Panasonic SC-TM23 Service Manual page 25

Step 2 Pushing the claw, slide the support plate in the
direction of arrow, and then remove it.
Step 3 Rotate the disc lever in the direction of arrow (1),
draw the disc lever.
NOTE:
Take care not to lose the disc lever spring.
Step 4 Release the 2 claws, and then draw the relay gear B.
Step 5 Release the 2 claws as shown below.
NOTE:
Hold the loading stopper ass'y manually bacause it is flipped
by spring.
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