Icom IC-M2A Service Manual page 31

5V
DET
MOD
RSSIV
VOLIN 5V
BEPST
NOISV
BEPO
BEEP TEMPV
VOLO
AFV
C191
0.01
FCON
DS360
A0153A
1
SEG1
2
SEG2
3
SEG3
4
SEG4
5
SEG5
6
SEG6
PLST
7
SEG7
SCK
8
SEG8
SDATA
9
SEG9
10
SEG10
11 UNLK
SEG11
12
SEG12
13
SEG13
14
SEG14
15
SEG15
16
SEG16
17
SEG17
18
SEG18
19
SEG19
20
SEG20
21
SEG21
22
SEG22
PCON
23
SEG23
MODC
24
COM1
25
COM2
3 26
COM3
ATIS8
ATIS7
ATIS6
ATIS5
ATIS4
ATIS3
ATIS2
ATIS1
DET
MOD
R374
RSSIV
68 k
VOLIN
BEPST
NOISV
R373
100 k
R372
100 k
R193
470
72
71
k
373 C374 C375
.1
0.1 0.1
R192
390
R194
C192 C193
100 k
872 MHz 10 0.01
Vp-p
BEPO
BEEP
VOLO
AFV
CPU5V
5V
R6
R1 R8 R9
R7
3.6 V 1 k
473 k
1 k 10
47 k
R10
2.2 k
CP1
C6
C1 R2 C10 C11
0.1 100 k 0.047 2.2 0.001
R22
560
X1
R3 R4 C3
CR-726
10 k 47 k 220 P
C4 R5 C5
C2
D1
330 12 P
10 P C24
0.01 HVU17
0.1 0.001
5V
L20
1 20
VCC1 GND1 82 nH
2 19
IN1 IN2
3 18
ENB VCC2
4 17 R20
CLK XB
5 16 100
DATA XI
6 15
T1 XO
7 14
LOK GND2
8 13
CP1 CP2
9 12
FI1 FI2
10 11
FO1 FO2
C7 C8 C9 C12
C22
C20 C21
IC1
0.01 2 P 2 P 0.001
0.001 9 P 9 P
UPD3140GS
2nd Lo
PCON
MODC
R5V
RX 3.5 V
FI170
CFWM450E R173
1.5 k
1 2 C170
C171
0.001
82 P
3 4 5 IC170
TA31136FN
1 16
R171
OSCIN MIXIN
2 15
1.2 k
OSCOUT GND
3 14
MIXOUT N-REC
C181 4 13
VCC N-DET
5
12
0.1
IFIN RSSI
6
11
DEC IFOUT
7
10
FILOUT QUAD
C179 8 9
R176 FILIN AFOUT
120 P X170
6.8 k
CDBCB450KCAY24
R172
470
DET
R174
220 k
C178 C177 C176 C175 C174
0.1 0.001 0.001
0.22 0.001
C180
R175
47 k 120 P R170
390
DET
MOD
RSSIV
VOLIN
BEPST
NOISV
SQLO
R5V
5V
C160 R155
0.0056
1.5 k
C194
IC190
0.01
M62363FP-650C
1 24
VIN1 VIN8
FCON 2 23
VOUT1 VOUT8
PCON 3 22 C159
VPUT2 VOUT7 R156
4 21
VIN2 VIN7 0.01 470 100 k
5 20
VDD GND
DAST 6 19
LD RESET
SCK 7 18
CLK VDAREF
SDATA 8 17
DI DO
9 16 SQLI
VIN3 VIN6
MCON 10 15 SQLO
VOUT3 VOUT6 RX 1.2 V
BEPO 11 14 BEPST
VOUT4 VOUT5
BEEP 12 13 BEEP
VIN4 VIN5
Q151
2SC2714 Y
BEEP
VOLO
AFV
CPU5V
VCO CIRCUIT
MP20 V5V
1
2 R31
3 680
C29 C31 R29
R30 C36
0.001
0.001 390 68 k 0.001
C32
L22
80 nH 1.5 P
C37
0.3 P
Q20
R26
8.2 k
DTC144EUA
Q21
C26
C25
2SC4226 R25
47 P
Q23
C33
D21
R23
220 P R28
2SC4215 O
MA77
1 k 180
D20 R27
MA2S077 8.2 k
MOD
Q22
R25 C34
R24
1.5 P
100 k 100 k 2SC4226 R25
C35
C27 C28 C30
0.001
39 P 0.001 0.001
D22 D23
HVU350B HVU350B
R36
1 k
R120
C44 C150
R150
2.2 k
0.001
0.001 100
R5V RX 3.9 V
L121 L120 C121
56 nH 82 nH 0.001
C153 C152 R151 C151 R121 C123 C122 C120
0.001 0.022 3.3 k 56 P 10 k 10 P 15 P 0.01
C140 L133 C138 C137
C142 C134
C154
Q150 12 P 12 P 80 nH 13 P 2 P
0.001
3SK272
D130
MA77
RX 0.7 V
C143 R134 R133 C141 C139 L132 R130
68 10 k 5 P 80 nH 10 k
0.001 33 P
R154 C158 C157
0.001 0.022 R152
1.5 k
R131
1 k
FI151
FI150
C156 R153
FL-346 FL-346
0.001 1.5 k
C135 R132 C136
0.001 10 k 0.001
C155
6 P
T5V
V5V
R53 R54 R58
100 33
1 k
R32
390
C52 R55
C50
0.001 0.001 3.3 k
C38 R33
0.001 39 k
Q51
2SC4081 R
C40
18 P R59
R52
15 k
4.7 k
C39 C54
12 P 15 P
Q24 L49 C51
R34
22 P
2SC4215 O 47 nH
470
Q50
C48 C49
D50
18 P 18 P 2SC4226 R25
MA77
C41 R35
0.001 68 k C43
R50 C53 R57 C55
22 P R56
0.001 82 24 P
1 k 1.2 k
C42
5 P
D51
MA77 R65
Q25
100 k
PCON
2SC4215 O
R66
C56 C57
330 k
0.01 0.1
RX 3.2 V
R5V
R94
C105
0.001 33 k
R93
L130 C131
C108
1 k C104 C102
82 nH 12 P
47 P
47 P 12 P
R96 Q90
220 [M2A]
2SC4226 R25
RX
1st Lo
100 [M21]
0.8 V
C103
D93
5 P
R95
MA728
C132 C107 C106
C110 C109 C130
100 [M2A]
33 P 0.001 470 P 5 P 0.01 470 P
47 [M21]
C133
1 P 13 P
TX 4.9 V Power Save OFF 5.0 V
Power Save OFF 4.9 V
5V
RX 4.9 V
R5V
L131
82 nH
Q220 Q221 Q222
2SA1588 GR 2SA1588 GR
2SA1588 GR
C224
22
R220 R222 R224
10 k 10 k 10 k
R226 C225
BPFS 2.2 k 0.22
R221 R223 R225
4.7 k 4.7 k 4.7 k
Q223
C220
C221
C222
C223
22 DTC144EUA
0.01
0.01 0.01
BPFS
5V
VOLIN VOLIN
VOLO
VOLO
AFV AFV
CPU5V
VCC VCC
T5V
R60
R61 R62
1 k 0.15 100 k
3216
3216
R63
C61 C62
R72 L53 C63 C67 C68
10 k 33
0.001 47 15 nH 470 P 470 P 47 P
L55
31 nH
Q52
XP6401
Q54
C65
2SK2974
470 P
T5V
L51
82 nH
MP50
Q53
R64
2SK2973
10 k C58
0.1
5W_TX 2.4 V R71 R75
R67
1W_TX 0.5 V 100 100
100 k
R69
IC50
15 k
5 R68
1 NJM2125F
100
4
3
R70 C64 C66
C59 C60 R73 R74
2
15 k
0.001 0.001 0.001 1 k 10 k 0.001
C99 C97 C96 L91 C94 C92
12 P 82 nH 12 P
2 P 1 P 47 P
D92 C93 R115
MA77 4 P
39 [M21] only
L94 C100 R90 L92 C95 D91 C91
D90 C115
10 k 33 P 1SV307 22 P
80 nH 12 P 82 nH 0.001
1SV307
[M21] only
R91 C98
1 k
0.001
C101 L93
33 P 80 nH
CH16_RX 4.7 V
CH88_RX 0.0 V
BPFS
T5V
VOLIN
VOLO
5V
AF Mute OFF
Q230 7.5 V
Q225
2SB1132 Q
2SB1132 Q
VCC
R227
5.0 V
10 k R233
1 5
CTRL VIN
2.2 k
2
GND
3 4 Q231
Q224 NB VOUT
R230
XP6501 AB
27 k
XP6501 AB
IC220
NJM2870F05
C226
R228
0.01
22 k
CPU5V
C227 C228 C229 R231
C230 C231
22 0.001 0.001 10 1 M 1
R232 C232 R234
1 k 0.1 3.3 k
CPU5V
R
1
C73
0.001
L56 L57 C72
12 nH 36 nH 0.001
C70 C71
27 P
91 P
L90
44 nH
C90
33 P
VCC
C2
0.0
T5V
VOLIN
VOLO
5V
VCC
R
AFV
R235
330 k
C233 R
0.01 1
AFV