Panasonic SA-AK270EB Service Manual page 51

Special Note: Ensure pins of the regulator diode (D5801) are
properly seated and soldered on SMPS P.C.B..
9.28. Replacement of Regulator
Diode (D5802)
Follow the (Step 1) - (Step 5) of Item 9.4
Follow the (Step 1) - (Step 7) of Item 9.5
Follow the (Step 1) - (Step 5) of Item 9.19
Follow the (Step 1) - (Step 4) of Item 9.24
Step 1 Desolder pins of the regulator diode (D5802) on the
reverse 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 heat sink
unit C.
Caution: Handle the heat sink 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 19.6.) for
location of the part.
9.28.1. Assembly of Regulator Diode
(D5802)
Step 1 Apply grease to the heat sink unit C.
Step 2 Fix and screw the regulator diode (D5802) to the heat
sink unit C.
Special Note: Ensure the regulator diode (D5802) is tightly
screwed to the heat sink unit C.
Step 3 Solder pins of the regulator diode (D5802) on the
reverse side of SMPS P.C.B..
Special Note: Ensure pins of the regulator diode (D5802) are
properly seated and soldered on SMPS P.C.B..
9.29. Replacement of Regulator
Diode (D5803)
Follow the (Step 1) - (Step 5) of Item 9.4
Follow the (Step 1) - (Step 7) of Item 9.5
Follow the (Step 1) - (Step 5) of Item 9.19
Follow the (Step 1) - (Step 4) of Item 9.24
Step 1 Desolder pins of the regulator diode (D5803) on the
reverse side of SMPS P.C.B..
51
SA-AK270EB / SA-AK270EG