Only For Training And Service Purposes - LG KF510C Service Manual

TP3
USB_OEn
USB_DAT_VP
USB_SE0_VM
R210 0
TXON_PA
1V8_SD 2V5_VAUDB VBAT
VBAT
2V5_VAUDA 2V85_VFM
B1
U_RCV
C2
U_PMIN
D3
U_VMIN
C1
USB_DP
D2
USB_DM
PMRSTn
E3
PMRSTn
D1
E2
VCXO_EN
E1
BT_VCXO_EN
F2
F1
G2
G1
H2
H1
C225 C226 C227
J1
2.2u 2.2u 1u
J2
H3
J3
K1
K2
L2
C233
C234 C235 0.1u 10u C236 C237 C238
22u 2.2u C231 2.2u 0.1u 2.2u
C492 C491
10u 10u
1V5_VBT
2V11_RTC
2V7_VRF
2V9_SIM
2V8_CAM _A
TP3
2V85_VRF
2V65_VBT
1V5_VRF
1V8_SD
2V9_VMME
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

VUSB
VBAT VBAT
1V35_VPLL
C204 C200
0.1u
2.2u
VBAT 2V62_VIO
RCV
VPIN
VMIN
D+
D-
RESET_N
RESET2_N
SLEEP1_N
SLEEP2_N
VAUDIOA
U201
VDDAUDIOA
U201
PMB6821
VDDAUDIOB
VAUDIOB
VAUX
VDDAUX
SU1_GATE
SU1_GND
SU1_FB
SU1_ISENSE
VDDSD2
SD2_FB
SD2_FBL
U201
2V62_VIO
1V35_VPLL
All Port on U201 have to output proper voltage level.
All outputs on U201 have to
VCHG_VUSB
operate properly.
2V62_VIO
C201
2.2u
Check TP3.
VBAT
VBAT
VBAT
C206
100u
TP200
10uH
L200
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
K11
VDDSD1
J10
SD1_FB
L10
SD1_FBL
10u
C232
1V8_SD
2V85_VFM
2V5_VAUD
- 77 -
5. Trouble shooting
R200
RTC_OUT ON_OFF2
27K
R201
DNI
TP3
1V35_CORE 2V8_CAM_A 2V7_VRF 2V85_VRF 1V5_VRF
VBAT 1V5_VBT 2V11_RTC 2V9_SIM 2V65_VBT 1V8_SD
FB201
C239 C240 C241 C242 C243 C244 C245 C246 C247 C248
2.2u 1u 1u 1u 2.2u 2.2u 2.2u 2.2u 2.2u 2.2u
TP3
LGE Internal Use Only
2V9_VMME
C249
2.2u