Panasonic SA-BFT800EE / SA-BFT800EEK Service Manual ▷ View online
105
10.28. Disassembly of SMPS P.C.B.
• Refer to “Disassembly of Back Cabinet Assembly”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
Step 1 Detach 10P Cable at the connector (CN2004) on Digital
P.C.B..
P.C.B..
Step 2 Detach 6P FFC at the connector (CN5400) on D-Amp
P.C.B..
P.C.B..
Step 3 Lift up the wire clamper to release 4P wire.
Step 4 Cut 2 Lead Clampers.
Step 4 Cut 2 Lead Clampers.
Step 5 Remove 5 screws.
Step 6 Lift up SMPS P.C.B..
Step 6 Lift up SMPS P.C.B..
Step 7 Desolder Red (TL11) & Black (TL21) wires on AC Inlet
P.C.B..
Step 8 Lift up SMPS P.C.B..
P.C.B..
Step 8 Lift up SMPS P.C.B..
106
10.29. Replacement of Switching Reg-
ulator IC (IC5701)
• Refer to “Disassembly of Back Cabinet Assembly”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS P.C.B.”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS P.C.B.”.
10.29.1. Disassembly of Switching Regula-
tor IC (IC5701)
Step 1 Desolder pins of the Switching Regulator IC (IC5701) on
the solder side of SMPS P.C.B..
the solder side of SMPS P.C.B..
Step 2 Remove 1 screw from the Switching Regulator IC
(IC5701).
Step 3 Remove the Switching Regulator IC (IC5701).
Caution: Avoid touching the Heatsink Unit B 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 18.4) for
location of the part.
(IC5701).
Step 3 Remove the Switching Regulator IC (IC5701).
Caution: Avoid touching the Heatsink Unit B 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 18.4) for
location of the part.
10.29.2. Assembly of Switching Regulator
IC (IC5701)
Step 1 Apply grease to the Heatsink Unit B.
Step 2 Fix the Switching Regulator IC (IC5701) onto the SMPS
P.C.B..
Step 3 Fix and screw the Switching Regulator IC (IC5701) to
the Heatsink Unit B.
Caution: Ensure the Switching Regulator IC (IC5701) is
tightly screwed to the Heatsink Unit B.
Step 2 Fix the Switching Regulator IC (IC5701) onto the SMPS
P.C.B..
Step 3 Fix and screw the Switching Regulator IC (IC5701) to
the Heatsink Unit B.
Caution: Ensure the Switching Regulator IC (IC5701) is
tightly screwed to the Heatsink Unit B.
Step 4 Solder pins of the Switch Regulator IC (IC5701) on the
solder side of SMPS P.C.B..
solder side of SMPS P.C.B..
107
Caution: Ensure pins of the Switching Regulator IC
(IC5701) are properly seated and soldered on SMPS P.C.B..
(IC5701) are properly seated and soldered on SMPS P.C.B..
10.30. Replacement of Rectifier Diode
(D5702)
• Refer to “Disassembly of Back Cabinet Assembly”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS P.C.B.”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS P.C.B.”.
10.30.1. Disassembly of Rectifier Diode
(D5702)
Step 1 Desolder pins of the Rectifier Diode (D5702) on the sol-
der side of SMPS P.C.B..
Step 2 Desolder pins of the Heatsink Unit B.
der side of SMPS P.C.B..
Step 2 Desolder pins of the Heatsink Unit B.
Step 3 Remove 1 screw from the Switching Regulator IC
(IC5701).
Step 4 Remove the Heatsink Unit B together with Rectifier
Diode (D5702).
Step 5 Remove 1 screw from the Rectifier Diode (D5702).
Step 6 Remove the Rectifier Diode (D5702) from the Heatsink
Unit B.
Caution: Avoid touching the Heatsink Unit B 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 18.4) for
location of the part.
(IC5701).
Step 4 Remove the Heatsink Unit B together with Rectifier
Diode (D5702).
Step 5 Remove 1 screw from the Rectifier Diode (D5702).
Step 6 Remove the Rectifier Diode (D5702) from the Heatsink
Unit B.
Caution: Avoid touching the Heatsink Unit B 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 18.4) for
location of the part.
108
10.30.2. 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 Heat-
sink Unit B.
Caution: Ensure the Rectifier Diode (D5702) is tightly
screwed to the Heatsink Unit B.
Step 3 Fix the Heatsink Unit B with Rectifier Diode (D5702)
onto SMPS P.C.B..
Caution: Ensure the Heatsink Unit B with Rectifier Diode
(D5702) are properly seated on SMPS P.C.B..
Step 4 Fix and screw the Switching Regulator IC (IC5701) to
the Heatsink Unit B.
Step 2 Fix and screw the Rectifier Diode (D5702) to the Heat-
sink Unit B.
Caution: Ensure the Rectifier Diode (D5702) is tightly
screwed to the Heatsink Unit B.
Step 3 Fix the Heatsink Unit B with Rectifier Diode (D5702)
onto SMPS P.C.B..
Caution: Ensure the Heatsink Unit B with Rectifier Diode
(D5702) are properly seated on SMPS P.C.B..
Step 4 Fix and screw the Switching Regulator IC (IC5701) to
the Heatsink Unit 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..
side of SMPS P.C.B..
Step 6 Solder pins of the Heatsink Unit B on the solder side of
SMPS P.C.B..
Caution: Ensure pins of the Rectifier Diode (D5702) are
properly seated before soldered onto SMPS P.C.B..
properly seated before soldered onto SMPS P.C.B..
10.31. Replacement of Regulator
Diode (D5802)
• Refer to “Disassembly of Back Cabinet Assembly”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS P.C.B.”.
• Refer to “Disassembly of SMPS Shield Unit”.
• Refer to “Disassembly of Digital Shield”.
• Refer to “Disassembly of Power P.C.B.”.
• Refer to “Disassembly of SMPS P.C.B.”.
10.31.1. Disassembly of Regulator Diode
(D5802)
Step 1 Desolder pins of the Regulator Diode (D5802) on the
solder side of SMPS P.C.B..
Step 2 Desolder pins of the Heatsink Unit A.
solder side of SMPS P.C.B..
Step 2 Desolder pins of the Heatsink Unit A.
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