Sony SAL85F14Z Service Manual ▷ View online
4-25
SAL85F14Z (Planar 1.4/85) (Planar T
*
85mm F1.4 ZA)
4-5.
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 72mm (SAL85F14Z)
1. Preparations
1)
Perform “1. Preparations” of “4-4-1. Flange Back (f’F) Check”.
2)
Set the checking lens focus to the infinite.
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 72mm (F8 equivalent) on the tip of lens as shown in the Fig.4-5-1, then measure the flange back (f’F).
Fig.4-5-1
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 72mm).
Flange back (f’F) reading (using aberration measuring cap 72mm) - Focus-shift = flange back (f’F) of open aperture reading
Specification
Focus-shift (mm) = +0.02 to +0.12
4)
When the focus-shift is out of specification, perform the parts replacement and adjustment/check referring to the Fig.4-5-2.
Fig.4-5-2
5)
Perform the “4-9. WRITE dSB”.
Aberration measuring cap 72mm (SAL85F14Z)
Replace the 2ND LENS
HOLDER BLOCK (A-1527-027-A)
4-4. FLANGE BACK (f'F)
4-5. FOCUS-SHIFT CHECK
CHECK/ADJUSTMENT
OK
NG
END
Replace the BLOCK, 1ST BALL
FRAME (B) LENS (A-1197-811-B)
4-4. FLANGE BACK (f'F)
4-5. FOCUS-SHIFT CHECK
CHECK/ADJUSTMENT
OK
END
Replace the G4
/
G5
(2-693-409-01)
4-4. FLANGE BACK (f'F)
4-5. FOCUS-SHIFT CHECK
CHECK/ADJUSTMENT
OK
END
NG
Ver. 1.5 2008.05
The changed portions from
Ver. 1.4 are shown in blue.
Ver. 1.4 are shown in blue.
4-26
SAL85F14Z (Planar 1.4/85) (Planar T
*
85mm F1.4 ZA)
4-6.
LENS ROM CHECK
Equipment
• Personal Computer
• Finished Inspection JIG (AC 100 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.4-6-1
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.4-6-2
4-27
SAL85F14Z (Planar 1.4/85) (Planar T
*
85mm F1.4 ZA)
3)
The message “Move FOCUS to Infinity position. Then push [ENTER].” is displayed on the pop-up window.
Set the focus to the infinity position and press down the ENTER key.
Fig.4-6-3
4)
When “OK” is displayed on the pop-up window, press the ENTER key to return to the initial window.
Fig.4-6-4
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.4-6-5
Fig.4-6-6
2)
Although the lens is positioned at the infinity position, if the “NG” appears, confirm or perform the following.
• 4-7-1. Focus Brush Position Adjustment
• 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.
4-28
SAL85F14Z (Planar 1.4/85) (Planar T
*
85mm F1.4 ZA)
4-7.
FOCUS BRUSH POSITION CHECK/ADJUSTMENT
4-7-1. Focus Brush Position Adjustment
Equipment
• Personal Computer
• Finished Inspection JIG (AC 100 V only)
• Lens Adjustment Program (ActuatorChecker.exe)
1. Preparations
1)
Disassemble or assemble the checking lens into the state of Fig.4-7-1.
2)
Set the focus position to infinity position.
Fig.4-7-1
2. Checking Method
1)
Loosen two screws fixing the brush base plate.
Fig.4-7-2
2)
Check the conduction between first pattern and third pattern from top as shown in figure below.
• When the brush comes to the area circled where no pattern exists, no conduction occurs. (Adjusted)
• When the brush comes to the area circled where the pattern exists, the conduction occurs. (Not adjusted)
Fig. 4-7-3
3)
If not adjusted in step 2), loosen two screws fixing the brush (For distance tube), and adjust the brush position, perform step 2) again.
4)
After adjustment, perform the “4-7-2. Focus Brush Position Check” and “4-7-3. Focus Brush Pattern Check”.
Brush Base Plate
Screws
Focus Cam Ring
Brush Base Plate
Adjustment : OK
Adjustment : NG
Check the conduction
Apply the
adhesive bond
(B-10)
adhesive bond
(B-10)
Brush
Main flexible pattern
No conduction
Conduction
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