3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
3.3 Checking DC-DC Block
BOT
U2000
TP2
TP1
U2000
16
15
14
13
12
11
17
10
18
9
19
8
20
7
21
6
22
5
23
4
24
3
25
2
26
1
27
28
VDD_BUCK
GND_BUCK
GND1
SDATA
NC1
VOUT_BOOST
GND2
GND_BOOST
AMP_OUT
VSW_BUCK
VDD_GP
GND3
C_GSM
SCLK
NC2
VSW_BOOST
C_SW_BUCK1
USID_LSB
C_SW_BUCK2
PA_VBATT
BYP_LOAD
VDD_1P8
C_BUCK1
C_BUCK2
MPP1
BYP_BATT
VDD_BATT1
VDD_BATT2
2.2u
C2014
C2013
10u
+1V8_VREG_S3A
+VPWR_RF
VPA_GSM
VPA
22
u
C2015
C2008
10u
1.5u
L2014
C2016
10u
GND
RFFE1_DATA
RFFE1_CLK
VPA|VPA_GSM
01/30
CHECK!!
06/22
(R-001590)
QCT REVIEW
QCT REVIEW
(R-001625, Should be changed after resistration - MPZ1608S600AT)
QCT REVIEW
(R-001625, Should be changed after resistration - KA4953-AE)
QCT REVIEW
(R-001632)
No booster
03/06
01/30
01/30
03/09
C_4/17
TP1 (VPWR_RF)
TP2(VPA)