Yamaha YDO-323 Service Manual page 14

YDP-323
24. Assembling the Keyboard
24-1 Hammer, White Key (Hammer, Black Key)
Place the keyboard assembly upside-down, insert a
hammer assembly into the frame, and put the stopper
(L88_W) on. (Fig. 29)
* There are four (4) kinds of hammers that differ in
weight.
24-2 Spring
Place the keyboard assembly rightside up. Fix key
springs on the frame by setting one at each slit and
pushing down once on each key spring. (Fig. 30)
* Be careful of the direction of the spring. It should be
installed with its projecting end facing upward.
(Fig. 30-1)
24-3 Assembling the White Key (Black Key)
After a key has been fit to part [C] and key guide,
make sure that the spring is fixed to the key and then
press down part [B] of the key. (Fig. 31)
Stopper (L88_W)
White key
Key guide
[C]
14
Hammer, white key
Frame
Fig. 29
[B]
Spring
Fig. 31
GHD EBUS L, MK SUB Circuit Board
24-4
Tighten the seven (7) screws marked [260A] to fix the
GHD EBUS L, MK SUB circuit boards. (Fig. 22)
GHD M Circuit Board
24-5
Tighten the five (5) screws marked [260B] and the
screw marked [262] to fix the GHD M circuit board.
(Fig. 22)
GHD H Circuit Board
24-6
Tighten the four (4) screws marked [260C] and the
screw marked [262] to fix the GHD H circuit board.
(Fig. 22)
* When installing the circuit boards, set it under hooks
to align the triangle marks of the circuit board and
projection parts of the frame as shown in figure 32.
Fig. 30
Fig. 30-1
Hook
GHD M
Triangle mark
Fig. 32
Spring
Frame
Hook
Up
GHD EBUS L