Sony Handycam DCR-PC10, Service Manual

Page: 106 / 181

5-29
1-4-4. BRIGHT Adjustment (PD-97 Board)
Purpose: Adjust brightness of LCD screen (appearance)
Adjustment error: The LCD picture will be close to saturated
picture (white washing) or black compression.
Mode VTR stop
Signal Absolutely black signal
Measurement Point CN3701 pin
@™
(CL VG) on DD-103
board (Note)
Measuring Equipment Oscilloscope
Adjustment Page D
Adjustment Address C1
Specification A=7.50 ± 0.05 Vp-p
Note 1 : Pull-up CL-VG te15V with 10k
Ω
resistor as
shown in preparation Fig. 5-1-19 (See page 5-27).
Adjustment Procedure:
Note 2:
Check that the specified value of “CONTRAST
Adjustment” is satisfied, if not, perform “CONTRAST
Adjustment”.
1-4-5. CONTRAST Adjustment (PD-97 Board)
Purpose: Adjust contrast of the LCD screen.
Adjustment error:
The LCD picture becomes dull (white washing)
or close to saturated image.
Mode VTR stop
Signal 50% white signal
Measurement Point CN3701 pin
@™
(CL VG) on DD-103
board (Note)
Measuring Equipment Oscilloscope
Adjustment Page D
Adjustment Address C4
Specification A=2.20 ± 0.05Vp-p
Note 1:
Pull-up CL-VG te15V with 10k
Ω
resistor as
shown in preparation Fig. 5-1-20 (See page 5-28).
Adjustment Procedure:
Note 2: Check that the specified value of “BRIGHT Adjustment”
is satisfied, if not, perform “BRIGHT Adjustment”.
Order Page Address Data Procedure
1 0 01 01 Set the data. (Preparation)
2 2 10 03 Set the data.
3 D C1 Change the data until the voltage difference (A) between the inverted waveform's pedestal
and the non-inverted waveform's pedestal satisfies the specification.
4 Press the PAUSE button.
5 2 10 00 Set the data.
6 0 01 00 Set the data. (End)
Order Page Address Data Procedure
1 0 01 01 Set the data. (Preparation)
2 2 10 01 Set the data.
3 D C4 Change the data until the voltage difference (A) between the 50% all white signal and the
pedestal satisfies the specification.
4 Press the PAUSE button.
5 2 10 00 Set the data.
6 0 01 00 Set the data. (End)
A
2H
Pedestal level
Pedestal level
Fig. 5-1-21
Fig. 5-1-22
2H
A
White 50% level
Pedestal level
Related adjustment items:
“CONTRAST Adjustment”
Related adjustment items:
“BRIGHT Adjustment”