LG Prada KE850 Service Manual page 76

VRF1V5
2.2u
C206
VBAT 1V8_SD
FB201
VCHS
PWRON
L201 10uH
C212 C213
22u 22u
VUPU
C214
0.1u
SM-POWER 1V8_S
VRF2V
LDOS 7 D
LDO NAME VRF2 SW
Delay 20 24.2
time(msec)
VCH_CTL
VBAT 1V5_Core 1V5_DSP
2.2u 2.2u
C204 C205
1
VCHS
2
VBATS
3
VRFC
4
ON
5
VDDPW
6
SW
7
VSSPW
8
VSSFB
9
FB
10
VUPU
11
VUSB
12
VBUS
VUSB USB_VBUS
C215 C216
2.2u 2.2u
VBAT
C226
0.1u
ON
(PWRON)
SM-P
LDOs
1V5_C 1V5_ 2V72_ 2V65_A
ORE DSP IO
VLBB2 VLBB VINT
1
23.7 26.2 26.2
- 77 -
5. Trouble shooting
VCHG
VBAT VRF2V85 2V11_RTC
C201
2.2u
2.2u 2.2u
C202 C203
VRF2V7
2.2u
C207
36
VCXOEN
35
VDDA
34
VANA
33
VSSR
32 R213 82K
U201
IREF
31
BYP
30 C210
PMB6812
VDDAU
29
AUOP
28
AUON
27
VSSAU
26
AUIP
25
AUIN
2V72_IO
R215 4.7K
R216 4.7K
2V72_IO
VMMC
2V85_IO
C225
2.2u
C227
2V85_SIM
2.2u
C228
2.2u
Delay time
2V85_ 2V85_
VMMC
NA SIM IO
VANA VSIM VSIM2 VMMC
1
28.1 30.2 32.2 34.3
R203
VBACKUP
22K
VRF2V65
2V65_ANA
2.2u
C208 2.2u
C209
VBAT
XO_ENE
C211
2.2u
0.1u
C223
2.2u
VRF1 VRF2
VUSB
V5 V85
VUSB VRFC VRF1
36.6 628 628