Panasonic SA-PT170PH - Replacement of Regulator Diode (D5802)

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Caution: Ensure the Switching Regulator IC (IC5701) is
tightly screwed to the heatsink unit B.
Step 4 Solder pins of the Switching Regulator IC (IC5701) on
the solder side of SMPS P.C.B.
9.19. Replacement of Regulator
Diode (D5802)
9.19.1. Disassembly of Regulator Diode
(D5802)
• Follow (Step 1) to (Step 3) of Item 9.3.
• Follow (Step 1) to (Step 3) of Item 9.6.
• Follow (Step 7) to (Step 10) of Item 9.6.
• Follow (Step 4) to (Step 6) of Item 9.12.
• Follow (Step 1) to (Step 9) of Item 9.17.
Step 1 Desolder pins of the Regulator Diode (D5802) on the
solder side of SMPS P.C.B.
Step 2 Remove 1 screw from the Regulator Diode (D5802).
Step 3 Remove the Regulator Diode (D5802) from the SMPS
P. C .B .
Caution: During replacement of the part, avoid touching
the heatsink. It may lead to injury.
Note: Refer to the diagrams of SMPS P.C.B. (Item 18.5) for
location of the electrical components.
9.19.2. Assembly of Regulator Diode
(D5802)
Step 1 Apply grease to the heatsink unit C.
Step 2 Mount the Regulator Diode (D5802) on SMPS P.C.B.
Caution: Ensure pins of the Regulator Diode (D5802) are
properly seated and soldered on SMPS P.C.B.
Step 3 Fix and screw the Regulator Diode (D5802) to the heat-
sink unit C.