JVC RX-8040B Service Manual page 9

3.8 Removing the speaker board
(See Fig.9)
• Prior to performing the following procedures, remove the top
cover, rear panel.
(1) From the top side of the main body, remove the tie band
bundling the wires.
(2) Disconnect the wires from the connectors
CN814) on the main board.
(3) Disconnect the parallel wire from the connectors
and CN932) on the micon board.
(4) Take out the speaker board in the direction of the arrow.
3.9 Removing the relay board and main board
(See Fig.10)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, remove the tie bands
bundling the card wire and wires.
(2) Remove the tie band and wire protection board bundling
the card wire.
(3) Disconnect the wire from the connector
er transformer board 1.
(4) Disconnect the relay board from the connectors
CN81) on the power supply board and micon board.
(5) Disconnect the wire from the connector
board, and take out this board.
(6) Disconnect the wires from the connectors (CN723, CN813,
CN814, CN831 and CN881) on the main board.
(7) Disconnect the wire from the connector
ter board.
(8) Disconnect the wire from the connector
board (L).
(9) Disconnect the wire from the connector
round back board.
(10) Disconnect the wire from the connector
board (R).
(11) Remove the screw M, six screws N and two screws P at-
taching the main board.
(12) Take out the main board.
Micon board
and
(CN813
(CN931
CN814
CN811 on the pow-
Tie band
Wire
(CN71 and
protection
board
CN262 on the relay
Card wire
Main
board
CN722 on the cen-
Tie
band
CN714 on the front
CN723
CN717 on the sur-
CN814
Micon
CN719 on the front
board
Main board
CN813
Fig.9
Surround back board
Front board(L)
Front board(R)
CN717 Tie band
N
N
P
P
CN719 CN831 CN714
CN881 CN813
Fig.10
Tie band
CN931 CN932
Speaker board
Center board
CN71 CN811
N
Power
supply
board
Power
transformer
board 1
Tie bands
M
Relay
board
CN262
CN81
CN722
(No.MB303)1-9