Panasonic SA-BX500EB / SA-BX500EE / SA-BX500EG Service Manual ▷ View online
Caution: Insulate Speaker P.C.B. from other parts insulating
material (e.g.: plastic).
material (e.g.: plastic).
Special Note: During reassembling procedures, ensure the
P.C.B. is seated properly at the locators.
P.C.B. is seated properly at the locators.
7.7. Replacement of Digital Amp IC
(IC5000) of D-Amp B (3CH)
P.C.B.
P.C.B.
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Follow (Step 1) to (Step 4) of Item 7.3.
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Follow (Step 1) to (Step 3) of Item 7.5.
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Follow (Step 1) to (Step 8) of Item 7.6.
Step 1 Detach 8P cable at the connector (CN5500) on D-Amp
B (3CH) P.C.B.
B (3CH) P.C.B.
Step 2 Detach 17P FFC cable at the connector (CN5050) on D-
Amp B (3CH) P.C.B.
Amp B (3CH) P.C.B.
Step 3 Detach 9P cable at the connector (JW4603) on Speaker
P.C.B.
Step 4 Remove the D-Amp B (3CH) P.C.B. as arrow shown.
Step 5 Desolder pins of the digital amp IC (IC5000) on the back
side of D-Amp P.C.B.
side of D-Amp P.C.B.
Step 6 Remove 1 screw from the top of the heatsink unit A.
Step 7 Remove the TR spring in the direction of the arrow.
Step 8 Remove the digital amp IC (IC5000) from the heatsink
unit A.
unit A.
Caution: Handle the heatsink unit A with caution due to its high
temperature after prolonged use. Touching it may lead to
injuries.
temperature after prolonged use. Touching it may lead to
injuries.
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SA-BX500EB / SA-BX500EE / SA-BX500EG
Special Note: For replacement of IC5200, IC5300, repeat the
(Step 1) to (Step 8). Refer to the diagrams of D-Amp B (3CH)
P.C.B. (Item 14.8) for location of the parts.
(Step 1) to (Step 8). Refer to the diagrams of D-Amp B (3CH)
P.C.B. (Item 14.8) for location of the parts.
7.8. Disassembly and checking of
SMPS & AC Inlet P.C.B.
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Follow (Step 1) to (Step 4) of Item 7.3.
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Follow (Step 1) to (Step 3) of Item 7.5.
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Follow (Step 1) to (Step 10) of Item 7.6.
Step 1 Remove 2 screws on DSP P.C.B.
Step 2 Move aside DSP P.C.B. as arrow shown.
Step 3 Flip D-Amp P.C.B. as arrow shown.
Step 4 Connect extension cable REEX0930 (17P cable from
CN2808 to CN5050).
CN2808 to CN5050).
Step 5 Remove 5 screws.
Step 6 Move up the support bar as arrow shown and beware of
the catches.
the catches.
Step 7 Remove 6 screws on SMPS and AC Inlet P.C.B..
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SA-BX500EB / SA-BX500EE / SA-BX500EG
Step 8 Connect extension cable REXX0651 (8P cable from
H5801 to CN5500).
H5801 to CN5500).
Step 9 Remove AC Inlet shield plate unit.
Step 10 Remove P.C.B. bracket.
Step 11 Remove SMPS and AC Inlet P.C.B. as arrow shown.
Caution: During reassembling procedures, ensure the
SMPS and AC Inlet P.C.B. is seated properly under the
blocks.
SMPS and AC Inlet P.C.B. is seated properly under the
blocks.
Step 12 Proceed to check the SMPS and AC Inlet P.C.B.
Special Note: During reassembling procedures, ensure the
P.C.B. is seated properly at the locators.
P.C.B. is seated properly at the locators.
7.9. Replacement of Switch
Regulator IC (IC5701)
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Follow (Step 1) to (Step 4) of Item 7.3.
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Follow (Step 1) to (Step 3) of Item 7.5.
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Follow (Step 1) to (Step 10) of Item 7.6.
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Follow (Step 1) to (Step 6) of Item 7.8.
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Follow (Step 9) to (Step 11) of Item 7.8.
Step 1 Desolder pins of the switch regulator IC (IC5701) on the
reverse side of SMPS P.C.B.
reverse side of SMPS P.C.B.
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SA-BX500EB / SA-BX500EE / SA-BX500EG
Step 2 Remove 1 screw from the switch regulator IC (IC5701).
Step 3 Remove the switch regulator IC (IC5701) from the
heatsink unit B.
heatsink unit B.
Caution: Handle the heatsink unit B with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
high temperature after prolonged use. Touching it may
lead to injuries.
Note: Refer to the diagrams of SMPS P.C.B. (Item 20.7.) for
location of the part.
location of the part.
7.9.1. Assembly of Switch Regulator IC
(IC5701)
Step 1 Apply grease to the heatsink unit B.
Step 2 Fix and screw the switch regulator IC (IC5701) to the
heatsink unit B.
heatsink unit B.
Special Note: Ensure the switch regulator IC (IC5701) is tightly
screwed to the heatsink unit B.
screwed to the heatsink unit B.
Step 3 Solder pins of the switch regulator IC (IC5701) on the
reverse side of SMPS P.C.B.
reverse side of SMPS P.C.B.
Special Note: Ensure pins of the switch regulator IC (IC5701)
are properly seated and soldered on SMPS P.C.B.
are properly seated and soldered on SMPS P.C.B.
7.10. Replacement of Switch
Regulator Diode (D5702)
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Follow (Step 1) to (Step 4) of Item 7.3.
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Follow (Step 1) to (Step 3) of Item 7.5.
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Follow (Step 1) to (Step 10) of Item 7.6.
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Follow (Step 1) to (Step 6) of Item 7.8.
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Follow (Step 9) to (Step 11) of Item 7.8.
Step 1 Desolder pins of the switch regulator diode (D5702) on
the reverse side of SMPS P.C.B.
the reverse side of SMPS P.C.B.
Step 2 Desolder pins of the heatsink unit B.
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SA-BX500EB / SA-BX500EE / SA-BX500EG
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