Sim Detect Trouble Shooting - LG -E410 Service Manual

4.17 SIM detect Trouble Shooting

Measurement
VREG_USIM1_2.85V
SIM1_RST
SIM1_IO
LGE Internal Use Only
START
Check "Single SIM
Settings"
SIM is checked?
Yes
SIM Card is inserted correctly?
Yes
TP2 or TP5 is 1.8V
or 3.0V?
Yes
TP1 or TP4 is 1.8V
or 3.0V?
Yes
TP3 or TP6 is 1.8V
or 3.0V and active?
Change the Main B/D
END
No
Check the SIM Slot.
No
insert SIM Card correctly
No
Change the Main B/D
No
Change the Main B/D
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4. TROUBLE SHOOTING
Only for training and service purposes