Flange Back Adjustment (Using Minipattern Box); Flange Back Adjustment - Sony MVC-FD85 Service Manual

3. Flange Back Adjustment

(Using Minipattern Box)
The inner focus lens flange back adjustment is carried out
automatically. In whichever case, the focus will be deviated during
auto focusing/manual focusing.
Mode STILL
Subject Siemens star chart with ND filter for
the minipattern box (Note 1)
Measurement Point
Check operation on TV monitor
Measuring Instrument
Adjustment Page F
Adjustment Address 14 to 25
Note 1: Dark Siemens star chart.
Note 2: If the data of page: 6, address: 02 is "01", select page: 6, address:
01, set data: 00, and press the PAUSE button.
Preparations before adjustments:
The minipattern box is installed as shown in the following figure.
Note: the attachment lenses are not used.
Specified voltage: The specified voltage varies according to the
minipattern box, so adjust the power supply
output voltage to the specified voltage written
on the sheet which is supplied with the
minipattern box.
Minipattern box
Regulated power supply
Output voltage : Specified voltage ± 0.01Vdc
Output current : more than 3.5A
Red (+)
Black (–)
Yellow (SENS +)
White (SENS –)
Black (GND)
Fig. 5-1-9.
Below 3 cm
Camera
Camera
table
Need not connected
Adjusting method:
1) Install the minipattern box so that the distance between it and
the front of the lens of the camera is less than 3cm.
2) Make the height of the minipattern box and the camera equal.
3) Check that the output voltage of the regulated power supply is
the specified voltage.
4) Select page: 0, address: 01, and set data: 01.
5) Check that the center of the Siemens star chart and the center
of the exposure screen coincide.
6) Check that the data of page: F, address: 14 to 25 is the initial
value (See table below).
Address Data Address
14 12/1C
15 A8/94
16 18/26
17 C5/EC
18 12/13
19 C9/B9
1A 00
Note: MVC-FD85/MVC-FD90
7) Select page: 6, address: 01, set data: 13, and press the PAUSE
button of the adjustment remote commander.
8) Select page: 6, address: 01, set data: 27, and press the PAUSE
button.
(The adjustment data will be automatically input to page: F,
addresses: 14 to 25.)
9) Select page: 6, address: 02, and check that the data is changed
to "01".
Processing after Completing Adjustments:
1) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
2) Perform "Flange Back Check".
5-15
Data Address
1B 00 22
1C 00 23
1D 00 24
1E 41/46 25
1F 00
20 20
21 20
Data
20
44
0A
00