LG M6100 Service Manual - Page 70
Power On Trouble
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4. TROUBLE SHOOTING 4.3 Power On Trouble TEST POINT VUSB VCXO VEXT VMIC VABB VMIC VSIM VRTC VMEM VCORE CIRCUIT Figure 4-3 1V8_VCORE 2V8_VMEM 1V8_VRTC 2V85_VSIM 2V75_VABB 2V5_VMIC 2V75_VVCXO VUSB 2V8_VEXT VBAT P1 VCORE1 VCORE2 N1 VMEM1 T3 T2 VMEM2 VRTC T7 VSIM T6 H16 VABB VMIC N16 VVCXO D16 E15 VUSB VEXT1 A4 VEXT2 B4 T4 VBACK VAPPGATE E16 VAPP F16 R101 10K C115 1u NBL414-F9DE(SBCL0001303) VBACKUP C116 1u C117 C118 C119 C120 C121 C124 C125 0.1u 1u 2.2u(1608) 1u 1u 1u 1u - 71 -
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4. TROUBLE SHOOTING
- 71 -
Figure 4-3
4.3 Power On Trouble
VABB
VMIC
VEXT
VCXO
VUSB
VMEM
VRTC
VSIM
VCORE
VMIC
NBL414-F9DE(SBCL0001303)
(1608)
1V8_VCORE
C125
1u
1u
C116
2V85_VSIM
2V8_VEXT
1u
C115
E15
VUSB
VVCXO
D16
VCORE1
P1
N1
VCORE2
VEXT1
A4
B4
VEXT2
T3
VMEM1
VMEM2
T2
VMIC
N16
VRTC
T7
VSIM
T6
H16
VABB
VAPP
F16
E16
VAPPGATE
T4
VBACK
2.2u
C119
10K
R101
C121
1u
0.1u
C117
1u
VUSB
C124
1V8_VRTC
2V75_VVCXO
2V5_VMIC
VBAT
C120
1u
2V8_VMEM
2V75_VABB
1u
C118
VBACKUP
TEST POINT
CIRCUIT