JVC RX-D301S Service Manual page 13

3.1.15 Removing the volume board
(See Fig.11)
• Remove the top cover and front video board.
(1) From the back side of the main body, remove the five
screws Q attaching the volume board to the rear panel.
(2) Remove the screw R attaching the volume board.
(3) From the top side of the main body, remove the screw S at-
taching the wire holder board and move the wire holder
board with the wires in the direction of the arrow.
(4) Disconnect the connector
from the DSP connect board.
Note:
When removing the volume board, take care not to break
the claw of the connector on it.
(5) Take out the volume board and disconnect the wires from
the connectors (CN661, CN682, CN683) on the forward
side of the volume board.
3.1.16 Removing the OSD board
(See Fig.12) [For Australia]
• Remove the top cover, front video board and volume board.
(1) Remove the solder from the section e to remove the earth
wire.
(2) Remove the screw T attaching the support bracket on the
chassis base.
(3) Disconnect the connectors (CN582, CN584) on the OSD
board in an upward direction.
Note:
When removing the OSD board, take care not to break
the claws of the connectors on it.
(4) Remove the screw U to remove the support bracket from
the OSD board.
3.1.17 Removing the primary board
(See Fig.12)
• Remove the top cover.
Reference:
Remove the tie bands bundling the wires.
(1) Disconnect the wire from the connector
amplifier board.
(2) Disconnect the power cord from the connector
the primary board.
(3) Remove the four screws V attaching the primary board.
(4) Take out the primary board from the main body and remove
the wires from the soldered sections f on the reverse side
of the primary board.
CN681 on the volume board
CN101 on the main
CN120 on
Wire holder board
CN682
CN683
CN661
CN681
Fig.11
Primary board
V T
Chassis base
V
f
CN120
V
Power cord
e
U
CN582
Earth wire
Fig.12
Volume board
S
R
Rear panel
Q
Support bracket
Main amplifier
board
CN101
V
CN584
OSD board
(No.MB479)1-13