Yamaha AvantGard N3 Maintenance Handbook page 23

11. Bottom unit section (access to main circuit board)
11-1 Remove the Wo Grill (L, R).
Remove the key bed bottom screws [S05A], [S05B]
(two each).
Pull out the outer side towards you while holding down
the inner side of the Wo grill and remove the fastening
tape, then remove the Wo grill.
Wo Grill L
11-2 Remove the center board assembly.
Remove the four front panel screws [S03], and remove the
center board assembly.
* The main circuit board is now accessible. (See lower drawing)
MAD (1) MAD (2)
[S09F] x 4 [S09F] x 4
SPEAKER (WOOFER)
Wo Grill R
[S06A]
[S09A]
[S09B]
[S09C]
WO GRILL L
[S05A]
[S03]
CENTER BOARD
[S09G] x 4
MAD
(3)
DM
[S09D]
x 8
DCDC
YDA3
(1)
DCDC
x 4
(2)
ACDC
YDD
x 4
WO GRILL R
[S05B]
[S09H] x 4 [S09H] x 4
MAD MAD
(4) (5)
DIP switch
[S06A]
x 4
[S09D]
x 4
[S09E]
x 4
SPEAKER (WOOFER)
N2
[S03]
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