Block Diagram - Yamaha P-120 Service Manual

BLOCK DIAGRAM

KEYBOARD
GHD
DRV(1-8)
CN101-13P
PN L / R
To Host
JK3
OUT
MIDI
JK2
HOST
IN
Jack
JK1
JK5
PEDAL
Jacks
X2
JK4
AUX OUT
Jacks
X 2
AC Socket(100V~230V)
P-120
DM
4KHz
KSN2
7,9-15
1-3
3-8
TR Array
P_DR(5-7)
DEC
IC6 16P
TA1
P_LD(1-8)
LED
Drv Array
MATRIX
1-8
11-18
P_SW(2-7)
IC4 18P
SWITCH
MATRIX
1MCLK
SELECTOR
RCMAC
+3.3D
MIDITX
MODE1 11
MIDI
+5D I
MIDIRX
MODE0
I/F 6
J
1,6,22
AUXPEDAL, PEDAL
DMA(1-8)
81-87,89,106-118,
H
SUSTAIN
DMD(0-15) 121-123
4M
DRAM
15,16,30,31
43,44,101
DJACK
DRAS,DCAS
IC3 44P
DWE
HEAD
PHONES
JK103,JK104
Jacks
X 2
JK105,JK106
LEVEL
JK102
FIXED
DC-IN JK101
Clock
IC24 32P
8.4672MHz
IC31 32P
9 10
21,129,154,155
CMA(1-20)
75,76,79-87,89,96-99,
E 256k 256k
CMD(0-15)
102-118,121-123
SRAM SRAM
CS1,CS0,CRD
X 2 X 2
125-127
46,88,93
22,24
CUB,CLB
90,95
29
SWX00B
MODE0
+3.3V 32
(MASTER)
135-142 B
MODE1
GND
C
IC8 168P
RESET
128
145-151
SMA(1-22)
D
SMD(0-15)
14,20,22,153
41
SOE
2 A 129 74
SMA23
K
2
150-152
154,156,166
1
23-34,37-40,47,48,
51-59,62-74
SMA23
74
SWX00B
41
(SLAVE)
IC13 8P
SOE
PCM69AU IC22 8P
IC7 168P
2,3,
DACLR
14-16 5,6 3,5
DAC I/V
SYSCLK
2,4, 1,7
WCLK,QCLK 18Bit
150,153,154 7,9
IC10 20P
1,20
+12V
1
+5V
3
REG.
IC23 3P
AJACK
+12V
RY102
MUTE
RELAY
TH101 L101
D101
Pole SW
LINE
Electrolytic
2.5A
FILTER Cap.
CN101-6P
CN201-6P
STANDBY
SW SW
+5D
+5D
32
CMA(1-20)
32
F
CMD(0-15) +5D
16M
ROM
D1
(PROGRAM)
CS0,CRD
VCC
11,13 BACK
IC24,31
IC1 42P
+3.3D
VCC
+3.3D
36,37 5
G 128M
24 4 CMOS
ROM
I/V
(WAVE)
IC32 5P
27
IC28 48P
2
IC29 48P
24
+12V
AMP
14
2,7
POWER
EQUALIZER
13
1,3,5,
7,9,
IC2 16P
11,12 IC3 16P
CN602-4P
LPF
+V
1,7
CN105-4P
+12V
2,3,5,6
8
IC101 8P
+12V
1,7
CN106-9P +12V +12V
2
1,3
MUTE H.P
RELAY AMP
5,6,7,8
RY101
IC103 8P
+12V
IC104 3P
3 +12V
REG.
+V
CN102-6P
+B
P-120/P-120S
3 +12V 1
+12V +B
REG.
IC18 3P
1 +5V 6
UP REG.
IC27 6P
SUPER
CAP.
C28
+3.3V
3 1
+3.3V +5D
REG.
IC15 3P
3 1
+5D
RESET RESET
IC12 3P
+V
18
15
AMP
14
L ch
SPEAKERS
IC1 18P
R ch
PNL
MASTER
VOLUME
&
BRILLIANCE
A: 81-87,89,94,98,99,106,108,110,112,114,116,118,122
B:
7,35,49,61,77,91,148
C: 8,36,50,60,78,92,100,120,134,144,148,162
D: 23-34,37-40,48,51-59,62-73
E: 2-15,17-21,23,25-28,31
F: 1-10,14-21,23-30,32-42
G: 2-23,28-36,39-46
H: 1-5,7-10,18-21,24-27,35-38,40-44
I: 8,36,50,60,78,92,100,120,134,144,148,162
J: 7,35,49,61,77,91,147
K:
125-132,135-142,145-147
28CA1-8821527
P-120