Icom ID-51A Service Manual - Page 48

Top View, Dc In], B7721f

Page 48 highlights

[ANT] V0 V5 V10 V15 V20 V25 V30 V35 V40 V45 V50 The combination of top side and bottom side of this • MAIN UNIT (TOP VIEW) [MIC] [SP] [DC IN] J2 1 C546 C549 C511 R218 L501 C516 C521 C547 C544 C553 L513 D504 C252 C248 C552 D503 C505 IC15 C23 L13 C24 C143 C965 Q780 Q17 C78 R59 Q906 Q907 C782 R951 Q2 EP4 C7 + C11 C5 C13 D20 C1 R174 D21 D783 C373 5 R178 R177 J5 J4 R217 R213 C254 C245 C351 C237 L44 R210 L42 C250 R205 R191 R188 C215 R194 R189 R169 C177 C194 R171 IC12 C198 EP13 EP15 C230 C236 L43 C207 IC14 C189 Q45 C234 R216 R206 R215 C208 R187 R203 R183 C231 C246 R275 C233 R180 R184 C201 R181 6 C242 Q8 C508 C507 C251 L21 R44 EP16 R45 R46 D37 L502 L505 C518 L506 C525 C555 R506 L515 C514 R505 C512 C510 L504 L503 C411 C513 R784 R770 R48 R61 D782 R54 R69 C62 R783 C71 C65 C785 R65 R53 L782 C786 L403 C410 C788 C783 C784 C781 L781 R504 C556 L516 R502 IC5 C515 Q503 C409 C408 L913 L402 C407 EP501 Q501 Q502 Q908 R780 R973 C503 C504 C863 R781 R974 C406 C986 R975 C990 C864 Q854 R952 S2 L911 L910 R963 S2 R959 L912 C21 C372 EP780 R787 EP2 C127 R123 R122 - L41 C352 C327 C183 R121 C126 Q51 C348 R4 R9 Q1 C9 C347 C346 R13 IC1 Q3 R12 D1 R11 R19 C15 EP18 R1 R6 R5 D9 C958 C954 R79 C84 C94 C952 C951 Q19 C757 R76 C956 R754 D745 L905 C966 R444 R401 C780 R404 R403 C412 C402 C403 D908 C401 C415 C953 D904 C967 D905 IC952 C328 Q48 R253 C329 R158 C136 D4 R103 Q26 C96 C92 R90 C102 R71 C91 C74 R112 R110 R113 C110 D3 C989 C210 R67 C991 C468 R93 C52 C791 C466 C55 C464 C70 C59 R159 D14 C167 C974 R827 C480 C476 J450 R60 C67 IC6 C73 EP19 R55 C82 C185 R62 C195 R956 C182 C179 L12 C169 Q38 C178 R165 C478 C336 C40 C33 R41 D821 D802 Q471 Q472 C172 C166 Q12 R254 C479 C475 C474 C481 C477 C330 C176 R163 R164 Q37 C173 D17 Q470 C43 C32 C57 D831 C473 C471 IC3 C472 C470 C485 R450 EP450 R837 D812 C49 R47 C85 C45 X1 C903 R954 IC450 C454 R451 J451 R901 C914 C901 C961 C962 R955 C963 C981 R950 C957 C461 C982 C456 R460 C463 R461 C462 R458 Q451 R459 C455 C458 R455 C453 C452 C451 C450 R452 R454 C457 EP40 C465 C467 C36 R37 C993 C39 C30 R902 R457 C469 C992 Q900 C904 C460 L901 C907 C908 C906 C459 L902 R472 R473 4 H65 H60 H55 H50 H45 H40 H35 H30 H25 H20 H15 H10 H5 [PTT] R166 3 L11 FI1 X2 D18 D19 Q10 C199 X900 Q11 EP6 C10 H70 C44 EP5 C4 VCC C924 C918 C910 HV CHGC CHGH TXI-V H75 BTVIN T3C DASTB1 BTDETO BPLLSTB GND VCOMOD AUNLK J2 ALV APLLSTB H80 TTEMP REFMOD AR3 C998 CLONE PCON PSC AFON INTPTT MICGND EXTMIC H85 C181 R167 R168 C174 C175 ANOIS ARSSI ADET GND 3VS IOEN IOSTB1 AAF 5VS BRSSI BNOIS GND BDETO BAF BLV DATA CK DALD R3C BR3 32K SDIO_R SCLK_R SEN_R RES_R J3 R466 C75 C68 C53 C995 C997 C996 C20 EP21 C366 C370 SP1 (CHASSIS) FI2 C25 B7721F FI900 R910 C862 Q853 R962 C865 C935 R917 C938 R919 R923 R920 C937 C936 R918 C934 Q904 R931 C933 R925 R926 C941 C900 R928 R927 R922 Q903 R930 Q902 R924 C932 C931 C930 C368 EP22 2 R14 IC17 C63 H90 H0 V15 • VCO1 UNIT (TOP VIEW) C210 C208 C356 C349 D306 C209 C350 Q202 C390 C345 R208 Q308 R89 R82 R348 C341 R352 L302 C211 L202 L201 C206 C202 C207 R207 R203 C204 R204 R205 D304 Q201 C203 L200 D53 R376 L203 C101 C108 C98 R101 R83 L4 R1 D11 C126 D305 R356 C374 R2 L6 C200 L204 C361 R358 R371 R360 C389 C368 L306 D308 R202 C201 R200 C391 C119 L5 D1 C366 R117 C118 L307 R366 Q311 C375 C376 R363 R372 R201 Q27 C124 C125 C132 R126 R375 C386 V5 V10 V15 • VCO2 UNIT (TOP VIEW) C210 C208 L307 R366 C389 R371 C374 C356 D305 C349 C209 C350 Q202 C390 C345 R208 Q308 R89 R82 R348 C341 R352 L302 C211 L202 C202 D306 D308 R356 R358 C366 Q311 C368 L306 C375 C376 R363 D304 R360 C361 C207 R372 L204 C118 L201 C206 R207 R203 R202 C201 Q201 C204 R204 R205 C200 R200 C391 R201 R117 C126 C203 L200 L203 C101 D53 C108 L6 C119 Q27 D12 D11 R1 R376 C98 R101 R83 L4 R2 L5 C124 D1 C125 R375 C386 V10 C132 R126 V5 Q200 R114 R206 Q1 R100 D10 C103 D103 C205 C85 Q200 R114 R206 Q1 R100 D10 C103 D103 C205 C85 C1 L3 R120 C214 D12 C2 R3 C1 L3 C3 R3 C2 R120 C214 C3 V0 V0 H20 H15 H10 H5 H0 H20 H15 H10 H5 H0 9-3

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9-3
The combination of top side and bottom side of this
• MAIN UNIT
(TOP VIEW)
[PTT]
[MIC]
[SP]
[DC IN]
[ANT]
• VCO1 UNIT
(TOP VIEW)
• VCO2 UNIT
(TOP VIEW)
BTVIN
TXI-V
BR3
ANOIS
ARSSI
5VS
DALD
CK
DATA
SCLK_R
32K
BAF
BLV
R3C
BDETO
EXTMIC
BP
LLSTB
T3C
AFON
BTDETO
DASTB1
VCOMOD
GND
GND
GND
AUNLK
ALV
APLLSTB
TTEMP
CHGH
CHGC
HV
VCC
ADET
IOSTB1
AAF
BRSSI
BNOIS
3VS
IOEN
AR3
REFMOD
INTPTT
PCON
RES_R
SEN_R
SDIO_R
CLONE
MICGND
PSC
SP1 (CHASSIS)
C1
C4
C5
C7
C9
C10
C11
C13
C15
C20
C21
C23
C24
C25
C30
C32
C33
C36
C39
C40
C43
C44
C45
C49
C52
C53
C55
C57
C59
C62
C63
C65
C67
C68
C70
C71
C73
C74
C75
C78
C82
C84
C85
C91
C92
C94
C96
C102
C110
C126
C127
C136
C143
C166
C167
C169
C172
C173
C174
C175
C176
C177
C178
C179
C181
C182
C183
C185
C189
C194
C195
C198
C199
C201
C207
C208
C210
C215
C230
C231
C233
C234
C236
C237
C242
C245
C246
C248
C250
C251
C252
C254
C327
C328
C329
C330
C336
C346
C347
C348
C351
C352
C366
C368
C370
C372
C373
C401
C402
C403
C406
C407
C408
C409
C410
C411
C412
C415
C450
C451
C452
C453
C454
C455
C456
C457
C458
C459
C460
C461
C462
C463
C464
C465
C466
C467
C468
C469
C470
C471
C472
C473
C474
C475
C476
C477
C478
C479
C480
C481
C485
C503
C504
C505
C507
C508
C510
C511
C512
C513
C514
C515
C516
C518
C521
C525
C544
C546
C547
C549
C552
C553
C555
C556
C757
C780
C781
C782
C783
C784
C785
C786
C788
C791
C862
C863
C864
C865
C900
C901
C903
C904
C906
C907
C908
C910
C914
C918
C924
C930
C931
C932
C933
C934
C935
C936
C937
C938
C941
C951
C952
C953
C954
C956
C957
C958
C961
C962
C963
C965
C966
C967
C974
C981
C982
C986
C989
C990
C991
C992
C993
C995
C996
C997
C998
D1
D3
D4
D9
D14
D17
D18
D19
D20
D21
D37
D503
D504
D745
D782
D783
D802
D812
D821
D831
D904
D905
D908
EP2
EP4
EP5
EP6
EP13
EP15
EP16
EP18
EP19
EP21
EP22
EP40
EP450
EP501
EP780
FI1
FI2
FI900
IC1
IC3
IC5
IC6
IC12
IC14
IC15
IC17
IC450
IC952
J2
J2
J3
J4
J5
J450
J451
L11
L12
L13
L21
L41
L42
L43
L44
L402
L403
L501
L502
L503
L504
L505
L506
L513
L515
L516
L781
L782
L901
L902
L905
L910
L911
L912
L913
Q1
Q2
Q3
Q8
Q10
Q11
Q12
Q17
Q19
Q26
Q37
Q38
Q45
Q48
Q51
Q451
Q470
Q471
Q472
Q501
Q502
Q503
Q780
Q853
Q854
Q900
Q902
Q903
Q904
Q906 Q907
Q908
R1
R4
R5
R6
R9
R11
R12
R13
R14
R19
R37
R41
R44
R45
R46
R47
R48
R53
R54
R55
R59
R60
R61
R62
R65
R67
R69
R71
R76
R79
R90
R93
R103
R110
R112
R113
R121
R122
R123
R158
R159
R163
R164
R165
R166
R167
R168
R169
R171
R174
R177
R178
R180
R181
R183
R184
R187
R188
R189
R191
R194
R203
R205
R206
R210
R213
R215
R216
R217
R218
R253
R254
R275
R401
R403
R404
R444
R450
R451
R452
R454
R455
R457
R458
R459
R460
R461
R466
3
7
4
R
2
7
4
R
R502
R504
R505
R506
R754
R770
R780
R781
R783
R784
R787
R827
R837
R901
R902
R910
R917
R918
R919
R920
R922
R923
R924
R925
R926
R927
R928
R930
R931
R950
R951
R952
R954
R955
R956
R959
R962
R963
R973
R974
R975
S2
S2
X1
X2
X900
+
-
B7721F
1
2
3
5
4
6
H0
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
H55
H60
H65
H70
H75
H80
H85
H90
V0
V5
V10
V15
V20
V25
V30
V35
V40
V45
V50
C1
C2
C3
C85
C98
C101
C103
C108
C118
C119
C124
C125
C126
C132
C200
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C214
C341
C345
C349
C350
C356
C361
C366
C368
C374
C375
C376
C386
C389
C390
C391
D1
D10
D11
D12
D53
D103
D304
D305
D306
D308
L3
L4
L5
L6
L200
L201
L202
L203
L204
L302
L306
L307
Q1
Q27
Q200
Q201
Q202
Q308
Q311
R1
R2
R3
R82
R83
R89
R100
R101
R114
R117
R120
R126
R200
R201
R202
R203
R204
R205
R206
R207
R208
R348
R352
R356
R358
R360
R363
R366
R371
R372
R375
R376
H0
H5
H10
H15
H20
V0
V5
V10
V15
C1
C2
C3
C85
C98
C101
C103
C108
C118
C119
C124
C125
C126
C132
C200
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C214
C341
C345
C349
C350
C356
C361
C366
C368
C374
C375
C376
C386
C389
C390
C391
D1
D10
D11
D12
D53
D103
D304
D305
D306
D308
L3
L4
L5
L6
L200
L201
L202
L203
L204
L302
L306
L307
Q1
Q27
Q200
Q201
Q202
Q308
Q311
R1
R2
R3
R82
R83
R89
R100
R101
R114
R117
R120
R126
R200
R201
R202
R203
R204
R205
R206
R207
R208
R348
R352
R356
R358
R360
R363
R366
R371
R372
R375
R376
H0
H5
H10
H15
H20
V0
V5
V10
V15