Yamaha PORTATONE PSR-9000 Service Manual page 11

7 Speaker Box Unit Left and Right
7-1 Remove the lower case. (See procedure 1.)
7-2 Remove the power supply unit. (See procedure 2.)
7-3 Remove the two (2) screws marked [310b] and the
four (4) screws marked [110a]. The left and right
speaker box units can then be removed. (Fig. 5)
8 Woofer
8-1 Remove the lower case. (See procedure 1.)
8-2 Remove the power supply unit. (See procedure 2.)
8-3 Remove the left and right speaker box units.
(See procedure 7.)
8-4 Remove the four (4) screws marked [60]. The woofer
can then be removed. (Fig. 5)
[A] x 4 [60] x 4
NET
Upper case
[110a]
[310b]
[65] x 4
Woofer Tweeter
[60]: Bind Head Tapping Screw-1 3.0X12 MFZN2BL (EP030340)
[65]: Bind Head Tapping Screw-1 3.5X16 MFZN2BL (EP030260)
[110]: Pan Head Sems Tapping Screw 3.0X10 (V5115200)
[310]: Bind Head Tapping Screw-B 4.0X14 MFZN2Y (EP600750)
9 Tweeter
9-1 Remove the lower case. (See procedure 1.)
9-2 Remove the power supply unit. (See procedure 2.)
9-3 Remove the left and right speaker box units.
(See procedure 7.)
9-4 Remove the four (4) screws marked [65]. The tweeter
can then be removed. (Fig. 5)
10 NET Circuit Board
10-1 Remove the lower case. (See procedure 1.)
10-2 Remove the power supply unit. (See procedure 2.)
10-3 Remove the left and right speaker box units.
(See procedure 7.)
10-4 Remove the woofer. (See Procedure 8.)
10-5 Remove the four (4) supports marked [A]. The NET
circuit board can then be removed. (Fig. 5)
[65] x 4
Tweeter
[110a]
(Fig. 5)
[60] x 4 [A] x 4
Woofer
NET
[110a]
[310b]
PSR-9000
11