LG PRADA KE850 - Page 76

5. Trouble shooting
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2V85_SIM
2.2u
C202
VBAT
VRF1V5
L201 10uH
0.1u
C214
VUPU
2V72_IO
C212
VBAT
22u
22K
R203
VRF2V65
VBAT
2V85_IO
VMMC
VBAT
VRF2V85 2V11_RTC
2.2u
C216
1V5_DSP
1V8_SDVBAT
22u
C213
R213
2V65_ANA
R216 4.7K
82K
2.2u
C201
C227
2.2u
C208
2.2u
C204
2.2u
R215 4.7K
C226
0.1u
VUSB
2.2u
C225
C209
2.2u
1V5_Core
C210
C207
2V72_IO
0.1u
C205
2.2u
2.2u
2.2u
C203
C228
USB_VBUS
2.2u
VSSAU
27
8
VSSFB
VSSPW
7
33
VSSR
10
VUPU
11
VUSB
VRF2V7
2.2u
C206
46
VDDC
VDDCH
43
5
VDDPW
VDDRF
39
13
VIB
21
VINT
VLBB1
45
VLBB2
47
20
VMMC
40
VRF1
38
VRF2 VRF3
37
3
VRFC
42
VRTC
VSIM1
18
VSIM2
19
ON
4
RESETQ
48
SCL
23 24
SDA SLED1
15
SLED2
14
SW
6
VANA
34
2
VBATS
VBUS
12
44
VCHC
VCHS
1
VCXOEN
36
35
VDDA
30
VDDAU
17
VDDB
PMB6812
AUIN
25
26
AUIP
28
AUON
AUOP
29
31
BYP
FB
9
49
GND
INTOUT
41
IREF
32
16
LED LRF3EN
22
U201
C223
2.2u
VCHG
FB201
2.2u
C215
C211
2.2u
VCHS
SPOWER_INT
BT_VCXO_EN
PMRSTn
SCL
SDA
SLED1
VCH_CTL
XO_ENE
PWRON
VBACKUP
ON
(PWRON)
Delay time
SM-P
LDOs
628 628 36.6 34.3 32.2 30.2 28.1 26.2 26.2 23.7 24.2 20 Delay
time(msec)
VRF1 VRFCVUSBVMMC VSIM2VSIM
1
VANA VINT VLBB
1
VLBB2 SW VRF2
LDO NAME
VRF2
V85
VRF1
V5
VUSB VMMC
2V85_
IO
2V85_
SIM
2V65_A
NA
2V72_
IO
1V5_
DSP
1V5
_
C
ORE
1V8
_
S
D
VRF2V
7
SM-POWER
LDOS