Disassembly Procedure - Yamaha DA824 Service Manual

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DA824

DISASSEMBLY PROCEDURE

1.
Top Cover
1-1
Remove the fourteen (14) screws marked [400]. The top
cover can then be removed. (Fig. 1)
2.
Circuit Boards and Units
Remove the top cover, each circuit board and unit can
then be removed.
Circuit Board and Unit
MAIN
JK
DA
DC Assembly
Power Transformer
<Top View>
Top cover
DA
[360]
[400]: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800)
3.
MYSL Circuit Board
*
Note that remove card before following operation.
3-1
Remove the top cover. (See procedure 1.)
3-2
Remove the MAIN circuit board. (See procedure 2.)
3-3
Remove the two (2) screws marked [420]. The IF plate
can then be removed. (Fig. 2)
3-4
Remove the four (4) screws marked [250]. The OPT
assembly can then be removed. (Fig. 3)
3-5
Remove the two (2) screws marked [240]. The MYSL
circuit board can then be removed. (Fig. 3)
8
Ref. No.
A
Screw
280
Bonding Screw 4.0X8 MFZN2BL (VS154500)
290
Bonding Screw 3.0X6 MFZN2BL (VS863000)
300
Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
380
Bonding Tapping Screw 3.0X8 MFZN2BL (VN41330)
350
Bonding Tapping Screw 3.0X8 MFZN2BL (VN41330)
360
Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
200
Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800)
180
Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800)
[400] X14
JK
MAIN
[300]
[180]
Power transformer
(Fig. 1)
Screw
<Rear View>
[280]
[A]
[420]
[180]
[420]: Bind Head Screw A4.0X12 MFZN2BL (VP156900)
[290]
[380] X16
IF plate
[350]
(Fig. 2)
QTY
Fig.
2
2
1
2
2
2
5
1
16
2
6
2
4
1
2
3
4
1

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