-4-1. “Hexadecimal-decimal conver-
sion table”
Note 3:
If D
A3
’ > 255, then D
A3
= FF (NTSC model)
If D
A3
’ < 0, then D
A3
= 00 (PAL model)
Multi CPC jig
(J-6082-311-A)
PD-156 board
CN5502
6
pin
0
pin
Volt ohm meter
+
—