Main Unit - Icom IC-M401EURO Service Manual

11-2 MAIN UNIT

5V
C34
0.01
R165
IC2 UPD3140GS
100 k
C39
1 GND1 20
0.001 VCC1
2 IN2 19
IN1
PSTB 3 VCC2 18
ENB
XB 17
PCK 4
CLK
PDATA 5 XI 16
DATA
6 XO 15
R28 330
T1
UNLK 7 GND2 14
LOK
CP2 13
8
CP1
FI2 12
9
FI1
10 FO2 11
FO1
R29
1 k R30
10
C40 CP1
R31
0.01
2.2 k R32
10 k
C41 C42
0.047
2.2
R5
VCC
T5
5V
VCO5
Q3
2SC4116 BL
R33 R34
1 k 1 k
C98
0.001
C43 R35
10
47 k
C257
0.01
C44
0.001
R36 R40 1.8 k
100
Q4
DTC144EU
R37 33 k
C189
C190
J6
0.001
0.001
R38
100 k
SP+ SP+
1
SP+
R39 C45
2 C46
22 k 0.01
3 470 P
SP SP
4
SP
5
BEEPM BEEPM
6
C47
BPLVL BPLVL
7
0.1
8
VCC 5V
9
VCC C191
10
22 P
11
5V
12
5V C192 C193
13
RCV 22 P 0.001 RCV
14
15 DET
SEND SEND
16
17
18
TMUT TMUT
19
20
TXDET TXDET
21
ATIS ATIS
22
HI/LO HI/LO
23
5V
24
SQLV SQLV
25
26 R140
R139
PTT PTT
27 10
8.2 k
28
BPFV BPFV
29
PTTM PTTM
30
4.92 V
31
RMUTM RMUTM
32 R142
33 6.2 k
0.80 V at -3dBu RX
34
SQL SQL
35
36 R194 1 k R196 1 k
UNLK
37
PDATA
38
PSTB
39
PCK
R143 R141
40 C170 C169
22 k 18 k
R195 10 0.01
R193
1 k
1 k
R137
15 k
R138
RV-110
CP2
R136
12 k
C246
0.0027
C296 C196 C261 C264 C262 C297
0.001
82 P 0.01 47 P 47 P 82
VCC
T5
R5
5V
C265 C194 C298
C195 C255
0.001 0.001 47 P 0.01 0.001
4.98 V
C171 C173
C172
100 0.1
0.01
C299
580mVp-p at 3kHz DEV
0.1
IC13
SQL
NJM2125F
C33
R210 10 k X1
5
0.1
1 CDBCA450CX24
L28 82 nH 4
R215
C20
3 12 k
R25 100 100 P
R214
2 R14
C258 2.7 k
R212
1.2 k
9 P
333 k
C259
RX: 3.55 V
9 P
C260
R211
C21
C22
0.001
68 k
10 0.01
R213
R15
12 k
470
R26 R21
C29
DET C25 C24
330 R27 390
0.001 0.001
0.001
1.5 k
X2 CR-659
C27 220 P
C26
0.001
C38
0.001 R18
C28
R16
22 k
RV-152 220 P
R19 C30 C31
R20
C36 C35 C266 820 330 k 0.1 0.1
C37
12 P 10 P 18 P 0.001
5V
R5
VCC
T5
2ndLO
5V
R49
R47 470
R44
100 680
C59
R41
L6
2.35 V 470 P
560 C61
0.1 H
R45 470 P
C54
L4 L5
390
1.5 P
2.7 H 80 nH
C57
470 P R48
R42
C50 C51 C52
C60 68 k
8.2 k
0.22
0.001 47 P
0.5 P
Q5 2.45 V
2SC4226 R25
C56
R50
0.001
C58 68 k
R46 470 P
Q7 C62
D2
180
5 P
D1 MA77 2SC4215 0
D3 D4
MA77
HVU350
HVU350
Q6
R43
2SC4226 R25
8.2 k
Q8
C53 0.89 V
39 P 2SC4215 0
C55
C272
1.5 P
C49
C48
10 W6
0.001 470 P
4.28 V
R102 1 k
5V
2.47 V
C141
R96 R87
C137
10 100 k
2.7 k 0.1
R98
470 k
DET
R101
15 k
IC12
Q21
TC4W66FU
D12
C139 C138 2SC4116 BL
1SS355
0.022
0.022
R100
15 k
RX: 4.97 V
0.87 V 0.27 V
TX: 0.00V
C140
0.1
R99 R97
2.70 V 150 k 390
5V
VBIAS
AF5
C156
C168 C235
10
R206
0.001 R183
0.1
150 k
R129
100 k
R134 5.6 k
39 k C165 IC10A
6 0.0047
NJM4558M
7 8 3
5 1 R172 C233
R135
2
103 k 15 k 0.001
IC10B R132
R133
R131 4
82 k 82 k
NJM4558M
150 k C234
R130 C162
56 P
C164
390 k 0.1
C166
820 P
56 P
R171
390 k
R204
1
VCC
T5
R5 RX: 4.94 V
5V TX: 0.00 V
IC8 TA7805F
R144 Q22 2SA1588 GR Q24 2SA1588 GR
18
O I
C177 C178 C179 R147
0.1 0.01 0.1 10 k
G
C176
10
R145
R146
10 k
2.2 k
C174 C175
0.1 0.01
Q23 Q25
DTC144EU DTC114EU
11 - 2
R158 100
C226
C5
C23 R12
470 P
1.5 k 0.001
0.22
R6
L1
10
C19
0.82 H RX: 4.85 V
0.22
R7
C6
R13 3.3 k
68 P
470
C7
RX: 1.28 V
0.001
C17 C16
R11
C4
C18 C3
100 k 0.001 0.022
0.001 0.022 Q1 3SK272
0.01
R9
C275 FI1
FI2
C14
1.5 k
0.001 FL-310 FL-310
IC1 6 P
C225
TA31136FN 12 P
R10
Q2 R188
1.5 k C254
100
2SC2714 Y 0.001
C11 L3 L2
R3 C224
R5
R22 1.5 k 0.001
82 nH 56 nH
10 k 5 P
10 k
2 1
R8 RX: 0.73 V
L27
C32 C9
2.2 k C10
5 4 3
4.7 H
0.001 10 P
15 P
C12
FI3 CFWS450F
0.01
R60
R56
R59
1 k
4.7 k
10
C65
0.001 C71 C294
C68
0.001 220 P C77
R51 0.01 R54
D5 C72 0.001
C295
100 2.2 k L9
L7
MA77 0.001
1 P 82nH
0.1 H
R192
100
C63
C70 L29
22 P
10 P 47 nH
D6 R61
C74
L8 MA77 12 P 100
0.1 H
Q10
2SC3775 3
3.28 V
D7
C67 1SS355
C267 C268
18 P
18 P 18 P
R53 C75
1 k
0.001
C64
470 P
R57 R58 C73
0.001
3.97 V 4.7 k 100
MP1 R62
R52
1 k
27 k 1
C66 2
3 Q14
12 P
4
DTC144EU
5
Q9 6
2SC4215 0 TMUTE
VBIAS
5V
VOL1
R82
R91
C136 C128 R81 3.67 V
R95 2.7 k
1M 0.1
2.2 10 k
1 M R93
MMIC
1 M
1 8
SQL OPEN: 4.95 V
SQL CLOSE: 0.00 V
2 7
3 6
R169
C135
4 5 100 k
0.01
TX: 0.05 V
RX: 4.21 V
Q18
DTC144EU
4.90 V
5V
VBIAS
AF5
C155
R126 Q29
0.01
100 k
R122
R113 2SC4116 BL
IC11B
100 k
100 k
NJM4558M
R175
IC11A
22 k
5 NJM4558M
R121 C159 2.91 V
7 8 3
2.2 k 0.01
6 1
2
4
C236
R201
0.1
10 k
R123 R174
C160
R177
C276 2.2 k
150 k 100 P
560
R203 R207 0.1
18 k 18 k
R176
C202
0.0047 33 k
2.29 V
VCC
VOL2
D14
RX: 0.00 V
DA204U
TX: 4.94 V R149 R151 C181
22 k C240
15 k 2.2
0.001
C183
0.1
C239
C182 R152 1 5
47 P
R150
C180 0.01 1M 4
1.2 k
0.01 2
IC9
3
LA4425A
R148 Q26
1 k
DTC144EU C184
0.001
RX: 3.07 V
R5
L26
C252
0.10 H
R155
0.001
33 k
C213
C215
C227 C228
47 P
12 P
0.001 470 P Q27
R187
2SC4226
1 k RX: 1.66 V
D20
RX: 0.89 V
MA77
W8
C223 C221
L25 C218
12 P 12 P
82 nH 1 P
C211 L20 C207
L21
R157
47 P 82 nH 12 P
82 nH
47
C220
2 P
C209
C217 C210
L22
12 P
15 P 5 P
82 nH
R190
10 k
C216 C214 C253 C212 D21 C208 L19
C222 L24
33 P 5 P 0.001 0.01 MA728 33 P 82 nH
33 P 82 nH
R163
1 k
C256
C249 R191
R76
0.001 10 k
0.001
150
VCC
T5
TX_H: 8.55 V R77
TX_L: 5.15 V
68
R63 R64
IC3 SC-1302
33 33
C100
GND GND
470 P
L10
C284 C283
82 nH
L30
L31 220 P 10 P
47 nH
47 nH
L12
C78
R78
22 P LA-243
2.2 k
C76
1 P
C104
C79 C270 C271 C103
C80 C81 C82 C88 C89 C83 C91 C102 0.001
0.001
18 P 39 P 18 P
220 P 22 P
47 0.001 10 P 0.001 1000 22 P
C286 C285
220 P 10 P
Q11
C85 C86 C87 C92
2SC3268
470 P 0.001 0.01
0.001 D8
Q12
HSM88ASR
2SB1202 S
R65 C84
47 k 1
Q15
FMW1
R71
Q16
RV-143
R70 DTC144EU
C90 R68
R66 10 k
R69
0.01 10 k
3.3
220
R73
8.2 k
VBIAS
5V
VOL1
C278 C279
47 P 0.1
RL1
C289 C290
D18
10 P 220 P
1SS355
C127 C126
C292 C291 C288
47 P 0.01 C287
220 P 10 P 220 P 10 P
SP+
PTT
SP—
PTT
C237
0.1 MIC
PTT
T1
C121
0.001
SP+
SP—
J5
GND
9
1
SQLV SQLV
C185 2
5V
470
3
HV
4
C186 GND
5
470 VOL2
6
VOL1
7
HVS
8
R154
C125 10
4.7
0.001
C281
47 P
C124
C188
C187 47 P
47 P
0.1
R216
47
D16
D19 C300
1SS375
0.001
MA77
C203 C201 L15
C206 C204 C199
12 P 12 P LA-243
2 P 1 P 47 P
L16
R185
82 nH
10 k
L17 C202 C197
C200 C198 D15
82 nH 33 P 5 P 27 P
22 P XB15A308
C251
0.001
BPFV
R186
CH16_RX: 4.91 V
1 k
CH88_RX: 0.00 V
L11
LW-25
CHASSIS
unit
C101
0.001
J1
C106 L13 L14 L32
0.001 W1
LA-243 LA-253 LA-243
1
R79
D10
2.2 k
XB15A308
2
C108 C110
R208
5 P 4 P
C105
82 k
22 P
C107 C109 C111 C280
18 P 27 P 15 P 4 P
D9
HSM88ASR
C94
C93
R74
TX_H: 3.13 V
0.01
0.001 C95
100 k
TX_L: 3.24 V
22 P
C96
C97
0.01
22 P
DSC+ J7
1
5
DSC-
2
VCC
3
GND
FI4 4 6
NFM60R20T/S2
13.8 V
CHASSIS UNIT
D11
DSA3A1
HV
FI5
GND
NFM60R20T/S2
W2
C116 C115
1
C1
47 P
0.001 2
3
4
SP+
SP
C118 C293
470 P 470 P
R80
100
From smart mic
PTT 5
1
MICG (HM-132)
2
MIC
3 J4
GND
4
MIC
6
C120
C277
470 P
0.001
W1
VR-B BOARD
GND
1
SQLV
2
5V
3
J5 GND
1
R1
SQLV
2
100 k
5V
3
GND
4 R1
GND
5 100 k
VOL2 HV
6 1
GND
VOL1
7 2
HVS VOL2
8 3
VOL1
4
HVS
5
VR-A BOARD