Icom IC-910H Service Manual page 142

12-9 UX-910 MAIN UNIT (2)
MAIN UNIT (2)
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
C324
47nH
10p
CP31
CP32 13.8
HVR
to IC-910 1
2
PA unit
T+5
C318
0.001
+5
C82 L81
0.001 10µH
C81
R81 C83
TX:3.0
0.1 10p
2.2k
TX:4.4
RX:0
RX:3.0
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
C161 D165
TX:0
D161 0.001 12M
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
2
12M
CP311
1
Q164
DTC144EU
Q165
D164
C177
J311 XP4315
MA77
0.001
25 IFM
24 GND
23
14V
22
21 CP15
+9
20
GND
19
18 DRES
TXS
17
RXS RXS
16
12TP 12M
15
to IC-910
14 1FOR
MAIN unit 13 12PV
OPB1
12
J2 -5V
11
PCK CK
10
PDAT DAT
9
8 12ST
12S
7 12PS
12DS
6
12UL
5
12REF
4
3 GND
14V
2 GND
IFS
1
CP312
+5
W311
1 8
2 7
3 6
C316
4 5
0.001
IC311
TC7W08F
MAIN UNIT (1)
+5
1LO
1LO
2LO 12ST
2LO
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
RX:0
W32
R15
TX:1.5
L11
10
RX:0
107nH L12
47nH
C321 C322 C323
C326
47p 100p
10p
47p
Q36
C9 C22
2SK2854
6p 10p
C12 C21
7p 6p
C8
4p
C18
7p
Q38
R7 2SK2855
C26
220 R11 C320
R14 C14
C7 220 5p 2p
C30
2p 1k 47p
470
R12
2.7k
R31
C11 C13
0.15
100p
TX:6.9 10p
RX:0 R44
C19 C20 C328
47p 10P NTCCM16084lH
R6 +5 10p
4.7k R13
RV-148
C329
47p
12TP
C46
0.001
R45
10k
C325 C44
47p
100p
HVR
-5V
T+5
+9
+5
1TX9
R91
TX:7.0
100
RX:0
C94 C95
0.001 10p MP81
C99
R92
0.1 D82
100 L82
L83 L84 L85
HSB88WS
0.56µH 0.47µH 617DB-1010 617DB-1010
C106
C86 C89
0.1
39p 150p
Q81
2SC2712
R93 C100
220 0.1 C90 C91
18p 10p R100
56
Q163
1.2G selected:4.2
2SA1162
4.1
Q162 R164
DTC144EU 10k
C171
R163
TX:9.0
C163 0.001
1k
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
10
4 13.0
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
Q170 BA09T
C175
2SB1132
0.001
3 4
R169
2 5 C174 C164 C165
R168 100k
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:0
L311
RX:9.0
EXC-ELDR25C
TX:8.5
RX:0
2LO
1LO
+5
IRX9
Q301
XP1113
R223
IC301 12GM 1 5 12M
100
BU4094BCFV
2
R342
C223 C224
16 12GS 3 4 12S
1k
470p 0.1
4
1 STR Q1
2 5
D Q2
3 6 CNTY
CLK Q3
15 7 L221
OE Q4
12C2
Q5 14
R301
13
Q6 12DR
100 C221
12 12PR
Q7
11 12AT 0.0047 R224
Q8
RV-145
C222
C302 9
QS
10 R221 220p
0.0047 QS
2.2k
8
Q283
R222
DTC144EU 120
ATT ON:4.7
+5
OFF:0
C281 C280
0.001 0.0047
R285
1k
TX:9.0 W15 W16 W17 W18
RX:0
IC21
M57762-02
W22 W23 W10 W11
6 7
1 2 3 4 5
13.8
13.8
C25 C33 C34 C327 C28
IC31A
10p
0.001 47p 100p 0.5p
R39 BA4558F
C31
470
470k
R32 R34
8
1k 47k
1IC 2
1
2IC 3
R46
R33 R35 4
1k
1k 47k R40
C35 R38
C36 1k
C42
0.0047 33k
C330 100
0.001
100p
R36
C48
33k
R42 0.001
100
C41 C43
R37
0.001 0.001
RV-148
L31
C50
L22
10nH
0.001 56nH
L32
50nH
HVR
-5V
T+5
+9
1TX9
L112
TX:4.8
1µH
L111 RX:0
1µH
IC111
µPC2709T
L121 L122 6 C111
R102 R105
5.6 27nH 0.001 18 C101
22nH
1 4 1
C122 C124 C103 3.5p
0.001 2 3 5
4p 6p
C104
R101 R104 R106
1.5p
820 270 270
C121 C123 C125
9p 18p 10P
L133
56nH
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
IC162
TA7805F
C169
10
D13
R232 L224
R229
1SV307
270 1k
10µH
C168 TX:0
0.1 RX:4.7
C262
R231 C230 10p
18 0.001
C261
TX:4.8
R230 0.001 TX:4.9
RX:0.8
270 C232
RX:0.3
0.001
Q172
RN2425
R+5
L243
1µH
C265
0.001
C263
C264
0.001
10p
C246 C247
C229
0.001 10p
4p
C225
TX:0
47p
R248 L222
RX:8.4
2.2k 2.2µH 0
0.22µH
W223
FI241
C242 C243
WF447B
C226 3.5p
Q221 3.5p
100p TX:0 2 1
3SK241
RX:0.6
C245
C228 C255
R226 R228 15p
47p
100 100k L241
L242 C244
56nH
56nH 1.5p
C227 R227 C241
10k
0.001 1.5P
W242
W19 W20 W21
W12 W13 W14 CP401
RX_TX
C55
8.8 1p C59
TX 47p
R41
100 +9 D504
RX 1SS385
C56 C45
TX:2.3
100 0.001
RL51
RX:3.0
ARK115
R61
R43
RV-150
470
0
C60
C53
47p
C47 0.001
R52 0 W63
0.47
10k
R53 L52
22k
56nH
-4.7 ICL
R51 6
C72 C73
7
10k
0.001
5 10p
TX:9.0
W51
R54 RX:0
IC31B
1k Q72
BA4558F D32
DTC144EU
L71
DAN222
39nH
1TX9
P. AMP ON
C74
L23 RX:4.9
0.001
C49
56nH
100p
0.1
C131 C58
R130
D130
0.001 0.001 C140
L134 82
TX:3.2 MA8030 0.1
56nH
RX:0
IC131
R139
C136 µPC8163TB-E3 L135
C133
56
470p 5.6nH
2p FI141
FI101 3 4
LOI GND
LFSN30N18C1280B
WF447B 2 5
GND VCC
2
1 6
IFI RFO
R134
C102 C135 C155 C141
5.6
3.5p 0.75p 470p
470p
C137
C138
10p 0.001
B5
R136 C132
R131
270 470p
1k C192
0.001
C130 C134
R137
10p 0.001
18 D9 C190
W182
1SV307 0.001
R138
270
D241
R243
1SV307
18
C251 R242 R244
0.001 270
270 R181
1k
C252 R245
0.001 1k
L211
10nH
C267
C268
0.001 10p
C211
0.001
W202
R201
1k
2LO
1LO
L244 56nH
L273
R281
56nH
100
C266 C248 R271 R272
10P
0.1 220 150
D281
MA8030
R246
C274 C275 C277 L274
10
0.001 0.001 470p
2.7nH
R273
10k
C260
IC241
C276 C278
0.001
W241 µPC2721GV
0.001
470p
FI271 TX:0
LFSN30N18C1280B RX:2.9
8 RF1 BB 1
7 2 C279
RF2 BF
6 3 2.5p
GND C
5 4 C273
IF VCC
2.5p
R247
C271
100
L275
2p
Q271
C240 5.6nH
R288
2SC5454
10p
RV-143
C257 C259
R274
0.1 0.001
0.1
6.8k
L281
56nH
C258
100p Q282
2SC2712
C286
0.1
ATT ON:3.3
OFF:0
12 - 8
L51
W52
56nH
R67
P. AMP ON
RV-150
RX:13.0V CHASSIS
D503
HSU88 J501
[12ANT]
R65
33
L63
1812CS.122XKBC
D502 R62
100
L53
HSU88
56nH
C69 C70 C71
47p 0.001 0.0047
C66 C67
470p 0.001
13.8
RX RX
Q71 R73
2SD1801 3.3
P. AMP ON
R71 C76
R72
RX:4.3
3.3k 0.001 C77
330 R74
0.1
470
R76
6.8k
C65
0.1
C79
Q73 R75 R77
0.001
2SC2712 Q74 3.3k
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 C146 C147 C151
µPC1678G L143
1P 470p
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
C143
2p
1p 2p
MP181
L183
1µH
4.8
C193
C186 C187 C188
10p
10P 0.001 0.0047
IC181
L184
µPC2709T
6
L181 1µH
6.8nH
4 1
L182
C191 R185
5.6nH 5 3 2
0.001 18
C182
0.5p
C184
1P
R184 R186
270 270
C181 C183 C185
3P 3p
5p
L203
MP701
1µH
4.8
C212 C213
0.001 10p
C206 C207 C208
10p 0.001 0.0047
L204
IC201
0.1µH µPC2709T
L201 6
L202
39nH
39nH
4 1
C204 C210 R205 C209
5 3 2 0.001 56 0.001
1p
C202
3p
R204 R206
120 120
C203 C205
C201
15p
12p 22p
0.001 R282
C283 10
C306 C305 C285
C282
47p 0.001
10p
10 C284
470p
C301
TX:0 L283 R283
1.5p
RX:0.8 5.6nH 120
C299
FI281 TX:0
2.5p
LFSN30N18C1280B
RX:3.4
Q281 C300 C297 C298
C288 2.5p 2p 1.5p
NE34018
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
C287 MULTIMETER:50k /V
0.001 W290
0.0047 OSCLLOSCOPE:20MHz
TX:0
Display frequency:1295MHz
RX:ATT ON:2.6
SUPPLY VOLTAGE:13.8V
OFF:0.7
modulation at TX:none