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19
KDC-MP225,MP4026/G
KDC-W4527/G/GY/Y,W427Y
P
Q
R
S
T
1
2
3
4
5
6
7
X16-264x-xx/2652-xx (1/2)
10K
10K
0V
0V
5V
0V
1.6V
3.3V
5.0V
5.0V
OFF
ON
5V
0V
0V
5V
0V
5V
0V
OFF
ON
5V
0V
5V
0V
5V
0V
0V
5V
IC2
IC1
∗
ED1 (SEGMENT)
∗
ED1 (COMMON)
SWITCH UNIT (X16-26xx-xx)
to MAIN UNIT
ILLUMINATION
KEY
∗
Q2
∗
Q3
RESET
CONTROL
REMOTE
S23
LCD DRIVER
J1
SW
Q1
IC
SW
∗
A
D36
D35
D34
D33
D32
D31
KI2
+5V
S8
S8
RST
D-GND
PAN 5V
LED+B
NC
ILL-GND
L-RES
L-DATAL
L-CE
L-CLK
L-DATAS
+B
+B
KEY
Q2,3
1
∗
R12
∗
R13
2.2K
2.2K
S5
S4
S7
S6
RED
GREEN
2
3
S7
S6
S5
S4
5
4
6
7
8
6
TP2
TP1
+5V
1
2
TP4
TP3
5
3
4
+B
4.7
C2
0.01
IC2
+5V
79
80
78
77
76
TP7
TP6
TP5
7
8
470
1K
TP9
TP10
TP8
10
9
11
470
470
1K
GND1
GND2
2
4
VCC
OUT
1
3
74
4.7K
L-DATA S
L-DATA L
76
47K
78
80
79
76
77
L-CE
79
80
L-CLK
77
78
L-RES
1000P
R1 56K
C1
75
OSC
TEST
KI5
KI5
C3 0.047
C4 0.047
+5V
73
72
VSS
VDD2
71
70
VDD1
VDD
KI4
KI3
68
69
KI4
67
KI3
S18
S18
S13
S10
S9
S12
S11
S15
S14
S17
S16
S13
S12
S11
S10
S9
11
9
10
13
12
S17
S16
S15
S14
16
15
14
17
18
S19
S20
S23
S21
S22
S24
S23
S21
S22
S19
S20
21
20
19
23
22
S24
24
32
S27
27
S25
S26
26
25
S29
S28
28
29
S31
S32
S30
31
30
37
S35
S33
S34
33
34
S36
S37
35
36
S40
S38
S39
38
39
40
C2
COM2
SW5V
REMO
PANEL SW
ESD-GND
47
TP13
TP11
13
12
14
R11
+5V
TP12
TP14
15
C5
2.2
64
KI1
65
66
KI1
KI2
KS3
KS5
KS4
KS6
63
61
62
S56
KS2
COM3
60
58
59
57
KS3
KS5
KS4
KS2
S56
C3
16
3
2
1
4
5
11
10
8
6
7
9
15
14
13
12
20
19
18
17
21
25
26
22
23
24
29
30
27
28
31
36
35
34
33
32
S47
S47
S52
S53
S54
S55
COM1
54
56
55
52
53
S49
S48
S50
S51
49
50
51
48
47
S52
S55
C1
S53
S54
S50
S51
S48
S49
S42
S44
S43
S46
S45
44
45
46
42
43
S41
41
S46
S45
S42
S43
S44
S41
47
42
40
39
38
37
41
46
45
44
43
52
50
48
49
51
54
55
53
16
3
2
1
4
5
11
10
8
6
7
9
15
14
13
12
20
19
18
17
21
25
26
22
23
24
29
30
27
28
31
36
35
34
33
32
47
42
40
39
38
37
41
46
45
44
43
52
50
48
49
51
54
55
53
C1
C2
∗
W2
1K
R10
R2
R9
R8
R7
R6
R5
R4
R3
S53
S56
S55
S43
S51
S50
S49
S52
S54
S4
S7
S6
S5
S8
S9
S45
S48
S47
S17
S16
S15
S14
S12
S10
S13
S11
S36
S37
S38
S39
S35
S40
S42
S44
S46
S41
S26
S27
S24
S22
S23
S25
S20
S18
S19
S21
S34
S33
S32
S30
S28
S29
S31
ESD-GND
CAUTION : For continued safety, replace safety critical components only with manufacturer’s recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried
out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual
instruments or/and units.