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6-2-6. 28 MHz Original Oscillation Adjustment
(VC-179 (A)/179 (B) board)
Adjust the 28 MHz oscillation of the synchronization clock.
If the oscillation is not 28 MHz, the period will be inaccurate or the
image will not be in color.
Subject
Not required
CL401 (IC402 !™ pin)
Measurement Point
Measuring Instrument
Frequency counter
Adjustment Page
F
Adjustment Address
22
14318181 ± 71Hz (NTSC)
Specified Value
14187500 ± 70Hz (PAL)
Adjusting method:
1) Set data: 01 to page: 6, address: 00.
2) Change the data of page: F, address: 22 to adjust the oscillation
frequency to 14318181 ± 71Hz (14187500 ± 70Hz).
6-2-7. V SUB Adjustment
Set the CCD imager V SUB voltage to the voltage specified for the
imager.
Subject
Not required
Adjustment Page
F
Adjustment Address
04
Adjusting method:
1) Read the V SUB voltage code of the CCD imager.
Obtain the corresponding V SUB data from the following table.
2) Set data: 01 to page: 6, address: 00.
3) Set the V SUB data to page: F, address: 04.
4) Press the PAUSE button of the adjusting remote commander.
V SUB
Voltage
Voltage Voltage
Data
Code
(Vdc)
e
70
9.0
f
77
9.5
g
7C
10.0
h
82
10.5
j
88
11.0
k
8E
11.5
l
94
12.0
m
9A
12.5
n
A0
13.0
p
A6
13.5
V SUB
Voltage
Data
Code
(Vdc)
*1
q
AC
14.0
r
B2
14.5
s
B8
15.0
t
BE
15.5
u
C4
16.0
v
CA
16.5
w
D0
17.0
x
D6
17.5
y
DD
18.0
z
E2
18.5
6-2-8. VRG Adjustment
Set the CCD imager V RG voltage to the voltage specified for the
imager.
Subject
Adjustment Page
Adjustment Address
Adjusting method:
1) Read the VRG voltage code of the CCD imager.
Obtain the corresponding VRG data from the following table.
2) Set data: 01 to page: 6, address: 00.
3) Set the VRG data to page: F, address: 05.
4) Press the PAUSE button of the adjusting remote commander.
Voltage Code
1
2
3
4
5
6
7
CD-154A (A) board
*1
VRG voltage code
(Example) When "6m" is displayed:
The V SUB voltage code is "m" and therefore the V
SUB data will be "9B".
The VRG voltage code is "6" and therefore the VRG
data will be "B8".
6-16
Not required
F
05
VRG
Data
Voltage (Vdc)
34
4E
69
83
9E
B8
D3
6m
V SUB voltage code
Fig. 6-7.
*2
1.0
1.5
2.0
2.5
3.0
3.5
4.0
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