JVC RX-F31S, Руководство по обслуживанию

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1-12 (No.MB449)
3.1.20 Removing the main amplifier board
(See Figs.15 and 16)
• Remove the top cover, tuner, DSP board, master clock board,
gate drive-2 board, S.S. setup board, gate drive-1 board and
vol IC board.
(1) Remove the tie bands bundling the wires. (See Fig.15.)
Reference:
• After reassembling, bundle the wires with the new tie
bands as before. (See Fig.15.)
• After reassembling, fix the support board with the new
tie bands as before. (See Fig.15.)
(2) Disconnect the parallel wires from the connectors ( CN701 ,
CN801 ) on the speaker terminal board. (See Fig.15.)
(3) Disconnect the parallel wire from the connector CN301 on
the speaker relay board. (See Fig.15.)
(4) Disconnect the parallel wire from the connector CN509 on
the input mother board. (See Fig.15.)
(5) Disconnect the wires from the connectors ( CN530 , CN540 )
on the input mother board. (See Fig.15.)
(6) Disconnect the wire from the connector CN218 on the pri-
mary board. (See Fig.15.)
(7) Disconnect the parallel wire from the connector CN412 on
the regulator connect board. (See Fig.16.)
(8) Disconnect the parallel wire from the connector CN216 on
the headphone board. (See Fig.16.)
(9) Disconnect the wires from the connectors ( CN201 , CN702 )
on the main amplifier board. (See Fig.16.)
(10) Remove the four screws Q and three screws R and take
out the main amplifier board with the regulator and regula-
tor connect boards from the main body. (See Fig.16.)
Fig.15
Fig.16
Input mother board
Support board
Primary board
Speaker terminal board
Speaker relay board
CN801
CN701
CN301
CN218
CN509
CN530
CN540
Tie bands
Tie bands
Tie bands
Tie bands
CN201
CN412
CN702
Main amplifier board
R R
R
Q
Regulator connect board
Q
CN216
Headphone board