Read Sony SAL300F28G Service Manual online
1-2
SAL300F28G (2.8/300 G) (300mm F2.8 G)
1-5-2. Foucus Trouble
Check the operation
again.
Replace the defective part
or apply the grease.
OK
NG
OK
OK
OK
OK
Function NG
Position NG
Focus trouble
Replace the defective part
or apply the grease.
Check of operation
of the connection box
and ultra sonic motor.
Check the focus cam
ring and outer
tube.
NG
NG
NG
NG
NG
END
OK
Check the position
and deformation
at the tip of the
A encoder brush.
Adjust the position, or
replace the A encoder brush.
Check pattern of
the DV encoder flexible.
Clean the pattern of the
DV encoder flexible.
Replace the
DV encoder flexible.
Perform the A encoder
(focus) brush position
check/adjustment.
(See page 5-28.)
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