Main Unit (2); Main Unit (3); Main Unit (1); Ux-910 Main Unit (2) - Icom IC-910H Service Manual

12-9 UX-910 MAIN UNIT (2)

MAIN UNIT (2)

C9
6p
FI1
LFSN30N18C1280B
W5
C1 R3 C2
470p 5.6 4P
R2 R4 C3 C17
820 56 1p 4p
R5
TX:2.3
1.5k
RX:0
R8
150
L5
47nH C324
10p
CP32 CP31 13.8
HVR
to IC-910 1
2
PA unit
T+5
C318
0.001
+5
C82 L81
10µH
0.001
C81 R81 C83
0.1 TX:3.0
2.2k 10p
TX:4.4 RX:0
RX:3.0 C99
0.1
C84 R90
R83
0.0047 18k
RV-143
C98
47p
D81
MA77
R84
R89
56
10k
TX:2.3
RX:0
Q171
RN2425
+9
L161
+5
1µH
1RX9
R161
2.2k
D165
C161
TX:0
0.001 12M
D161
RX:3.8
MA77
12S
Q161
DTC144EU
DAN222
12S
D162
D168
MA77
1.2G (SUB):4.9 MA2S111
other :0
+9
TXS
C162
C310 TX:0 R162
12M
0.001
0.001 RX:3.0 2.2k 1.2G (MAIN):4.9
other :0
D163 3
MA77
12M 2
CP311
1
Q164
DTC144EU
Q165
D164
J311 C177 XP4315
MA77
0.001
IFM
25
24 GND
23
14V
22
21 CP15
+9
20
GND
19
DRES
18
TXS
17
16 RXS RXS
15 12TP 12M
to IC-910 1FOR
14
12PV
MAIN unit 13
OPB1
12
J2
11 -5V
PCK CK
10
PDAT DAT
9
12ST
8
12S
7 12PS
12DS
6
12UL
5
12REF
4
3 GND
14V
2 GND
IFS
1 L311
EXC-ELDR25C
CP312
+5
W311
1 8
2 7
3 6
C316
4 5
0.001
IC311
TC7W08F

MAIN UNIT (1)

+5
1LO
1LO
2LO
2LO 12ST
DAT
CK
12PS 12PS
DRES
DAT
DAT
CK CK
12DS
12DS
12DR 12DR
12UL
12UL
CNTY
CNTY
12C2
12C2
+5
+5
+9
+9
C304
-5V
-5V 0.001
R16
10
CP321 CP322
W243 TX:8.3 TX:9.0
RX:0 RX:0
W32
R15
TX:1.5
L11
10 6
RX:0
107nH L12
C322 47nH
C321 C323
C326
10p 47p 100p
47p
Q36
C22
2SK2854
10p
C12 C21
7p 6p
C8 13.8
4p
C18
7p
Q38
R7 2SK2855
220 R11 C320 C26
R14 C14
C7 220 5p 2p
C30 C31
2p 1k 47p
470 470
R12
2.7k
R31
C11 C13 0.15
TX:6.9 100p 10p
RX:0 R44
C19 C20 C328
47p 10P NTCCM16084lH
+5 10p
R6
4.7k R13
RV-148
C329
47p
12TP
C46
L31
0.001
10nH
R45
10k
L32
C325 50nH
C44
47p
100p
HVR
-5V
T+5
+9
+5
1TX9
R91
TX:7.0
100
RX:0
C94
C95
0.001 10p MP81
R92
D82
100 L82 L83 L84 L85
HSB88WS
0.56µH 0.47µH 617DB-1010 617DB-1010
C106 C86
C89
0.1 39p
150p
Q81
R101
2SC2712
820
R93 C100
0.1 C90
220 C91
18p R100
10p
56
Q163
1.2G selected:4.2
2SA1162
4.1
Q162 R164
DTC144EU 10k
R163 C171
TX:9.0
0.001
1k C163
RX:0
0.001
1.2G selected:0
Q166
L86
2SB1133
10µH
1TX9 1TX9
C96 C97
R167
C173 0.001 10p
100k
C172 0.001
13.0 10
4
5
R165
1k
6
TX:12.2
Q167 Q168
RX:13.0
DTA144EU 2SC2712
D166
1SS355
TX:0 R166
TX:4.9
470
RX:4.9
RX:0
+9 9.0
1RX9
IC161 IC162
BA09T TA7805F
Q170
C175
2SB1132
0.001
3 4
R169
C174 C164 C165
2 5 100k
R168
10 10 0.1
1K
1 6
C176 C166 C167
0.1 22 0.1
Q169
D167 XP4315 D169
TX:8.5
DAN222
MA2S111
RX:8.3
TX:4.8
TX:0 RX:0.8
RX:9.0
TX:8.5
RX:0
2LO
1LO
+5
IRX9
Q301
XP1113
R223
IC301 12GM 1 5 12M
100
BU4094BCFV
2
R342 C223 C224 C225
16 12GS 3 4 12S
1k 0.1 47p
470p
1 4
STR Q1
2 D Q2 5
6 CNTY
3 CLK Q3
15 7
OE Q4 L221 0.22µH
14 12C2
R301 Q5
Q6 13 12DR
100
12 C221
Q7 12PR
11 12AT 0.0047 R224
Q8
RV-145
C222
C302 9
QS
10 R221 220p
0.0047 QS
2.2k
8
Q283
R222
DTC144EU
ATT ON:4.7 120
+5
OFF:0
C281 C280
0.001 0.0047
R285
1k
From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library
W15 W16 W17 W18
IC21
M57762-02
W22 W23 W10 W11
7
1 2 3 4 5
13.8
8.8
C25 C33 C34 C327 C28
IC31A
10p
0.001 47p 100p 0.5p
R39 BA4558F
TX:2.3
RX:3.0
470k
R32 R34
8
1k 47k R43
1IC 2
470
1
2IC 3
R33 R35 4 R46
1k
1k 47k
R40
C35 R38
1k
C36
0.0047 C42 33k
C330 100
0.001
100p -4.7
R36
C48
33k
R42 0.001
100
C41 C43
R37
0.001 0.001
RV-148
C50
L22
0.001
56nH
1TX9
HVR
-5V
T+5
+9
1TX9
L112
TX:4.8
1µH
L111 RX:0
1µH
IC111
µPC2709T
L121 6 C111 FI101
R102 L122 R105
27nH 0.001 C101 WF447B
5.6 22nH 18
1 4 1
C122 C124 C103 3.5p
6p 0.001 2 3 5
4p
R106 C104
R104
1.5p
270 270
C121 C123 C125
10P
9p 18p
L133 R131
56nH
1k
C130
10p
R87
18
R86 R88
R85 270 270
1k
TX:4.7
C92 C93
RX:0
0.001 0.001
D83
1SV307
3.9
5.0
C169
10
D13
R232 R229 L224
1SV307
270 1k 10µH
C168 TX:0
0.1
RX:4.7
C262
R231 10p
C230
18 0.001
C261
R230 0.001 TX:4.9
270 C232 RX:0.3
0.001
Q172
RN2425
R+5
L243
1µH
C265
0.001
C263
C264
0.001
10p
C246
C247
C229
10p
0.001
4p
TX:0
L222
R248 RX:8.4
2.2µH
2.2k 0 W241
W223
FI241
C242 C243
WF447B
C226
Q221 3.5p 3.5p
100p TX:0 2 1
3SK241
RX:0.6
C245
C228 C255
R226 R228 15p
47p L241 0.1
100 100k
56nH L242 C244
56nH 1.5p
C227 R227 C241
0.001 10k 1.5P
W242
W19 W20 W21
R67
RV-150
W12 W13 W14 CP401
R65
33
RX_TX
C55
1p
C59
TX
47p
R41
100
+9 D504
RX 1SS385
L53
C56 C45
56nH
100 0.001
RL51
ARK115
R61
RV-150
0
C66
C60
C53
470p
47p
0.001
C47
0
R52 W63
0.47
10k
R53 L52 RX
22k 56nH
ICL
R51 6
C72 C73
7 R71
10k
0.001
5 10p 3.3k
TX:9.0
W51
R54 RX:0
IC31B
Q72
1k
BA4558F D32
L71 DTC144EU
DAN222
39nH
P. AMP ON
C74 Q73
L23 RX:4.9
0.001 2SC2712
C49 56nH
100p
0.1
C131 C58 R130
0.001 0.001 D130
C140
L134 82
MA8030
TX:3.2 56nH 0.1
RX:0
IC131
R139 C136 µPC8163TB-E3
C133 L135
56 470p
2p 5.6nH FI141
3 4
LOI GND
LFSN30N18C1280B
2 5
GND VCC
2
1 6
IFI RFO
R134
C102 C135 C155 C141
5.6
3.5p 470p 0.75p 470p
C137 C138
C143
10p 0.001
1p
B5
R136 C132
270 470p
C192
0.001
C134
R137
0.001
18
D9 C190 L181
W182
1SV307 0.001 6.8nH
R138
270
D241
R243 C182
1SV307
18 0.5p
C251 R242
R244
0.001 270
270 R181 C181
1k 3P
C252 R245
0.001 1k
L211
10nH C212
0.001
C267
C268
0.001 10p
C211 L201
0.001 39nH
W202
C202
3p
R201
1k
C201
12p
2LO
1LO
L244 56nH
L273
R281
56nH
100
C266 C248 R271 R272
10P
0.1 220 150 C282
D281
10
MA8030
R246
C274 C275 C277 L274
10
0.001 0.001 470p 2.7nH
TX:0
R273
10k RX:0.8
C260
IC241
C276 C278 FI281
µPC2721GV 0.001
0.001
470p LFSN30N18C1280B
TX:0
FI271
LFSN30N18C1280B RX:2.9
8 1
RF1 BB
C279
7 RF2 BF 2
6 2.5p
GND C 3
5 4 C273
IF VCC
2.5p
R247
C271
100
L275
2p
Q271
C240 5.6nH
R288
2SC5454
10p
RV-143
C257 C259
R274
0.001
0.1
6.8k
L281
56nH
C258
100p Q282
2SC2712 C287
0.0047
C286
0.1
ATT ON:3.3
OFF:0
12 - 8
L51
W52
56nH
P. AMP ON
RX:13.0V CHASSIS
D503
HSU88 J501
[12ANT]
L63
1812CS.122XKBC
R62
D502
100
HSU88
C70
C69 C71
0.0047
47p 0.001
C67
0.001
13.8
RX
Q71 R73
2SD1801 3.3
P. AMP ON
C76
R72
RX:4.3
0.001 R74 C77
330
470 0.1
R76
6.8k
C65
0.1
R75 C79
R77
3.3k 0.001
Q74 3.3k
2SC2712
R145 5.6
R144
R146
820
56
P. AMP ON
RX:13.8
TX:4.8
L144
RX:0
56nH
IC141
C144 C147
C146 µPC1678G L143 C151
470p
1P 0.5P 56nH 470p
8
1
IN VCC
2 GND GND 7
W142
3
GND GND 6
4 5
GND OUT
L142
L141
5.6nH
4.7nH
C145 C142
2p 2p
MP181
L183
1µH
4.8
C193
C188
C186 C187
10p
0.0047
10P 0.001
IC181
L184
µPC2709T
1µH 6
4 1
L182
C191 R185
5.6nH
5 3 2 0.001 18
C184
1P
R184 R186
270 270
C183 C185
5p 3p
L203
MP701
1µH
4.8
C213
10p
C206 C207 C208
10p 0.001 0.0047
L204
IC201
0.1µH µPC2709T
6
L202
39nH
4 1
C210 R205 C209
C204
5 3 2 0.001
1p 56 0.001
R204 R206
120 120
C203 C205
15p
22p
0.001 R282
C283 10
C306 C305 C285
47p 0.001
10p
C284
470p
C301
L283 R283
1.5p
5.6nH
120
C299
TX:0
2.5p
RX:3.4
C298
Q281 C300 C297
C288
NE34018 2.5p 2p 1.5p
TX:0
3p
RX:ATT ON:1.0
OFF:0.7 L289
L285 L286 L287
18nH 6.8nH
3.9nH 4.7nH
R287 C295
100 0.0047
C290 C289 C292 C294
R284
47p
47p 0.001 0.0047
68
MEASUREMENT CONDITIONS
C293
Ω
MULTIMETER:50k /V
0.001 W290
OSCLLOSCOPE:20MHz
TX:0 Display frequency:1295MHz
RX:ATT ON:2.6
SUPPLY VOLTAGE:13.8V
OFF:0.7
modulation at TX:none