LG FM300 Service Manual page 32

R13 DNI
C19 C6
100n 1u
C7
2.2u
C14 C13
10u 10u
TP3
LTE_PWR_EN
LGE Internal Use Only
R103 100K
R7 2.7K
R12 100K
30
VIN5
21
LX3
1 20
FB LX2
2 19
V5V U1 PGND6
3 18
AGND1 PGND5
SC424
4 17
VOUT PGND4
EUSY0369702
5 16
VIN PGND3
6 15
VLDO LX1
7
BST
31
LX4
C5 1u
TP4
LTE_EN
C126
DNI
KRX102U
EQBA0000601
CN300
53
1
LT_USIM_DET/
3
TP320
5
TP321
7
TP322
9
11
13
15
17
19
21
23
TP307
25
TP315
27
29
31
33
35
37
39
41
43
45
47
TP317
49
TP318
51
TP306
54
ENZY0030701
24-6407-052-001-888
L101
2.2u
C10
10n
C2
DNI
C11
47p
C300 C301 C302 C303 C304 C305
22u 10u 4.7u 1u 0.1u 0.1u
2
TP6
4
6
TP305
8
SIM_PWR
10
SIM_DATA
12
SIM_CLK
14
SIM_RST/
16
TP304
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
TP308
48
TP314
50
52
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4. TROUBLE SHOOTING
TP5
C119 C120 C105
22u 22u 22u
C121
0.1u
VDD_3.75
Only for training and service purposes
VDD_3.75