Read Sony SAL20F28 Service Manual online
SAL20F28 (2.8/20) (20mm F2.8)
1-4
1-5-2. Focus 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 the coupler.
Check the outer barrel
and focus ring.
NG
NG
NG
NG
NG
END
OK
Check the installation of
the main flexible unit.
reinstall the main
flexible unit.
Check pattern
of the main flexible unit.
Clean the pattern of the
main flexible unit.
Replace the
main flexible unit.
Check the foecusing
operation again.
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