Yamaha SPX50D Service Manual page 28

Ref.
No.
Part
No.
Description
SB
a ^
Remarks
7
C
I/E981700
1/E981900
VE985200
VF063400
2
i
rcu
i
t
Board
'
i
rcu
i
t
Board
3
i
rcu
i
t
Board
Circuit Board
ID
'P
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'V
A D
"
b
F P
-
b
•
P
W
S'
-
b
P
W
S'
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b
J.U.C
H.D
m
; i
rcu
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Board
IC
IC
IC
IC
40
IJH4558DV
45238P
IR9311
rC4053BP
A D
S'
-
b
I
C
1
C
I
C
JLC
OP AMP.
OP AHP.
COHPARATER
MULTIPLEXER
52
03
04
04
05
IG124300
1G142250
IR000250
IR001450
TR003250
IC
IC
IC
IC
TC
?ST518A
SN74HCU04N
5N74HC02H
SH741IC14H
3N74HC32N
RESET
INVERTER
NOR
INVERTER
OR
03
01
03
05
03
IR007450
IR013950
IR017450
1R024550
XA379001
IC
IC
IC
IC
IC
SN74HC74N
SN74HC139H
SN74HC174H
SH74HC245H
HD74LS266P
D
FF
DECODER
D
FF
TRANSCEIVER
EX-HOR
04
05
05
06
03
1G147300
XE386A00
1G122300
IG148500
XF035AO0
IC
IC
IC
IC
IC
HD63B50P
IID6303Y
HB81418-12
TC5565L-12, 15
HBH27C512-25
ACIA
CPU
DRAM 64K
RAH
OTPR
09
09
11
21
10
IT380400
IT380700
XA566001
XC282001
1*000-170
IC
1C
IC
IC
YH3804
YH3807
PCH54HP
YH3901
TI.P552
I
c
I
c
I
c
I
c
y
V
-f\
-y
y
DSP
HOD
DAC
ADA
17
15
12
15
06
VA024800
IA101521
IC181520
1X604200
VC845000
Disital
Transistor
Trans
I
stor
Transistor
Transistor
Transistor
DTC143XF
2SA1015
Y
2SC1815
Y
2SC2878 A.B
2SC3064 F.G
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1
03
03
03
03
01
IG138700
1F003450
IF002140
VB135500
VD753100
Transistor Array
Diode
Zener
D
i
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Triaier Po ten
t
i
one ter
Trinner Potentiometer
T062506P
1SSI33
RD5.6EB2
5.6V
B30K 3P EVN
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03
01
01
01
01
VF066200
11L313680
HZ002870
1IZ004730
V
A069700
Trimmer Potentiometer
Hetal
Oxide Film Resistor
Resistor Array
Res
i
stor Array
B50X
3P
EVH
6.8Q
IV
J
RHLS4
RHLS8-103J
RHI.S4-472J
LSI
S
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m
m
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7
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IR 4a
7
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01
01
01
02
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VD303500
VB835000
FZ004170
QU004800
KCOO
1
300
LC
F
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Coil
Se
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t
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Cera. Cap.
Ceramic Resonator
Relay
TFB-3D
FL5R2000HT
0.
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CSA4.00HG
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05
01
01
03
07
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LB202600
VF342200
VE981900
IG
1
36600
Phone Jack
DIH Jack
Circuit Board
IC
HLJ0520
5P
SK0266
2
FP
IR2E19
di
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7
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+
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INPUT,
OUTPUT
-HIDJ,
LED DRIVER
0 2
03
16
05
IF003450
VA262300
VA026000
VA902500
VUVAVROO
Diode.
.
LED
LED
Display
LED
D'i
sp
1
ay
Vnriahle Resistor
1SS133
LK242RP
RED
LH524RKS
SX-25K
AlOK
EWH-14A-
7'
s*
-
K
LED
ledt.i;z
7'L'Y
LED-r'.tiXT'b'Y
a
—
7
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—
V
R
SV
indicator
HEHORY display
He ter
('TirPTITs
LEVEL
0
1
01
05
06
03
KA907030
LB301800
VE985200
VF063400
Push
Sw
i
tch
Phone Jack
C
i
rcu
i
t
Board
K1IH10908
HLJ0544
PV
PV
y
-y
S'
a.
S
W
d-.
-
y
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7
P
W
S'
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b
P
W
S'
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Honaura
1
J.U.C
H.D
0
1
03
12
12
XC719001
XC720001
XC721001
IH000590
I
II
00
1
190
IC
IC
IC
Diode
HJH7805FA
NJH7812FA
HJH7912FA
lOE-1
S2VB20
2A
200V
I
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1
C
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it
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7'
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y
77
y
7
5V
12V
-12V
V
0
03
03
01
03
HV63922C
UV54922C
F138322C
FI38347C
F700-1
1
7f
Electrolytic Cap.
Electrolytic Cap.
CeramicCap.
Ceramic Cap.
Sem
i
conduct
i
V
e
Cera. Cap.
2200
u
F
16V
2200
u F
?5V
2200PF 400V
4700PF 400V
0.
1
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16V
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5 3
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5 3
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3
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b 7
3
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H.D
0 3
03
01
02
01
CD90076(
KA8036K
VF06540(
Coil
Push Svitch
LCD
Assembly
PLA3021A
ESB-8213A
16X2
3
-Y
Jb
r
S' 3.
S W'
LCD
A
S S
'
Y
POWER
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