Panasonic SA-PT470EB - Replacement of Regulator Diode (D5801)

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9.22.2. Assembly of Rectifier Diode
(D5702)
Step 1 Apply grease to the heatsink unit B.
Step 2 Fix and screw the rectifier diode (D5702) to the heatsink
unit B.
Step 3 Mount the heatsink unit B with rectifier diode (D5702) on
SMPS P.C.B. in the direction of arrows.
Caution: Ensure the rectifier diode (D5702) is tightly
screwed to the heatsink unit B.
Step 4 Fix and screw the switching regulator IC (IC5701) to the
heatsink unit B
Caution: Ensure the heatsink unit B with rectifier diode
(D5702) are properly seated on SMPS P.C.B.
Step 5 Solder pins of the rectifier diode (D5702) on the solder
side of SMPS P.C.B.
Step 6 Solder pins of the heatsink unit B on the solder side of
SMPS P.C.B.
9.23. Replacement of Regulator
Diode (D5801)
9.23.1. Disassembly of Regulator Diode
(D5801)
• Follow (Step 1) to (Step 3) of Item 9.3.
• Follow (Step 1) to (Step 10) of Item 9.6.
• Follow (Step 11) to (Step 13) of Item 9.12.
• Follow (Step 1) to (Step 7) of Item 9.19.
Step 1 Desolder pins of the regulator diode (D5801) on the sol-
der side of SMPS P.C.B.
Step 2 Remove 1 screw from the regulator diode (D5801).
Step 3 Remove the regulator diode (D5801) from the SMPS
P. C .B .
Caution: Handle the heatsink unit C 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 18.5) for
location of the electrical components.