LG -E400f Service Manual page 73

Test point Description
Test point
TP1 '+3V_WLAN_WCN
TP 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, , 3 is OK?
Yes
SDIO ok?
UART ok?
No
Board Change
No
Check the power block
Yes
Module Check
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4. TROUBLE SHOOTING
Only for training and service purposes