Yamaha AvantGard N3 Maintenance Handbook page 28

NU1
5. Key Stopper Rail
Remove the left/right screws [S2NC] (one each) and the two hex nuts [28], and the two plastic washers [26], and remove the
key stop rail.
* Be careful not to lose any of the damper holder spacers when attaching or removing the key stop rail.
* Adjust the height of the key stop rail assembly by increasing or decreasing the number of damper holder spacers.
6. Key Block
Remove each of the two screws [S2E], and remove the L and R key blocks.
7. Key Sensor
7-1 Remove all the keys.
* Be careful not to damage the key shutters attached to the keys when installing or removing the keys.
7-2 Remove the eight (8) screws marked [230]. The key sensor unit can then be removed.
* Place a mark of the key sensor unit on the keybed before removal and make sure to install it at the original position.
28
[S2NC]
DAMPER HOLDER SPACER
[S2E]
KEY BLOCK L
KEY SENSOR UNIT
[230]
[26], [28] [26], [28]
KEY STOPPER RAIL ASSEMBLY
KEYS
[S2NC]
DAMPER HOLDER SPACER
[S2E]
KEY BLOCK R
[230]
KEYBED
Marking