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8. V-COM Adjustment (PD-93 board)
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
Mode
VTR stop
Signal
No signal
Measurement point
Check on LCD display
Measuring instrument
Adjustment page
Adjustment page
E
Adjustment address
D7
Specified value
The brightness difference between the
section
section
A and section B is minimum.
Note1 :
Perform “Bright Adjustment" and “Contrast Adjustment”
before this adjustment.
before this adjustment.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 51, and press the PAUSE
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 51, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 87.
4) Select page: E, address: D7, change the data so that the brightness
4) Select page: E, address: D7, change the data so that the brightness
of the section A and that of the section B is equal.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 3, address: 01, set data: 00, and press the PAUSE
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.
8) Select page: 0, address: 01, and set data: 00.
Fig. 5-1-27.
B
B
B
B
A
A
A
A
9. White Balance Adjustment (PD-93 board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD screen color cannot be reproduced.
Note1:
Check the white balance only when replacing the following
parts. If necessary, adjust them.
parts. If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC4502
2. Light induction plate
3. IC4502
Note2:
NTSC model: CCD-TRV95/TRV95PK/TRV99
PAL model: CCD-TRV89E/TRV95E/TRV99E
PAL model: CCD-TRV89E/TRV95E/TRV99E
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 51, and press the PAUSE
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 51, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 03.
4) Select page: E, address: D1 and D2, and set the data to the initial
4) Select page: E, address: D1 and D2, and set the data to the initial
value.
Note:
To write in the non-volatile memory (EEPROM), press
the PAUSE button of the adjusting remote commander each
time to set the data.
the PAUSE button of the adjusting remote commander each
time to set the data.
Mode
VTR stop
Signal
No signal
Measurement point
Check on LCD display
Measuring instrument
Adjustment page
Adjustment page
E
Adjustment address
D1, D2
Specified value
The LCD screen should not be colored.
5) Check that the LCD screen is not colored. If colored, change the
data of page: E, address: D1 and D2 so that the LCD screen is
not colored.
not colored.
Note:
To write in the non-volatile memory (EEPROM), press
the PAUSE button of the adjusting remote commander each
time to set the data.
the PAUSE button of the adjusting remote commander each
time to set the data.
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.
8) Select page: 0, address: 01, and set data: 00.
Address
Data
NTSC
PAL
D1
8A
94
D2
58
81
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