DU1A
18
Key sensor unit
KEY SENSOR
[51GB]
Bottom view
17.
KEY SENSOR Circuit Board
(Time required: About 28 minutes)
17-1
Open the top board (front). (See procedure A-1.)
17-2
Remove the upper board (front). (See procedure A-2.)
17-3
Remove the fallboard. (See procedure A-3.)
17-4
Remove the keyboard holder. (See procedure A-4.)
17-5
Remove the key sensor unit. (See procedure B-16.)
17-6
Remove the two (2) screws marked [51GB]. The KEY
SENSOR circuit board can then be removed. (Fig.6)
18.
Plunger Assembly and Coil Assembly
(Time required: About 17 minutes)
18-1
Open the top board (front). (See procedure A-1.)
18-2
Remove the upper board (front). (See procedure A-2.)
18-3
Remove the fallboard. (See procedure A-3.)
18-4
Remove the keyboard holder. (See procedure A-4.)
18-5
Remove the lower board (front). (See procedure A-5.)
18-6
Remove the action unit. (See procedure A-6.)
18-7
Remove the necessary keys, and remove the plunger
assembly. (Fig.7, Photo.8)
18-8
Remove the three (3) screws marked [8G], and remove
the upper yoke. The coil assembly can then be removed.
(Fig.7, Photo.8)
∗
Remove the other components with the same procedure.
(Fig.6)
[51GB]: Bind Head Tapping Screw-S 3.0X4 MFZN2Y (VP357200)
[8G]
Plunger assembly
Upper yoke
Coil assembly
(Fig.7)
[8G]: Pan Head Screw 4.0X30 MFZN2Y (EE640200)
[8G]
Upper yoke
Plunger assembly
(Photo.8)
Top view