Sharp VIEWCAM VL-WD650U, Service Manual

Page: 39 / 133

39
VL-WD650U
10-2-4. Adjustment procedures
Item
Adjustment method
(1) Auto-focus adjustment
Set the unit to the auto-focus function adjustment mode and write data to the address "0000" one after another. This executed
the adjustments automatically. The items to be adjusted are as listed below. Every time an adjustment is made properly, the data
"FF" is written to the address. After each adjustment, make sure that the adjustment has been made properly, and then go on to
the next adjustment item.
Address Data Adjustment item
0000 0012 WIDE end adjustment
0006 WIDE end focus
∞
position adjustment
0008 TELE end focus
∞
position adjustment
000D Zoom tracking adjustment
Note 1: To adjustment of
∞
position is executed by actually picking up the image of subject. For this adjustment use the subject with
clear profile.
Especially, if the adjustment of TELE end focus
∞
position is made without picking up the image of remote subject,
adjustment failure may occur.
Adjustment of WIDE end focus
∞
position: 3 m or more
Adjustment of TELE end focus
∞
position: 50 m or more
Note 2: In case of
∞
position adjustment the field depth is important to ensure the adjustment accuracy. If the field depth is high,
the focus becomes too stable , which may cause incorrect adjustment of
∞
position. Therefore the adjustment must be made
with low field depth (with iris opened).
The iris can be opened with the high-speed shutter.
1. It returns to the normal operation mode.
2. In the normal operation mode, set the high-speed shutter mode until the iris is opened. (Refer to the operation manual.)
3. Display “CAM ADJ” with the remote control for service.
4. It shifts to the auto-focus adjustment mode.
5. Perform the
∞
position adjustment.
6. After completing the
∞
position adjustment, return the high-speed shutter mode to the normal mode.
(2) Iris basic adjustment
This is for adjusting the operating point of the hole element installed in the iris meter of the lens.
The adjustment is automatically done by sequentially writing the data at the address "0000" in the camera signal system
adjustment mode.The items to be adjusted are as listed below. Every time an adjustment is made properly, the data "00FF" is
written to the address.
Address Data Adjustment item
0000 0009 Hall offset adjustment
000A Iris offset adjustment
000B Iris close adjustment
In the camera signal system adjustment mode (write the data " 00" to the address "0000"), set the unit to the
adjustment mode.
(3) Black balance adjustment/A/F noise adjustment
1)Prior to the adjustment, initialize the data for the addresses "0026", "0028", "002A", "002C", "002E", "0030".
Write " FF" to all of these address.
2) Write the data " 01" to the address "0001" This starts the adjustment automatically.
When the adjustment is completed properly, the data "00FF" is written automatically.
F F