A
B
C
D
E
G
H
1
2
3
4
5
6
I
J
K
L
7
8
DVR-S120/NX-P120
78
■
DVR-S120 SCHEMATIC DIAGRAM (MAIN 3/3)
FL DRIVER
-11.8
-21.2
-13.7
-10.7
-10.3
-8.3
-8.3
-8.1
-10.7
-7.1
-7.1
-8.2
-8.2
-9.9
-8.1
-6.5
-11.8
-19.0
-19.1
-19.1
-19.0
4.9
4.9
-19.1
-19.0
-19.0
-19.0
-19.0
-19.0
-19.1
-17.2
-13.6
-21.0
-21.0
-21.0
-15.4
-19.1
-19.0
-17.3
-13.5
-13.3
-11.8
-8.2
-8.3
-9.9
-13.6
-8.2
-21.0
-15.4
-19.1
-11.7
-8.2
-21.0
-17.0
-21.0
-9.9
-8.1
-17.3
-13.5
-17.2
-9.9
-10.0
-19.1
-17.2
-19.1
-11.9
-10.0
-19.1
-15.4
-17.2
-11.8
-15.5
-10.0
-6.5
-11.8
-17.2
-19.1
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
-13.3
-19.0
-17.2
-9.9
-10.0
-19.1
-17.2
-19.1
-11.9
-10.1
-19.1
-17.2
-11.8
-15.4
-15.5
-10.0
-19.0
-19.0
-19.0
-19.0
-19.0
-19.0
0
0
0
0
4.8
4.8
4.8
2.4
2.4
-21.2
-11.7
-7.1
-7.1
4.9
4.9
4.9
4.9
(1)
* All voltages are measured with a 10M
Ω
/V DC electronic 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.
IC221 : LC75712E
FL Display Driver
DI
SHIFT REGISTER
CG
ROM
DC
RAM
C
O
N
T
R
O
L
L
A
T
C
H
64
CL
63
CE
L
A
T
C
H
A
N
O
D
E
D
R
I
V
E
R
62
TEST
56
VFL
55
VDD
60
VSS
57
RES
61
OSCI
59
OSCO
58
CG
RAM
AD
RAM
ADDRESS
COUNTER
ADDRESS
REGISTER
GRID
CONTROL
GRID
REGISTER
AM1
AM2
AM35
D
E
C
O
D
E
R
G
R
I
D
D
R
I
V
E
R
G1
G2
G10
G11
AA1
AA2
AA3
AA4/G16
AA5/G15
AA6/G14
AA7/G13
AA8/G12
BLINK
GENERATOR
DUTY
GENERATOR
BLINKCYCLE
REGISTER
DISPLAY
CONTROL
DISPLAY
REGISTER
DUTYCYCLE
REGISTER
CONTROL
INSTRUCTION
DECODER
DIVIDER
TIMING
GENERATOR
OSC
1
2
35
36
37
38
39
40
41
42
43
44
45
53
54
w w w
.
x i a o y
u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299