Circuit Diagram - LG U8290 Service Manual

8. CIRCUIT DIAGRAM

< USB 48M CLK >
27p C142
USB_XTAL_IN
FA-238
X100
48MHz
27p C141
USB_XTAL_OUT
SDRAM_ADDR(0:14)
SDRAM_DATA(0:31)
SDRAM_DATA(31) T8
SDRAM1_D[31]
SDRAM_DATA(30) T6
SDRAM1_D[30]
SDRAM_DATA(29) T4
SDRAM1_D[29]
SDRAM_DATA(28) R8
SDRAM1_D[28]
SDRAM_DATA(27) T2
SDRAM1_D[27]
SDRAM_DATA(26) T1
SDRAM1_D[26]
SDRAM_DATA(25) R6
SDRAM1_D[25]
SDRAM_DATA(24) R4
SDRAM1_D[24]
SDRAM_DATA(23) W4
SDRAM1_D[23]
SDRAM_DATA(22) V6
SDRAM1_D[22]
SDRAM_DATA(21) Y2
SDRAM1_D[21]
SDRAM_DATA(20) Y1
SDRAM1_D[20]
SDRAM_DATA(19) W2
SDRAM1_D[19]
SDRAM_DATA(18) W1
SDRAM1_D[18]
SDRAM_DATA(17) V4
SDRAM1_D[17]
SDRAM_DATA(16) U6
SDRAM1_D[16]
SDRAM_DATA(15) L6
SDRAM1_D[15]
SDRAM_DATA(14) L8
SDRAM1_D[14]
SDRAM_DATA(13) K4
SDRAM1_D[13]
SDRAM_DATA(12) J1
SDRAM1_D[12]
SDRAM_DATA(11) K6
SDRAM1_D[11]
SDRAM_DATA(10) J2
SDRAM1_D[10]
SDRAM_DATA(9) J4
SDRAM1_D[9]
SDRAM_DATA(8) H1
SDRAM1_D[8]
SDRAM_DATA(7) H4
SDRAM1_D[7]
SDRAM_DATA(6) G2
SDRAM1_D[6]
SDRAM_DATA(5)
J6
SDRAM1_D[5]
SDRAM_DATA(4) J8
SDRAM1_D[4]
SDRAM_DATA(3) H6
SDRAM1_D[3]
SDRAM_DATA(2) G4
SDRAM1_D[2]
SDRAM_DATA(1) E1
SDRAM1_D[1]
SDRAM_DATA(0) F4
SDRAM1_D[0]
AA14
SUB_LCD_CS_N XMEM2_CS_N[1]
AF14
MAIN_LCD_CS_N LCD2_CS_N_GPIO[38]
AE4
NAND_CLE NAND2_CLE_UB2_N
W14
NAND_CS_N NAND2_CS_N_XMEM2_CS_N[0]
AF7
EBI2_OE_N OE2_N_NAND2_RE_N
AF4
EBI2_WE_N
WE2_N
AC5
NAND_ALE
LB2_N_NAND2_ALE_A2[0]
AE16
EBI2_DATA(0:15) NAND_READY
NAND2_FLASH_READY_GPIO[33]
EBI2_DATA(15) AC9
EBI2_DATA[15]
EBI2_DATA(14) AF8
EBI2_DATA[14]
EBI2_DATA(13) AE8
EBI2_DATA[13]
EBI2_DATA(12) AC8
EBI2_DATA[12]
EBI2_DATA(11) AE7
EBI2_DATA[11]
EBI2_DATA(10) AA9
EBI2_DATA[10]
EBI2_DATA(9) W9
EBI2_DATA[9]
EBI2_DATA(8) AA8
EBI2_DATA[8]
EBI2_DATA(7) AC7
EBI2_DATA[7]
EBI2_DATA(6) AF5
EBI2_DATA[6]
EBI2_DATA(5) AC6
EBI2_DATA[5]
EBI2_DATA(4) AE5
EBI2_DATA[4]
EBI2_DATA(3) AA7
EBI2_DATA[3]
EBI2_DATA(2) AF3
EBI2_DATA[2]
EBI2_DATA(1) AD1
EBI2_DATA[1]
EBI2_DATA(0) AB4
EBI2_DATA[0]
AA15
LCD_ADS EBI2_ADD[20]_GPIO[34]
AC13
EBI2_ADD[19]
AF13
EBI2_ADD[18]
AE13
EBI2_ADD[17]
AA13
EBI2_ADD[16]
W13
EBI2_ADD[15]
T13
EBI2_ADD[14]
AC12
EBI2_ADD[13]
AA12
EBI2_ADD[12]
AF11
EBI2_ADD[11]
AE11
EBI2_ADD[10]
W12
EBI2_ADD[9]
AC11
EBI2_ADD[8]
AA11
EBI2_ADD[7]
W11
EBI2_ADD[6]
AC10
EBI2_ADD[5]
AF9
EBI2_ADD[4]
AA10
EBI2_ADD[3]
AE9
EBI2_ADD[2]
W10
EBI2_ADD[1]
FB502 FB503
39p 39p
C621 C622
MICOUTP
MICOUTN
Near to MSM
H25
SBCK1_GPIO[0]
G26
SBDT1_GPIO[1] LCD_MAKER_ID
A19
PA_ON[1]_GPIO[2]
D5
ANT_SEL3_N_GPIO[12]
H21
GP_MN_GPIO[13] IrDA_EN
A5
GPS_TCXO_GPIO[28]
N23
USB_RX_DATA_GPIO[29] LCD_RESET_N
AC15
MMC_CD
XMEM2_CS_N[2]_GPIO[35]
AF16
XMEM2_CS_N[3]_GPIO[36]
T14
LCD2_EN_GPIO[37] EAR_SENSE*
H9
ETM_PIPESTAT1B_GPIO[43]
D18
ETM_TRACESYNC_GPIO[65] IrDA_SD
F8
BACKLIGHT_ETM_TRACECLK_GPIO[66]
AB1
XMEM1_CS_N[1]_GPIO[76]
Y6
SDRAM1_CS_N[1]_XMEM1_CS_N[3]_GPIO[77] HF_N
L25
UART3_RFR_N_GPIO[87] LCD_IF_MODE
C1
UART2_DP_RX_DATA_USIM_PWR_EN_GPIO[89]
F19
LCD_BACK_EN
GP_PDM[0]_GPIO[92]
H18
LOUD_SPK_EN
SBST1_GPIO[93]
L14
TX_AGC_ADJ
H14
TRK_LO_ADJ
F18
TCXO_EN_GPIO[94] TCXO_EN
B19
PA_ON[0]
A13
Q_OUT_N TX_QM
B13
TX_QP
Q_OUT
A14
TX_IM
I_OUT_N
B14
I_OUT TX_IP
U21
Q_IM_CH1(Reserved)
U23
Q_IP_CH1(Reserved)
V25
I_IM_CH1(Reserved) R106
W26
U100-1 I_IP_CH1(Reserved) 5.62K
Y25
Q_IM_CH0
Y26
Q_IP_CH0
V21
MSM6250_A
I_IM_CH0
W21
I_IP_CH0
5.62K
R107
A20
PA_RANGE[1]_GP_PDM[2]
H17
PA_RANGE[0]_GP_PDM[1]
H15
TRST_N
D16
TCK
F15
TMS
D15
TDI
F16
TDO
H16
RTCK
J25
GRFC[14]_GPIO[83]
K23
GRFC[13]_GPIO[82]
J26
GRFC[12]_GPIO[81] M_CAM_EN
K19
GRFC[11]_GPIO[80] FOLDER_DETECT
H12
RF_ON_TX_ON
GRFC[10]_TX_ON
B4
ANT_SEL2_N_GPIO[11] ANT_SEL2
T23
ANT_SEL1_N_GPIO[10] ANT_SEL1
R19
ANT_SEL0_N_GPIO[9] ANT_SEL0
D11
TX_VCO_0_EN_N_GPIO[8]
H10
TX_VCO_1_EN_N_GPIO[7]
F10
UHF_BAND_SEL_GPIO[6]
D9
GSM_PA_BAND_GPIO[5]
A8
GSM_PA_EN_GPIO[4]
B8
UHF_VCO_0_EN_GPIO[3]
G23
BT_CLK_GPIO[25] BT_CLK
F23
BT_SBST_GPIO[24] BT_SBST
E26
BT_SBCK_GPIO[23] BT_SBCK
E25
BT_SBDT_GPIO[22] BT_SBDT
G21
BT_TX_RN_N_GPIO[21] BT_TX_RX_N
D26
BT_DATA_GPIO[20] BT_DATA
- 195 -
MICFBP
MICINN
180K
C108 0.1u C100 0.1u R101
C101 0.015u
470K
R100
C106 0.015u
180K
C107 0.1u C105 0.1u
R104
MICINP
MICFBN
A1
NC
A2
NC
A25
NC
A26
ON_SW_N_MSM NC
B1
NC
B2
NC
B3
NC
B24
NC
B25
NC
B26
NC
C2
TX_AGC_ADJ NC
1K R115
C25
TRK_LO_ADJ NC
2K R113 D4
NC
C148 C143 D23
PA_ON NC
F6
NC
0.01u 0.033u F21
NC
H8
NC
H19
NC
K10
NC
L11
NC
L12
NC
L16
NC
L15
NC
M11
NC
M12
RX_QM NC
M13
RX_QP
NC
M14
RX_IM VREG_RFTX_2.85V
NC
M15
RX_IP
NC
M16
NC
N12
NC
N13
NC
N14
PA_R0 NC
N15
NC
P12
JTAG_TRST_N NC
P13
JTAG_TCK
NC
JTAG_TMS
JTAG_TDI
JTAG_TDO
JTAG_RTCK
VREG_MSMP_2.6V
GSM_TX_VCO_0_EN_N
GSM_TX_VCO_1_EN_N
GSM_PA_BAND
GSM_PA_EN
UHF_VCO_EN
2012
2012
DAC_REF
P14
NC
P15
NC
R11
NC
R12
NC
R13
NC
R14
NC
R15
NC
R16
NC
T11
NC
T12
NC
T15
NC
T16
NC
U25
U100-2 NC
W8
NC
W19
NC
AA6
NC
AA21
MSM6250_B
NC
AA25
NC MODE_1
AC4
NC
AC23
NC
AD2
NC
AD25
NC
AE1
NC
AE2
NC
AE3
NC
AE17
WDOG_EN
NC
AE21
VREG_MSMP_2.6V
NC
AE24
NC
AE25
NC
AE26
NC
AF1
NC
AF2
NC
AF25
NC
AF26
NC