Replacement Of Switching Regulator Ic (Ic5701) - Panasonic SC-HTB70P Service Manual

11.11. Replacement of Switching Reg-
ulator IC (IC5701)
• Refer to "Disassembly of SMPS and AC Inlet P.C.B.".
11.11.1. Disassembly of Switching Regula-
tor IC (IC5701)
Caution: Handle the SMPS P.C.B. with caution. Avoid
touching the Heatsink Unit A due to it's high temperature
after prolonged use. Touching it may lead to injuries.
Step 1 : Desolder the pins of Switching Regulator IC (IC5701)
on the solder side of SMPS P.C.B..
Step 2 : Remove 1 screw.
Step 3 : Remove the Switching Regulator IC (IC5701) from the
Heatsink Unit A.
11.11.2. Assembly of Switching Regulator
IC (IC5701)
Step 1 : Apply grease on the Heatsink Unit A.
Step 2 : Fix the Switching Regulator IC (IC5701) to the SMPS
P.C.B..
Caution: Ensure the pins of Switching Regulator IC
(IC5701) are inserted and seated properly on the SMPS
P.C.B..
Step 3 : Fix the Switching Regulator IC (IC5701) onto the Heat-
sink Unit A with a screw.
Caution: Ensure the Switching Regulator IC (IC5701) is
tightly screwed to the Heatsink Unit A.
Step 4 : Solder the pins of Switching Regulator IC(IC5701) on
the solder side of SMPS P.C.B..
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