Panasonic SU-HTB570EB / SU-HTB570EG / SB-HTB570EG / SB-HWA570EB / SB-HWA570EG / SC-HTB570EB / SC-HTB570EG / SC-HTB570EGS Service Manual ▷ View online
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11.3.2.2. Standing Position
11.3.3.
Active Subwoofer (SB-HWA570)
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11.4. Disassembly of Main Unit (SU-HTB570)
11.4.1.
Disassembly of Top Cabinet
Step 1 : Remove 2 screws.
Step 2 : Remove 3 screws.
Step 3 : Slightly pull outwards the Top Cabinet for both sides.
Step 4 : Slightly lift up the Top Cabinet as shown.
Step 5 : From within the Top Cabinet, gently push upwards to
release the catches in sequence as shown.
Step 5 : From within the Top Cabinet, gently push upwards to
release the catches in sequence as shown.
Caution: During assembling, ensure that the edges of Top
Cabinet is inserted properly into the Front Panel Block.
Cabinet is inserted properly into the Front Panel Block.
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11.4.2.
Disassembly of SMPS and AC Inlet
P.C.B.
P.C.B.
• Refer to “Disassembly of Top Cabinet”.
Step 1 : Detach 10P Cable Wire at the connector (CN2004) on
the Main P.C.B..
the Main P.C.B..
Step 2 : Remove 1 screw.
Step 3 : Lift up the AC Inlet P.C.B..
Caution: During assembling, ensure that the AC Inlet
P.C.B. is inserted properly into the guides at the Rear
Panel.
Step 3 : Lift up the AC Inlet P.C.B..
Caution: During assembling, ensure that the AC Inlet
P.C.B. is inserted properly into the guides at the Rear
Panel.
Step 4 : Remove 4 screws.
Step 5 : Slightly lift up to remove the SMPS and AC Inlet
P.C.B..
P.C.B..
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11.4.3.
Replacement of Switching Regula-
tor IC (IC5701)
tor IC (IC5701)
• Refer to “Disassembly of SMPS and AC Inlet P.C.B.”.
11.4.3.1. Disassembly of Switching Regu-
lator 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.
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..
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.
Step 3 : Remove the Switching Regulator IC (IC5701) from the
Heatsink Unit A.
11.4.3.2. 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 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..
the solder side of SMPS P.C.B..
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