Yamaha AvantGard N3 Maintenance Handbook page 39

<Top view>
DAMPER
HOLDER
SPACER
<Front view>
(16) Does the key cover open properly?
Standard Make sure the keys and the reflections of the
keys on the key cover run in a straight line.
(Reference)
Standard (at shipment):
90° ±1° angle with white keys
(17) Adjust using front board rubber buttons
Adjust to the standard given in section (16) by replacing the
rubber buttons with rubber buttons of appropriate size. (Fig. 7)
(18) Replacement completed
[S2E]
PROTECT COVER
FRONT BOARD
RUBBER BUTTON
[S2E]
FRONT BOARD CLEAT
Fig. 7
●Adjustment procedure by replacing damper holder
1) Replace the damper holders with parts for exclusive service
use.
At this time, only use the screw from the top of the arm.
2) Adjust the damper holder height using damper holder
spacers.
Standard 1 Make sure the red felt does not rub against keys
and is not rolled up when opening the key cover.
(Fig. 8)
Standard 2 Make sure the gap between the red felt and
the keys is not too wide when the key cover is
opened. (Fig. 8)
(Reference)
Standard value A (at shipment):
4.5 mm ±1 mm, difference on the left and right
within 1 mm (Fig. 8)
3) Determine the correct front/rear position of the damper holder
and tighten the screw from the arm top surface.
Standard 1 Make sure that with the key cover opened the
gap between the back of the black keys and the
front surface of the key cover is within standard.
(Fig. 9)
(Reference)
Standard value B (at shipment):
3.3 mm +1.7 mm/-1.3 mm, difference on the
left and right within 1 mm (Fig. 9)
DAMPER
HOLDER
SPACER
[S2E]
RUBBER BUTTON
N1
39