Panasonic SA-AK570PL Servise Manual page 47

Note: Ensure the Switch Transistor (Q2751) is tightly screwed
to the heat sink.
8.28. Disassembly of SMPS P.C.B.
• 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 9.22
Step 1 Detach 8P wire at connector (CN5802) at SMPS P.C.B..
Step 2 Remove 4 screws at SMPS P.C.B..
Step 3 Lift up the SMPS P.C.B. as arrow shown.
Step 4 Flip the SMPS P.C.B. and desolder 2 wire pins (red and
black).
• For GCP Only
Step 5 Desolder 2 wire pin (White and blue).
Note: During reassembling procedures, ensure the P.C.B. is
seated properly at the locator.
8.29. Replacement of Switch
Regulator IC (IC5701)
• 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 IC (IC5701) on
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SA-AK570PL / SA-AK570GCP