4. Trouble shooting
GB110 BB Trouble shooting
4.1 Power On Trouble
Test Point
Check Points :
- Battery Voltage(Need to over 3.35V)
- Power-On key detection(PWRON signal)
- Outputs of LDOs U101(EGV)
Voltage
VBUF
2.8V
VMEM
2.8V
VIO
2.8V
VSIM
2.85V
VRF0
1.5V
VANA
2.5V
PART
TP1
TP2
TP3
TP4
TP5
TP6
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