Yamaha YSP-3000 Service Manual page 86

A B C
YSP-3000/YSP-30D/HTY-7030
POWER 2/2
1
2
3
W801
Page 81 J2
to INPUT_CB8
4
0 0
0 0
5
6
7
3.3
-29.8
8
-29.7
9
POWER (2)
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
10
86
D E F
5.5
IC801
5.5
0
0
JK802
5.5
IC801
5.5
11.1
5.5
4.8 JK801
11.1
IC802
4.8
4.8
5.1
2.8
0
IC802
2.8
0
4.8
POWER (4)
-31.9
-29.8
-19.9
-29.8
-18.1
-15.9
-25.9 -27.7
DRIVER
-25.8 -19.9
-25.9 -19.9
-21.9 -19.5
IC901
-25.1 -15.6
-24.0 3.3
-16.1 1.6
1.6
3.3 3.3 -23.9
-25.9 0
-29.8 -29.8
0
3.3
-29.6 -29.6
-29.8 3.3
-29.8 3.3
G H I
W951
IC951
W952
POWER (5)
(B model)
-32.1
3.3 3.3 3.3 -19.5
-26.8
12.0
-15.6 -19.5
4.9
-15.6 -19.4 -19.3
5.2
5.2
4.9
4.9
0
0
3.3 3.3
-29.8
-27.7 -29.5
-27.5
IC801, 802: NJM2068MD-TE2
Dual operational amplifier
OUT 1 8 +V
1 CC
–IN 2 7 OUT 2
1
+ – + –
+IN 1 3 6 -IN 2
4 5 +IN
–V CC 2
J K L
IC953
CB951
IC952
W901
CB902
0.2
W991
CB903
3.3
3.3
3.3
3.3
IC902
0
IC902: TC7SH08F IC951: PQ012FZ01ZPH
2-input AND gate Voltage regulator
DC input DC output
IN B 1
5 V CC 1 3
(Vin) (Vo)
A B Y
L L L
IN A 2 Specific IC
L H L
Bias power supply ON/OFF control
2 4
H L L (VB) (Vc)
GND 3 4 OUT Y
5
H H H
GND
M N
POWER (3)
IC901: M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
Display code
CGROM
RAM
(35-bit x 166) 44 SEG00
(8-bit x 60)
Segment 19 SEG25
Code
write output
17 SEG26
circuit
CGROM SEG34
CS 2 Serial dot data (35-bit x 16) 9
data write
SCK 3 receive
Code/
SDATA 4 circuit
command
45 SEG35
control
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
Segment/
code DIG13/
Digit 50
select SEG40
select/ DIG14/
49
XIN 7 Clock output SEG39
timing Display
generator
clock controller scan pulse circuit 48 DIG15/
XOUT 6 SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
DIG00
63
Digit
RESET 1 output
circuit
Vcc1 8
53 DIG10
Vcc2
18
Vss 5
Vp 64