Panasonic SA-AK631PL Service Manual page 27

Step 11 Lift up the left end of spindle base unit in the direction
of arrow (1), and then remove the unit in the direction of arrow
(2).
Step 12 Remove slide plate 1 and slide plate 2.
Step 13 Remove the traverse relay gear, traverse cam gear
and drive gear.
[Dissassembly/reassembly for the spindle base unit]
Step 1 Draw the 5 disc spacers.
Step 2 Pushing the claw, slide the support plate in the direction
of arrow, and then remove it.
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SA-AK63 1PL