Panasonic SA-HT920P Service Manual page 21

Step 2 Flip the base mecha.
Step 3 Release the 2 claws in the direction of arrow (1), and then push the pulley pin in the direction of arrow (2).
11.11 Removal of the Loading Motor P.C.B.
l Follow the (Step 1) - (Step 2) of Item 11.1.
l Follow the (Step 1) - (Step 4) of Item 11.2.
Follow the (Step 1) - (Step 5) of Item 11.3.
l
Step 1 Remove 2 screws.
Step 2 Remove Loading Motor P.C.B.
11.12 Removal of the Drive Gear (A) & (B)
l Follow the (Step 1) - (Step 2) of Item 11.1.
l Follow the (Step 1) - (Step 4) of Item 11.2.
Follow the (Step 1) - (Step 5) of Item 11.3.
l