Panasonic SA-PT550GCP Service Manual page 63

11.1.3. Disassembly of Loading Section
Step 1 Spread the tabs at the both sides and push out the drive
arm.
Step 2 Hook the lock lever spring on the lock lever projection
part temporarly.
Step 3 Unlock the tab and remove the lock lever.
Step 4 Remove the belt.
Step 5 Unlock the tab and remove the pulley gear.
Step 6 Remove the relay gear.
Step 7 Turn the change lever in the arrow direction till it stops.
Step 8 Hook the change lever spring on the change lever
project part temporarily.
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