![background image](http://html.mh-extra.com/html/icom/ic-92ad/ic-92ad_service-manual_612379054.webp)
*; Refer to “PARTS LIST.”
10 - 3
A AM:2.83V
A Other :0.0V
A CTCSS ON : 3.14V
A CTCSS OFF : 0.0V
B CTCSS OFF : 0.2V
B CTCSS ON : 3.11V
A:0.4V
B:3.11V
Tx:0.02V
Rx:3.09V
FM:0.01V
DV:3.09V
Tx:3.08V
Rx:0.0V
A:3.11V
B:0.4V
A WFM:0.10V
0.001
C719
0.001
C707
1.5K
R218
220P
C614
0.1
C558
0.01
C551
150K
R220
22K
R507
1
C143
U NR9115J
Q105
0.1
C257
220P
C771
0.01
C134
82K
R152
0.0068
C506
0.1
C559
1k
R501
0.039
C252
0.001
C701
47P
C752
M62364FP
IC600
1
VIN1
2
VOUT 1
3
VOUT 2
4
VIN2
5
VDD
6
LD
7
CLK
8
DI
9
VIN3
10
VOUT 3
11
VOUT 4
12
VIN4
13
VIN5
14
VOUT 5
15
VOUT 6
16
VIN6
17
DO
18
VDAREF
19
RESET
20
GND
21
VIN7
22
VOUT 7
23
VOUT 8
24
VIN8
MMZ1005Y102CT
EP760
47K
R221
82K
R252
47P
C775
0.001
C259
22 MSVA
C230
0.1
C514
MMZ1005Y102CT
EP752
22P
C765
330K
R255
22P
C755
47K
R124
NJM2904V
IC502
1
2
3
4
5
6
7
8
0.0033
C250
47P
C790
220K
R555
4.7K
R566
22P
C772
NJM2904V
IC501
1
2
3
4
5
6
7
8
100K
R151
4.7K
R131
0.001
C708
0.039
C152
1.5K
R120
0.1
C509
330P
C151
12K
R552
0.001
C501
0.001
C714
22K
R558
0.1
C500
CD4094BPWR
IC702
1
STR
2
D
3
CLK
4
Q1
5
Q2
6
Q3
7
Q4
8
GND
9
QS
10
Q’S
11
Q8
12
Q7
13
Q6
14
Q5
15
OE
16
V+
10K
R713
U NR9115J
Q150
22P
C754
100K
R506
82K
R153
100K
R708
100K
R500
0.001
C717
0.0039
C507
0.001
C218
0.001
C700
100K
R556
0.0015
C153
R562
1M
47P
C751
47P
C757
4.7K
R703
XP6501
Q202
1
2
3
4
5
6
U NR9211J
Q500
0.001
C133
150K
R123
1k
R700
0.001
C712
22K
R702
22 MSVA
C130
MMZ1005Y102CT
EP755
22P
C766
10K
R567
0.01
C232
100K
R251
22P
C724
68K
R157
1M
R259
LM2904PWR
IC250
1
2
3
4
5
6
7
8
0.001
C602
330P
C251
0.1
C550
47P
C723
10K
R710
22K
R557
0.001
C711
0.1
C508
15K
R233
MA8030
D700
0.1
C131
47P
C781
100K
R709
CD4066BPWR
IC703
1
I/O1
2
O /I1
3
O /I2
4
I/O2
5
CONT 2
6
CONT 3
7
VSS
8
I/O 3
9
O/I 3
10
O/I 4
11
I/O 4
12
CONT4
13
CONT1
14
VDD
0.001
C702
CD4066BPWR
IC700
1
I/O1
2
O /I1
3
O /I2
4
I/O2
5
CONT 2
6
CONT 3
7
VSS
8
I/O3
9
O/I3
10
O/I4
11
I/O4
12
CONT4
13
CONT1
14
VDD
1k
R121
22K
R122
UNR9115 J
Q204
0.0068
C512
XP6501
Q104
1
2
3
4
5
6
0.01
C555
10K
R600
U NR9211J
Q501
MMZ1005Y102CT
EP756
470K
R564
12K
R502
22P
C764
1k
R217
1
C155
47P
C779
1
C233
0.001
C713
22P
C753
22P
C727
0.001
C706
IMSA-9637S-40Y905
J702
MAIN UNIT
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
37
38
39
40
41
42
10K
R711
0.001
C159
15K
R553
0.1
C154
0.001
C263
CD4066BPW R
IC500
1
I/O
1
2
O
/I1
3
O
/I2
4
I/O
2
5
CONT2
6
CONT3
7
VSS
8
I/O
3
9
O
/I3
10
O
/I4
11
I
/O4
12
CONT4
13
CONT1
14
VDD
0.001
C703
TP70D974E20
S703
1
COM
2
A
3
B
4
COM
5
A
6
B
100P
C142
150K
R156
0.001
C160
10K
R603
1M
R159
0.056
C560
12K
R707
10K
R250
0.001
C260
MMZ1005Y102CT
EP759
22K
R133
4.7K
R127
270K
R125
0.001
C132
1k
R551
0.001
C118
0.001
C129
22K
R509
0.001
C715
0.001
C718
0.1
C256
15K
R130
82K
R253
0.001
C503
0.0015
C513
0.1
C157
22K
R508
270K
R224
U NR9115J
Q250
47P
C777
47K
R158
2.2K
R565
270
R563
XP6501
Q203
1
2
3
4
5
6
1
C135
82K
R254
0.001
C709
MMZ1005Y102CT
EP757
22P
C789
0.001
C716
1
C255
2SC4738
Q502
47 MSVA
C600
22P
C726
2SA1832
Q700
0.01
C505
0.0047
C552
0.001
C219
MA2S111
D205
0.1
C254
150K
R256
12K
R706
1M
R604
MA2S728
D104
0.001
C562
22K
R234
SKHLLFA010
S701
47K
R714
220K
R126
0.001
C235
0.1
C156
0.001
C502
680K
R554
22P
C756
10K
R132
SKHLLFA010
S700
0.1
C563
100P
C258
1
C262
0.1
C504
0.1
C561
100P
C158
MA2S111
D105
0.001
C119
100
R129
U NR9115J
Q603
10K
R306
0.001
C710
100
R207
MMZ1005Y102CT
EP758
0.1
C554
330K
R155
82K
R154
680K
R504
10 MSVA
C603
22P
C725
47P
C758
MMZ1005Y102CT
EP750
0.0056
C553
0.0015
C253
0.001
C229
0.001
C760
MA2S728
D204
1
C261
0.1
C234
220K
R505
UNR9213J
Q 701
68K
R257
47P
C773
22K
R219
150K
R560
220K
R223
47K
R715
100K
R550
47P
C226
1M
R602
0.01
C128
10K
R150
1M
R601
0.1
C564
0.001
C601
0.0033
C150
15K
R503
0.0015
C557
22K
R559
0.47
C227
LM2904PW R
IC150
1
2
3
4
5
6
7
8
0.001
C793
0.01
C228
0.001
C705
XP1115
Q604
1
2
34
5
CD4094BPWR
IC701
1
STR
2
D
3
CLK
4
Q1
5
Q2
6
Q3
7
Q4
8
GND
9
QS
10
Q’S
11
Q8
12
Q7
13
Q6
14
Q5
15
OE
16
V+
0.001
C231
0.001
C704
MMZ1005Y102CT
EP751
0.47
C127
XP6501
Q103
1
2
3
4
5
6
47K
R258
4.7K
R225
0.01
C510
0.0068
C556
4.7K
R305
1
C144
LM2904PWR
IC704
1
2
3
4
5
6
7
8
DATA
DASTB2
CK
VMOD
RMOD
AAGC
BCT
ATONE
BTONE
AR3
S-TXV
AR3C
ARMUTE
MOD
AAM
DAFOUT
BCT
R3C
AR3C
ARMUTE
DATA
CK
DAF S
W/N
BCT
ACT
BR3C
VAVCOC
UAVCOC
AAM
BAM
AR3
BR3
AR3C
BR3C
VOLOUT
R3
R3C
+3V+3V
BRMUTE
ACT
DAFS
WFM
BRMUTE
UBVCOC
VBVCOC
CK
+5V
VOLOUT
VCC
DATA
MOD
+5.5V
SQL
DASTB2
HV
CK
APLLSTB
TXC
IOSTB1
BPLSTB
DASTB1
BPS
UNLK
IOSTB2
TTEMP
IOSTB3
AAM
BR3
TXC
HV-
I
HV
IOSTB3
IOSTB3
+3V
DIUD
BNOIS
DICK
BRSSI
+3V
INTPTT
S-TXV
DAFOUT
CHG
ANOIS
DIUD2
DICK2
ATONE
BTONE
+3V
+3V
AR3
AR3
AR3
DVC
DAF S
DVC
BAM
SQ
L
INTPTT
DIUD
DIUD2
DICK2
DICK
COMMON
CONTROL
RX(Analog voice)
TX(Digital voice)
RX(Digital voice)
TX(Analog voice)