11-6
SAM4S ER-420M/F SERIES
11-5 KEY SCAN PART
4
Dat
e
of
4
3
2
1
AB
Siz
e
3
2
1
B
Drawn by
Sheet
C
TITLE :
D
C
D
File Name
A3
Rev
Shin Heung Precision Co., Ltd.
4
Dat
e
of
4
3
2
1
AB
Siz
e
3
2
1
B
Drawn by
Sheet
C
TITLE :
D
C
D
File Name
A3
Rev
Shin Heung Precision Co., Ltd.
5
VCC
R122
4.7K
R123
4.7K
R124
4.7K
R125
4.7K
A(
3)
CS_KEYSCAN
A(
1)
D2
9
D2
8
D2
7
D2
6
3
CN14:C
5
CN14:E
7
CN14:G
_R
D
C
S
_EXTIN
CS_KEYSCAN
SEN_DISPDISCO
N
ALL_C
LEAR
SEN
_D
W
R
C
O
M
P
SEN_PEND_
R
SEN_PRTDISCO
N
SEN_PEND_J
ALL_CLEAR
3
CN16:C
ER420 MAIN.SC
H
ER-420 MAI
N
6
CN15:F
5
CN15:E
2
CN15:B
3
CN15:C
8
CN13:8
6
CN13:6
5
CN13:5
3
CN13:3
2
CN13:2
8
0x100008~0X10000F
A(
2)
A(
0)
VCC
100nF
C96
D2
4
D2
5
MMBD6050LT1
D2
2
D2
3
2
CN14:B
4
CN14:D
6
CN14:F
8
CN14:H
_R
D
D(0:7)
VCC
100nF
C100
VCC
MODESCAN_COMMON
2
CN16:B
2004.04.21
[Key Return]
4
CN15:D
7
CN13:7
4
CN13:4
V1.
4
VCC
1
CN14:A
CON-FPC;8P,2.54MM,ST
100nF
C82
VCC
VCC
R110
4.7K
R111
4.7K
R112
4.7K
R140
4.7K
R113
39
[Mode Key]
R144
39
R143
39
R142
39
R141
39
A
(0:19)
D(6
)
D(7
)
D(5
)
D(3
)
D(4
)
D(2
)
D(0
)
D(1
)
D(6
)
D(7
)
D(3
)
D(4
)
D(0
)
D(1
)
[All Clear Switch]
R137
39
R138
39
R139
39
R136
39
D(5
)
D(2
)
KEY BOARD PART
100nF
C103
VCC
1
CN15:A
CON-FPC;6P,2.54MM,ST
Hyun-Oh,Yu
n
[Key Scan]
8
GND
6
E3
9
Q6
4
E1
11
Q4
3
A2
13
Q2
1
A0
16
VCC
15
Q0
2
A1
7
Q7
5
E2
14
Q1
12
Q3
10
Q5
U27
74HC138
19
OE2
8
A6
9
A7
13
Y5
12
Y6
5
A3
6
A4
16
Y2
15
Y3
2
A0
3
A1
18
Y0
11
Y7
14
Y4
17
Y1
1
OE
1
7
A5
4
A2
10
GND
20
VCC
74HC541
U17
19
OE2
8
A6
9
A7
13
Y5
12
Y6
5
A3
6
A4
16
Y2
15
Y3
2
A0
3
A1
18
Y0
11
Y7
14
Y4
17
Y1
1
OE
1
7
A5
4
A2
10
GND
20
VCC
74HC541
U29
1
CN16:A
CON-NOWALL;3P,2.54MM,S
T
R133
10K
MMBD6050LT1
D1
8
1
CN13:1
CON-BOX;8P,2.5MM,ST(YH)
CPU PORT 10.3
ᴴㇵ
ADD(0x100000)
Summary of Contents for ER-420 Series
Page 2: ......
Page 23: ...3 Installation and Operation 3 8 SAM4S ER 420M F SERIES MEMO...
Page 27: ...5 Maintenance and Adjustment 5 2 SAM4S ER 420M F SERIES MEMO...
Page 43: ...6 Exploded Views and Parts List 6 16 SAM4S ER 420M F SERIES MEMO...
Page 44: ...SAM4S ER 420M F SERIES 7 1 7 PCB Layout and Parts List 7 1 Main PCB Layout...
Page 61: ...8 Troubleshooting 8 8 SAM4S ER 420M F SERIES MEMO...
Page 65: ...9 Block Diagram 9 4 SAM4S ER 420M F SERIES MEMO...
Page 67: ...10 Wiring Diagram 10 2 SAM4S ER 420M F SERIES MEMO...
Page 85: ......
Page 86: ...Shin Heung Precision May 2004 Printed in KOREA V1 0 Code No JK68 60958A...
