Icom IC-M401E Service Manual - page 34
11 - 2
L6
0.1
µH
J6
2
1
4
3
6
5
8
7
10 9
12 11
14 13
16 15
18 17
20 19
22 21
24 23
26 25
28 27
30 29
32 31
34 33
36 35
38
40
37
39
C340
47p
C339
47p
C341
47p
C338
0.001
C337
22p
C336
0.001
C331
0.01
C347
82p
C346
0.001
to LOGIC-E
board J4
OPC-1046
C349
0.001
R1
10k-B
W1
5V
SQLV
GND
R1 10k-A
W1
GND
VOL2
VOL1
HVS
GND
R56
27k
R81
1k
D7
MA77
C117
470p
D14
XB15A308
D21
XB15A308
C115
0.001
Q16
FMW1
1
2
3
4
5
CP11
Q17
DTC144EUA
C109
0.001
R95
1k
C108
470p
R114
470
R112
2.2k
C120
0.001
R111
10k
C119
0.001
to ANT
L31
LA-243
C113
0.1
L18
NL 252018T-047J
C102
18p
C116
470p
L17
NL 252018T-047J
R92
100
C94
3p
C103
39p
C125
0.001
Q13
2SA1577
CP14
L20
LW-25
C110
22
CP13
C107
47p
C146
0.1
C145
0.1
C140
220p
C100
10p
L21
LA-243
L22
LA-243
R125
100k
L19
LA-243
R113
10k
R124
82k
R141
15
CP12
Q15
DTC144EUA
C138
0.01
C137
0.001
C96
47p
C95
0.001
C97
470p
C81
0.001
R83
2.2k
C83
47p
C84
18p
D8
MA77
R55
100
C55
0.001
C51
0.5p
R42
8.2k
R24
560
C47
0.001
C29
470p
R45
390
C42
47p
R43
8.2k
C26
0.01
C28
0.001
R26
33k
R22
1k
C45
1.5p
C44
0.001
R25
100
D2
MA77
L4
80nH
D3
HVC350BTRF
D1
MA77
D4
HVC350BTRF
R46
180
C11
12p
R5
100k
C12
TZC3R100A110R00
C13
18p
IC1
µPD3140GS
1
VCC1
2
IN1
3
ENB
4
CLK
5
DATA
6
T1
7
LOK
8
CP1
9
FI1
10
FO1
11
FO2
12
FI2
13
CP2
14
GND2
15
XO
16
XI
17
XB
18
VCC2
19
IN2
20
GND1
C32
5p
R32
68k
R7
1k
R8
10
C36
0.001
R203
100k
R202
470
C202
0.022
C203
0.001
C101
22p
C104
18p
C82
0.001
R84
390
R82
39
C46
1.5p
C23
0.001
R41
560
R28
100k
C24
470p
Q2
DTC144EUA
C213
0.001
FI3
CFWLA450KFFA
I
O
X2
CDBCB450KCAY24
C210
0.001
C216
0.1
C217
22p
IC2 TA31136FN
1
OSCIN
2
OSCOUT
3
MIXOUT
4
VCC
5
IFIN
6
DEC
7
FILOUT
8
FILIN
9
AFOUT
10
QUAD
11
IFOUT
12
RSSI
13
N-DET
14
N-REC
15
GND
16
MIXIN
C209
0.01
R214
22k
R213
33k
R206
390
C220
0.001
C205
100p
C208
10
R207
1.5k
C219
0.001
R219
470
R27
22k
R11
330
R21
1k
R23
47k
C118
0.001
C112
470p
C204
0.01
R201
1.5k
IC9
LA4425A
1
2
3
4
5
Q41
DTC144EUA
D41
DA204U
C354
0.001
C355
47
C357
0.1
J5
1
2
3
4
5
6
7
8
1
2
3
1
2
3
1
2
3
4
5
1
2
3
4
5
9
10
R1
1k
R2
1k
R3
1k
R4
1k
R352
1.2k
R351
15k
C356
47
C359
47p
C352
2.2
C361
0.001
C362
47p
C368
47p
C367
0.001
D42
DSA3A1
C363
0.01
C364
47p
R384
10k
C383
0.1
R382
10k
Q52
DTC144EUA
Q54
DTC144EUA
C382
0.01
R385
2.2k
D13
HSM88ASR
C123
0.001
D12
HSM88ASR
C122
0.001
R103
1M
R107
3.3k
C93
0.001
R94
22
R93
22
R155
100k
C161
3p
R150
39k
C160
0.1
C152
10p
Q21
3SK131
R182
10
C175
0.5p
D27
1SV214
R172
100k
R147
100
R178
10k
L39
LS-440
R173
10k
R149
100k
L38
LS-440
C179
0.1
C150
10p
R177
22k
C159
0.001
C182
0.001
C158
0.01
D25
1SV214
C184
0.01
Q22
3SK131
L35
LS-440
C164
3p
C183
6p
C156
0.1
R171
100k
D26
1SV214
R181
100k
R152
150
R151
47k
R153
1
D28
1SV214
C163
0.001
L36
LS-440
C75
0.001
Q55
2SB1132
C153
0.001
R176
1.5M
R44
100
R294
10
C293
0.001
C292
0.01
R356
4.7
R324
10k
R327
47k
R326
15k
R328
8.2k
R307
5.6k
R303
2.2k
R302
10k
C306
56p
C312
820p
C301
0.1
R317
82k
R312
150k
R318
100k
R315
JPW
R316
82k
R308
390k
C302
0.01
C313
0.0047
C344
470p
C345
470p
CP1
R301
100k
R34
68
C87
47p
R88
100
C88
0.001
R87
10k
L14
47nH
R86
10k
C86
0.001
C85
18p
L15
NL 252018T-082J
C91
18p
R85
10
C22
0.01
R185
1.5k
C189
0.001
C21
10
C2
0.01
C3
0.1
C1
0.022
R6
330
R10
10k
R208
1.5k
C215
0.1
C218
0.1
C221
0.22
C49
470p
C48
470p
C52
470p
C57
470p
C31
470p
C56
12p
C33
22p
R31
470
R51
680
R52
68k
C358
47p
C384
0.1
C385
0.01
C386
100
C381
10
C387
0.1
C390
0.1
Q53
2SA1577
R146
100k
C162
10p
C74
0.01
R74
2.2k
C134
0.01
C135
22p
C139
22p
C392
10
C391
0.001
C388
0.001
C389
10
R386
3.9k
C351
0.01
R353
1M
C222
0.22
C223
0.1
C343
0.001
C342
0.001
C378
0.001
C377
47p
C5
2.2
C25
10
R104
470
C27
1
IC8
NJM4558M
1
2
3
4
5
6
7
8
IC7
NJM4558M
1
2
3
4
5
6
7
8
C315
0.01
C304
0.01
R313
150k
R305
100k
R311
4.7k
R309
100k
R291
8.2k
R292
22k
R293
18k
C291
10
L3
2.7
µH
R9
2.2k
C316
10
C126
0.001
C127
18p
C130
27p
C133
5p
C144
0.001
C141
27p
C121
18p
C124
18p
C7
0.001
MP1
1 2 3 4 5 6
C41
39p
C157
0.001
C174
2p
C177
3p
C178
10p
C173
10p
R204
1.5k
C195
0.001
C187
0.1
C188
0.001
C193
6p
R387
4.7k
J7
1
2
3
4
1
2
3
4
1
2
3
4
5
6
5
6
C403
0.001
R401
100
R381
18
C401
0.001
J4
1
2
3
4
1
2
3
4
5
6
C402
470p
R161
JPW
R162
JPW
R163
JPW
R167
JPW
R168
JPW
C34
27p
C35
27p
C58
33p
R36
56
C77
4p
R110
5.6k
R121
2k
R126
2k
R122
2k
R127
2k
R116
82
R123
820
R91
2.2k
R96
39
L42
0.82
µH
C185
2.5p
C186
56p
R183
1k
C176
0.75p
R154
390
C154
3.5p
D24
1SS375
R323
39k
R325
10k
C323
0.0027
C305
0.1
C303
270p
R304
68k
Q51
2SA1588
R383
560
R166
JPW
R165
JPW
R164
JPW
IC10
TA7805S
1
I
2
O
3
G
C106
0.001
C105
22
C98
47p
C99
470
R97
47
C369
47
C370
0.1
CP19
CP18
CP16
W2
OPC-1041A
CP17
R306
1k
C4
0.047
C43
0.22
FI2
FL-363
(21.7 MHz)
X1
CR-768
(21.250 MHz)
Q7
2SC4215
Q12
2SC3775
Q6
2SC4215
Q5
2SC4226
Q1
2SC4116
Q4
2SC4226
Q3
2SC4215
Q56
2SC4116
Q10
2SC4226
R354
15k
R355
3.3M
R314
560k
C311
0.1
R341
22k
C353
1
L7
56nH
L2
56nH
L16
68nH
Q23
2SC2714
L1
0.1
µH
L11
0.1
µH
L12
0.1
µH
C142
22p
FI1
21R15AB
(FL-368)
R115
15k
R205
1k
R212
820
R218
33k
R215
47k
R216
8.2k
R221
470k
C211
270p
C212
270p
C314
56p
W2
TXDET
VCO5
PSTB
UNLK
PCK
PDATA
BEEPM
BEEPM
BEEPM
BPLVL
SQLV
SQLV
GND
TMUT
RCV
SEND
SEND
DSC–
MOD
MOD
DEMOD
DEMOD
MIC
HI/LO
MICAF
MICAF
GND
VOL2
VOL2
R5
R5
R5
R5
R5
R5
R5
R8
R5
R5
VBIAS
VBIAS
AF5
AF5
AF5
AF5
R8
R8
R8
R8
R8
BPFV
VOL1
VOL1
VOL1
PTT
PTT
GND
SP+
SP+
SP+
GND
GND
VCC
GND
VCC
VCC
HV
VCC
VCC
DSC
DSC
DSC
VCC
VCC
VCC
HVS
HVS
VCC
VCC
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
R417
15k
R416
82k
R415
39k
C416
0.001
C415
0.0027
5V
SQLV
GND
VOL2
VOL1
GND
GND
HVS
5V
5V
T5
T5
T5
T5
R5
R8
VCC
T5
T5
T5
T5
T5
GATE BIAS
1
4
3
DRAIN BIAS
IC3
RA35H1516M
2
RF INPUT
RF OUTPUT
SP+
SP+
SP–
SP–
SP–
SP–
to
LOGIC-E
board J1
to
LOGIC-E
board J3
VCC
DSC+
DSC–
GND
VCC
DSC+
DATAM+
DATAM–
DATAS+
DATAS–
ICF3
GND
MICG
PTT
MIC
GND
MICG
PTT
1
2
3
GND
KEYM
HANG
to DC POWER
SP–
to EXT SP
OPC-1099
SQL
SQLV
PTT
BPFV
HI/LO
TXDET
TMUT
SEND
RCV
BPLVL
ATIS
PTTM
RMUTM
PCK
PDATA
SQL
SQLV
PTT
BPFV
HI/LO
TXDET
SEND
GND
GND
GND
TMUT
GND
RCV
VCC
UNLK
PSTB
PCK
PDATA
UNLK
PSTB
BPLVL
GND
ATIS
PTTM
RMUTM
5V
5V
1
2
3
4
5
6
7
8
SQL BOARD
VR BOARD
MAIN-E UNIT
SMART MIC
MC1
HM-132
CP15
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
Q31
2SC4116
IC4
TC4W66FU
C149
8p
C333
0.01
C334
22p
C335
0.001
C332
0.001
C348
82p
TX H: 1.9V
TX L: 1.99V
6.70V
3.66V
1.64V
TX H: 3.44V
TX L: 2.74V
CH16 RX: 3.86V
CH28 RX: 6.70V
7.53V
0.80V at –8dB
µ RX
470mVp-p at 1 kHz –3 kHz DEV
TX 4.98V
RX 0.00V
TX
0.00V
SQL OPEN
5.01V
SQL CLOSE 0.00V
1.16V
2.35V
0.89V
2.45V
3.28V
3.97V
3.67V
2.73V
4.95V
RX: 7.60V
TX: 0.00V
13.79V
RX: 5.01V
TX: 0.00V
RX: 0.00V
TX: 4.94V
5.02V
C232
0.1
C233
0.022
C234
0.022
C235
10
C236
0.1
R237
2.7k
R236
390
R234
470k
R232
15k
R233
1k
Q34
DTC144EUA
R246
100k
R241
1M
R261
100k
R252
1M
R262
10k
D31
1SS355
R231
15k
C241
0.01
R243
1M
Q61
2SC4116
R414
2.2k
R413
33k
R411
560
C413
0.1
C414
0.1
R412
22k
T1
12T01
R257
2.7k
C252
1
C237
2.2
C411
47p
C412
0.1
C231
0.22
1
2
3
4
5
6
7
8
R235
220k
PTTM
MMIC
RMUTM
PTT
VBIAS
MICAF
5V
1
2
3
4
6
7
8
9
10
to DS-100
DATAM+
DATAM–
DATAS+
ICF3
DATAS–
GND
VCC
DSC–
DSC+
GND
5
FI5
NFE31PT152Z1E9L
1
3
RL1
FTR-P3CP012W1
D43
1SS355
C371
10p
C375
10p
C373
10p
C372
220p
C376
220p
C374
220p
FI4
NFE31PT152Z1E9L
1
3
HVS
VCC
2
2
CP5
IC11
NJM2125F
1
2
3
4
5
R224
10k
R225
68k
R226
12k
R223
2.7k
R222
12k
R227
33k
CP3
SQL
SQL
11-2 MAIN-E UNIT