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7-116
RX_FE
Ref Des = 5280 - 5379
9.3V_TO_IF
R5303
4.7K
C5287
C5284
Q5250
.01uF
R5301
.01uF
L5283
10K
22nH
R5305
R5300
4.7K
4.7K
R5302
1K
C5362
220pF
L5280
1uH
R5337
C5291
C5292
TP5301
D5280
22K
.01uF
220pF
RF_IN
D5301
HPF to remove VHF
C5285
C5290
C5283
C5288
D5300
8.2pF
C5293
4.7pF
220pF
8.2pF
2pF
L5282
L5284
L5281
D5311
NU
18nH
390nH
18nH
NU
C5289
C5282
.01uF
220pF
RX_FILT_1_A
R5332
R5304
Q5251
RF_ATTN_1_A
1K
1.5K
C5363
C5364
220pF
1000pF
RF_ATTN_2_A
RF_ATTN_3_A
RX_Inj_SW
LO_IN
Figure 7-88. HUE4040A Receiver Front-End Schematic
June 15, 2005
C5294
.01uF
C5301
C5303
.01uF
.01uF
R5310
1K
L5288
82nH
NU
Q5253
L5290
1uH
C5296
C5299
R5308
220pF
.01uF
68
R5306
12K
L5286
33nH
L5285
100nH
D5302
C5307
C5295
C5304
C5300
RF_IN_1 RF_OUT_1
4.7pF
220pF
D5303
220pF
220pF
C5297
R5309
FE_CNTL_1
Q5252
1.5pF
27
L5289
R5307
Preselector
390nH
22K
L5287
Ref Des = 5250 - 5279
R5330
NU
47
22nH
C5302
D5281
.01uF
R5333
47
C5366
C5365
220pF
1000pF
D5313
NU
Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board
U5301
C5280
1 IN
3
OUT
220pF
9.3V_TO_IF
GND
C5311
C5315
C5318
2
.01uF
4.7uF
4.7uF
R5314
R5313
4.7K
4.7K
NU
9.3V_TO_IF
R5317
1K
C5313
.01uF
C5309
NU
Q5254
R5312
NU
.01uF
10K
NU
C5316
C5317
R5316
1K
220pF
470pF
NU
L5292
390nH
NU
L5291
1uH
NU
Second LNA
D5304
R5311
10K
U5302
L5308
C5312
NU
3 RFIN
6
RFOUT
Q5257
8.2nH
220pF
R5335
L5293
1 2 4 5
NU 0
390nH
NU
390nH
C5310
220pF
4
5
C5314
U5300
C5305
.01uF
GND
R5334
R5315
2
220pF
Q5255
1K
C5308
1.5K
1
3
C5368
C5306
C5367
220pF
1000pF
220pF
220pF
AGC/Attenuator circuit
9.3V_TO_IF
C5322
C5327
100pF
.01uF
L5298
Image filter and IF suck-out
22nH
C5319
C5332
C5341
.01uF
2.7pF
2.7pF
L5297
C5328
L5300
C5336
L5301
C5342
Q5256
22nH
22nH
22nH
9.1pF
9.1pF
18pF
C5326
C5331
C5339
C5344
10pF
9.1pF
6.8pF
9.1pF
L5299
C5325
C5338
.033uF
C5335
R5318
1K
.033uF
220pF
NU
L5296
L5294
1uH
NU
39nH
R5322
D5305
2.4K
C5370
NU
4.3pF
C5320
L5309
C5329
12pF
R5336
5.6nH
C5333
100pF
0
L5295
470pF
NU
R5321
NU
C5361
C5360
C5321
NU
120
R5319
220pF
C5343
.033uF
TP5302
NU
470
220pF
22pF
L5302
C5330
12nH
NU
220pF
Q5258
C5324
C5323
220pF
D5306
.033uF
C5334
C5337
C5340
R5323
5.6V
15K
220pF
220pF
.033uF
NU
TP5304
TP5303
MIXER_RF_IN
IF_OUT_IF
IF
LO
Mixer
Ref Des = 5380 - 5399
D5282
D5307
NU
C5347
L5304
22nH
22pF
C5349
6.8pF
R5326
R5324
R5325
15
15
15
C5346
C5348
L5303
L5305
C5356
C5357
68nH
.033uF
15nH
220pF
.033uF
220pF
C5345
R5327
180
470pF
TO_1st_MIXER
16
RFOUT1 6
C5354
RFIN
L5306
L5307
1
RFOUT2 7
VCNTRL
14
2
VD1
VG1
4.7nH
4.7nH
47pF
11
G2
VG2 3
U5303
C5355
C5358
C5359
8
NC1
9
NC2
10pF
10pF
1.5pF
10
NC3
NU
NU
15
NC4
C5351
C5353
R5329
1K
4
5 1213
17
.033uF
220pF
NU
R5328
C5350
C5352
5.6K
220pF
.033uF
NU
6815854H01-A
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Troubleshooting
