3. TROUBLE SHOOTING
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Only for training and service purposes
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START
No
No
Check next step
Check TP1 +Vbatt OK?
Check TP2
0.5V≤TP2≤4.2V?
The Problem may be Other part
Check Logic part
Check DC-DC Power Block Refer to 3.3
Yes
Yes
+VPWR_RF
R1034
49.9
VPA
C1209
1n
C1010
4.7u
100p
C1113
C1112
100p
1.8p
L1096
8.2n
C1147
U1001
EAN62778301
ACPM-9020-TR1
6
7
4
8
3
5
9
2
10
1
11
PGND
VCC1
VCC2
RFIN
RFOUT
VEN
NC
ISO
VMODE
GND
CPL
4
C1109
1n
C1094
4.7u
PA0_R1
PA_ON1_L20
(R-005845)
QCT REVIEW
12/27
REV_A(04/22)
1_6/27
1.0_06/28
1.0_06/28
TP2
TP1