Icom IC-F3020 Service Manual Addendum page 31

April 2013
SECTION 11. VOLTAGE DIAGRAM
MAIN UNIT
S5V
+5V
+5V
R105
C297
330K 68P
R103
REF
330K
IC7
R104
REF 270K 13 *X2
14 1 4
R106
VCON VCC Q21
BAL 12
R89
2 3
10K GND OUT
NJM12902V
10K
2SK880
LVIN
CLOCK:15.3MHz
AMP :1.0Vp-p
R94
ACZ1005Y
EP6 220
S5V
IC2
16 1
B OSCIN
15 2
P OSCOUT
14 3
FOUT VP
13 4
NC VCC L36 L34 C201
12 5
FC DO
PLST R345 11 6
22N 22N 8P
LE GND
SSO R346 1k 10 7
0.001
DATA LD
SCK R347 1k 9 8
CLOCK FIN
ULCK 1k
C198
M B15A02PFV1
D4
R348
1k
DA2S10100L
S5V
R5V
0
2.75
C163
Q22
2SC5006 4P
C161
10P
MONI EMER *3 MULTI
S1
0
EVQ-PUL
0.5
KR0
KR1
KR2
KR3
S21 S22 S25 S26
R291
P0 KS4
P1 P2 P3
1k
KEY KEY KEY KEY
S3
S23 S24 S7
UP
SW-167
1 2 3
R353
KEY KEY KEY KS0
KS1
S9
S4 S10 S11 KS2 CLOCK:12.288MHz
KS3
4 56 AMP :2.5Vp-p
DOWN 1k
SW-167
KEY KEY KEY
S14
S13 S15
7 8 9
KEY KEY KEY
S18 S19
S17
* 0 #
KEY KEY KEY
DUSE
100K
MD2 R321
S-24C64CI-T8T1U3
AFON
PTTO
VSS SDA
4 5 NOIS
A2 SCL
3 6 DAST
A1 WP
2 7
A0 VCC
1 8
IC10
R349
CSO
76
CSI 1k
CCK 77
CLO 1k 78
CL I R351 79
CIRQ 80
COM4 ESDA 81
COM3 82
83
84
ESCL
PODN 85
T5C 86
R5C 87
DIGI 88
S1 1 36 COM2 NWC 89
P1/S1 COM2
S2 2 35 COM1 LSO 90
P2/S2 COM1
3 34 91
S3 S34 LSCK
P3/S3 S34
4 33 92
S4 S33 LCS
P4/S4 S33
S5 5 32 S32 LINH 93
P5/S5 S32
S6 6 31 S31 94
P6/S6 S31
S7 7 30 S30 RMUTE 95
P7/S7 S30
S8 8 29 S29 MMUTE 96
P8/S8 S29
S9 9 28 S28 SCK 97
S9 S28
S10 10 27 S27 SSO 98
S10 S27
11 26 99
S11 S26 KR0
S11 S26
S12 12 25 S25 100
S12 S25
DS3
R272
100
Q45
LCD S11188
DRA9144E
4.1
2SC4116
R98 Q20
L37
33N
2.97
R111
2.85
120K
R95 1k C192
220P
R380
C150
4P 10K 1
C205
R97 R99
15K 15K
C206
0.001
0
4.8
C166
IF IC
IC9
3P
FI2 1 16
OSCIN MIXIN
LTM450FW 2 15
0.1 C393 OSCOUT GND
3 14
O I MIXOUT N-REC
4 13
C394 0.1
C390 VCC N-DET
5 12
IFIN RSSI
6 11
0.1 DEC I FOUT
7 10
*R56 FILOUT QUAD
8 9
R44 FILI N AFOUT
*D2 AA32416A
120K
*FI3
0.6
*C392 *C391
IO R45 1.0
C69
*D3
270P 56K
*Q9
R201 R202
10K 470
IC23
C441
1 8
AO1 VCC 22K
2 7 +5V
0.001
AO2 SCL
3 6
C442 AO3 SDA R221
4 5
AO4 GND R222
CENC0
0.001
M62334FP
180K
R223
CENC1
56K
R224
CENC2
22K
R288
REM
TEMP
4.7K
CR-774
X6
R261 C348
DUSE
12K 22P
R259
0.1
1M IC8
1 5
C350 OUT CD
2
VDD C352
3 4
0.1 VSS NC
CSFT 0.027
R187
BD5242G
C351
68K
R190
1.2K
100K
CDEC
R354
0.1
C410
R200
SDEC
RSSI
1.5K
50
LVIN
49 BATV
48 I SENS
47
46
45 BEEP
44 SENC
43 CP06S
42
SDEC2
41 CP72 PLSW
40 DSDA
*IC22 39 ATX
38 EMER
37 MONI
36 TMUT
35 R350
ULCK
34 1k
OPT3
33 OPT1
32 OPT2
31 1k R352 PLST
30
29
28
27
NJM12902V
26
IC6
4
V+
GND
11
10Key/Simple
18
ACZ1005Y
R79
R85
27P L38
C191 82N
3.9k 1.8K
C126 3.7
33P
Q17
RX VCO 2SC5006
L42 2.35
2.27
4.7U
R84 R83
Q18
3.9k 1.8K
Q15
DMC561040
2SC5006
L25 68P R82
5 1
C123
0.1U 4.7
2
Q19
Q16
TX VCO DRC9144E
R88
2SC5006
4 3
R86
560
100K
2.33
C145
2.46
47P
R124
270K
0.7
S5V
R5V
JTBM450CX24
R27
150K
0
1.74
X1
C61
100P
0.001
FL-335
C62 C439
Q7 FI1
68P
R33 4 1
2.7K C58 GND IN
2 3
OUT GND
Q6 3SK324
R60 0.001 0
2SC5107
IF AMP
Q47
DRC9144E
*Q8
LQW18AN68NG00D
*C78
D_IF
0
NARROW:0.00
0.24
WIDE :5.00
SQLC
+5V
C430
470
R309 0.1
10K
R247
CTCSS/DTCS
NJM12902V
IC7
9
8 IC12
R209 R210 R211
10 1 24
VIN1 VIN8
MCGO 2 23
68K 47K VOUT1 VOUT8
47K
3 22 BEEPO
VOUT2 VOUT7
4 21 BEEP
R214 VIN2 VIN7
5 20
VDD GND
6 19
DAST
Q40 47K LD RESET
7 18
DRC9144E SCK
C315 CLK VDAREF
SSO 8 17
DI DO
MODI 9 16
0.1
VIN3 VIN6
MOD 10 15
VOUT3 VOUT6
11 14
VOUT4 VOUT5
12 13
VIN4 VIN5
M62364FP
REF
R186
BAL
100K
Q39
C223
0.1
120K R153 82K
C170
3 4
R183 R182 R181
4.7 R151
2 5
22K 22K 22K C174
180P
1 6
R152
DMG504010 6
R188
7
180K
5
10K
NJM12902V
IC7
C212
820P
IC6
6
7
R197 R196 *C211
5
NJM12902V 82K 39K
*R198
IC7
DTMF Enc 4
C317 0.01
V+
0.0022 GND
11
68K NJM12902V
NJM12902V
R217
R219 R218 R216 R215
NJM12902V
3 12
47K 68K 68K 68K
1 14
2 13
IC6
IC6
R280
FLASH WRITE
100K
R279
100K
X Y
Cad 921 x6
1.38
1.25
C102 C100 D16
6P Q29 10P 1SV307
2.16 2SC5006 C99
2.68
0.001
0.001
C101
C103
Q14
TX:1.2dBm
MT3S37T
9P
RX:0dBm
C182
0.001
R172
22K
C186
6.8
L12 12P C183
0.1
68N C49 10P
R390
0
4.5
C40
39P L_C2012C-68NG
L48 L47
C29 C22
6P
1.5P
Q5 3SK293
R302
100K
R13 100K
LQW18AN82NG00D
RF AMP
0
0
1.48
2.7
CP5 R126
0.0047
C257 C251 C253
100
*IC25 CF20
0.0047 0.0047
1 8
COM VCC
2 7
*IC24
INH CH0
3 6 5 1
VEE CH1 OUTPUT VCC
4 5 4
R371
GND A GND
3 2
I NPUT DET
*R373 8.2K *C427
IC3
R141
14 1
VDD I /O1
13 2
CONT1 O/I1 0
12 3
R140
CONT4 O/I2
11 4 R150 560K
I/O4 I /O2
10 5
O/I4 CONT2 270K
9 6 R139 560K
O/I3 CONT3
8 7
I/O3 VSS
14
R138 R137 C260
CD4066BPWR
9
R148 R147 R145 0.1
C272 470 82K IC5
8
NJM13403V
10
470 150K 150K 0.1 IC5
NJM13403V 2SK3019
NJM13403V Q34
R146
IC5
6
R144 C262
7
33K
5
0.1 VREF
270K
R376 R149 R143
IC7
2
0 220K 150K
1
3
NJM12902V
2.15
C372
1
Vcc
AFON
Q42
2SB1132
D_IF
J5
DMC506010R
Q41
40 1
39 2
38 3
37 4
36 5
35 6
34 7
33 8
32 9
31 10
30 11
29 12
28 13 SIGO
27 14 R273 1M
26 15
R274 1M
25 16
R275 1M
24 17
23 18 R276 1M
22 19 R277 1M
21 20 R278 1M
VCC
T5V
AXK540147YG CPU5
+5V
S5V
R5V
2SA1577
R264 Q25
Q24 2SA1577
10K
Q49
5.0
DRC9144E
0
0
5.0
5.0
5.0
CP14 CP06S
CP15 CP06S
CP16 CP06S
CP18 CP06S
5.0
0
CP19
CP06S
CP06S
CP17
CP12
CP06S
H VC375B
L_C2012C-68NG
C25 6P CP11
CP06S
Q46
DRC9144E
R303
10K
R142
3.9K
IC5 Q32
2
R133
1 RMUT E
3
100 *Q38
*Q33
NJM13403V DIGI
*Q36
DAFO
0.022 *R125
DIGI
C256
*Q37
EM6027P
CP4
C255
C254
13
MC1
0.047 0.047
12
CF20
PTT SW
MMUTE
*Q35 MCGO
0.1
DIGI
C250
MCOT
M CIN
+5V
R154
HSJ1102-018540
R367
IC5 PTTI J3
82K
4
100
V+ D CP3
DRA9114E R237
GND PTTO Q43
11
1.5K
CF20
NJM13403V
*C371 R241 R244
R240 R243 820K 47K
C367
56K 15K R242
C368
BEEPO
470P
0.1 390K
0.1
C370 R245
BEPO BEPO
IC6
9
18K
8
VREF 10
R246 100K
NJM12902V
F081165S-5
7.2
VR I
1k
R234
IC15
C324 R315
A
C326 1 10
NC POUT
2
10 9
VCC PWGND 100
3 8
NC PREGND
4 7
VIN PHASE
5 6
RIPPLE NF
TA7368PL-R10 J4
1
2
BM02B-ASRS-TF
AFOUT
D28 SP
R239
R379
DRC9144T0
CLONE
15K Q44
100
LRB706F
J2
HSJ1456-010320
2SB1132
Q26
2SA1577
Q23
Q27
DMC506010R 7.2
5.0
R169
5.0
100
Q28
DRC9144E
PODN
*; Refer to "PARTS LIST."