Yamaha AvantGard N3 Maintenance Handbook page 36

N1
• Parts to prepare
• Key cover set: WY612200
<< Contents of set >>
• Key cover:
• Damper holder L:
• Damper holder R:
(1) Replace key cover with new part
Replace the key cover unit with the one prepared for
replacement.
(2) Attachment possible?
Standard 1 Make sure there is no danger of the key cover
dampers coming off the damper holders.
Standard 2 Make sure the key cover dampers fit between
the left and right damper holder.
<Top view>
DAMPER
[S0C]
[S0C]
DAMPER ANGLE
<Bottom view>
[S12]
(4) Key cover height within standard?
(Check the left and right end.)
Standard 1 Make sure the red felt does not rub against keys
and is not rolled up when opening the key cover.
(Fig. 2)
Standard 2 Make sure the gap between the red felt and
the keys is not too wide when the key cover is
opened. (Fig. 2)
(Reference)
Standard value A (at shipment):
4.5 mm ±1 mm, difference on the left and right
within 1 mm (Fig. 2)
36
• Damper holder spacer: WU82040, WU89920
WU18480
• Rubber button:
WY158800
WY158900
[S12]
Z2681600, Z0061800, Z0062500
(3) Attach after adjusting damper width
3-1 Remove the eight (8) screws marked [S12] and remove
the key cover back. (Fig. 1)
3-2 Loosen the four (4) screws marked [S0C] holding the
damper angle to the key cover and adjust the width of the
dampers. (Fig. 1)
3-3 Install the key cover back to the key cover and install to
the main body. (Fig. 1)
KEY COVER
[S12]
KEY COVER BACK
Fig. 1
<Side view>
KEY COVER
KEY
DAMPER ANGLE
[S12]
A
FELT (RED)
Fig. 2
DAMPER
[S0C]
[S0C]