Bright Adjustment (Pd-148 Board); Black Limit Adjustment (Pd-148 Board) - Sony Handycam DCR-PC115 Service Manual

DCR-PC115/PC115E/PC120BT/PC120E

2. Bright Adjustment (PD-148 board)

Set the video signal level for driving the LCD to the specified value.
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 D A5
3 D A5
4 0 01
5
A
Pedestal
VTR stop
No signal
Pin 1 of CN2105 (VG)
Oscilloscope
D
A5
A = 7.90 ± 0.05V
Procedure
01 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.
00 Set the data.
Perform "Black Limit Adjustment"
Pedestal
2H
Fig. 5-1-22.

3. Black Limit Adjustment (PD-148 board)

Set the video signal level for driving the LCD to an appropriate
level.
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
9
A
V
5-40
VTR stop
No signal
Pin 6 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-PC115/PC120BT (NTSC)
53: DCR-PC115E/PC120E (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.
Check that the specified value of
"Bright Adjustment" is satisfied. If
not, perform "Bright Adjustment".
Fig. 5-1-23.