JVC RX-D302B Service Manual page 11

3.1.12 Removing the PWM modulation 1 board
(See Fig.9)
• Remove the top cover.
(1) From the top side of the main body, remove the tie band
bundling the wires.
Reference:
After reassembling, bundle the wires with a new tie band
as before.
(2) Disconnect the wire from the connector
PWM modulation 2 board.
(3) Disconnect the wires from the connectors (CN311, CN312,
CN313) on the PWM modulation 1 board.
(4) Disconnect the PWM modulation 1 board from the main
amplifier board in an upward direction while releasing the
claw f of the connector
Note:
When releasing the claw f, take care not to break it.
3.1.13 Removing the PWM modulation 2 board
(See Fig.9)
• Remove the top cover.
(1) From the top side of the main body, disconnect the wires
from the connectors (CN411, CN412, CN413) on the PWM
modulation 2 board.
(2) Disconnect the PWM modulation 2 board from the main
amplifier board in an upward direction while releasing the
claw g of the connector
Note:
When releasing the claw g, take care not to break it.
3.1.14 Removing the fan motor
(See Fig.10.)
• Remove the top cover.
(1) From the top side of the main body, remove the tie band
bundling the wires.
Reference:
After reassembling, bundle the wires with a new tie band
as before.
(2) Disconnect the wire from the connector
amplifier board.
(3) Remove the screw N and screw N'.
Reference:
When attaching the screw N', attach the wire holder with
it.
(4) Take out the fan motor assembly.
(5) Remove the two screws P attaching the fan motor to the
fan bracket.
CN413
CN302 on the main amplifier board.
CN402 on the main amplifier board.
CN103 on the main
CN402
on the
Main amplifier
board
CN312
CN412
Fan motor assembly
Fan motor
P
Fan bracket
PWM modulation 1 board
g
f
Tie band
CN302
CN311
CN313
CN413
PWM modulation 2 board
Fig.9
Main amplifier board
Wire holder
N'
P
N
Fig.10
(No.MB383)1-11
CN411
CN103
Tie band