Panasonic SA-BTT460GS / SA-BTT460PH / SA-BTT480EE / SA-BTT480GS / SC-BTT480EEK Service Manual ▷ View online
65
Step 3 Detach 23P Bridge connector at the connector
(CN2303) on Digital P.C.B..
Step 4 Detach 4P Cable at the connector (CN5400) on Damp
P.C.B..
(CN2303) on Digital P.C.B..
Step 4 Detach 4P Cable at the connector (CN5400) on Damp
P.C.B..
Step 5 Remove 2 screws.
Step 6 Lift up to remove the Damp P.C.B..
Step 6 Lift up to remove the Damp P.C.B..
Caution: During assembling, ensure that the Damp P.C.B.
is properly located and seated onto the bottom chassis.
is properly located and seated onto the bottom chassis.
66
12.13. Replacement of Digital Ampli-
fier IC (IC5100/IC5200/IC5300)
• Refer to “Disassembly of Top Cabinet”.
• Refer to “Disassembly of Damp P.C.B.”.
• Refer to “Disassembly of Damp P.C.B.”.
12.13.1. Disassembly of Digital Amplifier IC
(IC5100/IC5200/IC5300)
Caution: Handle the Damp P.C.B. with caution due to it's
high temperature after prolonged use. Touching it may
lead to injuries.
Step 1 Place Damp P.C.B. on an insulated material.
Step 2 Remove 4 screws.
high temperature after prolonged use. Touching it may
lead to injuries.
Step 1 Place Damp P.C.B. on an insulated material.
Step 2 Remove 4 screws.
Step 3 Lift up the Damp P.C.B. as arrow shown.
Caution: Keep the Heatsink Spacers in safe place. Avoid
denting it, place it back during assembling.
Caution: Keep the Heatsink Spacers in safe place. Avoid
denting it, place it back during assembling.
Step 4 Desolder the pins of Digital Amplifier IC.
Step 5 Remove Digital Amplifier IC.
Step 5 Remove Digital Amplifier IC.
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12.13.2. Assembly of Digital Amplifier IC
(IC5100/IC5200/IC5300)
Step 1 Fix the Digital Amplifier IC onto the Damp P.C.B..
Step 2 Solder the pins of Digital Amplifier IC.
Caution: Ensure that the pins of Digital Amplifier IC is posi-
tioned correctly on Damp P.C.B. before soldering.
Step 2 Solder the pins of Digital Amplifier IC.
Caution: Ensure that the pins of Digital Amplifier IC is posi-
tioned correctly on Damp P.C.B. before soldering.
Step 3 Fix Heatsink spacers onto Damp Heatsink.
Caution: Ensure that Heatsink Spacers are properly
located and seated flatly onto Damp Heatsink.
Step 4 Apply grease to the Damp Heatsink as indicate in the
diagram.
Caution: Ensure the Grease applied thickness is about
0.2mm.
Caution: Ensure that Heatsink Spacers are properly
located and seated flatly onto Damp Heatsink.
Step 4 Apply grease to the Damp Heatsink as indicate in the
diagram.
Caution: Ensure the Grease applied thickness is about
0.2mm.
Step 5 Upset the Damp P.C.B. and place it on an insulated
material.
Step 6 Fix 4 screws.
material.
Step 6 Fix 4 screws.
68
12.14. Disassembly of Voltage Selec-
tor P.C.B., AC Inlet P.C.B. and
SMPS P.C.B.
SMPS P.C.B.
• Refer to “Disassembly of Top Cabinet”
Step 1 Remove 2 screws.
Step 2 Release the Blue Wire (TL30) and White Wire (TL31)
from Wire Clamper.
Step 3 Lift up to remove the Voltage Selector P.C.B..
from Wire Clamper.
Step 3 Lift up to remove the Voltage Selector P.C.B..
Caution: During assembling, ensure that the Voltage Selec-
tor P.C.B. is catched onto the Rear Panel properly.
tor P.C.B. is catched onto the Rear Panel properly.
Step 4 Remove 1 screw.
Step 5 Remove 2 screws.
Step 6 Lift up to remove the AC Inlet P.C.B..
Step 6 Lift up to remove the AC Inlet P.C.B..
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