Sony SAL300F28G Service Manual ▷ View online
5-33
SAL300F28G (2.8/300 G) (300mm F2.8 G)
5)
Next, the Focus Pattern Check is started, set the focus to the near position and press down the ENTER key.
Fig.5-8-7
6)
Next, set the focus to infinity position at about 10 sec.
Fig.5-8-8
7)
When the Focus Adjustment Point Check finishes normally, the MR Waves check is started, set the focus to near position at about 5
sec at a stretch.
Fig.5-8-9
8)
Next, set the focus to infinity position at about 5 sec at a stretch.
Fig.5-8-10
9)
When the MR Waves Check finishes normally, the Motor Build in Check is started, set the focus to near position at about 3 sec at a
stretch.
Fig.5-8-11
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SAL300F28G (2.8/300 G) (300mm F2.8 G)
10) Input the numerals (uppermost 3 digits) written on the motor flexible.
Fig.5-8-12
Fig.5-8-13
11) When the Motor Build-in Check finishes normally, the DMF Ring Rotation Detect SW check is started, set the focus to near position
and press down the ENTER.
Fig.5-8-14
12) When the DMF Ring Rotation Detect SW Check finishes normally, ÅgOKÅh is displayed on the pop-up window, and press the
ENTER key to return to the initial window.
Fig.5-8-15
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SAL300F28G (2.8/300 G) (300mm F2.8 G)
5-8-2. Half Completion Adjustment
In case of error in the finished inspection, confirm the cause based on the content of the display.
1. Focus Adj Point adjustment, Focus pattern inspection
The following pop-up window is one example.
Fig.5-8-16
Fig.5-8-17
•
Re-confirm the [5-6. Focus Brush (A Encoder Brush) Position Adjustment].
•
Cleaning of flexible pattern and brush
•
Replacement of brush
•
Defect of rotational operation of focus ring (It does not meet the specified speed.)
2. MR Waveform Inspection
In case of abnormal MR waveform, the collapsed waveform is displayed.
The menu below shows an example.
Fig.5-8-18
Fig.5-8-19
Fig.5-8-20
•
Deformation, damage or defective position of MR sensor base plate block.
•
Defect of rotational operation of focus ring (It does not meet the specified speed.)
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SAL300F28G (2.8/300 G) (300mm F2.8 G)
If not adjusted, perform the steps below.
1)
Correct the position of MR sensor base plate block as shown in Fig. 5-8-21.
2)
Perform the MR waveform inspection again.
3)
Repeat steps 1) and 2) until the inspection OK.
4)
After completing the adjustment, apply the adhesive bond (B-10) to the tip of two screws.
Fig.5-8-21
3. Motor Assembly Inspection
The following pop-up window is one example.
Fig.5-8-22
If the NG judgment continues three times in the motor assembly inspection, perform the MR waveform inspection.
When the MR waveform inspection is OK, perform the adjustment of MR sensor.
When the MR waveform inspection is NG, replace the ultrasonic motor unit.
4. DMF Ring Rotation Detector SW Inspection
The following pop-up window is one example.
Fig.5-8-23
•
Deformation or damage of MF rotation detector switch plate block.
•
Installation position of MF rotation detector switch plate block.
MR Sensor Base Plate Block
Apply the adhesive bond (B-10)
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