A
B
C
D
E
F
G
H
1
2
3
4
5
6
I
J
K
L
M
N
O
7
8
9
10
DP-U50
■
SCHEMATIC DIAGRAM (MAIN & OPERATION)
E-39/J-37
* All voltage are measured with a 10M
Ω
/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.
S MUTE
A MUTE
POWER SUPPLY
0
0
0.7
4.8
4.8
5.6
5.6
-14.3
-14.3
0.1
0
-14.3
14.5
0.1
0.1
0.1
0
0.1
-14.3
0.1
0.1
0.1
-14.5
14.5
0.1
0
0
0
0
0.1
-14.5
5.6
5.6
5.6
0
10.5
0.7
0.7
0
5.6
0
4.9
9.5
5.6
0
4.9
9.5
9.0
0
14.5
14.5
16.6
15.1
16.8
0
16.8
4.9
4.3
4.3
0
0
0.5
0
15.1
0
0
-15.1
-15.1
-14.5
-16.6
-16.9
-16.9
4.9
0.5
4.9
4.9
0
16.6
0
-16.8
14.5
-0.3
0
0
0
0
0.4
-14.5
0
0
-14.2
-14.2
0
0
9.5
4.3
0
4.6
9.5
4.6
0
4.3
-20.6
-22.2
-21.2
-21.2
0
-15.8
-16.5
-16.5
-15.8
-15.8
-15.8
AC4.3
AC9.0
AC18.3
AC27.5
5.6
0
0
-11.1
0
-22.2
-11.1
5.1
0
10.5
5.1
CIRCUIT CHANGES BY MARKET.
FL DRIVER
0
5.1
5.1
0
0
0
0.7
3.4
5.0
5.0
2.2
5.0
3.4
0.1
3.5
0
0
0
0
-17.5
-17.5
-17.4
-13.6
-6.2
-6.2
-6.1
-6.7
-2.1
-16.8
-16.8
-20.4
~
~
-20.4
-16.8
~
-0.1
-9.3
-9.3
-9.3
-9.8
-1.0
-17.5
-17.5
-17.5
-17.5
-20.4
-17.5
-17.5
-17.4
-17.5
-17.5
-17.5
-17.5
-17.5
-17.5
-17.9
-6.3
-5.7
-5.7
-5.6
-3.5
-13.0
-20.4
-16.8
-1.0
-9.8
-20.4
-16.7
-20.4
-9.3
-17.6
-20.9
-5.7
-5.7
-6.3
-17.9
-17.5
-1.0
~
-16.8
-20.4
-20.4
~
~
-20.4
-16.8
-16.8
-2.1
-6.7
-6.1
-6.2
-6.2
-3.6
-5.6
-9.3
-3.5
-13.0
-20.4
-16.8
-1.0
-9.8
-20.4
-16.7
-20.4
-1.0
-9.8
-9.3
-9.3
-9.3
-17.5
-17.5
-17.5
-17.5
-17.5
-17.4
-20.9
0
0
2.4
2.4
4.9
4.8
0
4.8
0
IC301 : LC75710NE
FL Display Driver
G7
G8
G9
G10
G11
AA8/G12
AA7/G13
AA6/G14
AA5/G15
AA4/G16
AA3
AA2
AA1
AA35
AA34
AA33
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
G6
G5
G4
G3
G2
G1
VFL
TEST
VSS
OSCO
OSCI
VDD
RES
CE
CL
DI
AM32
AM31
AM30
AM29
AM28
AM27
AM26
AM25
AM24
AM23
AM22
AM21
AM20
AM19
AM18
AM17
AM1
AM2
AM3
AM4
AM5
AM6
AM7
AM8
AM9
AM10
AM11
AM12
AM13
AM14
AM15
AM16
ADDRESS
REGISTER
SHIFT
REGISTER
CONTROL
BLINKCYCLE
REGISTER
DISPLAY
REGISTER
DUTYCYCLE
REGISTER
GRID
REGISTER
INSTRUCTION
DECODER
ADDRESS
COUNTER
BLINK
GENERATOR
DISPLAY
CONTROL
DUTY
GENERATOR
GRID
CONTROL
CONTROL
DIVIDER
DECODER
OSC
TIMING
GENERATOR
LATCH
LATCH
ANODE
DRIVER
GRID
DRIVER
DC RAM
AD
RAM
CG
ROM
CG
ROM
AM1
AM2
AM35
AA1
AA2
AA3
AA4/G16
AA5/G15
AA6/G14
AA7/G13
AA8/G12
G11
G10
G2
G1
DI
CL
CE
VDD
VSS
VFL
RES
TEST
OSC I
OSC O
VO1
2
–Vm1
3
+Vm1
4
VEE
5
+Vm2
6
–Vm2
7
VO2
8
VCC
9
VCC
1
1
–
+
–
+
2
IC6, 8 :
µ
PC4570HA
Dual OP-Amp
IC7 : BA15218N
Dual OP-Amp
–
IN
1
2
+IN
1
3
–
V
CC
4
+IN
2
5
–
IN
2
6
OUT
2
7
+V
CC
8
OUT
1
1
–
+
–
+
VIN
VO
CV
GND
4
3
2
1
I C
IC10, 11 : PQ05RD11
+5.0V Regulator
AN78N09
NJM78M05FA
1: OUTPUT
2: COMMON
3: INPUT
3 2
1
µ
PC4570HA
BA15218N
1
9
1
8
1SS133
MTZJ16.0A
MTZJ22.0C
UDZ3.6B
2SC1740S (R, S)
DTA114ES
DTA124ES
DTC114ES
DTC124ES
E
B
C
B
C
E
2SA1708 (S, T)
2SD1858TV2 (Q, R)
2SB1565 (E, F)
2SD2396 (J, K)
S1VB20
Anode
Cathode
B
C
E
2SC2878 (A, B)
C
E
B
2SC2412K (Q, R, S)
B
C
E
12
3
1:INPUT
2:COMMON
3:OUTPUT
1: VIN
2: VO
3: GND
4: VC
4
1
PQ05RD11
LC75710NE
33
32
17
48
49
64
16
1
+
–
S4VB20
SAME PAGE
I-9
TO OPE (1)
FROM POWER TRANS
SAME PAGE
C-4
TO MAIN (1)
SAME PAGE
C-9
TO OPE (1)
SAME PAGE
J-2
TO MAIN
FROM POWER TRANS
FROM POWER CORD
FROM POWER TRANS
P-E38/J36
N-3
TO DSP
SAME PAGE
I-6
TO OPE (2)
P-E38/J36
N-5
TO DSP
P-E38/J36
N-1
TO DSP
SAME PAGE
I-7
TO OPE (2)