Sony FD Mavica MVC-FD75, Service Manual

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Displayed data
1-3. CAMERA SYSTEM ADJUSTMENTS
1. HALL Adjustment
This adjustment sets the amplifier gain and offset to detect the iris
position of the lens.If disordered, the iris will oscillate or the indoor-
outdoor white balance will be faulty.
Mode CAMERA
Subject Any subject
Measurement Point
DDS display on the LCD screen
Measuring Instrument
(Note 2)
Adjustment Page F
Adjustment Address C7, C8
Specified Value When data on page: 2, address:
01 is 01, (Note 1)
Displayed data is 12 to 16.
When data on page: 2, address:
01 is 03, (Note 1)
Displayed data is 76 to 7A.
Note 1: The PAUSE button on the adjustment remote commander
must be pressed.
Note 2:
The right 2 digits of the displayed data of the LCD screen.
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 F 11 02 Press PAUSE button.
3 0 03 03
4 2 01 03 Press PAUSE button.
5 F C7 40 Press PAUSE button.
6 Note down the DDS
displayed data (Note 2), and
assume it as W
2
7 F C7 30 Press PAUSE button.
8 Note down the DDS
displayed data (Note 2), and
assume it as W
1
9 2 01 01 Press PAUSE button.
10 F C7 30 Press PAUSE button.
11 Note down the DDS
displayed data (Note 2), and
assume it as K
1
12 F C7 40 Press PAUSE button.
13 Note down the DDS
displayed data (Note 2), and
assume it as K
2
14 Convert W
1
, W
2
, K
1
and K
2
into decimal numbers to get
W
1
’, W
2
’, K
1
’ and K
2
’ (See
table 5-2-2. Hexadecimal-
Decimal Conversion table).
15 Calculate X
1
’ with the
formulas given below
(Calculate decimal numbers).
A’ = W
2
’ + K
1
’ - W
1
’ - K
2
’
B’ = W
1
’ - K
1
’
X
1
’ = 1600 + (48
×
A’) - (16
×
B’) / A’
Order Page Address Data Procedure
16 Convert X
1
’ into hexadecimal
number to get X
1
(Round off
the decimal place).
17 F C7 X
1
Press PAUSE button.
18 F C8 Change the data, so that the
DDS displayed data is “14”.
19 F C8 Press PAUSE button.
20 2 01 03 Press PAUSE button.
21 Note down the DDS
displayed data (Note 2), and
assume it as W
0
. If W
0
is in a
range of “76 to 7A”, perform
“Processing after Complteing
Adjustment”. If out of the
range, make the following
adjustment.
22 Convert W
0
into decimal
number to get W
0
’.
23 Calculate X
2
’ with the
formulas given below
(Calculate decimal numbers).
C’ = W
0
’ + K
1
’- W
1
’ - 21
X
2
’ = (100 - B’) ( X
1
’ - 48) +
(48
×
C’) / C’
24 Convert X
2
’ into hexadecimal
number to get X
2
.
25 F C7 X
2
Press PAUSE button.
26 F C8 Change the data, so that the
DDS displayed data is “78”.
27 F C8 Press PAUSE button.
28 2 01 01 Press PAUSE button.
29 Confirm that the DDS
displayed data is in a range of
“12 to 16”.
Processing after Completing Adjustment:
Order Page Address Data Procedure
1 2 01 00 Press PAUSE button.
2 0 03 00
3 F 11 00 Press PAUSE button.
4 0 01 00