Icom IC-E2820 - Voltage Diagrams; Control Unit Voltage Distribution

*; Refer to “PARTS LIST.”
10 - 1
SECTION 10 VOLTAGE DIAGRAM
0.01
C25
SKQDPA
S11
47K
R204
1
C72
1SS372
D24
0.01
C74
0.1
C119
0.001
C44
10K
R177
47P
C7
SKQDPA
S13
0.001
C42
0.01
C50
0.1
C114
MA8068
D1 2
47K
R170
R21
2.2K
2SC4738
Q17
2SC4738
Q19
47K
R168
SKQDPA
S10
R25
10K
0.001
C105
100
R176
2SC4738
Q31
1
C121
2.2 MSVAC95
47K
R175
0
R187
2SC4738
Q27
2SC4738
Q20
0.01
C108
0.01
C67
SW-169
Right
Left
S16
COM
A
B
MA8130
D20
2SC4738
Q26
10K
R141
2SC473 8
Q16
TA78L05FIC3
IO
G
27K
R180
10
C56
100kR211
10K R122
47P
C10
R2 2
470K
2.2 MSVAC111
680
R138
10K
R157
0.22 SV AC61
680
R159
10
C8
MMZ1608Y102BT
EP 9
47K R199
1SS400
D11
1k
R218
680
R136
680
R150
100k
R209
0.1
C1
470K
R77
100P
C5
GO
FAMG1211F
DS35
4.7K
R171
0.033
C26
R41
1M
33P
C109
1
C65
R13
10K
SML-512M W
DS38
SML-512MW
DS23
10K R126
R8
10K
LM2904PWR
IC10
1 2 3 4
5 6 7 8
10K R125
10K
R78
680
R163
1k
R195
1k
R190
TC7S04F
IC12
1
2
3
4
5
S-80945CNMC
IC9
1
OUT
2
VDD
3
VSS
4
NC
5
CD
2SC4738
Q29
0.1
C120
0.22 SV AC60
10K
R140
10K
R160
0.01
C87
0.01
C86
10K
R153
2SC4738
Q21
SML-512MW
DS26
SML-512MW
DS24
680
R151
680
R158
10K
R149
1
C122
47K
R202
R2
10K
680
R155
47K
R216
0.001
C45
10K
R156
680
R147
0 4-6240-034-001-800
J8
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
35
36
SML-512M W
DS21
SKQDPA
S6
10KR131
Q1
2SC473 8
SKQDPA
S14
2.2 MSVAC102
04-6240-034-001-800
J7
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
35
36
680
R162
SKQDPA
S8
0.22 SV AC63
100
C24
0.22 SV AC64
Q3
2SB798
47K
R196
SML-512M W
DS22
47K
R203
0.01
C68
R6
10K
MMZ1608Y102BT
EP10
CR-839
X1
0.1
C115
1.2K
R189
10KR130
D4 MA8039
2SA1586
Q15
1SS372
D23
12K
R173
0.1
C2
10K
R161
0.01
C47
2.2 MSVAC59
SML-512MW
DS28
2SC473 8
Q23
B5B-ZR-SM4-TF
J3
1
2
3
4
5
67
0.1 C107
GO
FAMG1211F
DS36
390
R137
47K
R212
SML-512MW
DS27
0.1
C117
SML-512M W
DS29
10KR132
B5B-ZR-SM4-TF
J4
1
2
3
4
5
67
0.01
C69
R14 100K
1.2K
R188
SKQDPA
S12
2SC4738
Q28
0.001
C27
0.
1
C4
18K
R169
10K
R172
1k
R191
0.22 SV AC62
4.7
C16
22
C54
10KR128
2.2 MSVAC101
1SS400
D9
0
R213
10K
R123
R1111N321B
IC6
1
VDD
2
GND
3
CE
4
NC
5
VOUT
1
C7 1
100k
R208
47K
R206
47K R201
680
R142
R2 4
10K
10
C_10_25V_EEE-S_C
C28
680
R154
10K
R152
47K
R219
HJC0187-010024
J5
1
2
3
4
47K
R200
10K
R83
10k
R72
MMZ1608Y102BT
EP12
680
R139
2SC4738
Q18
10K
R145
680
R146
1SS372
D22
47P
C31
33P
C110
GO
FAMG1211F
DS33
SW-169
S15
COM
A
B
0.001
C70
0.1 C48
SKQDPA
S5
1k
R192
47K
R205
10K
R134
1SS400
D8
100k
R210
47K
R198
M 30620FCPGP
IC13
1
P94/DA1/TB4I N
2
P93/DA0/TB3I N
3
P92/TB2IN/SOUT 3
4
P91/TB1IN/SIN 3
5
P90/TB0IN/CLK3
6
BYTE
7
CNVSS
8
P 87/XCIN
9
P86/XCOUT
10
RESET
11
XOUT
12
VSS
13
XIN
14
VCC
15
P85/NMI
16
P84/INT2
17
P83/INT1
18
P82/INT0
19
P81/TA4IN/U
20
P80/TA4OUT/U
21
P77/TA3I N
22
P76/TA3OUT
23
P75/TA2IN/ W
24
P74/TA2OUT/W
25
P73/CTS2/RTS2
26
P72/clk2/TA1OUT
27
P71/RXD2/SCL
28
P70/TXD2/SD A
29
P67/TXD1
30
P66/RXD 1
31
P65/CLK1
32
P64/CTS1/RTS1
33
P63/TXD0
34
P62/RXD 0
35
P61/CLK0
36
P60/CTS0/RTS0
37
P57/RDY/CLKOUT
38
P56/AL E
39
P55/HOL D
40
P54/HLDA
41
P53/BCLK
42
P52/RD
43
P51/WRH/BHE
44
P50/WRL/WR
45
P47/CS3
46
P46/CS2
47
P45/CS1
48
P44/CS0
49
P43/A19
50
P42/A18
51
P41/A17
52
P40/A16
53
P37/A15
54
P36/A14
55
P35/A13
56
P34/A12
57
P33/A11
58
P32/A10
59
P31/A 9
60
VCC
61
P30/A8(/-/D7)
62
VSS
63
P27/A7(/D7/D6)
64
P26/A6(/D6/D5)
65
P25/A5(/D/D4)
66
P24/A4(/D4/D3)
67
P23/A3(/D3/D2)
68
P22/A2(/D2/D1)
69
P21/A1(/D1/D0)
70
P20/A0(/D0/-)
71
P17/D15/INT5
72
P16/D14/INT4
73
P15/D13/INT3
74
P14/D12
75
P13/D11
76
P12/D10
77
P11/D 9
78
P10/D 8
79
P07/D 7
80
P06/D 6
81
P05/D 5
82
P04/D 4
83
P03/D 3
84
P02/D 2
85
P01/D 1
86
P00/D 0
87
P107/AN7/KI3
88
P106/AN6/KI2
89
P105/AN5/KI1
90
P104/AN4/KI0
91
P103/AN 3
92
P102/AN 2
93
P101/AN 1
94
AVSS
95
P100/AN 0
96
VREF
97
AVCC
98
P97/ADTRG/SIN4
99
P96/ANEX1/SOUT4
100
P95/ANEX0/CLK4
47K
R179
TC7W04FU
IC14
1
2
3
4
5
6
7
8
SML-512MW
DS25
0.01
C46
10K
R133
100K
R178
2SC4738
Q22
10K
R148
10K
R174
SKQDPA
S7
GO
FAMG1211F
DS31
10U
L1
GO
FAMG1211F
DS32
0.1
C118
10KR129
SML-512MW
DS39
10K R127
1SS400
D10
47P
C30
0.1
C106
0.1
C3
0.1
C116
100K
R7 6
1k
R220
0.01 C51
0.01
C34
0.001
C43
2SC473 8
Q24
2SC4738
Q25
MMZ1608Y102BT
EP11
R4
10K
GO
FAMG1211F
DS34
0.001
C29
0.01
C104
2.2 MSVAC57
2SC4738
Q14
22
C55
1
C66
1SS372
D21
680
R135
680
R143
10K
R144
0.1
C113
GO
FAMG1211F
DS37
47K R207
LDIAL_A
LDIAL_B
RDIAL_A
RDIAL_B
R_DIAL_SW
L_DIAL_SW
SET
R_V/MHz
R_M/CALL
L_M/CALL
L_V/MHz
5V
RESET
CPU_TXD
G REEN_D1
RED_D1
RESET
PWR
PWR
LVOL
LVOL
PWR_SW
LDIAL_B
RDIAL_A
LDIAL_A
RDIAL_B
RSQL
RSQL
RSQL
RVOL
RVOL
RVOL
LSQL
LSQL
PWR_SW
A0
RD(E) WR(R/W) A_CS1 B_CS1
A0
B_CS1
/DO F
/RES
CL
FR
A_CS1
W R(R/W)
RD(E)
R_V/MHz
R_M/CALL
SET
F_CE
D7(SI)
D6(SCL)
D5
D4
D3
D2
D1
D0
CPU_RXD
CPU_TXD
/RES
/RES
D5
D6(SCL)
D4
D7(SI)
D0
D1
D2
D3
CPU_RXD
RED_D1
GREEN_D1
L_M/CALL
L_V/MHz
DUP
TONE
LOW
R_DIAL_SW
L_DIAL_SW
LCD_3V
LCD_3V
LCD_3V
+3.2V
+3.2V
HV
+9.3V
HV
TDAT A
GND
HV
DUP
TONE
LOW
+3.2V
LCD_3V
5V HV
RDAT A
B_CAP2-
B_CAP2+
B_V3 (1.98)
B_CAP1+
B_CAP3+
B_CAP1-
B_V0 (8.78V)
B_CAP4+
B_V2 (6.84V)
B_V1 (7.82V)
B_V4 (1.01V)
7.7mA 7.5mA 7.5mA 7.5mA 7.5mA
SET S10 PWR S14
3.2V
P/S
C86
P/S
C86
B_CAP5+
B_VOUT(8.34V)
A_CAP3+
A_VOUT(11.1V)
A_CAP2+
A_CAP1+
A_CAP2-
A_CAP4+
A_CAP1-
A_CAP5+
NC
NC
MASTER
SLAVE
VDD(3.18V)
VDD(3.18V)
A_V0 (8.78V)
A_V2 (6.84V)
A_V1 (7.82V)
A_V3 (1.98)
A_V4 (1.01V)
R1
1
2
3
4
5
1
2
3
4
5
W1
VR2 UNIT
R1
1
2
3
4
5
1
2
3
4
5
W1
VR1 UNIT
10-1 CONTROL UNIT