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RX-7520VBK
Removing the audio board
Prior to performing the following procedure, remove
the top cover and the rear panel.
1.
Disconnect the card wire from connector CN402 on
the audio board.
2.
Disconnect the relay board from the audio board and
the power supply board. (CN291, CN491)
3.
Disconnect the harness from connector CN471,
CN472, CN473.
4.
Remove the three screws G
board assembly.
5.
Remove the screw H
assembly.
Removing the main board
Prior to performing the following procedure, remove
the top cover, the rear panel and audio board.
1.
Disconnect the harness from connector CN241 and
CN203 on the power supply board respectively.
2.
Disconnect the harness from connector CN251 on
the power transformer board .
3.
Remove the four screws I and the two screws J
attaching the main board.
Removing the Heat sink
Prior to performing the following procedure, remove
the top cover and main board.
1.
Remove the two screws K attaching the heat sink to
the reverse side of main board.
2.
Disconnect the for connectors with each amp. board,
and remove the main board.
3.
Remove the four screws M and ten screws L
attaching the heat sink.
L
Heat sink
M
1-6
(See Fig.10)
attaching the audio
attaching the audio board
(See Fig.11)
(See Fig.12 to 14)
L
L
M
Fig.14
CN473
G
CN402
G
G
Audio board
CN472
CN471
Fig.10
I
J
I
Main
board
I
K
Fig.12
Rear Lch amp. board
Heat sink
Rear Rch amp. board
Main board
CN802
CN801
CN302
Relay board
power
supply
supply
y
y
board
board
CN291
Power
transformer
Power / Fuse
board
H
CN491
I
CN241
J
CN251
CN203
Fig.11
K
Main board
rear side
Front Rch amp. board
Front Lch amp. board
Center amp. board
CN901
CN301
Fig.13
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