Panasonic SA-AK230PL Service Manual page 27

NOTE:
Hold the loading stopper ass'y manually bacause it is flipped by
spring.
Step 6 Remove the cushion spring.
Step 7 Remove the loading stopper ass'y in the direction of
arrow.
Step 8 Release the 2 claws, and then remove the relay gear A.
Step 9 Release the 2 claws, and then remove the spindle shaft.
Step 10 Remove the lower spindle spring with tweezers.
Step 11 Force the lower hook with thin tip of minus screwdriver.
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SA-AK230PL