Panasonic SA-PT470EB Service Manual page 40

7.1.3. Part Location
7.1.3.1. SMPS P.C.B.
+30V Detect:
D5807, QR5840,
D5843
Feedback circuit:
IC5801, PC5720,
D5725
Temperature Detect:
D5802, Q5841,
R5842
Fig.1 SMPS P.C.B.
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+18V FAN:
D5805
SMPS P.C.B.