Pa Unit (2) - Icom IC-910H Service Manual

12-4 PA UNIT (2)

PA UNIT (2)
D117
MA4PH224
VPA
L117
RX :13.57 1812CS.122XKBC
L118
144M TX:0.3
440M TX:13.57 R117 1812CS.122XKBC
RX :13.57
100
R118
144M TX:12.9
10k
440M TX:13.57
C379 C117
144MHz TX:2.23
0.001 0.001
other :0
Q117
DTC114EU
VYGR
TX:4.83
D100
RX:0
MA77
TX:2.41
R107
RX:0
W263
680
W60
C106
C102
W61 R102 0.1
18 0.001
L102
W62
0.33 H
Q101
W63 D101
2SK2854
R104
MA77
R100 R103 68
330 330
C108
470p
R110
56 R105 R106
C104
W305
2.2k 4.7k
0.1
to 2
1
UX-910
440MHz TX:3.37
other :0
VCC
UVBB
UT9L
PAHV
RX :0
RX V MAIN:4.43 RX V MAIN:0
Q1
0 144M TX:0
RX other :0 RX other:0 2SK302
440M TX:0.47
144M TX :0 144M TX:0
440M TX :5.85 440M TX:6.64
L1
C5 C8
LS-164
33p 0.001
C3
D2
L11
J1 100p
P1 MA77
0.68 H C9
to MAIN UMAIN
0.001
unit J52
C28 C4
D1
56p 33p
MA77
RX U MAIN:5.21 C2
0.0047
RX other :0.13
144M TX :0.13 C76 C74
R28 56p 56p L71 0.1 H
440M TX :0.11
L47
J40 R1 100
0.12 H
430M 2LO 1k
from PLL
C72
L72
unit J551
33p
RX U SUB:4.62 0.22 H
C52 C59
RX other :0 68p 68p
144M TX :4.62 RX :5.6
440M TX :0
144M TX:5.6 C75
440M TX:0.11 100p C73 C71
56p 56p
RX U SUB:5.4
RX other :0.18
144M TX :5.4
J30 440M TX :0 D31 C67
R30
P30
MA77 0.0047
1k
to MAIN USUB
unit J652
RX U MAIN:3.76
RX other :0
R31
144M TX :0 EP32
1k
440M TX :3.72
Q30 C31
RX U MAIN:4.43
DTC144EU 0.0047
RX other :4.58
144M TX :4.58 D32 D30
Q33
MA77
440M TX :0 MA77
DTC144EU
C938
0.001
R32
C933 0.001
4.7k
C56 220p
Q32
DTC144EU
C55 220p
0.001
C941
EP31
C946 0.001
14V
L51
C35
J39
HF50ACC32213-B 0.001
16 14V
14V C939 0.001
15
UTU1 EP55
14
5V EP54
13
UPRI EP50
12
UT9V
11
EP51
10 VUMS
to MAIN
9 UR9V
unit J1351
UATT
8
VUT9 EP53 EP52 EP56
7 C57
POWS C37
6 220p
47p
FOR
5
C58
4 REF
220p
3 43PV
2 NC2
GND 4
1
5
6
C919
0.001
Q21
XP4312
C942
0.001
R63 R64
560 NTCCM16083NH
R65
390
5V
5V C64
5VL
R61 56p
5VL
RV-143 L22
VUMS5
VUMS5
LS-480
C929
R62
0.001
ICH 10k
ICH
ICL
ICL
HV
HV
D81 FOR C61
DAN202U 0.0047
R68
100
C63
R60 C62
VFOR UFOR
2.2k 0.001
0.0047
VFOR
C87
0.001
D82 REF
DAN202U UT9V
UATT
RX :1.74
VREF UREF
C80
VREF
144M TX:1.74
0.001
C88
440M TX:0
0.001
UTU2
UTU2
BAND
BAND
PRV
PRV
VT9V UTUNE1
VT9V
PA UNIT (1)
C89 C90
470 470
TX:2.14
RX:0
TX:2.85
C110
RX:0
0.1 TX:2.14
13.0
RX:0
J931
C121 C120
L103 R124
0.001 1
6.8nH 560 0.001
2
3
C125 4
C375 C122
0.1
5p 10p
R111
R133
470 L123
Q121
R130 100
0.15 H
2SK2973 TX:0.78
R121
1.2k
RX:0
56
R127
R108
10 R131
33 EVN-2ACA00B23
R126 R132
R122 R125
470 C130 470
2.2k 10
0.001
R123 L122
C123 4.7k HF50ACC322513-B
0.1
C129
C126 C128 C127 R134
0.001 0.1
470p 0.001 2.2k
RX :0
RX :0
RX :0 144M TX:0
144M TX:0 144M TX:0 440M TX:6.49
440M TX:8.8
C11 440M TX:3.1
33p
Q3
L2 C24 C15 C16 C17
R4
2SC2714
LS-145 10p 1p 1p 8p
1k
C18
C26 0.0047
33p C13 R8
R5 L4 2.2k R10
R6 15p
1k 0.22 H 220
100 L3
C12 R11
0.22 H
Q2 2.2k
12p
2SK302
C25
R2
0.001 C19
560
0.0047
R9
220
W5
W7
W3 C68
10p
RX :0
144M TX:0
440M TX:5.7 EP330
D40 C43 C14
MA77 7p 22p
L381
0.1 H
D41
MA77
R40 IC40
5 3 2 PC2709T
3.3k C44 C53 R43
2p 7p 10
4 1
C382
L40 L41
C50 12p
39nH 39nH
6 0.001
C381
R42 R44
39p
470 470
C54
D42
27p
C41 4.76
MA77
7p
L192
R196
1 H
C47 1k
C51
0.0047
L44 220p
C40 C42
18p 2.2 H
R37 18p R38
47 680 C330 C195
C196
0.001 0.001 0.0047
C49 R39 C48
0.001 1k 0.0047
EP221
C923
C318
C86
470p 0.001
R249 R251
C924 22p
C293 680 47
0.001 R250 D242
C394
0.001
1k 0.001
MA77
3 L280 R240
L281
LS-539 FI280 3.3k
LS-539
2
FL-131
C226
0.001
1
C281 C282
C39 C36
R280
8p 7p
47p 0.001
1.5k
Q281
R281
XP4312 C280 C283
1.5k
0.0047 0.0047
4 3 4 3
5 2 5 2
R285
6 1 6 1 47k C284
RX U SUB:8.85 22p
C38 RX other :0
0.001 Q282 RX :8.8
144M TX :0
XP4312 144M TX:8.8
D9 440M TX :0
440M TX:0
Q11 MA77
L282 L283
L23
2SK508 FI281
LS-539
LS-477 LS-539
FL-130
W232 D10
MA77
C285
0.0047
R66 R67 C286
C287
R284 C290
1.8k 8p 7p
1.8k
2.2k 0.01
R282
1.5k
R283
1.5k
R286
C289
EP61 W64 47k C288
22p
0.0047
C82
RX U MAIN:8.85
0.001
RX other :0
144M TX :0
D80
C81
DAN202U 440M TX :0
47p
R80
C925
0.001 C930 4.7k
0.001
C124
0.001
C147 C146 C145
39p 39p 7p
RX
C136 144M TX:0
0.001 L131 440M TX:1.62
C134 C135
EXC-ELDR25C
470 470p
C144
0.0047
C133 C151 C152
L130 C150
13.8
0.0047 0.001
LA-252 18p 18p
13.8
13.8
C90 R90
470p 200
C91 L132
C142
Q930 470 LA-549
47p
2SK2975 C92
C143 470
J932
0.001
C137
4 C140
0.001
3 39p Q951
2 XP4312
C141
Q131 4 3
1
39p
SRFJ7044
C132
5 2
15p
6 1
DRV BOARD
TX:2.79
RX:0
Q950
L950
W951 DTC114EU
0.25-1.9-13TL
C177 R137
5p 100
R950
10k
RX :0
R138 R135 144M TX:9.1
C131
RV-109 EVN-2ACA00B14 R136 440M TX:0 C952 C951
0.001 0.001
0.001
2.2k
R952
R951
100
470
VCC
RX :13.7
144M TX:0.52
440M TX:13.6
UVBB
UT9L
PAHV
L97 15nH
C22 R12 C98 1p
R101
22p 5.6
330
C97 C99
10p 10p
R14 R13
820 820
L5
0.1 H
R300
C23
3.3k
33p
L10
C20
0.22 H
0.001
W202
C419
120p
RX :0
144M TX:0
440M TX:2.33
FI200
FI201
LFSC25N LFSC25N
1 2 1
D201
D190
C200
L382 L190 L191 R201 1SV308
HSB88WS 0.001 3 4 3
0.15 H 617DB-1010 617DB-1010 18
R331
C331 2.2k
C384
470p
C333
5p
0.001
C393
C383
C392 C391
39p 10p C340
10p 10p
0.001
R200 R203 C341
L391 R338
4.8 270 270
0.001
22nH 2.2k
R342
39
L195 L196
D203
Q201 C332
8.2nH 15nH
R340
XP4312 C219 1SV308 470p
0.001 150
4 3
R333
C323 C324
R341
12p 5p 2.2k
EP201
5 2 150
6 1
C320 C321 C322
12p 15p 10p C85
0.001 C239
0.001
EP242
W241
W242
C576
EP241
D241 MA77 0.001
C325 C244 C251
D240 0.001 0.001 0.001
L240
MA77 L244
18nH 18nH
C253
C240
0.5p
L225
0.001
RX :6.05 27nH
C252
R222 C327 C328
144M TX:6.05
1.5p
560 15p 6p
440M TX:0.1
C254 C241 C242
15p 22p 22p
RX :0.76
C319
144M TX:0.76 7p
L221 440M TX:0
C227
1 H C225
5p L224
22p
27nH
C232
Q220
L223 C230 7p
2SC3356
0.1 H 220p R230
R221
150
C223
100
0.001
D220
C260
MA77 L222
C220 2p
617DB-1010
R223 R226
0.0047
10 R225 330
1k
D221
MA77
L220
R261
617PT-1026 R224 R227 RX :0.04
100k
10 330
144M TX:0.04
440M TX:0
RX :8.22
144M TX:8.22 R260
C229
150
440M TX:0.1 Q221
220p
2SC3356
C231
C228
R228 0.001
5p
C221 C222 10k
R269
0.0047 0.001
1k
C407
EP220
0.001
L152 L153
EXC-ELDR25C LA-245
C165
C164
RX :0 27p
39p
144M TX:0
C166 440M TX:0.72
:0 R152
47p
33
C163 C173
C162
27p 4p C174
39p
200p
RX :0 D184
144M TX:0 Q152 XB15A407
2SC3102
440M TX:0.06 C158
C156 C329
47p C148
2p
15p
D952 47p
C153
MA4PH224
27p
C176
0.001
D951
MA4PH224
C155
C154
15p
20p Q151
2SC3102
C175
200p
R953
R954
180
10k R154 C149
100 47p
C161
L151 27p
L154
EXC-ELDR25C LA-245
C953
C157
R188
0.001 47p
C178 C159 180
C172
C168 39p 27p
4p 13.8
C171 47p
47
RX :0
144M TX:0
440M TX:0.71
EP154
EP153
W153
13.7
RX :0
144M TX:13.15
C950
C413
C411
0.001 440M TX:0
0.1
220p
C412
0.0047
C311
0.0047
R301 R304 13.8
C310
3.3k 3.3k
C312 220p
0.1
C309 C304 C305
C300 470
C301 470 0.0047
R303
0.0047
0.0047
3.3k
C306
470p
R305
0.012
F301 F302
C418
C367
S-N5054 #01
120p
F300 470p
C303
FGB 4A
470p
C302
C414 C415 C416 C417 S-N5054 #01
0.001
120p 120p 47p 47p
IC200 D207
R357
PC2710 1SV308
2.2k
2
D202
C338 1SV308 2 3 5
C180
R205 C205 C206 L321 R208
4 470p L201
0.001
18 0.001 0.001 12nH 18
LR-404 1 4
R332
2.2k
C371 1p
L203
C339 0.001 6
82nH
R180
C199
C370 C372
0.001 2.2k
8p 8p
D209
1SV308
C361
R336
C207 C208 470p
2.2k C343 R344
0.001
0.001 100k 470p
3 4
D206 2 5
C335 R351
1SV308
470p 2.2k
1 6
R199 R345
2.2k 1k
Q202 C374
4.78 XP4312 0.001
Q203 C351
0.001
DTC114EU
C345
0.001
EP245
EP342 EP341 W331
L242
1 H
C326 C248 C249 C347 C348
0.001 470p 0.001 47p 0.001
6 IC240
L241 L246 L247 L245
PC2710 R247
15nH 10nH 27nH 18nH 33
4 1
C243
R244
C246 C250
3p C399
5.6
0.001 5 3 2 0.001 R246 R248
5p
C256
R242 180 180
820 1.5p
C397 R245 C398
4p 820 5p
C245
12p
C257 C255
10p 10p
RX :8.58
144M TX:8.58
440M TX:0
L262
C274 C275
0.001 470p
15nH
C263 C264 C266 C267 R264
0.75p 0.75p 0.75p 1.5p 18
Q260
3SK177
C268
C261 C265
12p
C258
15p L260 18p L261
1.5p RX :0.79
C3328A-12NG C3328A-12NG
144M TX:0.79
440M TX:0
C276
C278
0.001
470p
D262
D260 D261
1SV286
R265
1SV286
R262 1SV286 R263
47
100k 100k C277
470p
C271 C272
470p
0.001
C262 C269 C270
0.001 0.001 0.001
W261 W262
12 - 4
C192
R185
220p
RX :0 RX :0 1k
144M TX:0 144M TX:0
C191
R184
440M TX:2.31 440M TX:0.73
10p
68
D181
L181
D182 C194 L180
HSU88
XB15A407 0.001 LA-69 LA-69
L184
D183 LA-252
C185
XB15A407
1p
C187 L182
2p 1812CS.122XKBC
C115 D180
D185 C184
C188
3p HSU88
XB15A407 3p
3p L185
R186
HF50ACC322513-B
68
C186 C189 C350 EP406
7p 10p 5p
C190
0.001
440MHz R187
1k
12.56 PRE ON(RX):12.55 C238
C169 PRE ON(TX):0 220p
0.001 PRE OFF :0 R171
5.6k
C182 Q182 C402
L186
220p
0.001 2SB1132
HF50ACC322513-B
Q180
R189
XP4312
10k C193
4 3
0.001
Q183 UFOR UREF
5 2
DTC114EU
EP193
6 1 UPRI
C181 R190
0.001 R182
R183
6.8k
68k
680
C202 C201
C235
220p
220p
0.001
C234
C233
470p
470p
PRV
C237 L194
440MHz
220p HF50ACC322513-B
PRE ON :11.8
PRE OFF:12.47 C204
VT9V
220p
EP181
UT9V
VUT9L
43PV
EP195
ICL
ICH
C179
0.001
R306
1
HV
C346
0.001 14V
J602
VCC
RL300 J603
ALD112
J601
FI202 C368 J600
Q300
LFSC25N 470p
1 2 DTC114EU
POWSL
D303
DAN202U
3 4 D208
R358 1SV308
D265
L301 C308
2.2k
0.001
LR-404 MA4PH224
C307
C210
C314
0.001 5p
Q200 0.001
2SC3357
D266
R364
C209 MA4PH224
C369
0.001
18
470p
C218
C356 C357
0.001
RX :0
0.001 0.001
R363
144M TX:0
270 R365
R362
440M TX:7.65
D212
2.2k 270
R214
1SV308
R215
10 RX :0
R361
470
144M TX:0
18
440M TX:0.28
L267
C364
LA-252
R359 470p R211
R354 R212
L205
270 150 C298
2.2k 330
15nH
R360
0.5p
270
R213
C354 RX :0 1.8k
D227
0.001 C212
144M TX:0
MA4PH224
0.001
440M TX:1.05
W332 W333 C213 C214
C215 R27
C113
0.1 470p
0.001 47
30p
L269
L207
22nH
1
C217
C216
0.001
0.001
430M 1LO J240
BAND
C296 6p
D264
1SV237
L263
1 H
C294
C279 470p
C295
470p
0.001 440MHz
C403
ATT ON(RX):0.73
0.001
ATT ON(TX):0
ATT OFF :0
R267
EP290
100k
440MHz
ATT ON(RX):1.47
RX :1.89 R270 ATT ON(TX):0.1
C259
144M TX:1.89 470
10p L268 ATT OFF :0
C297
440M TX:0 10.5nH
0.001
R266
27k
D263
C292
1SV286 0.001
R268
J50
RX :8.97
100k
L264
144M TX:8.97 1
Q261
C404 5nH
440M TX:0 2
0.001 2SC2712
J51
C291
C405 1
0.001
0.001
R271 2
D272
C299
47k
1SS355 0.001
440MHz
EP401 ATT ON(RX):3.26
C408 ATT ON(TX):0.81
0.001 440MHz
ATT OFF :0
R273
ATT ON(RX):2.62
1k
ATT ON(TX):0.1
ATT OFF :0
MEASUREMENT CONDITIONS
VHF:144MHz,FM
UHF:440MHz,FM
C313
DIGITALMULTIMETER
0.001
Unit:Volt
CHASSIS J2
[UHF ANT]
W180
EP602
W302
P300
W303
W301
W300
EP601
from PLL
unit J421
to MAIN
unit J1853
J1 SP1
1
+
2 -