LG LG-D618 - Getting to Know Your Phone; Using the Memory Card

3. TROUBLE SHOOTING
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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Schematic of the Antenna Switch Block
Check TP1~7 (High Level)
1.4V < Voltage < 3.0V
Check the TP8,9
No
Yes
Check the ANT Logic in each mode
R1100
1.8n
DNI
R1101
R1102
DNI
4.7uC1110
C1111 10u
10uC1113
22pC1115
+VPA_BATT0
22pC1116 22pC1117
C1118 22p
22pC1119
C1109 22p
C1114
10n
SKY77573-31
U1100
SKY77573-31
TRX1
24
GND3
3
VCC1
4
VCC2
5
GND4
6
GND17
25
GND1
1
GND11 GND14 GND13 GND12
GND9
11
GND8
10
GND6
8
RX1
GND2
2
ANT
SPDT_IN
SPDT_OUT
RX2
GND5
7
GND10
12
GND7
9
GND15
22
GND16
23
NC1
33
VBATT
32
GND20
31
TRX4
30
GND19
29
TRX3
28
GND18
27
TRX2
26
NC2
34
RF_IN
36
SPDT
35
SW0
38
SW1
37
HB_EN
39
LB_EN
40
MODE0
41
MODE1
42
PGND
43
C1112
100p
22pC1120 22pC1121
PA0_R_1
PA0_R_0
SPDT_SEL
ANT0_SW_SEL_0
ANT0_SW_SEL_1 ANT0_SW_SEL_2
ANT0_SW_SEL_3
WTR_TX1_OUT
TX_MODULE_TRX_2
TX_MODULE_TRX_4
TX_MODULE_TRX_1
TX_MODULE_TRX_3
for W7 CI (06/07)
W7
for W7 CI (06/07)
TP8
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP9