JVC RX-D301S Service Manual page 17

3.1.24 Removing the main amplifier board
(See Figs.19 and 20)
• Remove the top cover, tuner, front video board, DCDC control
board, PWM modulation 1 board, PWM modulation 2 board,
volume board, OSD connect 1 board and master clock board.
(1) Disconnect the wire from the connector
speaker terminal 1 board. (See Fig.19.)
(2) Disconnect the wire from the connector
speaker terminal 2 board. (See Fig.19.)
Reference:
Remove the tie bands bundling the wires.
(3) Disconnect the wires from the connectors (CN101, CN103,
CN106, CN111, CN351) on the main amplifier board. (See
Fig.19.)
(4) Disconnect the card wire from the connector
main amplifier board. (See Fig.19.)
(5) Disconnect the wires from the connectors (CN530, CN531)
on the input board. (See Fig.20.)
(6) Disconnect the parallel wire from the connector
the input board. (See Fig.20.)
(7) Remove the four screws Z and two screws AA. (See
Fig.20.)
(8) Take out the main amplifier board with the regulator board
from the main body. (See Fig.20.)
CN265 on the
CN262 on the
CN102 on the
CN540 on
Z
Input board
CN106
Main amplifier board
CN101
CN102
CN103
CN111
CN262
Speaker terminal 2 board
Speaker terminal 1 board
Fig.19
Regulator board
Main amplifier board
AA
CN531
CN540
CN530
Fig.20
CN351
CN265
Z
Z
(No.MB479)1-17