Sharp XE-A203 Service Manual - Page 21

Key If Circuit

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XE-A203U/XE-A203A CIRCUIT DIAGRAM AND PWB LAYOUT - 19 - 8 7 6 5 4 3 2 ■ KEY IF CIRCUIT FOR MAIN DISPLAY KEY VLED D 1 2 3 G7 G8 G9 G10 4 5 G1 G2 6 G3 7 G4 8 G5 9 10 G6 a 11 b 12 c 13 d 14 e 15 f 16 g 17 dp 18 CON2 P:2.0mm HOLE ONLY IC18 C DP1 1 G1 2 F1 3 E1 4 D1 5 C1 6 B1 7 A1 8 9 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 18 17 16 15 14 13 12 11 10 dp g f e d c b a KID65083AP(DIP) KTA1664 * 3 KRA101M * 10 or DTA143ESA CN13 52806-1510 G1 G2 G3 15 14 G4 G5 13 12 G6 11 G7 a 10 9 b c 8 7 d 6 e f 5 4 g dp 3 2 1 R129 12K 1 3 R130 12K Q11 1 3 R131 12K Q12 1 3 R132 12K Q13 1 3 R133 12K Q14 1 3 R134 12K Q15 1 3 R135 12K Q16 1 3 R136 12K Q17 1 3 R137 12K Q18 1 3 R138 12K Q19 1 3 Q20 KTA1663 * 7 2 2 2 2 2 2 2 2 2 2 R139 120 R140 120 R141 120 R142 120 R143 120 R144 120 R145 120 R146 120 R147 120 R148 120 1 1 1 1 1 1 1 1 1 1 3 Q21 3 Q22 3 Q23 3 Q24 3 Q25 3 Q26 3 Q27 3 Q28 3 Q29 3 Q30 2 2 2 2 2 2 2 2 2 2 /S[0..9] G1 /S0 G2 /S1 G3 /S2 G4 /S3 G5 /S4 G6 /S5 G7 /S6 G8 /S7 G9 /S8 G10 /S9 G[1..10] VCC CN12 52045-3445 34 33 32 31 30 A1 B1 29 28 C1 D1 27 E1 26 25 F1 G1 24 23 DP1 22 /S0 21 20 /S1 /S2 B 19 18 /S7 /S8 17 /RESET 16 15 P90 P91 14 13 P92 P93 12 P94 11 10 P95 P96 9 8 P97 /S9 7 /VON 6 5 /S3 4 3 /S4 /S5 2 /S6 1 2 1 FOR POP UP VLED + C71 100uF/16V VLED C72 0.1uF FROM KEY CN15 52045-0745 VCC R121 R122 R123 R124 R125 R126 R127 47K 47K 47K 47K 47K 47K 47K P[90..97] 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 /S0 /S1 /S2 MDR /S3 /S4 /S5 /S6 /S7 P97 P96 P95 P94 P93 P92 P91 FROM MODE SWITCH P:2.0mm HOLE ONLY CON3 P90 VCC R128 47K C73 100pF /VON /RESET /S1 D30 2 1 1SS133 /S0 D20 2 /S1 D21 2 /S2 D22 2 /S3 D23 2 /S4 D24 2 /S5 D25 2 /S6 D26 2 /S7 D27 2 /S8 D28 2 /S9 D29 2 1 1SS133 1 1SS133 1 1SS133 1 1SS133 1 1SS133 1 1SS133 1 1SS133 1 1SS133 1 1SS133 1 1SS133 FROMKEY FROM MAIN BOARD C A B 3.5K 300 2SD2170 E I NPUT 2.7K 7.2K 3K KID65083 COMMON OUT PUT GND INPUT 4.7K 47K OUT P UT COMMON KRA101M, KRA106S 8 7 6 5 4 3 2 1 1/1 CN1 12 11 D 10 9 8 7 6 5 4 3 2 1 C 52045-1245 B A 1

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XE-A203U/XE-A203A
CIRCUIT DIAGRAM AND PWB LAYOUT
– 19 –
OUT P UT
KID65083
KRA101M * 10
I NP UT
2SD2170
B
FROM MAIN BOARD
C
FROMKEY
E
or DTA143ESA
GND
KTA1663 * 7
FROM MODE SWITCH
FOR POP UP
COMMON
KTA1664 * 3
KRA101M, KRA106S
FROM KEY
FOR MAIN DISPLAY KEY
INPUT
OUT P UT
COMMON
G7
G1
P93
/VON
/S8
G8
/S3
/S5
/S1
/S1
/S4
G6
G4
/S0
/RESET
/S6
/S4
A1
g
D1
e
P95
/S4
G1
dp
B1
e
/S2
G3
d
/S3
G4
c
/S6
G7
G8
/S2
/S7
/S2
/S6
P92
/S8
G5
G9
G1
G3
C1
P91
P90
/S1
G9
/S7
G2
a
/S0
G7
/S1
/S5
G6
/S8
/S1
/RESET
E1
c
/S0
G5
G5
G4
P90
/S3
P96
/S5
/S7
/S2
/S5
dp
/S7
F1
d
G2
MDR
P94
/S3
/S4
G1
/S0
G6
/VON
/S6
G2
DP1
b
f
P97
G3
g
c
b
a
F1
dp
C1
d
A1
a
B1
e
D1
f
f
g
E1
b
G10
G10
VLED
P92
P94
P95
P96
P91
P97
P93
/S[0..9]
P[90..97]
/S9
/S9
/S9
G[1..10]
G1
DP1
VCC
VLED
VCC
VLED
VCC
Q19
1
3
2
R125
47K
R124
47K
D30
1SS133
1
2
Q14
1
3
2
R137
12K
Q29
3
1
2
Q23
3
1
2
47K
R138
12K
C72
0.1uF
D23
1SS133
1
2
R147
120
CN13
52806-1510
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
D24
1SS133
1
2
D25
1SS133
1
2
Q27
3
1
2
D26
1SS133
1
2
R142
120
Q18
1
3
2
Q12
1
3
2
4.7K
C73
100pF
CN12
52045-3445
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
R144
120
R126
47K
R127
47K
R121
47K
Q24
3
1
2
R131
12K
2.7K
Q30
3
1
2
R132
12K
R140
120
7.2K
D21
1SS133
1
2
Q11
1
3
2
D22
1SS133
1
2
CN15
52045-0745
1
2
3
4
5
6
7
3K
Q15
1
3
2
Q17
1
3
2
R128
47K
D27
1SS133
1
2
D20
1SS133
1
2
Q21
3
1
2
+
C71
100uF/16V
1
2
D28
1SS133
1
2
R145
120
D29
1SS133
1
2
Q28
3
1
2
R143
120
R148
120
R129
12K
R141
120
R133
12K
Q25
3
1
2
CN1
52045-1245
1
2
3
4
5
6
7
8
9
10
11
12
R134
12K
R146
120
Q22
3
1
2
Q20
1
3
2
R135
12K
Q16
1
3
2
Q13
1
3
2
IC18
KID65083AP(DIP)
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
P:2.0mm HOLE ONLY
CON2
18
17
16
15
14
13
12
11
10
9
7
8
6
5
4
3
2
1
R136
12K
CON3
P:2.0mm HOLE ONLY
8
9
10
11
12
13
5
1
7
2
4
6
3
R130
12K
R122
47K
3.5K
300
R139
120
R123
47K
Q26
3
1
2
A
B
C
D
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
D
C
B
A
1/1
■
KEY IF CIRCUIT