Read Sony SAL135F28 Service Manual online
4-33
SAL135F28 (STF 2.8(T4.5)/135) (135mm F2.8 [T4.5] STF)
4-6.
FOCUS BRUSH POSITION ADJUSTMENT AND PATTERN CHECK
4-6-1. Focus Brush Position Adjustment and Pattern Check
Focus Brush Position Adjustment
1)
Remove the rear light interception sleeve, lens mount riveting block and ornamental tube.
2)
Set the focus ring to the infinite end.
3)
Check the conduction between first pattern and second pattern from top as shown in figure 4.
• 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. 4-6-1
4)
If not adjusted in step 3), loosen two screws fixing the brush (For focus ring), and adjust the brush position, perform step 2) and 3)
again.
5)
After adjustment, perform the [2 Focus Brush Position Check] and [3 Pattern Check].
Brush
Check the conduction
No conduction
Conduction
Adjustment : OK
Adjustment : NG
Loosen two screws fixing the brush, adjust the brush position
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