Bright Adjustment (Pd-124 Board); Black Limit Adjustment (Pd-124 Board) - Sony DCR-TRV6 Service Manual

2. Bright Adjustment (PD-124 board)

Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode VTR stop
Signal No signal
Measurement Point Pin 7 of CN009 (PANEL VG) of
VC-240/241 board
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address A5
Specified Value A = 7.6 ± 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: 08, and press the PAUSE
button.
4) Select page: D, address: A5, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
5) Press the PAUSE button.
6) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
7) Select page: 3, address: 22, set data: 00, and press the PAUSE
button.
8) Select page: 0, address: 01, and set data: 00.
A
Pedestal
Fig. 5-1-22.
Pedestal
2H

3. Black Limit Adjustment (PD-124 board)

Set the dynamic range of the LCD driver to an appropriate level. If
deviated, the LCD screen will become blackish or saturated
(whitish).
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 0E, and set data: 61.
3) Select page: 2, address: 0F, and set data: 5B (*1) or 53 (*2).
*1: DCR-TRV6
*2: DCR-TRV6E/TRV20E
4) Select page: D, address: A6, change the data and set the PSIG
signal amplitude (A) to the specified value.
(The data of address: A6 should be "00" to "0F".)
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 2, address: 0E, and set data: 00.
7) Select page: 2, address: 0F, and set data: 00.
8) Select page: 0, address: 01, and set data: 00.
A
V
5-40
VTR stop
No signal
Pin 0 of CN009 (PSIG) of
VC-240/241 board
Oscilloscope
D
A6
A = 8.00 ± 0.05V
Fig. 5-1-23.