LG -E405 Service Manual page 63

Test point Description
Test point
TP1 +3V_WLAN_WCN
TP2 VREG_MSME_1.8V
TP3 VREG_MSME_1.8V
LGE Internal Use Only
Net name Description
Power for BT/WiFi BB core and WiFi power Amp. (V Batt)
Power for BT power Amp. (1.8V)
Power for host interface (1.8V)
START
TP1, 2, 3 is OK?
Yes
SDIO ok?
UART ok?
No
Board Change
TP1
TP3
No
Check the power block
Yes
Module Check
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4. TROUBLE SHOOTING
TP2
Only for training and service purposes