LG GX500 - Power on Trouble

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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
GX500 Operational Description Revision A
LG Electronics 75/143 LGE Property
4.2 Power on Trouble
Check Points
-Battery Voltage( Need to over 3.35V)
-Power-On Key detection (PWRON signal)
-Outputs of LDOs from PMIC
Figure 4-1. Remote Power On Circuit
Figure 4-2. PMIC Circuit
TP1
I
ND
402R
I
ND
112R
K2
302R
R209
10K
312R
K001
Q201
321
456
2V11_RTC
VA204
KEY_COL2
RPWRON_EN
END_KEY
PWRO
N
RPWRON
KEY_ROW4
Remote Power On
u01102C
2.2u
C203
220
102BF
K7.450
2
R
2V11_RTC
IND
602R
K7.4702R
10u
C204
2V9_VMME
K7.4802R
1V35_CORE
0.1u
C205
702Cu1
C208
10u
C209
2.2u
102L
u01
C210
2.2u
C213
22u
0.1u
C214
VBAT
1u
C212
2V85_VRF
1V8_SD2V85_VFM
1V35_VPLL
2V62_VIO
2V5_VAUDA
2.2u
C216
2.2u
C217
2V9_SIM
u01812C
2V8_VVIB
VBAT
VBAT
VBAT
212R
K001
u1 122C
222Cu2.2
322Cu2.2
2V65_VBT
VBAT
C224
0.1u
1u
C244
TP202
C226
10u
1u
C227 C228
2.2u
C229
2.2u
C230
2.2u
10u
L202
VBAT
2.2u
C232
TP203
2.2u
C233
102D
VBAT
2V5_VAUDB
202D
1u
C234
FB202
022
U201
4H 8H 9D
6J
7H 6H 5H
9G
8G 7G 6G
5
G
4G 3
G
9F
8
F
7F 6
F
5F
4
F
3F 9E 8E
7E
6E 5E 4E
8D
7D 6D 5D
4D
6C
L2
L10K2
J10K1
K11
J3
J11H3
H9J2
J1
H10
H1
H11H2
G10G1
G2
G11
F11F1
F10F2
E11E1
E10E2
D1
D11E3
D10
D2
C10C1
C11D3
C2
B1
11L
8A 9J
01K
9L
9K 8L 8K
7L
8J 7K
6L
7J 6K
5K
5J 5L
4L
4K 3L 3K
4J
1A 4B
11B
1L
11A
9B
01A 01B
9C 9A 8C
8B
6A 7C 7A
5A
7B 5C 6B 5B 4A 4C 3A
3B
3C 2A 2B
MV_
0ES
PV_TAD
-
CA
+CA
DNEPSUS N_EO
BSUV BSU_DDV
PNI_ONOM
N
N
I_O
N
OM
O
NOM_
D
DV
M_XEFERV
PTUO_ONOM
ONO
M
_SSV
N
T
UO_
O
NOM
FE
R
R
FE
RV
KNIHS_HSALF
NO_
HSA
L
F
AP
N
OXT
LLPV
OILLPDDV OIV
2DSV 3SMUP 2SMUP
1SMUP
TROPTUO
NO_REWOP
GODW
1FFO_NO 2FFO_NO
TUO_FFO_NO
LTRC_ECRUOSER
TNI_C2I TAD_C2I
KLC_C2I
MWP_1LB MWP_2LB
MWP_3LB
LRTNC_HC
ECRUOS_HC
CU_EGRAHC
EGRAHC_DDV
1NI_ESNES 2NI_ESNES
FER_DDV
DELV
1DSV
RCV
VPIN
VMIN VMME
D+ VDDMME
D-
VDDRF2
RESET_N VRF2
RESET2_N
SLEEP1_N VRF3
SLEEP2_N VDDRF13_AFC
VAUDIOA VRF1
VDDAUDIOA VVIB
VDDSIMVIB
VDDAUDIOB
VAUDIOB VSIM
VAUX VAFC
VDDAUX
VRTC
SU1_GATE
SU1_GND VDDUMTS
SU1_FB VUMTS
SU1_ISENSE
VDDSD1
VDDSD2 SD1_FB
SD2_FB SD1_FBL
SD2_FBL
1SSV 2SSV 3SSV
4SSV
5SSV 6SSV
7SSV 8SSV
9SSV
01SSV
1
1SSV
2
1SSV
31SSV 41SSV
5
1SSV
6
1SSV
71SSV
81SSV 9
1SSV
02SSV 12SSV 22SSV 32SSV
42SSV
52SSV 62SSV
72SSV
82SSV 92SSV 03SSV
FERV_SSV
1DS_SSV 2DS_SSV
C236
1u
2.2u
C237
1V5_VRF
R216
27K
u01832C
1V8_SD
K0
01
712R
0.1u
C240
2V62_VIO
2V7_VRF
2.2u
C242
K2.2812R
1u
C243
100u
C206
K2.2912R
2.2u
C247
2.2u
C245
642Cu1.0
1V5_VBT
VBAT
VUSB
10u
C241
LRTC_ECRUOSER
USB_DAT_VP
RTC_OUT
TXON_PA
VCXO_EN
USB_OEN
GODW
USB_SE0_VM
SIM1_BT_VCXO_EN
NORWP
2FFO_NO
ON_OFF2
SIM1_USB_DM
SIM1_USB_DP
PMRSTN
TNI_REWOPS
SG3_RPWRON_EN
LCS_1C2I
ADS_1C2I
PMIC
TP1