Yamaha P-115B Service Manual page 99

H
■ BLOCK DIAGRAM（ブロックダイアグラム）(P-115B/P-115WH)
1
PN2
SW MATRIX
LD3–5 SW7–15
CN7 (22P)
CN7 (22P)
POWSW
MUTE-RES
2
FLASH-RES
DRIVER
SW[0]–[3]
TR1–5
SOUT[0]–[3]
+1.2V
+3.3V
LED[0]–[4]
MASTER-VR
/PSWI
PSWO
X3
48MHz
3
+3.3D
22
27 18
28
SCAN CPU
14
17,38 MKS5 X1
5MHz
15
IC7(44P)
1,31–36,40–44 2–11,23,24,26
4
CN4 (5P)
CN1 (27P)
CN2 (27P)
C#2 – C5
GHL88M
CN1 (17P)
5
CN1 (17P)
A-1 – C2
GHL88L
6
28CA1-2001141870
G F
PN1 MASTER VR
A10k
SW MATRIX
VR1 LD1–2 SW2–6
+3.3D
+3.3D +3.3D +3.3D
14
Reset IC4(5P)
IC5(8P)
Cir
PROGRAM
WORK WAVE
X2
FLASH
SDRAM ROM
16.9344MHz
ROM
128Mbit 128Mbit
64Mbit
IC8 (54P) IC18 (56P) IC9 (56P)
16
16 16 16
CPU
CPU-Bus
SWX08
WAVE-Bus
INT_CLK: 135.4752MHz
DSP-Bus
Bus_CLK: 67.7376MHz
IC1(484P)
6
11
/MUTE
1
SDO1 24bit
7
DAC
8
16
9
IC23(16P)
10
6
DAMP
8
YDA175
7
5 IC22(33P)
17
9,16,25,32
/SPOFF
AVCC
+3.3A
+5D
REG.
+3.3V
5 4
+3.3D
IC21(5P)
REG.
POWSW
+1.2V
5
4 /PSWI
+1.2D
IC20(5P)
PSWO
CN6 (33P)
CN4 (5P)
DAMP1,DAMP2,SOSTE,SOFT
C#5 – C7
GHL88H
Keyboad
JK5
JK7
USB
SUSTAIN
88Keys
GHS
TO HOST
E
P-115B/P-115WH
STANDBY/ON
SW1
POWSW
FLASH-RES
+3.3D
14
DSP
SDRAM
64Mbit
AVCC
8
IC16 (54P)
AUX OUT
AUX-OUT-L
7
4
16
AMP
AUX-OUT-R
MAX9820
6 5
9
IC32(10P)
/MUTE
+B
+3.3A
L 3 1
/MUTE TR404
IC401(8P)
R
5 7
TR405
/MUTE
/MUTE
24
+L
ERROR
-L
LPF
DETECTION
+R ERR-DETECT
1
-R
IC25(16P)
IC27
13 (14P)
/DETECT
PVCC (+B)
6
MUTE-RES
MUTE-CHK
5
MUTE-INV MUTE
MUTE
2 SPOFF-INV
SPOFF
DCDC IC28 (8P)
1 +5V
IC24(8P)
2,3
PVCC
+B
CN1 (33P)
+B
POWSW
D13
/PSWI
PSWO
JK6
PEDAL
UNIT LP-5A
■ BLOCK DIAGRAM（ブロックダイアグラム）(P-115B/P-115WH)
3
D C
JK 1/2 JK 2/2
※ , and CN1 are shown separately here but actually they
constitute one circuit board.
JK 1/2 JK 2/2
※ 、 及び CN1 は分割して記載していますが、1 枚のシートです。
JK 1/2
JK3
L
R
JK4
HP
JK1
HPIN
HPIN HPIN
HP-L HP-L
HP-R HP-R
JK2
HPF
SP
+
Tweeter L channel
-
Tweeter
8
SPOFF
+
Speker L channel
-
SPEAKERS
12 cm x 2
+
Speker R channel
-
HPF
+
5 cm x 2
Tweeter R channel
-
JK 2/2
JK8
D18
TR2
TH1 DC IN (12V)
D15
PolySW
AC adaptor
PA-150/PA-150A/
TR1
PA-150B/PA-5D
B A
P-115B/P-115WH/P-45B
Phase
Normal
Normal Normal
6
TW
6
1
2
3
4
5
6