Contrast Adjustment (Pd-110 Board); V-Com Level Adjustment (Pd-110 Board) - Sony DCR-TRV8 Service Manual

4. Contrast Adjustment (PD-110 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 Camera
Subject Arbitrary
Pin 7 of CN2904 (PD VG) on
Measurement Point
VC-217 board
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 8C
Specified Value A = 2.95 ± 0.05V
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 20, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 02, and press the PAUSE
button of the adjustment remote commander.
4) Select page: D, address: 8C, change the data and set the voltage
(A) between the 0 IRE (pedestal) and 100 IRE to the specified
value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 3, address: 22, set data: 00, and press the PAUSE
button of the adjustment remote commander.
7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
8) Select page: 0, address: 01, and set data: 00.
100 IRE
2H
0 IRE
Fig. 5-1-20.

5. V-COM Level Adjustment (PD-110 board)

Set the common electrode drive signal level of LCD to the specified
value.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note : Perform "Bright Adjustment" and "Contrast Adjustment" before this
adjustment.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 20, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 02, and press the PAUSE
button of the adjustment remote commander.
4) Select page: D, address: 83, change the data and set the PANEL
COM signal level (A) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 3, address: 22, set data: 00, and press the PAUSE
button of the adjustment remote commander.
7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
8) Select page: 0, address: 01, and set data: 00.
A
5-33
Camera
Arbitrary
Pin !¡ of CN2904 (PANEL COM) on
VC-217 board
Oscilloscope
D
83
A = 6.50 ± 0.05V
2H
Fig. 5-1-21.
A