3. TROUBLE SHOOTING
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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.8 WIFI/BT Trouble Shooting
3.8.1 WIFI/BT IC Component
Reference
Description
ANT5100/ANT5101
C-Clip/Connected to antenna
FL5100
BPF
U5100
WCN3620
<Min Top>
<Min Bot>
1
40
1
A
AY
R6620
C6613
R4
109
C4188
C6105
C4
190
C4171
C2329
D5100
C4
160
R2304
R4134
C1653
C4
156
C2
102
C2328
R6621
C1630
U5100
R4107
L5104
C9
910
SC20001
C1
109
C4
196
U8700
TP4100
C5118
C4
132
C2
384
U1201
C1631
D10006
R2
212
C1627
L6610
C4
121
C2
397
C1
C8
951
C164
5
C7
105
FL10000
C2
398
C1
111
L1
106
C1
118
C2351
U1
100
C1619
C2105
L5101
C6612
FL1604
C1647
C5
111
C5117
C4175
C5106
U2100
TP4103
C150
9
C4100
R4131
R1504
C8700
C1615
C4203
C2
383
C1604
R6422
C4148
FB510
0
C6927
C4186
L4133
R1100
C6925
C4149
C4155
C1613
C2
393
R1503
FL1100
L2101
C5119
R9107
R2302
R692
3
C150
5
FB6100
C4159
SC20005
C2403
C410
5
TP6106
MIC6921
R2
208
R4105
C1601
C6619
C1
618
R2
301
C2
347
L51
05
R6103
D9910
L1601
R4141
R2
210
C164
3
C2
402
R2
209
VA7204
C2
364
C4189
R4103
C2396
L1104
L1999
C4187
C1
100
CN6810
C4130
TP6100
C4
197
L2100
C4153
R4138
C2113
C4141
SC20006
C692
3
L1103
C2
399
FB6923
C2368
C410
3
D8
951
C4151
U4190
C2
401
TP6101
C1651
C1652
R4135
R2
207
C1646
C160
0
ZD413
0
R10000
R4142
C4134
C4194
TP2110
C6103
R150
2
C4200
C4
161
C5
109
C1
101
C4
164
C1624
VA
6603
C1614
L1607
L4131
SC20009
R4
110
C1513
C2
311
R1501
R2
214
R4106
TP3201
R2110
R6104
L4130
C1632
C6611
C1606
TP2214
C4158
C5
100
FB692
1
C2
348
C4170
C6107
SC20003
C1635
R1606
R6615
C1637
C2104
L4136
C4
131
R2303
C6926
L160
3
FB6612
C1629
C1
117
C161
7
L1605
C2
310
C1506
R2
211
C4195
C5
105
SC10006
C4
101
VA
6601
C2
100
C4174
C5
124
C5103
C6615
U4100
C4135
C1607
C4154
R2
203
R6614
R4139
R2
102
C1623
C1640
C2
394
C4182
R2200
C4201
C1621
L5103
R2108
R1
101
L2102
TP2109
VA9101
C10000
R610
5
C4152
C1634
C4168
L1600
L99
11
C1
12
0
C1639
C1641
C1507
FL1601
L1604
C1102
R6619
R2100
R4104
ANT
111
3
C4
146
R8
400
R6622
C6108
U4193
SC20010
R1401
CN10001
C5
113
L1608
C1
202
C5101
L1501
SC20007
C2
317
R2
101
R6102
C5115
C1104
C6106
X4100
C5
122
R4209
C661
0
C7
100
C161
1
U8400
C4102
C4147
C1626
C1625
FB6613
L1
10
5
C4122
SC20015
C1612
C1
110
R2
213
C4140
C4
177
C161
6
FL1602
R6613
C4145
C1
12
1
C1
112
C5
114
C1500
FL510
0
R6612
R1500
L2103
R2205
L1200
C6620
C10001
C2360
C151
1
ANT1115
C416
6
R6106
U1601
C1638
C1501
C4169
R2
103
C4162
C1620
C2106
C4202
ANT1112
L1602
C2367
L4134
C1516
R4108
CN
4
R4
113
CN9100
C2
361
C5125
C7
101
C1649
R6921
U6600
C1628
C1
116
C2
406
C1650
C2
313
L1102
D6927
C1602
C2330
R1
102
C4191
C2
363
C2112
C1654
L4132
C4
123
L1101
C4150
C2350
C4124
U1600
C6104
C1648
D6929
C2
316
U6100
C164
4
C1
113
SC20004
C2
318
C2359
C1636
R2300
C2
349
C151
0
C4
199
SC20008
VA
6604
C1203
C4165
R4132
C1642
C4176
D9911
R692
4
R4102
C5104
R6107
C7
104
C1609
C1200
C1603
C5123
C6101
D6928
C150
3
R2106
L9910
L1609
C1605
PID1
C6102
C5
108
U3100
D10000
VA
6602
C2
103
C4106
C4144
C6606
C151
2
FB6600
C1
115
FL10001
C150
4
R4
114
C1508
FB6611
C6100
R4130
C692
2
R2
204
C5116
C11
14
C5107
C2362
C6109
C1608
R4
111
C2
312
C5112
R2
104
FL7102
R6108
R6100
ANT
111
4
C1
119
U4192
C1103
R6616
C1201
C1610
R2
105
C2
314
C10002
L5102
C2
385
C6605
FL160
3
C2107
R6922
VA
6600
C1622
C2
101
C2315
FL7101
C4167
C4163
C5
102
C1502
L23
00
U1500
C692
8
R6101
7
8
14
P
N
A
B
C
D
H
G
F
E
M L
K
J
1
14
15
16
30
10
11
20
12
13
24
10
6
5
6
5
10
R3
207
R7300
C692
4
C9
505
C1141
R7200
L1127
C2
322
CN930
0
ZD8800
FL7400
R9
102
C7
300
R3
204
L6700
SC10009
C9501
C2
333
C320
0
L6811
C2
345
R692
0
C7501
C7402
C320
3
FB6920
C7
102
C2336
C1
144
VA7203
C2
374
R9510
C9
102
D6926
MIC6920
C11
43
C6811
U3200
D1
000
8
R9
104
C9503
C2
307
C2377
VA
740
5
R4
133
C9311
VA7102
C11
70
R3
202
SC1000
8
R9103
C1148
C11
67
VA9506
C2
305
C4143
C7
103
C2327
C9
103
C11
55
R1602
VA
951
3
C4137
R3
203
C7304
FL7302
C2395
C2
375
R9
501
C2
404
VA7200
C2382
C6921
U8100
C2
334
CN1
102
R9100
VA
740
4
SW1
101
ZD8801
R1
000
2
U7500
D1
000
7
C1145
SC1000
3
SC1000
4
C2346
J660
0
C230
9
FL7301
U8800
C6812
CN730
0
C2
371
C4157
Q8950
C9502
VA
951
2
C2
303
C7504
C1146
C2354
VA
950
8
C7
302
R3
201
C2
320
R1
000
3
D1
000
3
L7500
C8801
VA9501
R8951
CN7400
R5125
R5127
R9
500
L6810
R3
205
C2
337
C2
304
ANT
1108
R8802
C4172
ZD8802
C320
2
L1120
SC10011
C4139
C9100
C6
810
C2342
C2
338
C320
1
C4136
L1
119
R320
8
R11
03
C6
700
C4940
C2353
C320
6
C9
101
VA7101
C9
504
L1124
C2
340
C2392
C2
366
L1148
VA
950
2
C2
365
R3
206
R9
508
FL7
300
C810
1
C2
306
VA
910
0
C7503
C2
344
C2
355
R895
0
L494
0
C2331
SC10007
C2
332
ANT
1110
C2
111
S9500
C1
656
D6925
VA
950
9
C9507
VA7202
C7
301
C2
370
D10004
C1160
U1102
TP9301
C2
302
C4138
R3
200
C1166
C2
372
C2379
C9
310
VA
7103
C880
0
U4940
R895
4
C8400
C2373
L1
126
LD8950
C2376
L6701
C1
176
R8952
R9505
C1
149
C1168
VA7406
C2
335
L1
147
L1123
C2
339
D9100
C2
358
C2
300
C6
701
C840
1
C2389
R9511
R9506
L1121
VA9510
D10005
C2110
C9
309
C2386
C11
69
L1118
C2388
LD9830
C2391
C7502
SC10010
C2
400
C7202
VA9505
C4142
C950
6
ANT5100
L1
122
C6920
R9
509
D8950
C8952
R880
0
VA7303
C1147
CN7100
C2
369
R1
000
1
CN1
10
3
C2381
C11
71
C1173
ANT5101
R9507
VA
950
4
VA
6810
Q8951
C9
312
R7
401
R8801
C8950
R9
504
C2356
SC10002
FL1105
PT1600
VA
950
0
VA
68
11
TP3200
D6924
R5126
R9101
L1
125
C7
303
R9106
C810
0
C2390
R9105
C2
380
C7
403
C2
321
R8953
VA
7400
VA7100
R8803
C320
4
R7201
C7500
CN10000
CN7200
VA7201
R8955
C7
400
VA9507
U8950
C7401
CN3
C7
201
ANT10003
R840
1
C2
308
VA9511
C2
343
C2352
C2
341
ANT10004
C320
5
ANT
1109
C4941
C2
301
C2
319
C2378
C2387
Connected
to antenna
WCN3620
BPF