Sony CCD TRV16 Service Manual - Page 112

Bright Adjustment PD-107 board, Contrast Adjustment PD-107 board

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4. Bright Adjustment (PD-107 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 Signal Measurement point Measuring instrument Adjustment page Adjustment address Specified value VTR stop No signal Pin 3 of CN5501 (VG) of PD-107 board External trigger : Pin 4 of CN5501 (PANEL COM) Oscilloscope E CF A = 1.94 ± 0.05V Adjusting method: 1) Select page: 0, address: 01, and set data: 01. 2) Select page: 3, address: 01, set data: 55, and press the PAUSE button of the adjusting remote commander. 3) Select page: 2, address: 7D, and set data: 40. 4) Select page: E, address: CF, change the data and set the voltage (A) between the pedestal and white to the specified value. (The data of address: CF should be "41" to "BF".) 5) Press the PAUSE button of the adjusting remote commander. 6) Select page: 3, address: 01, set data: 00, and press the PAUSE button of the adjusting remote commander. 7) Select page: 2, address: 7D, and set data: 00. 8) Select page: 0, address: 01, and set data: 00. White Pedestal 5. Contrast Adjustment (PD-107 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 Signal Measurement point Measuring instrument Adjustment page Adjustment address Specified value VTR stop No signal Pin 3 of CN5501 (VG) of PD-107 board External trigger : Pin 4 of CN5501 (PANEL COM) Oscilloscope E D3 A = 3.52 ± 0.07V Adjusting method: 1) Select page: 0, address: 01, and set data: 01. 2) Select page: 3, address: 01, set data: 55, and press the PAUSE button of the adjusting remote commander. 3) Select page: 2, address: 7D, and set data: 00. 4) Select page: E, address: D3, change the data and set the voltage (A) between the pedestal (0 IRE) and 100 IRE to the specified value. 5) Press the PAUSE button of the adjusting remote commander. 6) Select page: 3, address: 01, set data: 00, and press the PAUSE button of the adjusting remote commander. 7) Select page: 0, address: 01, and set data: 00. 100 IRE 0 IRE A A 2H Fig. 5-1-24. 2H Fig. 5-1-25.

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4. Bright Adjustment (PD-107 board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value. If deviated, the screen image will be blackish or satu-
rated (whitish).
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3)
Select page: 2, address: 7D, and set data: 40.
4)
Select page: E, address: CF, change the data and set the voltage
(A) between the pedestal and white to the specified value. (The
data of address: CF should be “41” to “BF”.)
5)
Press the PAUSE button of the adjusting remote commander.
6)
Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7)
Select page: 2, address: 7D, and set data: 00.
8)
Select page: 0, address: 01, and set data: 00.
Mode
VTR stop
Signal
No signal
Measurement point
Pin
3
of CN5501 (VG) of PD-107
board
External trigger : Pin
4
of CN5501
(PANEL COM)
Measuring instrument
Oscilloscope
Adjustment page
E
Adjustment address
CF
Specified value
A = 1.94 ± 0.05V
Fig. 5-1-24.
5. Contrast Adjustment (PD-107 board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value. If deviated, the screen image will be blackish or satu-
rated (whitish).
Mode
VTR stop
Signal
No signal
Measurement point
Pin
3
of CN5501 (VG) of PD-107
board
External trigger : Pin
4
of CN5501
(PANEL COM)
Measuring instrument
Oscilloscope
Adjustment page
E
Adjustment address
D3
Specified value
A = 3.52 ± 0.07V
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3)
Select page: 2, address: 7D, and set data: 00.
4)
Select page: E, address: D3, change the data and set the voltage
(A) between the pedestal (0 IRE) and 100 IRE to the specified
value.
5)
Press the PAUSE button of the adjusting remote commander.
6)
Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7)
Select page: 0, address: 01, and set data: 00.
Fig. 5-1-25.
A
2H
White
Pedestal
100 IRE
0 IRE
A
2H