Main Unit - Icom IC-M45 Service Manual

10-2 MAIN UNIT

DET
TONE
SQL
D5 1SS321
R24
100 k
C49
C41 C44
SQL.C 0.047 10
R25 470
DET
R138 C52
10 k 0.1
SQLI
C51 C50
0.001 0.001
C55 R27
0.1 33 k
SQLV
C53
220 P R26
120 k
R139
C54
10 k
R28 220 P
2.7 k
R5
T5
HV
C56
R29 R30
0.1
27 k
100 k
J5
Q4
B11B-ZR-SM3-TF C57
0.001
2SK210 GR
C61
1 P
DSC
1
DET D18
2
MA363B L12 LB258
5V
3
DATAM
4
ICF3
from 5 L10
optional unit RMUT 3.3 H
6 C203
BUSY 7 P
7
PTT.S
8
OP.RST D6
9 D7
MA363B MA363B
DATAS
10
GND
11
Q5
2SK210 GR
D19
C205
MA363B 4 P
L11
R34
3.9 H
1 k
L13
LB-257
D8
C65
0.047 MA363B
C195 C166 5V
0.1 0.001
J4
52559-3092
C125 C126
0.001 0.001
SP+
1
SP+
2
SP— R79 47
3
SP— 6
4
GND 8
5
6 10
6
7 12
7
8
8
9 13 R147 47
9
10 11 R146 47
10
11 9 R82 47
11
12 7 R81 47
12
13
R80
13
47
14 14
to 14
15 16
LOGIC unit J1 15
16 18
16
17 20
17
18
18
19 21 R151 47
19
20 19 R150 47
20
21 17 R149 47
21
15 R148 47
22
SQLV
23 R83 47
BUSY
24
GND
25
GND
26
27
HVS
28
29
5V
30
C192 C193
0.1 0.1
NOTE
e : [EUR]
u : [USA]
Rx: 2.2V
CP3
R20
C40 R19
470
0.001 100 k
C38 C37
X2 CDBCA450CX24
C42 100 P 0.001 0.22
C39 R17 FI1b FL-202
0.01
560
R23
C43 1.2 k
Q3
0.01
2SC2714 Y
IC1
TONE
TA31136FN C171 0.1 u only
Q25
1
FIL
2SB1132 R
2
FIL
3
IN
4
VCC
4 5 6
R153
Rx: 5.1V
R21 4.7 k
1.5 k u only
C167 C168 C169 C170
R22
10
0.1 2.2 1
390
2 1 u only u only u only u only
FI2
C47 CFWS450E
3 2 1
0.01
Q24 XP6501 AB u only
5 4 3
C46
C45 R152 4.7 k u only
1 0.1 R135 10 k
R5
T5
HV
C202
0.1 R31 5V
47
C198
0.1
u only
R46
C182 C183 R48
680
0.1 0.1 680
C58
0.001 R32
C59
47
10
L17
C79 R49
C204 0.1 H
C62 C78 R47 0.001 68 k
0.5 P
4 P 0.001 68 k L16
0.1 H
C64
L14 0.5 P
2.7 H
C63 C80
R33
5 P Q8
3 P 82 Q7
2SC4215 O
2SC4215 O
Q6
R36
1 k
2SK880 Y
C70
10
C72 C184 C197
0.001 0.1 0.01
C69
C67
0.001
2 P
R37
1 k
C71
L15 0.75 P
R39
2.7 H 10 k
C68 R35 1 k
4 P
R38
18 k
R40
C190 C74
0.1 0.001 47 k
C73
0.047
5V
R142 100
T5
R5 R131
8.2 k
HV
C141
C142
SP+ 0.1 10
SP—
C143
10
IC6b
M5218AFP 600C
R127
5
BEEP R129 NTCCS20123NH
103KCT
12 k 7
ICF3
6
TXDET R126
39 k
P.STB
OEX.STB
OEX.OE
R128
HANG 12 k
R130 C140
Tx: 2.6V
47 k
PTT 0.0027
TONE
SQL
UNLK
DATA
DATAM
HV
CK
R5
PTT.S
T5
SQL.C
5V
HVS
DATAS
BUSY
Rx: 5.0V Tx: 5.0V
C144
0.1
4
1 Q1
5
STR.
2 Q2
6
D
3 Q3
7
CLK
15 Q4
14
OE
Q5
13
Q6
12
Q7
11
Q8
9
QS
10
QS
R84 R85 R86
R87
47 k
8 47 k 47 k 47 k
IC7
BU4094BCF
10 - 2
R18
1.5 k
R5
R12 R7
L8 10 100
0.47 H
R13 C30
C25
FI1a FL-202 R157 680
68 P R9 0.001
R8
560
22 k 820 k
C26
C32 C31 C201 5 P
C35
0.001 0.022 0.1
0.001
R16
Q2
C36
10 P 3SK131 L
Rx: 1.5V
R11 R10
Rx: 0.5V
100 k
10 k
8
R137
OUT R14 L7
C34
7 43 k u only 47 C33
LS-491
GND 0.022 0.001
6
CR
5
CR
Rx: 2.5V
C29 L9 L26
R5
(CH16)
0.001 82 nH 47 nH 1 M
C196
IC10 0.1
R136
C24
2.2 M
BA1604F 0.001
C172
u only CP1
0.022
u only
u only
R15
C28 C206
2.2 k
7 P 8 P R6
100 k
R59
10
C86
C188 0.001
C89
0.1
C185 0.001
0.1 R50 R55 R56 L19 R60
2.2 k 82 nH 1 k
390 4.7 k
R53
C200
100
0.1 C90 18 P
D9
MA862 Q10
C83 R61
2SC3775 3
0.001 R51 R54 100
39 k
100
L18 C84 18 P
C87
0.1 H
10 P
C85
D10
R52 0.001 R57 R58 C88
C81
1SS196
1 k 4.7 k 100 0.001
20 P
C82
12 P
Q9
R155
2SC4215 O
68
C115
R43 R41 Rx: 3.5V
R78 R156 0.001
10 k 560 100
100 C114
0.001
20
C76
19
0.1
15.2MHz
R42 C124 C120
CP2 C122 18
8.2 k 3 P 2 P 4 P
17
C77
16
0.1
X1 CR-528 15
L23
Tx: 2.7V 14
L24
1.8 H R45
(CH16) 1.8 H
330 13
12
C119 C116 11
C75 C123 C121 C118 C117 15 P
0.001
2.2 7 P 8 P 33 P 10 P
T5M
R132 R133
15 k 39 k
R118
82 k
R123 Tx: 2.6V
C136
150 k
0.1
IC6a IC5
BU4066BCF
M5218AFP 600C
8
R119
R125 R124 R122 3 1 14
47 k I/O VDD
82 k 82 k 82 k 1
2 13
O/I CONT.A
2 3 12
O/I CONT.D
R120 4 11
I/O I/O
C138 330 k 4
5 10
0.0033
CONT.B O/I
6 9
CONT.C O/I
7 8
C137 VEE I/O
C139
68 P 0.001
R93
1 k
Q22
2SC2712 Y
R94 R96
560 k 2.7 k
R98 R99
33 k
33 k
C153 C179
5.0V
0.027 0.027
C154
R92 0.0022
C151
8.2 k
1 Q21
R145 2SC2712 Y
18 k
RCV
C152
C155
R97
SEND 0.22 R95
820 P
180 k 330
MIC.C
DSC.C
TMUT
RMUT
OP.RST
HI/LO
Q20 Q18
IC8
2SB1132 R 2SB1132 R
TA7805F
C149
R90 0.001
O
10 k R88 10 k I
C150 C189
0.001 0.1
G
R91
C186
2.2 k C187
R89
0.1
0.1
2.2 k
RCV
C181
C148 C147
Q19 Q17 100 0.01 0.1
RN1404
RN1404
SEND
R5
R1
47
C22
C14 C199
0.001
L6 LS-491 0.1
0.001
C20
C10
Q1
0.3 P 10 P
2SK882 Y
D2
L5 LS-491
HVU350
D4 D3
Rx: 0.3V
HVU350 HVU350
C23 C11
1 P 36 P
L25
LA-238
C21 C19 C18 R2 C15 C13 C12
6 P 6 P 5 P 100 0.001 1 P 6 P
R4 R3
1 M 1 M
C17 C16 Q23
0.001 0.001
2SD1664 Q
R140
470
R5
T5
HV
GND GND
IC2
C92 R64
15
0.001 L20 C174
SC-1302
82 nH
0.001
C94 12 P
C207
1 2 3 4
R66
C97 0.001
2.2 k
C95
0.001
Q11
2SC2954
C100
Tx(Hi): 7.8V 24 P
C98
Tx(Lo): 5.0V 470
C93
C96
0.001 6.8
C91 Q13
C93
0.001
R62 FMW1
R63 0.001
1 k Q14
15
1
RN1404
Q12
C108
470 P
2SB1143 S
2
IC3
C107 C106
R77 C109
0.001
UPD3140GS 47 k 1 0.001
1
GND1 VCC1 Q15 R74
2
C112 2.2 k
IN2 IN1 C111
RN1404
3 0.001 0.022
VCC2 ENB
4
XB CLK
5
XI DATA
R76
6 R44
10 k
XO T1 330
7
GND2 LOK
8
CP2 CP1
9
FI2 FI1 C113 R75
C110
10
0.01 3.3 k 0.1
FO2 FO1
Tx(Hi): 4.9V
Tx(Lo): 0V
Rx: 4.9V
5V
T5M
R101
10 k
R113 R111
R117
270 k 2.7 k
1 M
R144
6.8 k
Tx: 2.5V
R102
C191
10 k
100
IC4
C134
5 R112
0.0056
TA75S558F 1 k
1
4
3
R116
18 k
C135
R103
2
0.047
47 k
R104
R114
47 k 1 k
R115
47 k u only
120 k e only
C132
0.001
C133
0.001 e only
R105 C158
0.001 C159 C160
0.1
0.22 2.2
C163
470
C156
10 R107
R106
15 k 330 k 5
C161
2.2 C164
1
470
4
2
R108
IC9
100 k C162
0.047
LA4425A
3
D16
C157
1SS226
1
R100
2.2 k
R143
33
HVS
C146 C145
C180
0.1 0.01 10
C194
0.1
L4 C8 L3 L2 L1
LA-253
LA-243 0.001 LA-149 LA-243
ANT
D1
XB15A308
C4
5 P
C2
C6
C9
9 P
27 P
C178
100 P
C7 C5 C3 C1
8 P 15 P 24 P 15 P
R141
68
C175
0.001
D13
XB15A308
R65
L21
68 LW-25
C176 C99
470 P 0.001
L22
LA-243
R67
2.2 k
D11
HSM88ASR
C101
0.001
C102 C103
18 P 0.001
5
D12
HSM88ASR
4
3
R72
10 k
R68
100 k
R71 470
R73
220
R69
C104 C105
1.5 k
0.001 0.1
Q16
RN1402
R70
10 k
HI/LO
C177
0.01
SP—
ICF3
SP+
AF2
J3
HSJ1493-01-010
C127
C128
0.001 0.001
R134
100 J2
B07B-EH-S
D14 AF1
1
1SS196
PTT
e only 2
HANG
3
GND
from Microphone
4
MIC
5
GND
6
AF2
7
C131
0.001
C130
0.001
C129
D15
0.001
RD6.2M B2
e only
R109
4.7
C165
0.1
J1
B8B-2R-SM3-TF
SQLG
1
SQLI
2
SQLV
3
HV
4
HVS
5
GND
6
VOL1
7
VOL2
8
HV
from DC cable
GND
R154
10
D17
DSA3A1