Panasonic SA-AK631PL Service Manual page 25

9.13.3. Disassembly and reassembly for mechanism base drive unit
Step 1 Remove 3 screws.
Step 2 Release the claw, and then remove the gear holder.
Step 3 Remove the belt and change gear spring.
NOTE:
Take care not to lose the change gear spring.
Step 4 Remove the pulley gear, change gear and UP/DOWN
gear.
NOTE:
Force the right guide bar of tray base manually not to move
upwards.
Step 4 Holding the disc tray manually, push the disc tray in the
direction of the arrow.
Step 5 Release the 2 claws, and then remove the bottom SW
P.C.B..
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SA-AK63 1PL