Yamaha XS250 Service Manual - Page 7

Browse online or download pdf Service Manual for Amplifier Yamaha XS250. Yamaha XS250 28 pages. Power amplifier
Also for Yamaha XS250: Owner's Manual (15 pages)

Print Page
Yamaha XS250 Service Manual

DISASSEMBLY PROCEDURE

1.
Top Cover
1-1 Remove the nine (9) screws marked [410]. The top cover
can then be removed. (Fig. 1, 2)
2.
Power Transformer
2-1 Remove the top cover. (See Procedure 1.)
2-2 Remove the four (4) screws marked [70]. The power
transformer can then be removed. (Fig. 1)
[410]
[410]
1/5
[80a]
6
[410]
Power Transformer
[70]: Bind Head Screw SP 5.0X10 MFZN2BL (VU688100)    
[80]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)    
[410]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)    
5.
Front Panel
5-1 Remove the top cover. (See Procedure 1.)
5-2 Remove the two (2) screws marked [380a] and the two (2)
screws marked [380b]. The front panel can then be removed.
(Fig. 3)
6.
SUB 3/5 Circuit Board
6-1 Remove the top cover. (See Procedure 1.)
6-2 Remove the front panel. (See Procedure 5.)
6-3 Remove the two (2) screws marked [220]. The SUB 3/5
circuit board can then be removed. (Fig. 3)
[380a]
3/5
Top cover
[410]
(Fig. 1)
[200] [220]
4/5
[380b]
[220]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)   
[380]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)   
3.
SUB7 1/5 Circuit Board
3-1 Remove the top cover. (See Procedure 1.)
3-2 Remove the six (6) screws marked [80a]. The SUB 1/5
circuit board can then be removed. (Fig. 1)
4.
SUB 2/5 Circuit Board
4-1 Remove the top cover. (See Procedure 1.)
4-2 Remove the six (6) screws marked [50a] and the two (2)
screws marked [50b]. The SUB 2/5 circuit board can then
be removed. (Fig. 2, 7)
2/5
[50b]
[410]
[70]
4
[410]
[50a]
[50a]: Bind Head Screw A4.0X8 MFZN2BL (VP156800)
[410]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)    
7.
SUB 4/5 Circuit Board
7-1 Remove the top cover. (See Procedure 1.)
7-2 Remove the front panel. (See Procedure 5.)
7-3 Remove the two (2) screws marked [200]. The SUB 4/5
circuit board can then be removed. (Fig. 3)
8.
DC Fan
8-1 Remove the top cover. (See Procedure 1.)
8-2 Remove the front panel. (See Procedure 5.)
8-3 Remove the four (4) screws marked [150]. The DC fan
can then be removed. (Fig. 3)
[150]
Front panel
[150]
DC Fan
(Fig. 3)
[410]
Rear panel
[50a]
(Fig. 2)
[380a]
[380b]
XS250/350
7