Panasonic SA-AK570PL Servise Manual page 48

SA-AK570PL / SA-AK570GCP
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 Unit B.
Caution: Handle the heat sink Unit B 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.
8.29.1. Assembly of Switch Regulator IC
(IC5701)
Step 1 Apply grease to the heat sink Unit B.
Step 2 Fix and screw the Switch Regulator IC (IC5701) to the
heat sink Unit B.
Special Note: Ensure the Switch Regulator IC (IC5701) is
tightly screwed to the heat sink Unit B.
Step 3 Solder pins of the Switch Regulator IC (IC5701) on the
reverse side of SMPS P.C.B..
Special Note: Ensure pins of the Switch Regulator IC (IC5701)
are properly seated and soldered on SMPS P.C.B..
8.30. Replacement of Switch
Regulator Diode (D5702)
• Follow the (Step 1) - (Step 5) of Item 8.4
• Follow the (Step 1) - (Step 12) of Item 8.5
• Follow the (Step 1) - (Step 5) of Item 8.22
• Follow the (Step 1) - (Step 5) of Item 8.28
Step 1 Desolder pins of the Switch Regulator Diode (D5702) on
the reverse side of SMPS P.C.B..
Step 2 Desolder pins of the heat sink Unit B.
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