LG KF350 Service Manual page 65

4. TROUBLE SHOOTING
PMIC
USB_OEn
USB_DAT_VP
USB_SE0_VM
TXON_PA
1V8_SD 2V5_VAUDB VBAT
VBAT
2V5_VAUDA 2V9_VFM
B1
U_RCV RCV
C2
U_PMIN VPIN
D3
U_VMIN VMIN
C1
USB_DP D+
D2
USB_DM D-
PMRSTn
E3
PMRSTn RESET_N
D1
RESET2_N
E2
VCXO_EN SLEEP1_N
E1
BT_VCXO_EN SLEEP2_N
F2
VAUDIOA
F1
VDDAUDIOA
G2
VDDAUDIOB
G1
VAUDIOB
H2
VAUX
H1
VDDAUX
C223 C224 C225
J1
2.2u 2.2u 1u SU1_GATE
J2
SU1_GND
H3
SU1_FB
J3
SU1_ISENSE
K1
VDDSD2
K2
SD2_FB
L2
SD2_FBL
C233
C234 C235 0.1u 10u C236 C237 C238
22u 2.2u C231 2.2u 0.1u 2.2u
LDO Net name
SD1 1V35_Core
SD2 1V8 _SD
VAUX 2V9_VAF
VIO 2V62_VIO
VSIM 2V9_SIM
VMME 2V8_VMME
VUMTS 2V85_AMP
VUSB VUSB
VLED VLED
VAUDIOa 2V5_VAUDA
VAUDIOb 2V5_VAUDB
VRF1 2V8 5_VRF
VRF2 1V5 _VRF
VRF3 2V6 5_VBT
VPLL 1V3 5_VPLL
VRTC 2V11_RTC
VAFC VAFC
VVIB 2V8 _VLCD
LGE Internal Use Only
R201
RTC_OUT
VUSB
27K
VBAT VBAT
R202
DNI
1V35_VPLL
C203 C201
0.1u
2.2u
VBAT 2V62_VIO VBAT
TP201
U202
PMB6821
Output Voltage Output Current
1.35V 600mA
1.8V 300mA
2.9V 100mA
2.62V 100mA
2.9V 70mA
2.9V 150mA
2.85V 110mA
3.1V 40mA
2.9V 10mA
2.5V 200mA
2.5V 50mA
2.85V 150mA
1,53V 100mA
2.7V 150mA
1.35V 30mA
2.11V 4mA
2.65V 5mA
2.8V 140mA
- 66 -
ON_OFF2
KDR331V
OVP_VCHG
2V62_VIO 2
3
C202 OVP_VUSB
1
2.2u
D201
VBAT
VBAT
C205
1u
10uH
L201
C11
VMME
C10
VDDMME
D10
VDDRF2
D11
VRF2
E10
VRF3
E11
VDDRF13_AFC
F10
VRF1
F11
VVIB
G11
VDDSIMVIB
G10
VSIM
H11
VAFC
H10
VRTC
H9
VDDUMTS
J11
VUMTS
FB202
K11
VDDSD1
J10
SD1_FB
L10
SD1_FBL
10u C239
C232 2.2u
Usage
Core & for LDO
Memory
Cam Auto Focus
Peripherals
SIM card
u-SD
Headset AMP
Not used
Not used
Stereo headset, Mono earpiece
Analog parts of S-Gold
2.85 V supply for SMARTi-PM
RF transceiver
1.5 V supply for SMARTi-PM
RF transceiver
Bluetooth
S-GOLD3 PLL
Real Time Clock
Not used
LCD
Copyright © 2008 LG Electronics. Inc. All right reserved.
1V35_CORE 2V8_CAM_A 2V85_VRF 1V5_VRF 2V9_VMME
VBAT 2V85_CAM 2V11_RTC 2V9_SIM 2V65_VBT 1V8_SD
C240 C241 C242 C243 C244 C245 C246 C247
1u 1u 1u 2.2u 2.2u 2.2u 2.2u 2.2u
Only for training and service purposes
C248
2.2u