Panasonic SA-AK640E Service Manual page 204

CRS1
Step 7: Release the plunger lever, rotate the gear clockwise
continuously until it stop at "HOME" position.
Step 8: Install the open lever spring as shown.
Step 9: Install the top cover, fix the top cover hook to the
tray rear stopper as arrow shown.
Step 10: Fix the top cover as arrow shown, the 2 claws
should be latched.
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