Power Supply Check Point - Pantech GB310 Service Manual

GB310 Service Manual

6.5.2 Power Supply Check Point

Test
Step
point
U305
2-1 3.8V
Pin#1
U305
2-2 2.8V
Pin#5
U303
2-3 3.8V
Pin#4
U303
2-4 2.8V
Pin#5
Typical Value Condition
2, 3, 4, 5
2, 3, 4, 5
2, 3, 4, 5
2, 3, 4, 5
Fig.6-1 U305 Regulator Power Supply PCB Layout
TYP 3.8V
Fig.6-2
U305 Regulator
PANTECH
Check route connection : VBAT
Check route connection : VBAT
Check route connection : VBAT
Check route connection : VCC_RFCHIP
TYP 2.8V
Power Supply Schematic
1
Checking Point