Icom ID-31A - Setting Operating Frequency

9 - 1
SECTION 9
.
BOARD LAYOUTS
• MAIN UNIT
(TOP VIEW)
[PTT]
[ANT]
[MIC]
+–
[SP]
[DC IN]
• LOGIC UNIT
(TOP VIEW)
MP28
SP1 (CHASSIS)
The combination of this page and next page shows
the top side and bottom side of actual P.C. board.
C1
C3
C5
C7
C8
C9
C11
C12
C13
C14
C15
C17
C21
C23
C25
C27
C28
C29
C30
C32
C33
C36
C39
C40
C45
C49
C54
C60
C62
C65
C68
C71
C72
C73
C74
C77
C78
C80
C81
C82
C83
C84
C86
C88
C89
C91
C92
C93
C94
C95
C96
C99
C100
C104
C105
C106
C107
C110
C112
C113
C114
C115
C116
C117
C120
C123
C127
C128
C136
C143
C145
C155
C163
C166
C168
C169
C170
C171
C172
C173
C174
C175
C176
C178
C179
C180
C181
C182
C183
C185
C187
C190
C195
C197
C200
C201
C203
C204
C206
C208
C216
C217
C220
C221
C223
C225
C228
C229
C232
C236
C237
C242
C246
C250
C251
C252
C260
C265
C267
C270
C274
C282
C287
C327
C328
C329
C330
C331
C333
C336
C337
C338
C340
C341
C346
C347
C348
C351
C352
C354
C356
C358
C360
C361
C362
C363
D1
D2
D3
D9
D15
D16
D17
D18
D19
D20
D21
D26
D28
D34
D37
EP2
EP4
EP7
EP10
EP14
EP15
EP16
EP18
EP19
FI1 FI2
IC1
IC5
IC9
IC10
IC11
IC15
IC16
J2
J2
J3
J4
J5
L11
L12
L13
L14
L17
L21
L22
L24
L41
L42
MP9
MP10
Q1
Q2
Q3
Q7
Q8
Q12
Q14
Q15
Q17
Q19
Q23
Q24
Q26
Q33Q34
Q35
Q36
Q37
Q38
Q39
Q40
Q41
Q43
Q45
Q48
Q49
Q50
R4
R5 R6
R7
R8
R9
R10
R11
R12
R13
R17
R18
R19
R21 R22
R26
R27
R32
R34
R35 R36
R37
R41
R44
R45
R46
R47
R48
R50
R51
R52
R53
R54
R55
R56
R58
R59
R61
R62
R65
R67
R68
R69
R71
R72
R73
R76
R78
R79
R81
R83
R84
R88
R90
R91
R92
R94
R97
R98
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R115
R116
R125
R127
R138
R139
R144
R153
R154 R155
R157
R158
R160
R161
R162
R163
R164
R165
R166
R167
R168
R170
R174
R176
R180
R181
R183
R184
R185
R186
R187
R196
R198
R199
R200
R201
R202
R204
R205
R210
R213
R215
R217
R218
R232
R236
R237
R242
R253
R254
R255
R256
R257
R258
R259
R261
R262
R263
R267
R273
R274
R275
S1
S2
S2
X1
X2
+-
B-7489C
1
2
3
4
5
6
H0
H5
H10
H15
H20
H25H30
H35
H40
H45
H50
H55
H60
H65
H70
H75
V0 V5 V10 V15 V20 V25 V30 V35 V40 V45 V50
BT1
C28
C29
C43
C65
C89
C92
C108
C116
C177
C178
C182
C204
C208
C523
C526
D1
D2
D3
D4 D9
D10 D11
D12
D26
D28
D30
D32
D33
DS1
DS2
DS3
DS4
DS5
DS6
DS7
EP5
IC11
IC19
J2
MC1
Q8Q9
Q10
Q20
Q24
R8
R10
R11 R12
R13
R16
R17
R22
R23
R24
R25
R27 R29
R30
R47 R51 55R25R
R56
R57
R72
R73
R85
R86
R161
R171
R176 R178
R181
R184
R185
R186
R188
R206
R228
R231
R232
R233
R234
R235 R236 R238
R241
R248
R265
R270 R272
R284
S1
S2
S3
S4
S5S6S7
S8
S9
S10
S11
B-7490E
H0H5H10H15H20H25H30H35H40H45H50H55H60H65H70H75H80H85
V0 V5 V10 V15 V20 V25 V30 V35 V40 V45