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5-24
CCD-TRV107E/TRV108E/TRV208E/TRV408E
1-5.
LCD SYSTEM ADJUSTMENT
Note 1:
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.
Note 2:
When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
caused by static electricity.
Note 3:
Set the LCD BRIGHT (Menu display) to the center.
Set the LCD COLOR (Menu display) to the center.
Set the LCD COLOR (Menu display) to the center.
Note 4:
Connect the adjustment remote commander to CN713 of VC-272
board via CPC jig for SB (J-6082-539-A). To operate the
adjustment remote commander, connect the AC power adapter
(8.4Vdc) to the DC IN jack of CPC jig for SB, or connect the L
series Info-LITHIUM battery to the battery terminal of CPC jig
for SB.
board via CPC jig for SB (J-6082-539-A). To operate the
adjustment remote commander, connect the AC power adapter
(8.4Vdc) to the DC IN jack of CPC jig for SB, or connect the L
series Info-LITHIUM battery to the battery terminal of CPC jig
for SB.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in 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 CN5502.
concentrated in 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 CN5502.
Table 5-1-8.
1. VCO Adjustment (PD-156 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 8 of CN5502 (XHD OUT)
Measuring Instrument
Frequency counter
Adjustment Page
7
Adjustment Address
43, 44
Specified Value
f = 15625 ± 30Hz
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
7
43
Change the data and set the VCO
frequency (f) to the specified
value.
frequency (f) to the specified
value.
3
7
43
Press PAUSE button.
4
7
43
Read the data, and this data is
named D
named D
43
.
5
Convert D
43
to decimal notation,
and obtain D
43
’. (Note)
6
Calculate D
44
’ using following
equations (Decimal calculation)
When D
43
’ 20
D
44
’ = D
43
’ – 20
When D
43
’ < 20
D
44
’ = 00
7
Convert D
44
’ to a hexadecimal
number, and obtain D
44
. (Note)
8
7
44
D
44
Set the data, and press PAUSE
button.
button.
9
0
01
00
Set the data.
Note:
Refer to “Table 5-4-1. Hexadecimal-decimal Conversion Table”.
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
PD-156 board
10
9
1
2
CN5502
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