Icom ID-31A Service Manual page 33

[DIAL/VOL]
• LOGIC UNIT
V45 V40
(BOTTOM VIEW)
C44
C33
C38
R108 R107
C102
S12
To EP1 (CHASSIS)
D22
C97
J1
R99
R98
R33
R34
R21
IC2
R14
J4
C18
C19
C22 C7
C505
[DATA] R97
J4
Q11
R100
R101
R105
C95
D21
D23
R88
R104
C507
R113
HV
R190 VCC
CHGH
CHGC
TXI-V
C171
BTVIN
MC1
AFON
SPMUTE
WN
Q21
DAFS
CLONE
GND
CTCIN
PCON
TTEMP
D31
R3C
BTDETO
R191
BEEP
R211
C180 TXMUTE
VCO_MUTE
C210
R197
VCO_SEL
C203 SQL
C190
INTPTT
R210 C201 GND
R227 EXTMIC
R277
R220
C196
C206
V35 V30 V25 V20 V15 V10
D14
R46
R15 R9
C11 C4 C3
C503
R280 C58
C56
C36
J1 C24
C78
C31
R48
C81
IC5
R74
IC1
C86
R4
R264
C88 R77
C211
C84
C194
R208
C185 C149
R169
C199
Q19 C189 C172
R202 EP12
EP20
IC3
C197
R219
C187
R200
C98
C186 R195
C181 R196
IC9
R204
C516
C191
C509
C101
R214
R255
R189
D29
C214
C155
C132 R144 C513
R256 R269
R125 R158 R263
R159 R267
R260
C115 R126 R124 C112 C126
R268
R180
IC15
C156 C170
R175
R261
R140
R130
R132 C165
R119 C163
C123
C119 C160
R141
C141
R154 R147
C124
R146
IC14
R150
C520
C105
C137
R112
IC13
C107 R118
R162 C144 C151
C143
R134
R151
NOIS R133
RSSI Q17
C139
DMOD R135
DDET
DAFO
C122
C131
3VS
T3C
PS3
5VS
GND
MICAMPO L3
R143
D_AS
FMMUTE
LV
CTCOUT
GND
PLLSW
PLLCK
PLLDATA
PLLSTB
PPS R114
UNLK
DADATA C110
DACK
DALD
C104
R59
C67 C76
• MAIN UNIT
V5 V0
(BOTTOM VIEW)
V50
J5
R66
R64
C72
C51
D7
D35
R244 R278
D34 C74
C217
D15
C212
C90
R94 C48
R80 J4
R18
R217
R222 C207 R164
IC20
R224 C193
R229 R230
R225
R240
C138
C129
C140
MP55
C135
J2
C106
R254
L2
R117
R115
L1
V45 V40 V35 V30 V25 V20
MP1
C335
R265
C320
C316
C324
C353 C326
L44
C334
R246
C339
C310 C311 D32
L33
C304 C305 C309
D30
R241
L31
D29 C297
C299
C290
L28
C279
EP17
EP11
R229
Q46
C273
R227
R226 C280
R207
C234
L23
C294
R30 R25
C24
C264 R222
IC2
C46
C50
C357
C38
R159
Q6
C34
C165
C48
C167
R268 R119 C126
Q10
R214 R260 C253
C35
C238
R197 Q44 R117
C202
C240 R209
C199
D4 C235
D10
C108
R182
C103
D11
R100
R193
C218
C102
C226
C196
R195
R172
C210
C101
C214 R124
R173
R179 C193
EP3
C342
R118
C345
C157
C344
C159
R145
C343
C147
C160
C129
C359
Q31
R64
R63 C66
L3
R14
C63
9 - 2
The combination of this page and next page shows
the top side and bottom side of actual P.C. board.
V15 V10 V5 V0
C319
R249
L32
C303
C315
C285
C281
C269
L25
R224
C261 R223
R220
C233
R194
C207
EP13 C189
R189
C198
R188
IC12
R169
C158
Q30
R156
C153
C148 C140
R137
R130
C132 C67
R126
R60 C59 C70
Q29
C144
IC6
C137
L7
C138
C57
R82
Q21
IC3
C90
C43
L1
R49
IC4