Yamaha DP-U50 Service Manual page 34

A B C
DP-U50
I
SCHEMATIC DIAGRAM (MAIN & OPERATION)
1
Q Q
7
3
2
3
4.8
TO DSP
P-E38/J36
N-3
4
TO OPE (2)
SAME PAGE
I-6
5
TO DSP
P-E38/J36
N-5
T E
L 1 3
6
7
TO DSP
P-E38/J36
N-1
8
9
TO OPE (2)
SAME PAGE
I-7
w w w
10
E-39/J-37
D E F
CIRCUIT CHANGES BY MARKET.
1 5
6 3
0
0.7
16.6
0 14.5 16.8
9.0
0
14.5
15.1
0
4.9
16.8
4.3
0
0
15.1 4.3
0.5
0
0
0
5.6
5.6
-15.1 4.9
4.8
0.5
-14.3
-14.3
-15.1 -16.9 4.9
4.9
-14.5
-16.6
-16.9
A MUTE
0.1
14.5
0.1 0.1
0.1
-14.3 14.5
0
0
0 -0.3
0
0
0
-14.3
0.1
0.1
0.1 0
0.1 0.4
0
-14.5
-14.5
0 14.5
0
0.1
9 4 2 2 9 6 5 1 3
0.1
0
0
-14.5
-5.7
-5.7
-6.3
x a o
FL DRIVER
. i
-17.9
-17.5
-17.5
G http://www.xiaoyu163.com H
1 5
0
5.6 5.6 5.6 10.5 5.6 0 9.5 5.6 0 9.5
4.9 4.9
0.7
0.7
0
0
9.5
4.6 4.3
0 -20.6
POWER SUPPLY
-21.2
9.5
-22.2 -21.2
4.6
0 4.3
5.6
-16.8 0
16.6
0
0
0 -11.1
-11.1
0
-22.2
5.1
0
10.5
5.1
S MUTE
0
-14.2 -14.2
0
Q Q
3 7
-1.0
~
-16.8
-20.4
-20.4
~
~
-20.4
-16.8
u 1 6 3
-16.8 y
-2.1
-6.7
-6.1
-6.2
-6.2
-3.6
http://www.xiaoyu163.com
I J K
IC10, 11 : PQ05RD11
+5.0V Regulator
1 2
VIN VO
2 4
8 9 I C
4 CV
3
GND
TO OPE (1)
SAME PAGE
I-9
-16.5
-15.8
0
-15.8
-15.8
-16.5
-15.8
FROM POWER TRANS
AC4.3
AC9.0
FROM POWER TRANS
AC18.3 AC27.5
IC301 : LC75710NE
FL Display Driver
FROM POWER CORD
G6 49 32
G5 50 31
51 30
G4
G3 52 29
G2 53 28
G1 54 27
VFL 55 26
TEST 56 25
VSS 57 24
OSCO 58 23
OSCI 59 22
VDD 60 21
RES 61 20
CE 62 19
CL 63 18
DI 64 17
FROM POWER TRANS
6 3 1 5 1 5 0 8
TO MAIN (1)
SAME PAGE
C-4
TO OPE (1)
SAME PAGE
C-9
TO MAIN
SAME PAGE
J-2
m
c o
.
L M N
IC6, 8 : µPC4570HA
IC7 : BA15218N
Dual OP-Amp Dual OP-Amp
+ +
– –
1 2 2
9 8 9 9
– + + –
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8
V CC V O1 –Vm 1 +Vm 1 V EE +Vm 2 –Vm 2 V O2 V CC
CG
DI ROM
CL SHIFT DC RAM AM1
REGISTER
AM32
CE CG AM2
AM31 ROM
AM30
AM29
ADDRESS ADDRESS AD
AM28 VDD AM35
REGISTER COUNTER RAM
AM27 AA1
VSS
AM26 BLINKCYCLE BLINK AA2
AM25 REGISTER GENERATOR
VFL AA3
AM24 AA4/G16
AM23 RES DISPLAY DISPLAY
REGISTER CONTROL AA5/G15
AM22
TEST AA6/G14
AM21 DUTYCYCLE DUTY AA7/G13
AM20 REGISTER GENERATOR
AA8/G12
AM19 G11
AM18 GRID GRID
G10
REGISTER CONTROL
AM17
INSTRUCTION
CONTROL
DECODER
OSC I
G2
TIMING
OSC DIVIDER GENERATOR DECODER G1
OSC O
9 2 4 9 8 2 9 9
1SS133 UDZ3.6B S1VB20
MTZJ16.0A
Anode
MTZJ22.0C
Cathode –
+
S4VB20 2SA1708 (S, T) 2SC2412K (Q, R, S)
2SD1858TV2 (Q, R)
C
E
B
B
C
E
2SC2878 (A, B)
2SC1740S (R, S) 2SB1565 (E, F)
DTA114ES 2SD2396 (J, K)
DTA124ES
DTC114ES
DTC124ES
B
C
E E
C B
B C
E
AN78N09 NJM78M05FA PQ05RD11
1: VIN
2: VO
1: OUTPUT
1:INPUT 3: GND
2: COMMON
2:COMMON
1 2 3 2 1 4: VC
3:OUTPUT 3: INPUT
3 1
4
µPC4570HA
BA15218N LC75710NE
48 33
49 32
8
9
64 17
1 1 1 16
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
O