JVC RX-6042S Service Manual page 9

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
the power supply board.
(6) Disconnect the wire from the connector
power transformer board 1.
(7) Disconnect the wires from the connectors CN471,
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.
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)
Wire
protection
board
Tie
band
N
CN241 on
M
L
CN251 on the
Card
CN472 wire
Tie
band
Audio
board
Heat sink
Main board
Q
Relay Power
N N
board transformer
board 1
Main Tie
board band CN241
CN473 CN472 CN492
CN471 Soldered
section b
Fig.11
Fig.12
Heat sink
Main board
Fig.13
Power
supply
board
CN251
CN291
Tie
bands
Parallel
wires
M
Tie
band
Speaker
terminal
board
P
P
Q
(No.MB167)1-9