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3.1.23 Removing the main amplifier board
(See Figs.18 and 19)
• Remove the top cover, HDMI board, front panel assembly, tun-
er, DSP board, DCD control board, PWM modulation 1 board,
PWM modulation 2 board, OSD connect 1 board and master
clock board.
(1) Disconnect the wire from the connector
speaker terminal 1 board. (See Fig.18.)
(2) Disconnect the wire from the connector
speaker terminal 2 board. (See Fig.18.)
(3) Disconnect the wires from the connectors (CN103, CN106,
CN111) on the main amplifier board. (See Fig.18.)
(4) Disconnect the parallel wire from the connector
the main amplifier board. (See Fig.18.)
(5) Disconnect the wire from the connector
ward side of the regulator board. (See Fig.18.)
(6) Disconnect the wires from the connectors (CN530, CN531)
on the input board. (See Fig.19.)
(7) Disconnect the parallel wire from the connector
the input board. (See Fig.19.)
(8) Remove the four screws Y and two screws Z. (See Fig.19.)
(9) Take out the main amplifier board with the regulator board
from the main body. (See Fig.19.)
1-16 (No.MB448)
CN265
on the
CN262
on the
CN101
on
CN117
on the for-
CN540
on
Main amplifier board
CN103
CN106
CN101
CN117
Regulator board
CN262
Speaker terminal 2 board
Speaker terminal 1 board
Fig.18
Z
Y
CN540
CN531
Input board
CN530
Fig.19
CN111
CN265
Main amplifier board
Y
Y
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