JVC RX-D302B Service Manual page 13

3.1.16 Removing the OSD board
(See Fig.12)
• Remove the top cover, front video board and volume board.
(1) Remove the solder from the section j to remove the earth
wire.
(2) Remove the screw T attaching the support bracket on the
chassis base.
(3) Disconnect the OSD board from the connect 1 board and
connect 2 board while releasing the claws (k, m) of the con-
nectors (CN582, CN584) on the OSD board.
Note:
When releasing the claws (k, m), take care not to break
them.
(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, front video board, volume board and
OSD board.
(1) From the top side of the main body, remove the tie bands
and disconnect the wire from the connector
main amplifier board.
Reference:
After connecting the wire, bundle the wires with the new
tie bands as before.
(2) Disconnect the power cord from the connector
the primary board.
(3) Remove the three screws V and screw V' attaching the pri-
mary board.
Reference:
When attaching the screw V', attach the wire holder with
it as before.
(4) Take out the primary board from the main body and remove
the wires from the soldered sections n on the reverse side
of the primary board.
3.1.18 Removing the speaker terminal 1 and speaker terminal 2 boards
(See Fig. 13)
• Remove the top cover and rear panel.
Reference:
Remove the tuner and subwoofer board as required.
(1) From the top side of the main body, disconnect the wires
from the connectors (CN265, CN465) on the speaker ter-
minal 1 board.
(2) Take out the speaker terminal 1 board from the main body.
(3) Disconnect the wires from the connectors (CN209, CN262)
on the speaker terminal 2 board.
(4) Take out the speaker terminal 2 board from the main body.
Chassis base
Wire holder
CN120
Power cord
CN10 on the
k
Connect 1
CN120 on
board
CN262
Speaker terminal 2 board
Primary board Support bracket
V T
V'
n
V
j
OSD
Earth
board
wire
CN582
U
OSD
board
Fig.12
CN209 CN465
CN265
Speaker terminal 1 board
Fig.13
Main amplifier
board
CN10
Tie bands
V
CN584
OSD
m
board
Connect 2
board
(No.MB383)1-13