JVC TH-S77 Service Manual page 11

3.1.7 Removing the power board
(See Figs.12 and 13)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the back side of the main body, remove the screw K
attaching the power board to the rear panel. (See Fig.12)
(2) From the top side of the main body, disconnect the parallel
wires from the connectors
board. (See Fig.13)
(3) Remove the two screws M attaching the power board. (See
Fig.13)
(4) Release the holder using a pliers and take out the trans-
former board from the main body.
Reference:
Remove the rear panel as required. (See "3.1.3 Removing the
rear panel")
3.1.8 Removing the main board
(See Fig.14)
• Prior to performing the following procedures, remove the metal
cover, rear panel, audio signal input/output board and tuner as-
sembly.
(1) From the top side of the main body, disconnect the card
wires from the connectors CN401, CN402, CN408, CN451,
CN452 and CN460 on the main board.
(2) Disconnect the parallel wires from the connectors
to CN407 and CN420
(3) From the top side of the main body, remove the two screws
N, screw N' attaching the main board on the main body.
(4) Take out the main board from the main body.
Reference:
When attaching the screw N', attach the earth wire with it. (See
Fig.14)
CN404 to CN407 on the main
on the main board.
K
Rear panel
M
CN420
CN404
CN407 Main board
CN406
Fig.12
Main board
CN404 CN406
Power board CN405
Fig.13
N' N
CN460 CN452
CN451 CN401
CN405 CN408
CN404
Fig.14
CN407
CN402
N
(No.MB421)1-11