Panasonic SA-AK270EB Service Manual page 48

SA-AK270EB / SA-AK270EG
9.25. Replacement of Switch
Regulator IC (IC5701)
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 4) of Item 9.24
Step 1 Desolder pins of the switch regulator IC (IC5701) on the
reverse side of SMPS P.C.B..
Step 2 Remove 1 screw from the switch regulator IC (IC5701).
Step 3 Remove the switch regulator IC (IC5701) from the heat
sink A.
Caution: Handle the heat sink A with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
Note : Refer to the diagrams of SMPS P.C.B. (Item 19.6.) for
location of the part.
9.25.1. Assembly of Switch Regulator IC
(IC5701)
Step 1 Apply grease to the heat sink A.
Step 2 Fix and screw the switch regulator IC (IC5701) to the
heat sink A.
Special Note: Ensure the switch regulator IC (IC5701) is tightly
screwed to the heat sink A.
Step 3 Solder pins of the switch regulator IC (IC5701) on the
reverse side of SMPS P.C.B..
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