Panasonic SA-HT650P Service Manual page 60

Step 19 : Remove all the screws.
Step 20 : Remove the spindle motor ass'y.
[Installing the optical pickup]
Step 1 : Pass the FFC through the slit of traverse basement.
Step 2 : Align the guide with the guide shaft 2.
Step 3 : Install the tip end of guide shaft 1 to the hole of guide B.
Step 4 : Install the guide shaft 1 to the guide A.
Step 5 : Install the spring and spring holder.