SHARP VLZ7, VLZ7U, VLZ8U, VLZ75U Service Manual

VL-Z7U/Z75U/Z8U

Supplement

SERVICE MANUAL

S93I2VL-Z7U//

SUPPLEMENT

LIQUID CRYSTAL DISPLAY CAMCORDER NTSC

VL-Z7U
VL-Z75U

MODELS

This Supplement has been issued to correct typos, and improve poor explanations, which were found
in the already issued Service Manual (S43Z2VL-Z7U//) for page p.43 and p.44 this model. Please refer to
this document for your better understanding.

CONTENTS

(5)Camera adjusting procedure............................................................................................................... 2

10-2-4.Adjusting procedure ..................................................................................................................... 3

VL-Z8U

Page

SHARP CORPORATION

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

1

10-2-4. Adjusting procedure

VL-Z7U/Z75U/Z8U

Supplement

Item

(1) Adjustment of auto focus

The following adjustments are performed automatically by establishing the auto focus adjustment mode and writing the following
data at address "13FD" sequentially. The adjustment items are as shown in the table below. When an adjustment is completed
normally, data "FF" is written, which should be confirmed before proceeding to the next adjustment.

Address Data Adjustment item

13 F D 0012 Adjustment of wide end

0008 Adjustment of tele end focus ∞ position
0006 Adjustment of wide end focus ∞ position
000D Adjustment of zoom tracking

Note 1: During the adjustment of ∞ position, a subject should be shot actually. Make this adjustment while shooting a subject with

a clear-cut outline. In the case of the adjustment of tele end focus ∞ position in particular, if it is performed without shooting
a distant subject actually, the ∞ position will not be adjusted properly.

Adjustment of wide end focus ∞ position: 3 m or more
Adjustment of tele end focus ∞ position: 50 m or more

Note 2: In the case of the adjustment of ∞ position, the depth of field is important in insuring accuracy. If the depth of field is deep,

the ∞ position may be adjusted improperly the subject hardly falls out of focus. Make this adjustment with the depth of
field being shallow (the iris opened).

It is possible to open the iris using the high-speed shutter.

1. Establish the normal mode.

2. Call the V-V adjust sports mode in normal operation. (Refer to the instruction manual.)

3. Display "CAM ADJ" by using the remote control for servicing.

4. Establish the auto focus adjustment mode.

5. Perform the adjustment of ∞ position.

6. After the completion of the adjustment of ∞ position, set the V-V adjust back to the off position.

After exiting the auto focus adjustment mode (writing data " FF" at address "13FE"), establish the camera signal
system adjustment mode (writing data " 00" at address "0000").

Adjustment method

(2)Basic adjustment of iris

It is performed to adjust the operating point of the hall element installed in the iris meter.
The following adjustments are performed automatically by writing the following data at address "13FD" sequentially in the camera
signal system adjustment mode. The adjustment items are as shown in the table below. When an adjustment is completed
normally, data "00FF" is written automatically.

Address Data Adjustment item

13 F D 0009 Adjustment of hall offset

000A Adjustment of iris offset
000B Adjustment of iris close

(3)Adjustment of black balance/Adjustment of A/F noise

This adjustment is performed automatically by writing data " 01" and data " 08" at address "0001". When the adjustment
is completed normally, data "00FF" is written automatically.
The adjustment item are as shown in the table below.

Address Data Adjustment item

0001 01 Adjustment of Tape-Mode black balance and A/F noise.

08 Adjustment of Card-Mode black balance.

3