JVC RX-DV31SL, Service Manual

Page: 12 / 66

1-12 (No.22023)
3.1.16 Removing the power board
(See Fig.19)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, disconnect the wire
from the connector CN101 on the power board.
Reference:
Remove the tie bands as required.
(2) Remove the solders from the soldered points d attaching
the power cord.
(3) Remove the two screws U attaching the power board.
(4) From the reverse side of the power board, remove the sol-
ders from the soldered point e attaching the wires.
3.1.17 Removing the power trans. former
(See Figs.19 and 20)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, remove the tie bands
and wire clamps bundling the wires. (See Fig.20.)
(2) Disconnect the wire from the connector CN121 on the main
board. (See Fig.20.)
(3) Disconnect the wires from the connector CN111 on the sub
trans. board. (See Fog.20.)
(4) Remove the two screws U attaching the power board and
then turn over the power board. (See Fig.19.)
(5) Remove the solders from the soldered points e attaching
the wires. (See Fig.19.)
(6) Remove the four screws V attaching the power trans.
former. (See Fig.19.)
(7) Take out the power trans. former.
3.1.18 Removing the headphone board
(See Fig.20)
• Prior to performing the following procedures, remove the top
cover and front panel assembly.
(1) From the top side of the main body, disconnect the parallel
wire from the connector CN291 on the main board.
(2) Remove the three screws S attaching the sub trans. board.
Reference:
It is not necessary to remove the wire from the sub trans.
board.
(3) Remove the screw W attaching the headphone board while
lifting the sub trans. board slightly.
Fig.19
Fig.20
V V
U
U
CN101
Power board
Power cord
Soldered points d
Soldered points e
Tie bands
Power trans. former
S
S
S
W
CN111
CN121 CN291
Main board
Tie bans
Tie bans
Headphone
board
Wire clamps
Sub
trans
board