Panasonic SA-AK520E Service Manual page 49

Step 4 Unsolder the plunger terminals (2 points).
Step 5 Unsolder the motor terminals (2 points).
Step 6 Release the 2 claws (A), and then remove the Motor P.C.B.
Step 7 Release the claw (B), and then remove the motor ass'y.
[Notice for motor ass'y installation]
1. Locate the name plate of motor to the traverse ass'y.
2. Align the hole of motor with the ribs.
10.8. Replacement for the pinch roller ass'y and head block
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