(No.MB205)1-11
3.1.7 Removing the power amplifier board
(See Fig.11)
• Remove the metal cover, front panel assembly, rear panel,
power supply board and micon board.
(1) From the top side of the main body, remove the wire holder
and tie band fixing the wire 1.
(2) Remove the four screws
L
attaching the power amplifier
board.
Reference:
• When attaching the power amplifier board, align the sections
f
of the main chassis in the slots of the main amplifier board.
• After attaching the power amplifier board, pass the wire 1
through the section
g
of the power amplifier board.
• When reassembling, fix the wire 1 with the wire holder and
new tie band as before.
• When reassembling, pass the wire 2 through the section
h
of the power amplifier board.
Fig.11
3.1.8 Removing the heat sink
(See Figs.12 and 13)
• Remove the metal cover, front panel assembly, rear panel,
power supply board, micon board and power amplifier board.
(1) From the reverse side of the power amplifier board, bend
the claws
i
of the heat sink in the direction of the arrow.
(See Fig.12.)
(2) From the forward side of the power amplifier board, remove
the four screws
M
attaching the heat sink. (See Fig.13.)
(3) Disengage the joints
j
and remove the heat sink in the di-
rection of the arrow. (See Fig.13.)
Fig.12
Fig.13
L
Power amplifier board
L
Wire holder
Wire 1
g
h
Wire 2
L
f
f
Main chassis
Tie band
Power amplifier board
i
M
Power amplifier board
M
Heat sink
j