JVC TH-M303 Service Manual page 11

3.1.8 Removing the main board
(See Fig.11)
• Prior to performing the following procedures, remove the metal
cover, rear panel, audio & digital input board and tuner.
(1) From the top side of the main body, disconnect the card
wires from the connectors
CN460) on the main board.
Reference:
When reassembling, connect the card wires to the con-
nectors (CN401 to CN403) on the main board after pass-
ing the card wires through the hole f on the main board.
(2) Disconnect the parallel wires from the connectors
to CN407, CN456 and CN457) on the main board.
(3) From the top side of the main body, remove the two screws
P and screw P' attaching the main board on the bottom
chassis.
Reference:
When attaching the screw P', attach the earth wire with
it. (See Fig.11)
(4) Take out the main board from the main body.
(CN401 to CN403, CN450 and
(CN404
CN460 CN456
Earth wire CN457
P
P'
CN450
P
CN403
Main board CN404
Bottom chassis CN407
Fig.11
CN401 CN402 Hole f
CN406
CN405
(No.MB184)1-11