Then Be Removed - Yamaha AD824 Service Manual

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[350]
JK
[400]
AD
[370]
[350]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[370]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[400]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
5.
MYSL Circuit Board
*
Note that remove card before following operation.
5-1
Remove the top cover. (See procedure 1.)
5-2
Remove the MAIN circuit board. (See procedure 2.)
5-3
Remove the two (2) screws marked [530]. The IF plate
can then be removed. (Fig. 2)
5-4
Remove the four (4) screws marked [260]. The OPT
assembly can then be removed. (Fig. 5)
5-5
Remove the two (2) screws marked [240]. The MYSL
circuit board can then be removed. (Fig. 5)
6.
AC Circuit Board
6-1
Remove the top cover. (See procedure 1.)
6-2
Remove the MAIN circuit board. (See procedure 2.)
6-3
Remove the three (3) screws marked [50A] and the two
(2) screws marked [110A]. The AC circuit board can then
be removed. (Fig. 6)
*
The fuse is not a part of the AC circuit Board. When you
replace the AC circuit board, you should remove the fuse
from the board, and put it back into the holder on the new
board.
7.
DC Circuit Board
7-1
Remove the top cover. (See procedure 1.)
7-2
Remove the DC assembly. (See procedure 2.)
7-3
Remove the four (4) screws marked [60]. The transistor
holder can then be removed. (Fig. 7)
7-4
Remove the three (3) screws marked [40]. The DC circuit
board can then be removed. (Fig. 7)
*
The four fuses are not part of the DC circuit Board. When
you replace the DC circuit board, you should remove the
fuses from the board, and put it back into the holder on the
new board.
[400]
[370]
Fig. 3
<Top View>
[430]
AD shield sheet
[430]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
AD824
[430]
Fig. 4
11

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