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Camera System Adjustments; Mhz Origin Oscillation Adjustment; (vc-242 Board); Zoom Key Center Adjustment - Sony DCR-VX2000 Service Manual

Digital video camera recorder.
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1-3.

CAMERA SYSTEM ADJUSTMENTS

Before perform the camera system adjustments, check that the
specified values of "VIDEO SYSTEM ADJUSTMENT" are
satisfied.

1. 27MHz Origin Oscillation Adjustment

(VC-242 board)

Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
Subject
Not required
Measurement Point
Pin rj of IC771 or pin qf of IC706
Measuring Instrument
Frequency counter
Adjustment Page
F
Adjustment Address
1C
Specified Value
f=13500000 ± 68Hz
Adjusting method:
Order Page Address Data
1
0
01
01
2
F
1C
3
F
1C
4
0
01
00
Fig. 5-1-6.
Procedure
Set the data.
Change the data and set the
frequency (f) to the specified
value.
Press PAUSE button.
Set the data.
VC-242 board
50
26
24
51
25
IC771
37
IC706
75
1
76
100

2. Zoom Key Center Adjustment

Set the A/D value center of the microprocessor to the center voltage
of the zoom key.
If deviated, the zoom lens operates of itself ,even if the zoom key is
the center position.
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Note: Don't touch the zoom switch during adjustment.
Adjusting method:
Order Page Address Data
1
0
2
6
3
F
4
0
13
12
1
48
5-16
Not required
Display data of page: 6, address: 50
Adjustment remote commander
F
5D
Procedure
01
01
Set the data.
50
Read the data, and this data is
named D
.
50
5D
D
Set the data, and press PAUSE
50
button.
01
00
Set the data.

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