Panasonic SA-BTT770EG / SA-BTT770EP / SA-BTT775EB / SA-BTT775EE / SA-BTT775GN / SC-BTT775EEK Service Manual ▷ View online
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Step 4 Lift up the AC Inlet P.C.B. according to arrow shown.
Step 5 Flip the AC Inlet P.C.B..
Step 6 Desolder Red Wire (TL10) & Black Wire (TL20) on the
AC Inlet P.C.B..
Step 7 Remove the AC Inlet P.C.B..
Step 6 Desolder Red Wire (TL10) & Black Wire (TL20) on the
AC Inlet P.C.B..
Step 7 Remove the AC Inlet P.C.B..
Caution: During assembling, ensure that AC Inlet P.C.B. is
seated properly located & fully seated onto Bottom Chas-
sis.
seated properly located & fully seated onto Bottom Chas-
sis.
Caution: During assembling, replace the AC IN PC Sheet
Unit if torn.
Unit if torn.
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10.17. Disassembly of D-Amp P.C.B.
• Refer to “Disassembly of Top Cabinet”.
Step 1 Detach 4P Cable at the connector (CN5400) on D-Amp
P.C.B..
Step 2 Detach 18P FFC at the connector (CN5402) on D-Amp
P.C.B..
Step 3 Lift Up the Lead Clamper.
Step 4 Detach 3P Cable at the connector (CN5401) on D-Amp
P.C.B..
Step 5 Remove 2 screws.
Step 6 Remove 3 screws.
Step 7 Release the tab of the right side of the Rear Panel in the
direction of arrow.
Step 7 Release the tab of the right side of the Rear Panel in the
direction of arrow.
Step 8 Remove D-Amp P.C.B. according to direction of arrow
shown.
shown.
99
Caution: During assembling, ensure that D-Amp P.C.B. is
properly located & fully seated onto Bottom Chassis
before screwing.
properly located & fully seated onto Bottom Chassis
before screwing.
10.18. Replacement of Digital Ampli-
fier IC (IC5100/IC5200/IC5300)
• Refer to “Disassembly of Top Cabinet”.
• Refer to “Disassembly of D-Amp P.C.B.”.
• Refer to “Disassembly of D-Amp P.C.B.”.
10.18.1. Disassembly of Digital Amplifier IC
(IC5100/IC5200/IC5300)
Caution: Handle the D-Amp P.C.B. with caution due to its
high temperature after prolonged use.
Step 1 Place D-Amp P.C.B. on an insulated material.
Step 2 Remove 4 screws.
high temperature after prolonged use.
Step 1 Place D-Amp P.C.B. on an insulated material.
Step 2 Remove 4 screws.
Step 3 Lift up D-Amp P.C.B. as arrow shown.
Caution: Keep the Heatsink Spacer in safe place. Avoid
denting it, place it back during assembling.
Caution: Keep the Heatsink Spacer in safe place. Avoid
denting it, place it back during assembling.
Step 4 Desolder the pins of Digital Amplifier IC (IC5100).
Step 5 Remove Digital Amplifier IC (IC5100).
Note 1: For disassembling of Digital Amplifier IC (IC5200) &
(IC5300), repeat the (Step 1) to (Step 5) of 10.18.1.
Note 2: Refer to diagram of D-Amp P.C.B. (item 18.4) for loca-
tion of part.
Step 5 Remove Digital Amplifier IC (IC5100).
Note 1: For disassembling of Digital Amplifier IC (IC5200) &
(IC5300), repeat the (Step 1) to (Step 5) of 10.18.1.
Note 2: Refer to diagram of D-Amp P.C.B. (item 18.4) for loca-
tion of part.
100
10.18.2. Assembly of Digital Amplifier IC
(IC5100/IC5200/IC5300)
Step 1 Fix the Digital Amplifier IC (IC5100) on to the D-Amp
P.C.B..
Step 2 Solder pins of Digital Amplifier IC (IC5100).
Caution: Ensure that the pins of Digital Amplifier IC
(IC5100) is positioned correctly on D-Amp P.C.B. before
soldering.
Step 3 Apply grease on the top side of the Digital Amplifier IC
(IC5100).
P.C.B..
Step 2 Solder pins of Digital Amplifier IC (IC5100).
Caution: Ensure that the pins of Digital Amplifier IC
(IC5100) is positioned correctly on D-Amp P.C.B. before
soldering.
Step 3 Apply grease on the top side of the Digital Amplifier IC
(IC5100).
Step 4 Upset the D-Amp P.C.B..
Caution: During assembling, ensure that heatsink spacer
are properly located & fully seated onto D-Amp Heatsink.
Caution: During assembling, ensure that heatsink spacer
are properly located & fully seated onto D-Amp Heatsink.
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