Yamaha P-115B Service Manual page 100

H
■ BLOCK DIAGRAM（ブロックダイアグラム）(P-45B)
1
Keyboad
GHS 88Keys
GHL88L
A-1 – C2
2
CN201 (27P)
DM
3
X101
16.9344MHz
X102
3
48MHz
+12V
Detect Voltage 2.8V
+3.3D
(VDD -0.3 – +10V)
4
/RES
Reset
1
2
IC106 (5P)
5
6
28CA1-2001141989
G F
GHL88H
PN
C#5 – C7
CN1 (17P)
STANDBY/ON
CN3 (17P)
GHL88M
LD401 SW402
C#2 – C5
CN2 (27P)
+3.3D
B[1-15]
N[11-16,21-26]
TR101
/HP-MUTE 11
DAC
24bit
WM8524
7
23
8
IC301 (16P)
9
10
25
68
CPU
SWX03
9,16,25,32
IC100 (176P)
SDO1
35
SDO0
43 6
WCLK
44
8 D.AMP
BCLK
40 7
INT_CLK: 135.4752MHz
SYSCLK
YDA175
39 5
Bus_CLK: 67.7MHz
133
SYSCLK : 256Fs
IC302 (33P)
Format : I2S
/DAMP_MUTE 17 MUTEN/
16
24 SLEEPN
IC103 (16P)
HeartBeat
Error
1
Detection
14
FLASH ROM
64Mbit
/MUTE
<Program/WAVE>
+3.3D
IC105 (56P)
1
E
GRAND PIANO/
MASTER VR
FUNCTION
A10k
VR401
SW401
CN401 (6P)
CN102 (6P)
PWSW
SUS_PEDAL
15
IC303
HP-IN
(8P)
L 3
RC NJM4556
1
Filter
7
R 5
NJM4556
TR304
/PSWI
TR301
PSWO
TR305
+3.3D
/HP-MUTE
TR303
L+
+12V
LC L-
CN104
Filter
R+
(3P)
R-
CN301
(2P)
IC104 (8P) CN302 (2P)
16
/DETECT
13 7
2 08
/HP-MUTE
1
/DETECT-CHECK
6
3
08
/DAMP_MUTE
HP-IN
5
TR103
TR102
Ripple
+HP
Filter
+3.3A PVDD
IC101 (8P)
+3.3V 2, 3
1
+3.3D +12V
DC/DC
4
D C
USB TO HOST PHONES
SUSTAIN
JK201 JK302
L
R
+3.3D
CN103 (3P)
+
SP-L
-
12 cm
Phase
6
SP-R
+ SP Normal
-
12 cm
6
■ BLOCK DIAGRAM（ブロックダイアグラム）(P-45B)
B A
P-115B/P-115WH/P-45B
AC ADAPTOR
PA-150/PA-150A
/PA-150B/PA-5D
DC IN (12V)
JK101
CN101 (4P)
CN102 (4P)
JK303
FZ101
D101
TJ20A10
FT101
TR101
D103
PWSW
D104
JK
1
2
3
4
5
6