Bright Adjustment (Pd-134 Board); Black Limit Adjustment (Pd-134 Board) - Sony DCR-PC110 Service Manual

2. Bright Adjustment (PD-134 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 1 of CN2105 (VG)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address A5
Specified Value A = 7.8 ± 0.05V
Adjusting method:
Order Page Address Data
1 0 01 01
2 D A5
3 D A5
4 0 01 00
A
Pedestal
Fig. 5-1-17.
Procedure
Set the data.
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
Press PAUSE button.
Set the data.
Pedestal
2H

3. Black Limit Adjustment (PD-134 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:
Order Page Address Data
1 0 01
2 2 0E
3 2 0F
4 D A6
5 D A6
6 2 0E
7 2 0F
8 0 01
A
V
5-32
VTR stop
No signal
Pin 4 of CN2105 (PSIG)
Oscilloscope
D
A6
A = 8.50 ± 0.05V
Procedure
01 Set the data.
61 Set the data.
Set the following data.
5B: DCR-PC110 (NTSC)
53: DCR-PC110E (PAL)
Change the data and set the
PSIG signal amplitude (A) to the
specified value.
(The data should be "00" to
"0F".)
Press PAUSE button.
00 Set the data.
00 Set the data.
00 Set the data.
Fig. 5-1-18.