Icom IC-V8 Service Manual

R204
3.3k
C52
15p
R205
1.5k
R308
47k
R128
10
C105
0.01
C129
1.5
R155
100
W7
C81
100p
R54
180k
D1
MA77
R2
2.2k
C214 0.033
C131
0.01
PB0/AN0
1
AVSS
2
TEST
3
X2
4
X1
5
VSS
6
OSC1
7
OSC2
8
RES
9
NMI
10
P20/IRQ4/ADTRG
11
P21/SCK1
12
P22/SI1
13
P23/SO1
14
P24/SCK3
15
P25/RXD
16
P26/TXD
17
P27/IRQ0
18
P17/IRQ3/TMIF
19
P16/IRQ2
20
P15/IRQ1
21
P14
22
P13/TMIG
23
P12/TMOFH
24
P11/TMOFL
25
P10/TMOW
26
VSS
27
V3
28
V2
29
V1
30
VCC
31
PA3/COM4
32
PA2/COM3
33
PA1/COM2
34
PA0/COM1
35
P50/WKP0/SEG1
36
P51/WKP1/SEG2
37
P52/WKP2/SEG3
38
P53/WKP3/SEG4
39
P54/WKP4/SEG5
40
P55/WKP5/SEG6
41
P56/WKP6/SEG7
42
P57/WKP7/SEG8
43 44
P60/SEG9
45
P61/SEG10
46
P62/SEG11
47
P63/SEG12
48
P64/SEG13
49
P65/SEG14
50
P66/SEG15
51
P67/SEG16
52
P70/SEG17
53
P71/SEG18
54
P72/SEG19
55
P73/SEG20
56
P74/SEG21
57
P75/SEG22
58
P76/SEG23
59
P77/SEG24
60
P80/SEG25
61
P81/SEG26
62
P82/SEG27
63
P83/SEG28
64
P84/SEG29
65
P85/SEG30
66
P86/SEG31
67
P87/SEG32
68
P90/SEG33
69
P91/SEG34
70
P92/SEG35
71
P93/SEG36
72
P94/SEG37
73
P95/SEG38
74
P96/SEG39
75
P97/SEG40
76
VCC
77
PD0/SEG41
78
PD1/SEG42
79
PD2/SEG43
80
PD3/SEG44
81
PD4/SEG45
82
PD5/SEG46
83
PD6/SEG47
84
PD7/SEG48
85
PE0/SEG49/M
86
PE1/SEG50/DO
87
PE2/SEG51/CL2
88
PE3/SEG52/CL1
89
AVC C
90
TONEM
91
TONED
92
VTREF
93
AVR EF
94
PB7/AN7
95
PB6/AN6
96
PB5/AN5
97
PB4/AN4
98
PB3/AN3
99
PB2/AN2
100
PB1/AN1
6
D2
MA77
C179
0.01
R52
100k
L32
17.5nH
C368
0.5p
R127
33
R358
33k
R341
33k
R12
3.3k
C152
0.047
R65
100k
C26
0.001
R122
2.7k
C284
33p
L19
56nH
123
456
C1
12p
C96
100p
C4 6p
C145
10
C73
0.1
R305
100
R170
10k
C356 0.001
SP1
L16
60nH
R115 120k
R307
390
C23
0.001
C281
0.001
L6
27nH
J2
R340
22k
C97
5p
D3
MA77
2
3
1
C27
18p
R121
1k
C288
0.001
R174 15k
R69
100
R75
220
D11
HVU350B
1
2
C75
0.1
R210
3.9k
R13
33
C289
0.001
DS1
TTR5515 UPFDHW
COM4
1
COM3
2
COM2
3
COM1
4
SEG1
5
SEG2
6
SEG3
7
SEG4
8
SEG5
9
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
COM1
COM2
COM3
COM4
R222
18k
13
12
14
R123
6.8k
C243
0.001
R112
1M
C31
5p
C213 2.2
R114
18k
R117
1.5k
C212 0.01
R169
39k
C139
1
C95
0.001
R349 100k
[USA] only
R70
100k
R53 10k
R5
22
C100
39p
R67
100k
C128
0.1
C10
0.001
R19
330
L21
47nH
R113 68k
R64
100k
C251
0.001
R59
120
L7
68nH
C28
12p
R304
220
C358
0.001
C14
0.01
V+
4
GND
11
L1
60nH
C205
0.001
R58 100k
C15
150p
R99
120k
R161
22k
L5
21nH
R259
10k
D50
MA728
D12
HVU350B
R1
82k
C171
0.1
C99
0.001
L18
68nH
R14
4.7k
C102
56p
C98
5p
C76
18p
C252
0.001
L15
54nH
R97 220k
R159
100k
C91
2p
C22
100p
R16
15
C277
6p
R11
3.3k
C88
0.001
C164
0.001
R61
47
C21
4.7
C18
0.001
C278
22p
R98 330k
C3
27p
R57
100k
R68
4.7k
C5
22p
C13
0.001
D32
RB706F-40
EP5
R303
220
D4
MA77
C104
0.001
C94
0.5p
C19
0.01
L24
2.7 H
R100
18k
C298
4.7
C80
1p
R357
33k
C29
0.001
R23
680
R15
100
L8
0.1 H
W11
R18
39k
C287
22p
C93
0.001
DS3
LNJ310M6RA
C168
0.001
R160
150
C151
47p
C149
0.022
C2 2.5p
R251
330k
C357
0.001
D8
MA77
C399
0.0033
C90
0.001
R10
33
R163
2.2k
L36
2.2 H
L4
50nH
R107 150k
R309 8.2k
D27
RB706F-40
C204
0.001
C167
47p
L20
2.2 H
L2
50nH
L29
68nH
NC
1
VCC
2
NC
3
VIN
4
RIPPLE
5
NF
6
PHASE
7
PREGND
8
PWGND
9
POUT
10
R44
10k
C33
0.001
C79
5p
R126
47k
C150
10
C299
470p
D9
HVU350B
C390
27p
L26
EXCCL3225U
R22
68k
R162
22k
C285
18p
C92
100p
MP5
R66
100k
C135 270p
C169
0.001
C138
0.001
C101
56p
J3
C87
0.01
C24
0.001
C136
0.0056
R232
1k
R226
1k
R103
12k
X2 CR-663
9.200 MHz
C195
56p
C193
8p
R178
39k
C194
15p
R101
1M
R102
10
R120
47k
C232
0.1
R182
NTCCM20124AG473JCT
R252
10k
R181
100k
R242 1M
R241 1M
R243 1M
R346 100k
R235 2.2M
R196
82k
R195 56k
R194
56k
DS2
LNJ310M6RA
R193
56k
C20
0.001
C199
0.1
J6
1
2
R132
470
D34
MA8056M
R144
22k
C165
0.001
C166
0.001
C163
0.001
MC1
C297
0.001
C296
0.001
R17
1k
R145
470k
R245
100k
R246
100k
R236
1k
R237
1k
R350
1M
C245
0.01
R225
100k
R228
15k
A0
1
A1
2
A2
3
VSS
4
SDA
5
SCL
6
WP
7
VCC
8
C137
0.033
R3
2.2k
R7
220
D33
RB706F-40
C17
0.001
C8
0.001
C153
100
C25
0.001
1
2
3
4
5
6
C82
0.001
C144
0.001
R72
10k
R187
100k
C89
0.001
COM4 COM3 COM2 COM1
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13
LEDC
VCC
UNLK
PSVCO
DUSE
T5C
PLST
OPV1
PSSCO
PCON
RMUT
R5C
MMUTMMUT
AFON
OPT
MIC
OPV3 OPV2 ISO KR0 KR1 KR2 KR3 KS0 KS1 KS2 KS3 KS4
PTT
DIUD
DIUD
TEMP
LVIN
SD
CIRQ
CIRQ
S2
S2
CCS
NOIS
CCS
DICK
XIN
CSHIFT
SCK
SI
SO
SEG2
SEG1
CTCIN
PS5C
S1
S1
REMO
XOUT
OPT1
OPT1
OPT2
OPT2
OPT3
OPT3 SI
NOIS
NOIS
SCK
SO
CTCC
TONE
SICO
CTCSS
RESET
CLIN
CLOUT
CLOUT
TXC
T3
T2
T3
T1
AFON
PS5 PS5
T3
VCC
CONT
VOLOUT
CLOUT
CLIN
PLCK
PLCK
CPU5
W5
AFOUT
ANT
T5
VCC
VCC
T5
PS5
PS5
CTCC
CPU5
CTCIN
TONE
COM1
COM2
COM3
COM4
VCC
PSVCO
PLST
OPV1
ESDA
ESCK
TX: 4.30V
TX: 0V
TX: 0V
AF ON: 6.46V
DIUD
EXT. SPEAKER
EXT. MIC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
S3
Q4
2SC4406
IC8
HD6433876B49H
Q1
2SK3476
Q16
XP6501
Q13
3SK274
NJM12902V
IC3
NJM12902V
IC3
Q15 2SB1132
Q6
2SC4406
IC3
NJM12902V
Q12
3SK274
Q25
2SC4116
Q2
2SK3475
D
D6
Q3
2SC5085
IC5 TA7368F
Q31
DTC144TU
Q43
DTC144EU
IC7
BR24C16FV-E2
Q50
UMX5
Q37
DTA144EU
CHASSIS UNIT
SW5V
VCC
SD
CLIN
SW5V
2.46V
2.77V
0.96V
1.83V
0.73V
1.21V
2.37V
0.74V
TX: 3.62V
RX: 3.82V
RX: 0V
TX: 1.49V
RX: 0V
TX: 4.06V
RX: 0V
TX: 0.82V
RX: 0V
TX: 1.82V
RX: 0V
TX: 2.20V
RX: 0V
TX: 3.65V
RX: 0V
TX: 0V
RX: 4.55V
TX: 0V
RX: 0.74V
TX: 1.97V
RX: 1.61V
TX: 0V, RX: 1.64V
RX: 0.79V
RX: 4.55V
TX: 0V
RX: 1.60V
TX: 0V
RX: 1.76V
TX: 0.833V
TX: 1.97V
RX: 1.61V
AF OFF: 0V
1.90V
LEDC ON: 4.86V
LEDC OFF: 0V
LEDC ON: 3.18V

Icom IC-V8 Specifications

General

Frequency Range	136-174 MHz
Power Output	5.5 W
Mode	FM
Receiver Sensitivity	0.16 μV (12dB SINAD)
Channel Spacing	12.5/25 kHz
Voltage	7.2 V DC