108
TK-90
SCHEMATIC DIAGRAM /
7
6
5
4
3
2
1
A
B
C
D
E
X54-356 1/2
C23
0.1u
C25
10u16
C13
0.1u
C11
2200p
R24
1k
R23
0
J1
E58-0522-05
1
5
2
6
3
7
4
8
C20
1u
R21
1k
2
VSS
3
VIN
1
VOUT
D6
DA221
R25
4.7k
R32
47k
R35
47k
R31
33k
CN23
D19
D16
D11
D10
D14
R64
470
R61
470
R58
470
R53
470
D8
D17
D13
L4
1u
D1
EDZ18B
C16
100p
C17
100p
C18
100p
C19
1000p
L1
1u
12A02CH
Q5
R27
10k
R28
10k
C9
1000p
R34
47k
CN1
E41-2077-05
1
2
L2
1u
L5
1u
R29
820
R17
390
R19
390
R15
390
R55
150
R60
150
R62
150
R65
150
Q11
DTC114EE
Q12
DTC114EE
Q13
DTC114EE
Q14
DTC114EE
1
G1
2
A1
3
Y2
4
GND
5
6
7
8
C24
0.01u
R33
100
D5
A
VRM1608080MAA
D4
C15
1000p
D3
R22
100
C4
1000p
D2
EDZ18B
R12
100
R13
100
CN2
E41-2559-05
1
2
3
4
5
6
7
8
9
10
11
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
2
5
1
6
3
4
C21
100p
C22
100p
Q2
DTC114EE
C26
1u
R20
47k
C7
1000p
R1
0
R2
0
R3
0
R4
0
R5
0
R6
0
R7
100
R9
0
R10
0
R11
0
L3
10u
C47
4700p
R8
0
1
VSS
2
VDD
4
oUT
3
CD
1
COM8_1
2
COM9_1
3
COM1_1
4
COM2_1
5
COM3_1
6
COM4_1
7
COM5_1
8
COM6_1
9
COM7_1
10
COM8_2
11
COM9_2
12
SEG16
13
SEG17
14
SEG18
15
SEG19
16
SEG20
17
SEG21
18
SEG22
19
SEG23
20
SEG24
21
SEG25
22
SEG31
23
SEG32
24
SEG33
25
SEG34
26
SEG35
27
SEG41
28
SEG42
29
SGE43
30
SEG44
31
SEG45
32
SEG51
33
SEG52
34
SEG53
35
SEG54
36
SEG55
37
SEG61
38
SEG62
39
SEG63
40
SEG64
41
SEG65
42
SEG71
43
SEG72
44
SEG73
45
SGE74
46
SEG75
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
KEY4
KEY1
VRDN
CHDN
KEY2
KEY5
VRUP
CHUP
KEY6
KEY3
COM[3]
COM[2]
COM[6]
COM[4]
COM[7]
COM[5]
COM[1]
COM[9]
COM[8]
COM[2]
COM[4]
COM[5]
COM[6]
COM[7]
COM[3]
COM[9]
COM[8]
S[68]
S[67]
S[69]
S[66]
S[70]
S[59]
S[60]
S[56]
S[57]
S[58]
S[49]
S[50]
S[48]
S[47]
S[46]
S[38]
S[39]
S[37]
S[36]
S[40]
S[30]
S[29]
S[28]
S[26]
S[27]
S[12]
S[10]
S[11]
S[15]
S[13]
S[14]
S[1]
S[2]
S[9]
S[6]
S[4]
S[8]
S[7]
S[3]
S[5]
S[18]
S[17]
S[19]
S[25]
S[16]
S[23]
S[20]
S[22]
S[24]
S[21]
S[33]
S[34]
S[31]
S[32]
S[35]
S[43]
S[41]
S[44]
S[45]
S[42]
S[51]
S[55]
S[52]
S[53]
S[54]
S[62]
S[61]
S[63]
S[65]
S[64]
S[72]
S[71]
S[74]
S[73]
S[75]
RXD1
GND
MIC
PTT/TXD1
DM
SB
BLC
ME
VR-DW
CH-DW
D>
<C
20mA
20mA
20mA
20mA
7mA
KEY
SP
DISPLAY UNIT(X54-3560-20)
SW
SW
SW
SW
SW
SW
AVR
RESET IC
1.8V
ZENER
DIODE
1.8V
ZENER
DIODE
LIMITER
RST
E37-1231-X5
SPG
SP
POWER
B
VR-UP
CH-UP
A
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
COM2_2
COM3_2
COM4_2
COM5_2
COM6_2
COM7_2
SEG70
SEG69
SEG68
SEG67
SEG66
SEG60
SEG59
SEG58
SEG57
SEG56
SEG50
SEG49
SEG48
SEG47
SEG46
SEG40
SEG39
SEG38
SEG37
SEG36
SEG30
SEG29
SEG28
SEG27
SEG26
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
S7
S70-0896-05
S9
S70-0896-05
S1
S70-0896-05
S4
S70-0896-05
S8
S70-0896-05
S10
S70-0896-05
S2
S70-0896-05
S5
S70-0896-05
S11
S70-0896-05
S3
S70-0896-05
S6
S70-0896-05
PTT/TXD
DM
RXD0
RX
TX
BLC2
BLC1
DIMM
DGND1
5C
SW_8C
IC5
S-80942CNNBG9C
IC1
XC6201P502PR
A2
Y1
G2
VCC
IC2
TC7WT125FUF
AND GATE
Q6
Q7
DTC144EE
DTC144EE
SW
SW
LIMITER
D3,4,6
ME
MIC
E
PSENSE
TXD0
RXD0
PS
8D
SB
SP
SPG
E37-1227-X5
(X57-7210-20)-CN236
TX-RX UNIT
ED1
B38-0914-05
Q4
DTC114EE
SW
D8-19
LCD BACKLIGHT
B30-2281-05
B30-2281-05
D12
B30-2281-05
D15
D18
D9
B30-2281-05
A
VRM1608080MAA
A
VRM1608080MAA
0.11V
5.02V
3.95V
7.93V
5.02V
7.20V
7.91V
7.93V
6.91V
5.02V
5.02V
4.55V
0.01V
5.00V
13.56V
7.93V
5.01V
4.85V
5.02V
1.81V
3.95V
4.24V
3.94V
4.24V
0.10V
0.10V
0.10V
0.10V
5.00V