No.mb449)1 - JVC RX-F31S Service Manual

3.1.9 Removing the vol sel board
(See Fig.8)
• Remove the top cover.
(1) Remove the strain relief from the rear panel in the direction
of the arrow.
(2) From the back side of the main body, remove the two
screws G attaching the vol sel board to the rear panel.
(3) From the top side of the main body, disconnect the wires
from the connectors (CN204, CN205) on the vol sel board.
(4) Take out the vol sel board from the main body and remove
the wires from the soldered sections f on the reverse side
of the vol sel board.
3.1.10 Removing the audio input/output board
(See Fig.8)
• Remove the top cover.
(1) From the back side of the main body, remove the two
screws G attaching the audio input/output board to the rear
panel.
(2) Disconnect the audio input/output board from the video
connect board while releasing the claw g of the connector
CN516 on the audio input/output board.
Note:
When releasing the claw g, take care not to break it.
(3) Disconnect the card wires from the connectors (CN508,
CN514) on the forward side of the audio input/output
board.
3.1.11 Removing the primary board
(See Fig.8)
• Remove the top cover.
(1) From the top side of the main body, disconnect the power
cord from the connector
(2) Disconnect the wires from the connector
mary board.
(3) Remove the six screws H attaching the primary board on
the chassis base assembly.
(4) Take out the primary board from the main body and remove
the wires from the soldered sections h on the reverse side
of the primary board.
3.1.12 Removing the power transformer
(See Fig.9)
• Remove the top cover.
(1) From the top side of the main body, remove the tie bands
bundling the wires.
Reference:
After reassembling, bundle the wires with the new tie
bands as before.
(2) Disconnect the wires from the connectors (CN201, CN702)
on the main amplifier board.
(3) Disconnect the wire from the connector
mary board.
(4) Remove the four screws J attaching the power transformer
on the chassis base assembly.
1-8 (No.MB449)
CN203 on the primary board.
CN218 on the pri-
CN202 on the pri-
Primary board
h
CN203
H
Vol sel board
Power cord
f
CN205
CN204
Audio input/output
board
Stain relief
G G
Strain relief Rear panel
Fig.8
Power transformer
J
J
CN204
CN205 J
Vol sel board
Chassis base assembly
Fig.9
Chassis base assembly
H
CN218
H
CN514
CN508
Audio input/output
board
CN516
Video
g
connect
board
CN702
CN201
Tie bands
Main amplifier board