A
B
C
D
E
F
G
H
1
2
3
4
5
6
I
J
K
7
8
GX-700/GX-700VCD
■
SCHEMATIC DIAGRAM (GX-700 OPERATION)
* 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.
IC810 :
µ
PC4570HA
Dual OP-Amp
V
O1
2
–Vm
1
3
+Vm
1
4
V
EE
5
+Vm
2
6
–Vm
2
7
V
O2
8
V
CC
9
V
CC
1
1
–
+
–
+
2
IC814 : YSS247-D
YMERSION
AIL
CL
FCL
FOL
WL
TA
L
TBL
AO
L
AIR
AVDD
VREF
SW
AVSS
FOR
WR
TA
R
TBR
AO
R
VREF
LOGIC
COMPARATORS
TO SWITCHES
11
14
17
13
15
8
3
2
1
24
23
22
12
5
20
19
18
+1
+1
SWITCH
SWITCH
SWITCH
FILTER
FILTER
YMERSION
TONE CONTROL
–1
SWITCH
SWITCH
SWITCH
–1
+1
+1
CR
FCR
10
7
6
IC815 : M66004MASP
FL Driver
P1
18
17
DISPLAY
CONTROL
REGISTER
OUTPUT
PORT
(2BIT)
SERIAL
RECEIVE
CIRCUIT
DIGITAL
OUTPUT
CIRCUIT
DISPLAY
CONTROLLER
CLOCK
GENERATOR
P0
XOUT 20
XIN
21
CS 14
SCK 15
SDATA 16
RESET 13
DIG00
12
61
DIG15
DIG12
64
1
DIG11
SEG00
59
23
SEG35
SEG27
31
33
SEG26
SEGMENT
OUTPUT
CIRCUIT
DISPLAY CODE
REGISTER
(8BITx16)
CGROM
(35BITx160)
DECODER
CGRAM
(35BITx16)
DECODER
CODE
SELECT
CODE
WRITE
RAM
WRITE
CORD/
COMMAND
CONTROL
CIRCUIT
MUTING
BUFFER
YMERSION
FL
DRIVER
2.5
2
.5
2.5
2.5
2.5
2.5
2.5
2.5
4.9
1.6
0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0
0
0.9
4.9
4.8
0.6
0
0
0
0
0
0
0
0
0
0
0
11.2
11.1
4.9
0.7
0.7
-10.8
0
0
0
0
0
0
0
5.3
5.5
4.8
4.8
4.8
4.2
4.2
5.5
5.5
4.0
3.3
-26.8
-21.4
-24.8
-24.8
-24.8
-24.8
-24.8
4.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.9
-25.0
-25.0
-25.0
4.6
4.2
~
~
~
~
~
~
~
~
~
4.6
4.8
2.2
2.2
-26.8
0
-24.8
-24.8
-21.0
-21.0
-25.0
-25.0
-25.0
-24.9
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
-21.0
-21.0
7
9
8
2
5
6
4
3
70
P68
H-1
P68
G-9
P68
H-9