Yamaha YDO-323 Service Manual page 11

Z CAUTION
Do not hold the key cover or top portion.
For safety, this work should be done by two persons.
Key cover
Do not hold here.
Hold here.
Fig. 17
19. Arm Assembly (L, R)
(Time required: About 15 minutes)
19-1 Remove the top board assembly. (See procedure 3)
18-2 Remove the key cover assembly. (See procedure 8)
19-3 Remove the rack L and R. (See procedure 9)
19-4 Remove the stopper rail assembly. (See procedure 10)
19-5 Remove the end block assembly L and R.
(See procedure 11)
19-6 Remove the keyboard assembly. (See procedure 12)
19-7 Remove the main unit. (See procedure 18)
(Parts removed in Steps 19-1 through 19-6 are
component parts of the main unit.)
19-8 Remove the two (2) screws marked [S04A] and the
tow (2) screws marked [S03]. (Fig. 8)
19-9 Remove the three (3) screws marked [S04C]. The arm
assembly L can then be removed. (Fig. 14)
* The arm assembly R can then be removed in the same
manner.
Side board assembly L
Pedal box assembly
[5a]: Truss Head Screw 6.0X20 MFZN2B3 (WF001300)
Top portion
Do not hold here.
[5a]
Fig. 18
20. Side Board Assemble (L, R)
(Time required: About 4 minutes)
20-1 Remove the headphone hanger. (See procedure 1)
20-2 Disconnect the AC cord and the PK-LF cable.
(Fig. 15)
20-3 Remove the main unit. (See procedure 18)
20-4 Remove the screw marked [5bA] and the two (2)
screws marked [5a]. The side board assembly L can
then be removed. (Fig. 3, 18)
* The side board assembly R can then be removed in
the same manner.
21. Stand Base
(Time required: About 3 minutes)
21-1 With a soft cloth like a blanket placed on the floor,
place the main unit on its back board gently.
* For safety, this work should be done by two persons.
21-2 Put thick books or the like under the main unit at both
sides.
21-3 Remove the three (3) screws marked [3C]. The left
stand base can then be removed. (Fig. 19)
* The right stand base can then be removed in the same
manner.
22. Pedal Box Assembly, Pedal Assembly
(Time required: About 5 minutes)
22-1 Disconnect the PK-LF cable. (Fig. 15)
22-2 Remove the four (4) screws marked [5d]. (Fig. 3)
22-3 Remove the two (2) screws marked [5a] each from
both sides of the assembly. The pedal box assembly
can then be removed. (Fig. 18)
22-4 Remove the eight (8) screws marked [7B] and the
screw marked [8]. The pedal assembly can then be
removed. (Fig. 20)
[3C]
Stand base
[3C]: Pan Head Tapping Screw-1 4.0X65 MFZN2W3 (WF514200)
Fig. 19
YDP-323
11