Icom iC-M501EURO Service Manual page 38

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MAIN(2)
VCC
8V
A5V
T8
R8
DEMOD
BUS LINE
C308
IC20
CP5
0.1
R263
NJM2125F
5
10k
R266
R268
1
SQLI
1k
1k
4
W6
W5
3
R264
2
R265
R267
C309
10k
C307
10k
10k
0.22
0.22
R8
C27
C26
0.001
0.01
L2
LS-440
C21
C22
2p
0.5p
C28
L4
L3
C17
C16
LS-440
LS-440
0.001
3p
22p
RF
C24
C18
C13
15p
C14
15p
3p
R16
15p
10k
R9
100
C12
470p
R12
R11
R10
220k
220k
220k
D4
D3
D2
1SV270
1SV270
1SV270
MAIN(1)
L29
C25
C19
C15
0.001
0.001
0.001
2.42V
LOCK
R88
L22
D16
VCC
150
LW-25
XB15A308
VCC
T8
T8
IC3
SC-1302
C132
0.001
L21
LA-243
1
2
3 4
R81
R82
VGG
2.2k
2.2k
C127
C128
24p
18p
C129
C130
0.001
0.001
D14
Q16
HSM88ASR
FMW1
PI
D15
Q14
2
1
HSM88ASR
2SB1143 R76
C124
47k
1
R77
5.6k
Q15
3
4
5
R84
Q17
DTC144EU
RV-143
DTC144EU
R79 10k
R83
10k
R80
R85
R86
150
22k
1M
HVS
HVS
HV
HV
D5V
D5V
MAIN BUS
OPT BUS
SMIC
SMIC
SAFO
SAFO
A5V
A5V
MOD
R175
R176
SP-
C237
C236
C235
8.2k
47
SP+
0.001
0.1
10
DSCMOD
2.68V
R165
150k
IC13B
R169
M5218AFP
R168
NTCCM16084BH
R167
R166
5
10k
82k
82k
7
R171
6
C282
C226
12k
0.1
R172
0.0033
RV-110
R170
C228
C279
C229
C227
12k
0.0027
0.001
47p
68p
C7
R7
0.001
100
C10
C9
R8
0.001
0.001
470
R5
R3
10k
33k
Q2
C5
L1
3SK292
2p
LS-440
C4
R4
15p
22k
C3
D1
R6
0.5p
C11
C8
47k
1SV270
0.001
470p
R2
220k
RCV
C2
8p
C6
HV
0.001
HVS
C320
VCC
D33
0.001
1SS375
8V
A5V
D5V
R282
39
R8
L26
D17
LA-243
XB15A308
Q20
2SB1132
C141
C142
L27
C143
33p
27p
LA-238
100p
R112
R114
10k
10k
C133
L23
L24
L25
C166
0.001
LA-149
LA-243
LA-253
0.001
ANT
R113
2.2k
C139
4p
R89
C137
82k
C134
C136
5p
C138
8p
12p
27p
Q21
Q23
DTC144EU
DTC114EU C168
R116 47
A5V
R117 1k
R8
R120
R122
Q18
560k
2.7k
2SC4116
R87
R118
C183
C184
100k
8.2k
0.027
0.027
C131
R119 8.2k
0.001
R121
C182
180k
0.22
C246 0.22
SMIC
SAFO
5V
2.68V
VBIAS
R156
1M
R162
R160
C230
C221
C220
82k
1M
0.01
0.1
0.1
1
VDD 14
I/O
2
CONT.A 13
O/I
3
CONT.D 12
O/I
4
I/O 11
I/O
5
O/I 10
CONT.B
IC13A
8
6
O/I 9
C223
CONT.C
M5218AFP
Q30
3
R158
7
I/O 8
0.1
VEE
R161
1
22k
2SC4116
12k
2
C219
R164
C319
82k
0.1
0.1
IC12
C222
4
BU4066BCF
C225
0.1
0.001
C224
22p
R157
R159
2.7k
33k
R163
1M
4.95V
D22
DA204U
R177
15k
C238
0.01
Q31
DTC144EU
R178
1.2k
A5V
R90
C158
47
0.1
IC4B
R95
R102
R103
R104
100k
M5218AFP
C147
10k
10k
10k
DEMOD
5
0.1
7
C148
6
C153
C156
0.1
R96
0.012
470p
100k
C154
C155
0.033
0.033
R105
C159
470k
0.22
C152
R101
C157
C149
C150
C151
0.1
470k
8
0.047
0.01
0.01
0.01
3
1
2
R97
R98
R99
R100
10k
8.2k
1.5k
470k
4
IC4A
M5218AFP
HV
VCC
IC8
TA7808S
4.95V
C171
C172
C173
C174
10
0.1
0.1
10
Q22
2SB1132
8.04V
RL1
C167
IC7
IC9
FTR-F3AA012E
TA78L05F
TA7805F
0.001
R115
C176
C177
2.2k
0.1
0.1
C170
0.1
C169
0.1
C175
C178
10
10
0.01
VCC
5V
VOL1
Q26
2SJ144
VBIAS
Q25
C192
C195
R128
R133
2SC4116
1
C194
0.01
470k
100k
R130
0.1
R124
R125
C188
100k
33k
33k
10
C190
1
0.0039
2
C185
C193
Q27
3
0.0022
1
C189
2SJ144
4
Q24
1
5
2SC4116
R129
6
Q28
470k
7
R126
R127
R131
2SK1069
R123
C186
C197
100k
100k
330
2.2k
820p
0.1
C191
0.0039
C196
0.1
R134
1k
MAIN BUS
OPT BUS
SMIC
SAFO
R155
R154
1M
1M
VBIAS
C217
C216
R153
R148
0.01
0.1
47k
IC11B
18k
M5218AFP
Q29
IC11A
8
R152
R151
DTC144EU
M5218AFP
3
1M
1M
R147
1
7
1.2k
2
R150
18k
C213 47p
C214
4
0.033
C215
220p
C218
0.1
MICDSC
R149
68k
VOL2
VCC
MICO
C239
MICI
1
DETO
DETI
0.24V
RL2
R247
FTR-B3GA4.5Z
C242
C243
22k
IC14
0.1
1000
D23
C240
LA4425A
1SS355
R179
1
1
5
R260
1M
4
18k
2
Q32
C241
C244
R181
2SC4116
0.001
1000
R180
3
4.7
22k
C245
0.1
CHASSIS
W2
ANT
4.66V
C317
GND
10
IC5
C161
NJM2211M
0.033
1
CAP 14
V+
R109
2
CAP 13
IN
15k
3
R 12
LOCK
4
LOOP 11
R110
C162 0.1
GND
RV-148
CP4
5
REF 10
R108
Q
6
NC 9
39k
Q
7
8
DATA
FSK
R106
R107
C164
47k
C163
100k
0.01
0.0022
IC6
TC7W14FU
R111
8
1
330
7
2
6
3
C160
5
4
0.1
C165
470p
[HOL], [FRG] only
J1
HV
HV
4
HV
HV
3
GND
GND
2
GND
GND
1
C326
C327
C180
C181
47p
47p
0.01
0.001
W1
VOL1
1
1
VOL2
2
2
GND
3
3
R135
R136
1M
IC10
1M
BU4066BCF
C201
C202
VDD 14
MMIC
R137
I/O
47p
47p
CONT.A 13
2.7k
O/I
C198
CONT.D 12
O/I
0.1
I/O 11
I/O
to LOGIC
O/I 10
CONT.B
C199
O/I 9
CONT.C
0.1
I/O 8
VEE
C200
SMIC
0.1
R280
10k
MICAF
R281
820
R144
R142
18k
1M
R138
+5V
1k
5
CK
SCK
R143
GND
33k
6
DATA
SDATA
OPTIN
OPTIN
C212
OPSTB
OPSTB
0.22
SCON
SCON
MICI
GND
R145
R139
C203 0.1
DETI
470k
1k
GND
MICO
GND
C204 0.1
DETO
VOL2
VCC
C205
0.1
AF1
R141 1k
PTT
PTT
HANG
R140 1k
HANG
MICE
MIC
HANDSET
GND
AF2
SPMIC
C208
C207
C209
0.01
470p
0.01
C206
D21
D20
AF
47p
DA204U
DA204U
AF1
C321
AF
47p
AFG
C210
470p
11 - 3
CHASSIS
J2
ANT
ANT
1
C6
C5
2
9p
9p
GND
GND
ANT UNIT
PWR-CORD BOARD
13.8V
HV
C10
GND
47p
C7
C1
47p
0.01
VR UNIT
R1
TP96N97-15F-
10KA-2345
J1
VOL1
1
VOL2
2
GND
3
W2
GND
J6
OPTION
UT-98
or
UT-112
J7
1
2
3
4
SP/MIC
5
6
7
8
J8
1
2
EXT SP

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