480]: Bind Head Tapping Screw-B 3.0X8 Mfzn2Y (Ep600250 - Yamaha PORTATONE PSR-9000 Service Manual

PSR-9000
18 EN Circuit Board
18-1 Remove the lower case. (See procedure 1.)
18-2 Remove the DP circuit board. (See procedure 14.)
18-3 Remove the DM circuit board and TG circuit board.
(See procedure 15.)
18-4 Remove the keyboard assembly. (See procedure 16.)
18-5 Remove the encoder knob and the hexagonal nut
marked [B]. The EN circuit board can then be removed.
(Fig. 9)
19 PN1 Circuit Board
19-1 Remove the lower case. (See procedure 1.)
19-2 Remove the power supply unit. (See procedure 2.)
19-3 Remove the left and right speaker box units.
(See procedure 7.)
19-4 Remove the DP circuit board. (See procedure 14.)
19-5 Remove the DM circuit board and TG circuit board.
(See procedure 15.)
19-6 Remove the keyboard assembly. (See procedure 16.)
19-7 Remove the eighteen (18) screws marked [480f]. The
PN1 circuit board can then be removed. (Fig. 9)
Upper case
[480h]
14
EN
[B]
PN3
PN2

[480]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250)

(Fig. 9)
20 PN2 Circuit Board
20-1 Remove the lower case. (See procedure 1.)
20-2 Remove the power supply unit. (See procedure 2.)
20-3 Remove the left and right speaker box units.
(See procedure 7.)
20-4 Remove the DP circuit board. (See procedure 14.)
20-5 Remove the DM circuit board and TG circuit board.
(See procedure 15.)
20-6 Remove the keyboard assembly. (See procedure 16.)
20-7 Remove the EN circuit board. (See procedure 18.)
20-8 Remove the six (6) screws marked [480g]. The PN2
circuit board can then be removed. (Fig. 9)
21 PN3 Circuit Board
21-1 Remove the lower case. (See procedure 1.)
21-2 Remove the power supply unit. (See procedure 2.)
21-3 Remove the left and right speaker box units.
(See procedure 7.)
21-4 Remove the DP circuit board. (See procedure 14.)
21-5 Remove the DM circuit board and TG circuit board.
(See procedure 15.)
21-6 Remove the keyboard assembly. (See procedure 16.)
21-7 Remove the eighteen (18) screws marked [480h]. The
PN3 circuit board can then be removed. (Fig. 9)
[480g]
PN1
[480f]