3. TROUBLE SHOOTING
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Only for training and service purposes
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3.5.2.1 Checking GSM PAM DC Power Circuit
TOP
U1000
TP1
TP2
VPA
FL1005
4
3
5
2
6
1
IN
G3
G1
NC
OUT G2
U1000
43
42
41
40
39
37
38
35
36
34
33
7
2
8
1
6
5
4
3
RFIN_B26
RFIN_B5_B8
GND1
VIO
RFIN_B1_B2
SCLK
RFIN_B4
GND2
RFOUT_B4
RFOUT_B3
GND15
RFOUT_B1
GND16
NC
GND17
GND18
GND19
GND20
PGND
10u
C1009
C1114
1n
C1022 2.4n
DNI
L1016
C1001
33p
C1006
33p
DNI
L1007
C1021 1n
VPA_GS
M
+1V8_VREG_S3A_RF
C1002
33p
C1012 33p
1n
C1103
+VPWR_RF
L1002
0.5p
L1015
0.5p
C1007
DNI
C1005
10u
TX_OUT_B1_B2
TX_OUT_B3_B4
TX_OUT_B5_B8
HC-PA_APT_MIPI
12/17
REV_B(05/26)
REV_A(04/22)
REV_1.0(07/04)
TP1
TP2