Sony SAL50M28 - Page 7

1-4
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
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 the coupler and
gear block.
Check the fixed holding
tube block and
fixed barrel unit.
NGNG
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 main flexible block.
Clean the pattern of the
main flexible block.
Replace the
main flexible block.
Perform the
brush position
check/adjustment.
(See page 4-17.)