Sony SAL24105 Service Manual ▷ View online
4-26
SAL24105 (3.5-4.5/24-105) (24-105mm F3.5-4.5)
4-6.
FOCUS SCALE PLATE, POSITION ADJUSTMENT
Note:
• The focus-shift adjustment/flange back adjustment should be completed.
• Before focus brush ring position adjustment, be sure to perform the position adjusemtnt of distance scale plate.
1. Adjustment
1)
Set the focus ring tube to the infinite end.
2)
Align the white line on the focus scale plate with the marking-off line on the fixed holding tube block.
3)
Return a little the focus ring, and apply the adhesive bond (B-10) to the location shown in the figure.
Fig.4-6-1
Fixed Holding Tube Block
Focus Scale Plate
Focus Scale Plate
White Line
Marking-off Line
Focus Ring
Apply the adhesive
bond (B-10)
bond (B-10)
4-27
SAL24105 (3.5-4.5/24-105) (24-105mm F3.5-4.5)
4-7.
FOCUS-SHIFT CHECK/ADJUSTMENT (APERTURE (AMOUNT OF SPHERICAL
ABERRATION))
ABERRATION))
This section describes the check/adjustment of focus-shift amount resulting change of focal-length by aperture setting.
Equipment
• 1000 mm Collimator
• Flange Back Tester
• A-mount Attachment
• Flange Back Gauge (43.50mm)
• Aberration measuring cap 62mm (SAL24105)
1. Preparations
1)
Perform “1. Preparations” of “4-4-1. Flange Back (f’F) Check”.
2)
Set the checking lens focus to the infinite.
3)
Set the focal length 105mm.
2. Checking Method
1)
Set the lens aperture to the open aperture position, and measure the flange back (f’F).
2)
Set the aberration measuring cap 62mm (F8 equivalent) on the tip of lens as shown in the Fig.4-7-1, then measure the flange back
(f’F).
Fig.4-7-1
3)
Calculate amount of focus-shift using the following formula, and check that the specification is satisfied.
Note:
The focus-shift amount of the checking lens is difference between the flange back (f’F) of open aperture and flange back
(f’F) reading (using aberration measuring cap 62mm).
Focus-shift = Flange back (f’F) reading (using aberration measuring cap 62mm) - flange back (f’F) of open aperture reading
Specification
Focus-shift (mm) = – 0.11mm to +0.13mm
Aberration measuring cap 62mm (SAL24105)
Ver 1.3 2007.07
4-28
SAL24105 (3.5-4.5/24-105) (24-105mm F3.5-4.5)
4-8.
LENS ROM CHECK
Equipment
• Personal Computer
• Finished Inspection JIG (AC100 V only)
• Lens Adjustment Program (ActuatorChecker.exe)
1. Preparations
1)
Connected to equipment with checking lens. (Refer to Section 4-1-3.)
2)
Start up of “ActuatorChecker.exe”.
3)
Click
[Set up]
, and perform the initial setting. (Refer to Section 4-1-4.)
2. Checking Method
1)
Click
[ROM Data]
.
Fig.4-8-1
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.4-8-2
4-29
SAL24105 (3.5-4.5/24-105) (24-105mm F3.5-4.5)
3)
The message “Move FOCUS to Infinity, ZOOM to WIDE position. Then push [ENTER].” is displayed on the pop-up window.
Set the focus to the infinity, zoom to wide position and press down the ENTER key.
Fig.4-8-3
4)
When “OK” is displayed on the pop-up window, press the ENTER key to return to the initial window.
Fig.4-8-4
3. In case of error display in the ROM Data
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.4-8-5
Fig.4-8-6
2)
Although the lens is positioned at the infinity position, if the “NG” appears, confirm or perform the following.
• 4-9-1. Zoom Brush Position Adjustment (Search Zoom Adjustment Point)
• 4-10-1. Focus Brush Position Adjustment (Search Focus Adjustment Point)
• Cleaning of flexible pattern or the brush.
• Replaceing the brush.
• Replaceing 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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