24
KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY
KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
AE
AF
AG
AH
AI
1
2
3
4
5
6
7
10K
10K
0V
ON
OFF
5.0V
0V
5.0V
3.3V
1.6V
0V
5V
0V
5V
0V
0V
5V
0V
5V
0V
5V
∗
ED1 (SEGMENT)
SWITCH UNIT (X16-247x-xx)
A
∗
ED1 (COMMON)
IC2
IC1
J1
Q1
J3
X34-
1/2
KEY DETECT
SW
RESET
LCD DRIVE
S23
REMOTE
CONTROL IC
∗
A
(BO
TT
OM VIEW)
∗
D32
∗
D33
∗
D34
∗
D35
14
S12
S10
15
16
S11
17
18
S14
S13
19
20
S15
21
22
S16
S17
23
24
25
26
27
28
29
30
S27
S19
S37
S39
S40
31
32
S38
33
34
S35
S36
S18
S23
S21
S20
S22
S25
S24
S26
S29
S28
S30
S31
S32
S33
1
2
6
4
3
5
7
8
10
9
11
13
12
S5
S34
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
1
2
6
4
3
5
7
8
10
9
11
13
12
S41
ILL-GND
D-GND
SW5V
N.C
LED +B
L-DATAS
L-CLK
L-CE
L-DATAL
PAN 5V
RST
PANEL-
ESD-GND
KI1
KI2
KI4
KI3
C3 0.047
C1
C4 0.047
0.01
R2 4.7
4.7K
63
64
62
61
64
63
61
62
R9 1K
R8 470
R6 470
R7 470
KS5
S5
S6
S7
S8
S9
KS4
KS3
KS2
C3
C2
C1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
KI5
1000P
+B
+B
+5V
+5V
C2
R3
1
3
OUT
VCC
2
4
GND2
GND1
2.2
+5V
+5V
C5
REMO
48
47
46
45
44
43
42
41
40
1
2
3
4
5
6
7
8
9
10
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
KS5
KS4
KS3
KS2
S41
COM3
COM2
COM1
KEY
N.C
N.C
N.C
S5
S6
S7
S8
S9
KS6
KI1
KI2
KI3
KI4
KI5
TEST
VDD
VDD2
VDD1
VSS
OSC
DO
DE
CL
DI
SW
N.C
TP3
TP2
TP1
TP4
TP5
TP8
TP7
TP11
TP9
TP10
TP12
TP14
TP13
R1 56K
S41
47
R10
1K
R11
IC2
CAUTION : For continued
safety, replace safety critical
c o m p o n e n t s o n l y w i t h
manufacturer's recommended
parts (refer to parts list).
Indicates safety critical com-
ponents. 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 volt-
meter. Values may vary
slightly due to variations be-
tween individual instruments
or/and units.
X16-2472-7x (1/2)