LG GD580 - Bluetooth Trouble

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Only for training and service purposes
4. Trouble Shooting
4
.
11 Bl
ue
t
oo
th
T
rou
bl
e
Bluetooth IC (STLC2593) gets power from PMIC (AB3000) and clock (MCLK) from RFIC.
(RF3000) After checking them, Bluetooth RF path should be examined.
4.11.1 Bluetooth Power path
start
1. Check
BT IC Block
TP1: 1.8V , TP2 : 2.75V
1
Go to 4.11.2
OK
NG
Check AB3000
(U300)
Main PCB TOP
TP1
TP2
1
0603
0
1
2C
u
1
.
0
6
L
5
L
4
L
8
F
7F
4D
6
E
7
N
4J
2
M
2C
1C
8
M
3C
2B
1L
C_R
VS
R
_TB
2L
C_
R
V
SR_
T
B
D_
R
V
SR
_T
B
MS
D
_
R
V
S
R
_
T
B
N_
RVS
R
_
T
B
FR
_
R
VSR_
T
B
L
R
T
C_
G
E
R
_
TB
D
VH
_TB
DLC
_
D
D
V_T
B
1
C
N
2C
N
3
CN
4C
N
5
C
N
6C
N
5
7
V
2
_
K
DD
V
8V
1
_
E
D
D
V
u
1
.
0
2
1
2C
0603
TP1
TP2