Panasonic SA-AK270EB Service Manual page 46

SA-AK270EB / SA-AK270EG
Step 8 Remove 1 screw at rear panel.
Step 9 Lift up Main P.C.B. as arrow shown.
Cautipn Note: While lifting up Main P.C.B., please handle Jack
(JK2801) and Tuner Pack with care.
9.22. Replacement of Voltage
Regulator IC (IC2731)
Follow the (Step 1) - (Step 5) of Item 9.4
Follow the (Step 1) - (Step 7) of Item 9.5
Follow the (Step 1) - (Step 5) of Item 9.19
Follow the (Step 1) - (Step 8) of Item 9.21
Step 1 Desolder pins of the Voltage Regulator IC (IC2731) on
the reverse side of Main P.C.B..
Step 2 Remove 1 screw form the Main P.C.B..
Step 3 Remove the Voltage Regulator IC (IC2731) from the
heat sink.
Caution: Handle the heat sink with caution due to its high
temperature after prolonged use. Touching it may lead to
injuries.
9.22.1. Assembly of Voltage Regulator IC
(IC2731)
Step 1 Apply grease to heat sink.
Step 2 Fix and screw the Voltage Regulator IC (IC2731) to the
heat sink.
Note: Ensure the Voltage Regulator IC (IC2731) is tightly
screwed to the heat sink.
9.23. Replacement of Switch
(Q2751)
Follow the (Step 1) - (Step 5) of Item 9.4
Follow the (Step 1) - (Step 7) of Item 9.5
Follow the (Step 1) - (Step 5) of Item 9.19
Follow the (Step 1) - (Step 8) of Item 9.21
Step 1 Desolder pins of the Switch (Q2751) on the reverse side
of Main P.C.B..
Step 2 Remove 1 screw form the Main P.C.B..
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