Panasonic SC-HTR310P Service Manual page 85

Step 7 : Slightly lift up Main P.C.B. and shift forward Main
P.C.B. as arrow shown in sequences (from 1-2).
Step 8 : Ensure there is a gap between Heat sink on the Main
P.C.B. and P.C.B. Support when moving of the Main P.C.B..
Step 9 : Remove 2 screws.
Step 10 : Detach 17P FFC cable at the connector (CN5050) on
D-Amp P.C.B..
Step 11 : Detach 8P FFC cable at the connector (CN5500) on
D-Amp P.C.B..
Step 12 : Remove 3 screws.
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SC-HTR310P