Sony Handycam DCR-PC10, Руководство по обслуживанию

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5-25
1-3-5. Backlight Current Consumption Adjustment
(VF-117 Board)
Purpose: Set brightness of the back light (fluorescent
lamp) to a constant level.
Adjustment error:
The EVF screen will become too dark or too
bright.
Mode VTR stop
Signal Absolutely black signal
Measurement Point CN6202 pin
!ª
(EVF VG) on VC-199
board
Measuring Equipment Oscilloscope
Adjustment Page D
Adjustment Address 77
Specification 50.0 ± 1.0 mV
Note 1:
Make 6.0 ± 0.1Vdc at pins
1
and
2
ACV-UNREG of
MULTI connector (CN3701).
Note 2: During performing this adjustment, nothing is connected
between pins
!ª
(EVF VG) of VC-199 board CN6202
and
1
(GND) or
!¡
(GND) of DD-103 board CN3701.
And measure the waveform at pin
!ª
correctly.
Note 3: When the oscilloscope is connected to other equipment,
disconnect them.
Make the metallic portions of oscilloscope not to contact
the other equipment.
Adjustment Procedure:
Order Page Address Data Procedure
1 2 10 03 Set the data.
2 2 11 04 Set the data.
3 0 01 01 Set the data.
4 D 77 Change the data of page: D, address : 77, and set the voltage (A) between the GND level
and low level of EVF VG waveform to the specified value.
5 Press the PAUSE button.
6 2 11 00 Set the data.
7 2 10 00 Set the data.
8 0 01 00 Set the data.
Fig. 5-1-17
VC-199 board
CN6202
CPC
DD-103 board
CN3701
MULTI connector
Pin
!ª
(EVF VG)
Pin
12
(UNREG 6.0
±
0.1Vdc)
Oscilloscope
+ (IN)
– (GND)
Fig. 5-1-18
EVF VG
Oscilloscope
GND LEVEL
ACV-UNREG
(=6.0
±
0.1V)
(A)
2H