Panasonic SA-PT875GA, Service Manual

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Step 2 Remove 1 screw.
Step 3 Remove the TR spring in the direction of arrows.
Step 4 Remove the Audio Digital Power Amp IC (IC5400) from
the D-Amp P.C.B.
Caution: Handle the D-Amp P.C.B. with care due to its high
temperature after prolonged use. Touching it may lead to
injuries.
Note: Refer to the diagrams of D-Amp P.C.B. (Item 18.4.) for
location of the electrical components.
9.19.2. Assembly of Audio Digital Power
Amp IC (IC5400)
Step 1 Mount the Audio Digital Power Amp IC (IC5400) to the
D-Amp P.C.B.
Caution: Ensure pins of the Audio Digital Power Amp IC
(IC5400) are properly seated and soldered on D-Amp P.C.B.
Step 2 Screw the TR spring to the heatsink unit A.
Step 3 Use a blower to remove the minute particles that might
be caused after the process of the screwing TR spring to the
heatsink unit A.
Step 4 Solder pins of the Audio Digital Power Amp IC (IC5400)
on the solder side of D-Amp P.C.B.
Caution: Ensure pins of the Audio Digital Power Amp IC
(IC5400) are properly seated and soldered on D-Amp P.C.B.
Step 5 Follow (Step 5) to (Step 6) of Item 9.16.2