Yamaha AvantGard N3 Maintenance Handbook - Page 40

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KEY COVER

KEY

FELT (RED)

Fig. 8

Standard 2 Make sure that with the key cover closed the

difference in level between the front surface of

the arm and the front of the key cover is within

the standard (especially the difference on the left

and right). (Fig. 10)

(Reference)

Standard value C (at shipment):

3.2 mm ±2 mm, difference on the left and right

within 2 mm (Fig. 10)

• Key cover set (WY612200)

<< Contents of set >>

WU18480

WY158800

KEY COVER

BLACK KEY

Fig. 9

※ T he damper holder R (WY158900)

shall be symmetrical to the other.

3.5 mm

4.5 mm

Z2681600

KEY COVER

ARM

4) Drill a pilot hole in the inner surface of the arm matching

the hole on the back side of the damper holder body.

Pilot hole: φ 2.1 mm ±0.1 mm, depth 20 mm

5) Remove the damper holder and countersink the hole. φ 5

mm x 90°

6) Attach the damper holder, repeat step 3) for front/back

position alignment, and tighten the screw of the damper

holder.

7) Perform the key cover replacement procedure step "(9)

Install arm upper and front board".

WU82040

5.5 mm

Z0061800

Z0062500

Fig. 10

WU89920