JVC RX-7040B, Service Manual

Page: 10 / 71

1-10 (No.MB170)
3.10 Removing the center board, surround back board, front boards (L/R) and surround boards (L/R)
(See Figs.10 and 12)
• Prior to performing the following procedures, remove the top
cover and main board.
(1) From the reverse side of the main board, remove the two
screws P attaching the main board to the heat sink. (See
Fig.10)
(2) Disconnect the connectors ( CN701 to CN706 ) on the main
board, remove the main board. (See Fig.10)
(3) Remove the two screws Q attaching the center board. (See
Fig.12)
(4) Remove the two screws Q attaching the front board(L).
(See Fig.12)
(5) Remove the two screws Q attaching the surround back
board. (See Fig.12)
(6) Remove the two screws Q attaching the front board(R).
(See Fig.12)
(7) Remove the two screws Q attaching the surround board(L).
(See Fig.12)
(8) Remove the two screws Q attaching the surround
board(R). (See Fig.12)
Fig.12
3.11 Removing the power transformer
(See Fig.13)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, remove the tie band
bundling the wires.
(2) Disconnect the wire from the connectors ( CN55 , CN811 )
on the power transformer board 1.
(3) Remove the solders from the soldered sections a on the
power transformer board 2.
(4) Remove the four screws R attaching the power transform-
er.
3.12 Removing the power/fuse board
(See Fig.13)
• Prior to performing the following procedures, remove the top
cover.
(1) From the back and top sides of the main body, remove the
screw S and screw T attaching the power/fuse board.
(2) Remove the solders from the soldered sections b attaching
the power cord.
(3) From the reverse side of the power/fuse board, remove the
solders from the soldered sections c attaching the wires.
Fig.13
Surround board(R)
Q Q Q Q Q Q
Surround board(L)
Front board(R)
Surround back board
Front board(L)
Center board
Tie band
CN811 CN55
Power
transformer
board 1
Power
transformer
board 2
Soldered
sections
a
R R
Power
transformer
S
T
Power/fuse board
Soldered
sections
b
Power cord
Soldered sections c