Read Sony CCD-TR555 / CCD-TR555E Service Manual online
6-27
1-3-1. EVR Initial Data Input
Mode
Stope
Signal
Any video signal
Adjustment page
D
Input procedure:
1-3-2. VCO Adjustment (VC-175 board)
Purpose :
To make the TG frequency constant (amplitude).
Adjustment error :
VF picture will lose sync when error is large.
Mode
Adjustment mode (A)
Signal
30% all white signal
Measurement Point
VC-175 board CN006 pin !• (VCO)
Measuring Equipment
Oscilloscope (DC range)
Adjustment Page
D
Adjustment Address
4F
Specification Value
A=1.80
±
0.05V
Adjustment procedure:
Order
Page
Address
Data
Procedure
1
0
01
01
Set the data.
2
40
38
41
00
42
20
43
20
44
82
45
00
46
[88] (A8)
47
73
D
48
A0
After setting the data, press the PAUSE button.
49
B0
4A
C0
4B
70
4C
93
4D
93
4E
B0
4F
90
50
5A
51
80
3
0
01
00
Set the data.
Order
Page
Address
Data
Procedure
1
Set up the adjustment mode (A). (Refer to “Adustment Video Signal” on page 6-25.)
2
0
01
01
Set the data. (Preparation)
3
Check the GND level on an oscilloscope in DC mode.
4
D
4F
Change the data until the VCO voltage (A) becomes the specification value.
5
Press the PAUSE button.
6
Exit the adjustment mode (A). (Refer to “Adustment Video Signal” on page 6-25.)
7
0
01
00
Set the data. (End)
Fig. 6-1-12.
No mark : NTSC/PAL
[ ] :
[ ] :
NTSC
( ) :
PAL
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