43
N1
N1 ARM UPPER ASSEMBLY REPLACEMENT PROCEDURE
1)
Remove the top board unit.
2)
Remove the key cover unit.
3)
Remove the front board assembly.
4)
Remove the four (4) screws marked [S14]. (Fig. 1)
Remove the three (3) screws marked [S2E] holding the
arm upper assembly L and the back rail from the back
board angle. Remove the arm upper assembly L with the
back board angle still attached to the back rail side. (Fig. 1)
* W h e n r e m o v i n g a n d a t t a c h i n g t h e a r m u p p e r
assembly L during servicing, the back board angle
references the installation position of the arm upper
assembly L.
When removing the arm upper assembly L, never
remove the back board angle from the back rail.
Replace the arm upper assembly L with a new service
part.
* The arm upper assembly L service part does not
include back board angle.
* The following instructions describe the replacement of the arm upper assembly L.
Replacement of the arm upper assembly R is performed in the same way.
Fig. 1
159.6 mm±0.5 mm
[S2E]
[S14]
[S14]
BACK RAIL
ARM LOWER ASSEMBLY L
ARM UPPER ASSEMBLY L
<Side view>
5)
Install the arm upper assembly L. At this time, make sure
the distance between the front of the arm lower assembly
L and the front of the arm upper assembly L is 159.6 mm
± 0.5 mm. (Fig. 1)
6)
Install the front board assembly. At this time, do not
secure the protect cover to the front board assembly.
7)
Perform step (10) of "Key Cover Replacement
Procedure".
