Sony DSR-250, Service Manual

Page: 176 / 322

5-18
5. 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.
Subject Siemens star chart with ND filter for
the minipattern box (Note1)
Measurement Point Check operation on TV monitor
Measuring Instrument
Adjustment Page F
Adjustment Address 24 to 2B, 36 to 3D, 5D
Note1: Dark Siemens star chart.
Note2:
Check that the data of page: 6, address: 02 is “00”. If not, to page:
6, address: 01, set data: 00, and press the PAUSE button.
Switch setting:
ND FILTER ...................................................................... OFF
(The data of page: 6, address: 9D is “00”.)
Preparations:
1)
The minipattern box is installed as shown in the following
figure.
Note:
The attachment lenses are not used.
2) Install the minipattern box so that the distance between it and
the front of the protection glass of the camcorder is less than
3cm. (Remove the lens hood.)
3) Make the height of the minipattern box and the camcorder equal.
4) Check that the output voltage of the regulated power supply is
the specified voltage.
5) Check that at both the zoom lens TELE end and WIDE end,
the center of the Siemens star chart and center of the exposure
screen coincide.
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.
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 6 01 13 Set the data, and press PAUSE
button. (Note3)
3 6 01 27 Set the data, and press PAUSE
button.
4 6 02 Check that the data changes to
“01”. (Note4)
5 F 2A Check that the data is “00” to
“07”.
Note3:
Don’t touch the zoom switch. If you touch the zoom switch, the
zoom center adjustment data will be rewritten in the value which
isn’t correct.
Note4: The adjustment data will be automatically input to page: F, address::
24 to 2B, 36 to 3D, 5D.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 6 01 00 Set the data, and press PAUSE
button.
2 6 02 00 Set the data.
3 0 01 00 Set the data.
4 Turn off the power and turn on
again.
5 Perform “Flange Back Check”.
Minipattern box
Below 3 cm
Camcorder
Camera
table
Red (+)
Black (–)
Yellow (SENS +)
White (SENS –)
Black (GND)
Need not connected
Regulated power supply
Output voltage : Specified voltage
±
0.01Vdc
Output current : more than 3.5A
Fig. 5-1-8.