3. TROUBLE SHOOTING
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Only for training and service purposes
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Chenck ANT_Logic Refer to 3.4
Check TP1
Over 21 dBm?
Check TP2
Over 21 dBm?
Check TP3
Over ‐3dBm?
RF Tx Level is OK
Yes
No
Check WTR2605
Check FL1600
Yes
No
Check PAM
Yes
No
10u
C1617
TOL=0.0
1
R1600
51
+VPA0
100p
C1676
1.5n
C1618
+VPA_BATT0
DNI
C1607
C1613
10u
SKY77761
EAN62687101
U1600
PGND
11
VCC1
1
VCC2
10
RFIN
2
RFOUT
9
VMODE_1
3
CPL_IN
8
VMODE_0
4
GND
7
VEN
5
CPL_OUT
6
DNI
C1610
C1609
DNI
DNI
C1608
L1616
1n
10n
C1614
DNI
C1666
C1675
DNI
100p
C1671
100p
C1672
PA0_R_0
PA0_R_1
CPL_IN_OUT
PA0_ON_1
DRBFM
TP2
TP3