3. TROUBLE SHOOTING
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START
No
Check next step
Check TP1 2.7V OK?
The Problem may be Other part
Check Logic part
The Problem may be Other part
Check Logic part
No
Yes
Check High Level
of each mode ?(1.5V≤TP )
Check TP2 With Control Logic in each
mode
Yes
FL11021
5
2
6
4
3
1
VD
D
GND
PORT
2
ANT
PORT
1
VCTL
L11114
DNI
C11122
100p
100p
C11128
10n
C11117
100p
C11130
C11129
1.5p
C11135 1.8n
+2V7_VREG_L16
TX_OUT_B7_B38_B40
LTE_B7_B40_SW_CTL1
VDD : High
TX_B40
TRX_B7
L
H
LTE_B7_B40_SW_CTL1
TP2
TP1