3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
Test point
Net name
Description
TP1
+1V8_VREG_L6
Power for BCM4334 digital I/O circuits
TP2
VDD_LN
Power for BCM4334 analog, digital circuits.
Power for WLAN driver amplifier circuits
TP3
VBAT_FEM
Power for WLAN 2.4GHz PA circuits
3.8 BT&WIFI PART
3.8.1 BT&WIFI Trouble Shooting
BT&WIFI control signals are generate WCN 3620
START
Check ANT5101
Check TP1,2,3,
TP1 C5109 is 1.8v
TP2 C5103 is 1.3v
TP3 R5301 is 3.3v
Remove the foreign substance
in ANT5101
ANT 5101 : Ant. Contact
U5100 : BCM4334
U4100 : PM8926
Yes
No
Check U5100
Check U4100
Yes
No
Yes