Yamaha DISKLAVIER MX1Z Service Manual page 12

MX1Z
16. Plunger Assembly and Coil Assembly
16-1 Open the top board. (Fig. 1)
16-2 Remove the upper front board. (See Procedure A-1.)
16-3 Remove the keyboard cover. (See Procedure A-2.)
16-4 Remove the key stop rail. (See Procedure A-3.)
16-5 Remove the action unit. (See Procedure A-5.)
16-6 Remove the keyboard; remove the plunger assembly. (Fig. 9)
16-7 Remove the screw marked [8G] and the upper yoke. The
coil assembly can then be removed. (Fig. 9)
17. Circuit Boards and Units
Remove the lower front board and following screws, each board and unit can then be removed. (Fig. 10)
Circuit Board and Unit
DRIVE A
DRIVE B
DRIVE C
PK-CTL
Pedal Drive Unit
PWB
DRIVE C
Pedal drive unit
12
[8G]: Pan Head Tapping Screw 4.0x30 MFZN2Y (EE640200)
Ref. No.
[15GA] Bind Head Tapping Screw-S 3.0 x 6 MFZN2Y
[15GB] Bind Head Tapping Screw-S 3.0 x 6 MFZN2Y
[15GC] Bind Head Tapping Screw-S 3.0 x 6 MFZN2Y
[15GD] Bind Head Tapping Screw-S 3.0 x 6 MFZN2Y
[91S] Truss Head Tapping Screw-1 4.0 x 16 MFZN2Y
[13] Bind Head Screw 4.0 x 8 MFZN2BL
DRIVE B
(Fig. 10)
(Fig. 9)
Screw
DRIVE A
PWB
[8G]
Plunger assembly
Upper yoke
Coil assembly
QTY
(EP600410)
(EP600410)
(EP600410)
(EP600410)
(03747340)
(EG340220)
PK-CTL
3
2
2
3
4
6