Service manual

VL-SD20U

VL-FD1U

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 "09FD" 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

09FD 000C MR censor adjustment

0012 WIDE end adjustment

0008 TELE end focus ∞ position adjustment

0006 WIDE end focus ∞ position 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.

In the camera signal system adjustment mode (write the address "0000" to, " 00") . Set the unit to the adjustment mode and

write data to the address "09FD" one after another. This executes the adjustments automatically. 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

09FD 0009 Hall offset adjustment

000A Iris offset adjustment

000B Iris close adjustment

* After completion of 1. Auto-focus adjustment, 2. Iris basic adjustment once restore the regular operation mode. Data "090F" is

written in the address "0003".

(3)Black balance adjustment/A/F noise adjustment

1) Prior to the adjustment, initialize the data for the addresses "0224", "0226", "0228", "022A", "022C", "022E".

Write " FF" (the last two digits are effective) 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.