Overall Circuit Diagram - Yamaha MU100 Service Manual

A B C
MU100 OVERALL CIRCUIT DIAGRAM
DM
LINE TRANSCEIVER
to HOST
NC
HOST SELECT
INVERTER
Photo Coupler
ANALOG SWITCH
MIDI
INVERTER
NC
EP ROM 16M S RAM 1M
BU 5
BUFFER
to EXPANSION BOARD
NC
NC
DRAM-4M
to PVR-CN14
NC
Heat sink
REGULATOR
DC IN
REGULATOR
D E F
CONVERTER DC-DC
NC
NC
NC
NC
NC
NC
RESET
HD6432655
CPU
NC
OR
INVERTER
NC
NC
NC
NC
NC
SWP 30
NC
NC
G H I
to LCD UNIT
LCD UNIT
LCD cable
MULTIPLEXER
HD74LVC139FP
IC40
LMA22 2 4 CSLMA0
A Y0
LMA23 3 5 CSLMA1
B Y0
6 CSLMA2
Y0
1 7
LMA22 G NC
Y0
DECORER
WAVE ROM1 32M
HD74LVC139FP
IC40
+50
0.1 ( ) 16
C183 Vcc
8
GND
DECORER
GND
HD74LVC139FP
IC40
14 12 CSHMA0
A Y0
13 11 CSHMA1
Y1
B
10 CSHMA2
Y2
15
C Y3 9 NC
WAVE ROM 2 32M
J K L
DA CONVERTER
OP AMP
OP AMP
AD CONVERTER
AD FRONT END
D-FF
TRANSCEIVER
ROM1 16M ROM3 32M
ROM 2 16M ROM4 32M
28CA2-8811649
2
M N O
MU100
1
HSJ0912-01-010
2
L JK7
10
NC
11 PHONES
NC H.P
3
1 R
10X2P
10X2P
CN7
2
1 PVR
L68 56u
2
L69
3 56u FQ
L70
4
21B0505 A10KX25W
5
6
7
8
9
POWER/
10 VOL.
VR2
3X2P
CN14
7 1
to DM- 1
2 NC 8 2
CN13
3
3
OUTPUT R
OUTPUT L
INPUT R
INPUT R
A/D INPUT
4
A/D INPUT
ANALOG SWITCH
5
PSW
LED1 LED2
PLAY
EDIT
GND
LED3 LED4
6
UTIL EFFECT
LED5 LED6
CN10
MODE EQ
1
2
3
4
SW 1 SW 2 SW 7 SW 8 SW 9
5
6
PLAY 1 2 EDIT 1 2 MUTE/ 1 2 PART– 1 2 PART+ 1 2
7
SOLO
8
9
10
11
12
13
14
SW 3 SW 4 SW 10 SW 11 SW 12
15
16 UTIL 1 2 EFFECT 1 2 ENTER 1 2 SERECT< 1 2 SERECT> 1 2 7
17
GND
SW 5 SW 6 SW 13 SW 14 SW 15
MODE 1 2 EQ 1 2 EXIT 1 2 VALUTE– 1 2 VALUTE+ 1 2
8
: Carbon resistor 1/10w
: Carbon resistor 1/4w
: Tantalum capacitor
: Electolytic capacitor
: Monolithic ceramic capacitor
: FL coil
: EMI filter
MJM78L05UA(XJ598A00) µPC2933T(XS516A00)
9
REGULATOR +5V REGULATOR +3.3V
2
1
2
3
1
1:OUTPUT 1:V in
3
2:COMMON 2:GND
3:INPUT 3:V out
µPC2909T(XT441A00) SI-8050C(XT442A00)
REGULATOR +9V REGULATOR +5V
2
1
10
3
1 1:V in
5
2
4 2:SW out
3 1:V in
3:GND
2:GND 4:V os
3:V out 5:S.S
11
27