5-35
4. Bright Adjustment (CB-61 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
VTR stop
Signal
10-step stair-step signal or color bar
signal whose chroma and burst signals
are turned off
Measurement Point
Pin
2
of CN9925 (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
6C
Specified Value
A = 4.00 ± 0.05V (NTSC)
A = 4.15 ± 0.05V (PAL)
Note:
Perform “4. Bright Adjustment” and “5. Contrast Adjustment”
alternately until each specified value is satisfied.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: D, address: 6C, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
(The data of address: 6C should be “41” to “BF”.)
3)
Press the PAUSE button of the adjustment remote commander.
4)
Select page: 0, address: 01, and set data: 00.
5)
Perform “Contrast Adjustment”.
Fig. 5-3-27.
5. Contrast Adjustment (CB-61 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
VTR stop
Signal
10-step stair-step signal or color bar
signal whose chroma and burst signals
are turned off
Measurement Point
Pin
2
of CN9925 (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
63
Specified Value
A = 2.90 ± 0.05V (NTSC)
A = 3.22 ± 0.05V (PAL)
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: D, address: 63, change the data and set the voltage
(A) between the 0 IRE (pedestal) and 90 IRE to the specified
value.
3)
Press the PAUSE button of the adjustment remote commander.
4)
Select page: 0, address: 01, and set data: 00.
5)
Check that the specified value of “Bright Adjustment” is
satisfied, if not perform “Bright Adjustment”.
Fig. 5-3-28.
Pedestal
Pedestal
A
2H
90 IRE
0 IRE
A
2H
Содержание GV-D300 Operating Instructions (primary manual)
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Страница 30: ...2 3 2 4 CB 61 RJ 77 BOARDS 2 5 CONTROL SWITCH BLOCK FK 71 ...
Страница 33: ...2 6E 2 12 CIRCUIT BOARDS LOCATION ...
Страница 45: ...GV D300 D300E D900 D900E 4 29 4 30 4 31 AUDIO 1 CB 61 6 10 Refer to page 4 7 for CB 61 printed wiring board ...
Страница 46: ...GV D300 D300E D900 D900E 4 33 4 34 AUDIO 2 CB 61 7 10 4 32 Refer to page 4 7 for CB 61 printed wiring board ...
Страница 59: ...GV D300 D300E D900 D900E 4 81 4 82 MODE CONTROL RJ 77 9 9 See page 4 48 for RJ 77 BOARD printed wiring board ...
Страница 61: ...GV D300 D300E D900 D900E 4 85 4 86 4 87 AV IN OUT IO 62 4 88 ...
Страница 62: ...GV D300 D300E D900 D900E 4 89 4 90 4 91 4 92 MULTI CONNECTOR EX 34 ...
Страница 64: ...GV D300 D300E D900 D900E 4 96E CUSTOMER CONTROL CONTROL SW BLOCK FK 71 4 95 ...
Страница 142: ...3 BLOCK DIAGRAMS PAGE 3 3 3 1 OVERALL BLOCK DIAGRAM 1 2 PAGE 3 8 3 3 POWER BLOCK DIAGRAM ...
Страница 144: ...GV D300 D300E D900 D900E PAGE 4 89 SCHEMATIC DIAGRAM 5 6 MULTI CONNECTOR BACK LIGHT POWER EX 34 ...