JVC RX-6040B, Service Manual

Page: 10 / 63

1-10 (No.MB159)
3.9 Removing the main board
(See Fig.11)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main body, remove the tie bands
fixing the wires.
(2) Remove the tie band and wire protection board fixing the
card wire.
(3) Remove the solders from the soldered section b on the
speaker terminal board attaching the parallel wires.
(4) Disconnect the relay board from the connectors ( CN291 ,
CN491 ) on the power supply board and audio board.
(5) Disconnect the parallel wire from the connector CN241 on
the power supply board.
(6) Disconnect the wire from the connector CN251 on the
power transformer board 1.
(7) Disconnect the wires from the connectors CN471 , CN472
and CN473 on the audio board.
(8) Remove the screw L , two screws M and four screws N
attaching the main board.
(9) Take out the main board.
Fig.11
3.10 Removing the heat sink
(See Figs.12 and 13)
• Prior to performing the following procedure, remove the top
cover and main board.
(1) Remove the ten screws P attaching the heat sink. (See
Fig.12)
(2) From the reverse side of the main board, remove the two
screws Q attaching the heat sink. (See Fig.13)
Fig.12
Fig.13
M
N
Soldered
section
b
Power
transformer
board 1
CN241
Power
supply
board
Tie
band
Wire
protection
board
Card
wire
CN251
Speaker
terminal
board
CN492
Tie
bands
Tie
band
Tie
band
CN291
CN472
CN471
CN473
Audio
board
Parallel
wires
Relay
board
N
N
M
L
Main
board
P
P
Heat sink
Main board
Heat sink
Main board
Q
Q