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3-5. VIDEO ADJUSTMENTS
5. Comb Filter Adjustment (B-1 19 board)
Page. 7-54
Mode
Record
Signal
Color bar (Video input)
Pin @ of IC201 (Y COMB OUT)
Measurement Point
Measuring Instrument Oscilloscope
Adjusting Element
D
Adjustment Page
Adjustment Address
71 (COMB ADJ)
Residual chroma component (A) is
Specified Value
minimum.
Adjusting method:
Set to the VIDEO input mode.
Set to the record mode.
Release the protect.
3)
Page: 1, address: 00, data: 01
Set data: 00 to page: 2, address: 00.
4)
(Specification of category 00)
Set data: 04 to page: 2, address: BO.
After memorizing the data of address: 9A of page: 2, set
data: 10 to the address. (TEST A mode setting)
Change the data of page: D, address: 71, and adjust the
7)
residual chroma component (A) to minimum.
Adjust RV202 so that the residual chroma component
8)
Repeat 7) and 8).
9)
Press the PAUSE button of the adjusting remote command-
10)
er.
Processing after completing adjustments
1)
Set the data memorized at step 6) to address: 9A of page: 2.
2)
Set data: 00 to page: 2, address: BO.
(Release of TEST A, B mode)
Residual
Before
adjustments
After
adjustments
Fig. 7-3-l 1.
chroma component
l - 9
ADD
3-8: LCD SYSTEM ADJUSTMENTS
This adjustments does not have in the CCD-FX430 series, but it
is newly added in the CCD-FX730V.
Note 1: The backlight (fluorescent tube) is driven by a 700
Vp-p, 70 kHz AC power supply.
Therefore, be careful not to touch the backlight holder
as you will receive an electric shock.
Note 2: When replacing the LCD unit, ensure there will be no
damages by static electricity.
[Adjusting connector]
Most measuring points for adjusting the LCD system are
concentrated at CNoO2 of the PD-53 board. Connect the
measuring equipments via the measuring pin tool. The following
table lists the pin numbers and signal names of CNO02.
Pin No.
Signal Name
1
3
VG
VR
7
SYNC
Table 7-3-31.
Measuring pin tool for LCD
LCD CPC conversion board
[Positions of RVs during adjustments]
Unless specified otherwise, set RV to the following positions and adjust.
[Menu Setting]
COLOR and HUE as follows on the menu screen.
Set
HUE . . . . . . . . . . . . . . . . . . . . . . . . . . ,Center
[Power supply voltage]
Adjust the power supply voltage for the battery terminal so that
Pin @ of the CNOOl of the PD-53 board (LCD UNREG) become
6.5 + 0.1 Vdc.
[Video Input Signal for Adjusting]
If the signal column specifies "Color bar signal whose chroma
signal and burst signal are turned off", input a color bar signal
whose chroma signal and burst signal have been turned off to the
video terminal as the video input signal for adjusting. Check that
the signal level of Pin @ of CNOOl of the PD-53 board is approx.
1.0 Vp-p before adjusting.
Approx. 0.714V
Approx.
Horizontal sync signal
Fig. 7-3-32.
Color bar signal
burst signals are turned off
Pin No.
Signal Name
2
- O V
4
6
S P D
6
HSY
10
G N D
Parts Code: J-6082-192-A
Parts Code: J-6082-290-A
White (100%)
1 .OV
There should be
no burst signal.
whose chroma signal and
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