Sony SAL135F28 Service Manual ▷ View online
4-19
SAL135F28 (STF 2.8(T4.5)/135) (135mm F2.8 [T4.5] STF)
4-2-3. M Aperture Diameter Adjustment
Equipment
• Adhesive bond (B-10)
1. Adjustment Method
1)
Remove the adhesive bond of the three screws fixing the M iris retainer plate.
Fig.4-2-14
2)
Set M iris indicated portion as shown in figure.
Fig.4-2-15
3)
Turn the M aperture unit holding plate to adjust the position where the M diaphragm blades are hidden into the edge completely.
Fig.4-2-16
M Aperture Unit Holding
Adjustment Screws
for Aperture Diameter
(Three areas)
for Aperture Diameter
(Three areas)
M Aperture Operation Ring
Index of M Iris
4-20
SAL135F28 (STF 2.8(T4.5)/135) (135mm F2.8 [T4.5] STF)
4)
After the adjustment is completed, apply the adhesive bond (B-10) to the head of the three screws as shown in the Fig.4-2-17.
Fig.4-2-17
5)
Assemble the lens completely.
M Aperture Unit Holding Plate
Apply the Adhesive Bond
(B-10) (Three areas)
(B-10) (Three areas)
4-21
SAL135F28 (STF 2.8(T4.5)/135) (135mm F2.8 [T4.5] STF)
4-2-4. Aperture Diameter Brush Pattern Check (Iris Pattern)
Equipment
• Personal Computer
• Finished Inspection JIG (AC 100 V only)
• Lens Adjustment Program (ActuatorChecker)
1. Preparations
1)
Connected to equipment with checking lens. (Refer to Section 4-1-3.)
2)
Start up of “ActuatorChecker”.
3)
Click
[Set up]
, and perform the initial setting. (Refer to Section 4-1-4.)
2. Checking Method
1)
Click the
[Iris Pattern]
.
Fig.4-2-18
2)
The Serial window appears. Input the lens serial number.
Note:
When
[OK]
is clicked without inputting the serial number, the date executed is displayed on the completion window of each
item.
Fig.4-2-19
3)
The message “Move IRIS to [A]. Then push [ENTER].” is displayed on the pop-up window.
Set the iris to the
[A]
position and press down the ENTER key.
Fig.4-2-20
4-22
SAL135F28 (STF 2.8(T4.5)/135) (135mm F2.8 [T4.5] STF)
4)
When the M aperture (fully open) position check finishes normally, the message “Move IRIS to [6.7] from [A] at about 5sec.” is
displayed on the pop-up window.
Set the iris to the 6.7 and press down the ENTER key.
Fig.4-2-21
5)
When the M aperture (minimum aperture) position check finishes normally, the message “Reverse IRIS to [A] from [6.7] at about
5sec.” is displayed on the pop-up window.
Set the iris to the
[A]
position and press down the ENTER key.
Fig.4-2-22
6)
When the infinity position check finishes normally, “OK” is displayed on the pop-up window, and press the ENTER key to return to
the initial window.
Fig.4-2-23
3. In case of error display in the Iris Pattern (A position first try)
1)
When the error display and the NG display appear to the pop-up window, press the ENTER key to return to the initial window, and
perform “2. Checking Method”again.
Fig.4-2-24
Fig.4-2-25
2)
Although the aperture is positioned at the A position, if “NG” appears, confirm or perform the following.
• Cleaning of flexible pattern or the brush.
• Replacing the brush.
• Replacing the main flexible unit.
3)
Perform “2. Checking Method”again, repeat the inspection until “OK” appears on the pop-up window.
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