DOWNLOAD Panasonic SA-BTT270EB / SA-BTT270EE / SA-BTT270EG / SA-BTT270EP / SA-BTT270GN / SC-BTT270EEK Service Manual ↓ Size: 18.43 MB | Pages: 127 in PDF or view online for FREE

Model
SA-BTT270EB SA-BTT270EE SA-BTT270EG SA-BTT270EP SA-BTT270GN SC-BTT270EEK
Pages
127
Size
18.43 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / BLU-RAY DISC HOME THEATER SOUND SYSTEM
File
sa-btt270eb-sa-btt270ee-sa-btt270eg-sa-btt270ep-sa.pdf
Date
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Panasonic SA-BTT270EB / SA-BTT270EE / SA-BTT270EG / SA-BTT270EP / SA-BTT270GN / SC-BTT270EEK Service Manual ▷ View online

97
10.20. Replacement of Switching Reg-
ulator IC (IC5701)
• Refer to “Disassembly of Top Cabinet”.
• Refer to “Disassembly of SMPS P.C.B.”.
10.20.1. Disassembly of Switching Regula-
tor IC (IC5701)
Step 1 Place SMPS P.C.B. on an insulated material.
Step 2 Desolder pins of the Switching Regulator IC (IC5701) on
the solder side of SMPS P.C.B..
Step 3 Desolder pins of the Rectifier Diode (D5702) on the sol-
der side of SMPS P.C.B..
Step 4 Desolder pins of the Heatsink A.
Step 5 Remove the Switching Regulator Unit in the direction of
arrow.
Caution: Avoid touching the Switching Regulator Unit due 
to its high temperature after prolonged use. Touching it 
may lead to injuries.
Step 6 Remove 1 screw from the Switching Regulator IC
(IC5701).
Step 7 Remove the Switching Regulator IC (IC5701) from the
Heatsink A.
Note: Refer to the diagrams of SMPS P.C.B. (Item 18.4) for
location of the part.
98
10.20.2. Assembly of Switching Regulator
IC (IC5701)
Step 1 Apply Grease to the back of Switching Regulator IC
(IC5701).
Step 2 Fix & screw the Switching Regulator IC (IC5701) to the
Switching Regulator Unit.
Caution: Ensure that the Switching Regulator IC (IC5701) is 
properly fixed & fully screwed onto Heatsink A.
Step 3 Fix the Switching Regulator Unit onto SMPS P.C.B..
Caution: Ensure that Switching Regulator Unit is properly 
seated on SMPS P.C.B..
Step 4 Solder pins of the Switching Regulator IC (IC5701) on
the solder side of 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 A.
99
10.21. Replacement of Rectifier Diode 
(D5702)
• Refer to “Disassembly of Top Cabinet”.
• Refer to “Disassembly of SMPS P.C.B.”.
10.21.1. Disassembly of Rectifier Diode
(D5702)
Step 1 Place SMPS P.C.B. on an insulated material.
Step 2 Desolder pins of the Switching Regulator IC (IC5701) on
the solder side of SMPS P.C.B..
Step 3 Desolder pins of the Rectifier Diode (D5702) on the sol-
der side of SMPS P.C.B..
Step 4 Desolder pins of the Heatsink A.
Step 5 Remove the Switching Regulator Unit in the direction of
arrow.
Caution: Avoid touching the Switching Regulator Unit due 
to its high temperature after prolonged use. Touching it 
may lead to injuries.
Step 6 Remove 1 screw from the Rectifier Diode (D5702).
Step 7 Remove Rectifier Diode (D5702) from the Heatsink A.
Note:  Refer to the diagrams of SMPS P.C.B. (Item 18.4) for
location of the part.
100
10.21.2. Assembly of Rectifier Diode
(D5702)
Step 1 Apply Grease to the back of Rectifier Diode (D5702).
Step 2 Fix & screw the Rectifier Diode (D5702) to the Heatsink
A.
Caution: Ensure that Rectifier Diode (D5702) is properly 
fixed & screwed onto Switching Regulator Unit.
Step 3 Fix the Switching Regulator Unit onto SMPS P.C.B..
Caution: Ensure that Switching Regulator Unit is properly 
seated on SMPS P.C.B..
Step 4 Solder pins of the Switching Regulator IC (IC5701) on
the solder side of 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 A.
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