LG 55LF5950 Service Manual page 21

NVRAM
+3.3V_NORMAL
R101 R104 IC100 +3.3V_NORMAL
AT24C256C-SSHL-T
4.7K 4.7K
OPT
R100
A0 VCC
1 8
Write Protection
C112
4.7K
0.1uF
OPT A1 WP - Low : Normal Operation
2 7
- High : Write Protection
A2 SCL
R111
3 6
GND SDA
R112
4 5
NVRAM_ATMEL
+3.3V_NORMAL
R102 R107
R105
OPT
10K 10K 10K
OPT OPT
LED_PWM0
LED_PWM1
OPCTRL3
R106
R103 R108
10K
10K 10K
I2C
+3.3V_TUNER +3.3V_NORMAL
TU_M/W
TU_M/W
R109 R110 R113
1.8K 1.8K 3.3K
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
NVRAM_ROHM
IC100-*1
BR24G256FJ-3
A0 VCC
1 8
A1 WP X-TAL
2 7
X100
A2 SCL
3 6 24MHz
X-TAL_1 GND_2
GND SDA XTAL_IN
4 5 1 4
C100
GND_1 X-TAL_2
5pF
2 3
50V
33
I2C_SCL1
33
I2C_SDA1
STRAPPING LED_PWM0 LED_PWM1 OPCTRL3
ICE mode + 24M + serial boot 0 0 1
ICE moce + 24M + ROM to 60bit ECC Nand boot
0 1 0
ICE moce + 24M + ROM to eMMC boot from
eMMC pins(share pins w/s NAND) 0 0 0
I2C_1 : AMP, L/D, NVM, TCON
I2C_2 : TUNER
5V_HDMI_1
I2C_3 : MICOM
I2C_4 : S/Demod,T2/Demod, LNB
+3.3V_TUNER +3.3V_NORMAL
R114 R115 R116 R117 R118
3.3K 1.8K 1.8K 3.3K 3.3K
I2C_SCL1
I2C_SDA1
I2C_SCL2
I2C_SDA2
I2C_SCL3
PCM_5V_CTL
I2C_SDA3
L/DIM0_MOSI
I2C_SCL4
/TU_RESET2
I2C_SDA4
L/DIM0_SCLK
L/DIM0_VS
I2C_SDA1
I2C_SCL1
VDD3V3
XTAL_IN
XTAL_OUT XTAL_OUT
C101
5pF DVDD18_EMMC
50V
C108
0.1uF
Near SoC
C102
C109
1uF
0.1uF
10V
C107
0.1uF
C103
4.7uF
10V
USB_DP2
USB_DM2
USB_DP1
USB_DM1
WIFI_DP
WIFI_DM
VDD3V3
C106
1uF
10V
Near SoC
EB_ADDR[0]
EB_ADDR[1]
EB_ADDR[2]
EB_ADDR[3]
EB_ADDR[4]
EB_ADDR[5]
EB_ADDR[6]
EB_ADDR[7]
EB_ADDR[8]
EB_ADDR[9]
EB_ADDR[10]
EB_ADDR[11]
EB_ADDR[12]
EB_ADDR[13]
EB_ADDR[14]
TPO_DATA[0-7]
TPO_DATA[0]
TPO_DATA[1]
TPO_DATA[2]
TPO_DATA[3]
TPO_DATA[4]
TPO_DATA[5]
TPO_DATA[6]
TPO_DATA[7]
EB_DATA[0]
EB_DATA[1]
EB_DATA[2]
EB_DATA[3]
EB_DATA[4]
EB_DATA[5]
TPI_DATA[0-7]
EB_DATA[6]
EB_DATA[7]
TPI_DATA[0]
5V_HDMI_3
TPI_DATA[1]
TPI_DATA[2]
TPI_DATA[3]
TPI_DATA[4]
TPI_DATA[5]
TPI_DATA[6]
TPI_DATA[7]
5V_HDMI_1
+3.3V_NORMAL 5V_HDMI_3
R141
1K
R199
1K
NON_L/D NON_JP
NON_L/D NON_EU
OPCTRL3
I2C_SCL3
R122 R123 R124 R140 R138
NON_L/D
10K 10K 10K 10K 10K
I2C_SDA3
L/D
R121 33
L/D
R119 33
L/D
R120 33
I2C_SCL4
I2C_SDA4
/TU_RESET2
IC101
LGE5221(A5LRA0)
T25
SOC_TX
U0TX
T24
DEV U0RX SOC_RX
AE26
OSDA0
AH26 J2
EMMC_CMD
OSCL0 POWE__B
N7
POOE__B
M7
POCE1__B
B28 L7
XTALI POCE0__B
B27 P3
EMMC_DATA[7]
XTALO PDD7
N1
PDD6 EMMC_DATA[6]
J22 N2
AVDD33_REG_STB PDD5 EMMC_DATA[5]
N4
PDD4 EMMC_DATA[4]
J1 M3
VCC3IO_EMMC PDD3 EMMC_DATA[3]
L1
EMMC_DATA[2]
PDD2
H24 N6
AVDD33_RGB_STB PDD1
K21 P6
AVSS33_RGB PDD0
N5
PARB__B
J23 L3
EMMC_DATA[1]
AVDD33_PLL_STB PACLE
K3
PAALE EMMC_DATA[0]
U25 P4
EMMC_CLK
AVDD10_LDO EMMC_CLK
P7
EMMC_RST EMMC_RST
Y26 R26
AVDD10_ELDO OPWRSB
L25
C104 ORESETB
4.7uF
10V L26
OIRI
R125 4.7K
AH27
FSRC_WR
B12 AB27
USB_DP_P0 TXVP_0 EPHY_TDP
A12 AB26
EPHY_TDN
USB_DM_P0 TXVN_0
AC25
RXVP_1 EPHY_RDP
AC26
RXVN_1 EPHY_RDN
C13
USB_DP_P1
D13
USB_DM_P1
AA25
PHYLED1 MODEL_OPT_12
AA26
PHYLED0 MODEL_OPT_13
D14
USB_DP_P2
C14
USB_DM_P2
R126 24K
AB28
VDD3V3
REXT
AD28
USB_DP_P3
AD27 1%
USB_DM_P3
AB25
AVDD33_ETH
F23
AVDD33_USB
IC101
LGE5221(A5LRA0)
D2 E13
/TU_RESET1
CI_A0 DEMOD_RST
D1
CI_A1
C3 F13
FE_DEMOD1_TS_CLK
CI_A2 DEMOD_TSCLK
C1 F12
CI_A3 DEMOD_TSDATA0 FE_DEMOD1_TS_DATA[0]
C2 F11
FE_DEMOD1_TS_SYNC
CI_A4 DEMOD_TSSYNC
B1 G13
CI_A5 DEMOD_TSVAL FE_DEMOD1_TS_VAL
A1
CI_A6
A2 D10
CI_A7 CI_INT CI_REG#
C5 D12
CI_A8 CI_TSCLK CI_CE1#
B5 E11
TPI_SYNC
CI_A9 CI_TSDATA0
+3.3V_NORMAL
D6 F4
CI_A10 CI_TSSYNC CI_WE#
A5 E12
CI_OE#
CI_A11 CI_TSVAL
A3 B2
CI_A12 CI_RST CI_RESET R143
D5 E10
4.7K
TPI_VAL
CI_A13 PVR_TSCLK
E4 A11 OPT
CI_A14 PVR_TSVAL CI_VS1#
B4 F10
TPO_CLK TPI_CLK
CI_MCLKI PVR_TSSYNC
H5
B11
TPO_VAL CI_MIVAL PVR_TSDATA0 CI_IREQ#
D4 C9
TPO_SYNC CI_WAIT#
CI_MISTRT PVR_TSDATA1
D3
CI_MDI0
E5 G1
CI_MDI1 SPI_CLK1 CI_CD2#
F5 C11
CI_MDI2 SPI_CLK CI_CD1#
H6 D11
CI_MDI3 SPI_DATA CI_IORD#
H4 C10
CI_IOWR#
CI_MDI4 SPI_CLE
A4
CI_MDI5
B3
CI_MDI6
C4 AE25
CI_MDI7 OPWM2
E1 AG26
CI_D0 OPWM1
E2 AF26
CI_D1 OPWM0 AMP_RESET_N
G3
CI_D2
D9
DEV
CI_D3
B9 K4
CI_D4 SD_D0
B8 L5
CI_D5 SD_D1
B7 L4
CI_D6 SD_D2
D7 L6
CI_D7 SD_D3
E3 K5
CI_MDO0 SD_CMD
F3 H1
CI_MDO1 SD_CLK
G2
CI_MDO2
A9 H2
CI_MDO3 VCC3IO_SD
A8
CI_MDO4
A7 R22
LED_PWM0
CI_MDO5 LED_PWM0
C7 R24
CI_MDO6 LED_PWM1 LED_PWM1
C6
CI_MDO7
J6
GPIO42 FE_DEMOD1_TS_DATA[1]
J7
FE_DEMOD1_TS_DATA[2]
GPIO43
G11
GPIO44 FE_DEMOD1_TS_DATA[3]
P26 H11
OPCTRL0 GPIO45 FE_DEMOD1_TS_DATA[4]
P25 H12
OPCTRL1 GPIO46 FE_DEMOD1_TS_DATA[5]
P24 G12
TP107 OPCTRL2 GPIO47 FE_DEMOD1_TS_DATA[6]
N24
OPCTRL3
M24
OPCTRL4
M23 K24
OPCTRL5 ADIN0_SRV
M22 L24
OPCTRL6 ADIN1_SRV
AV1_CVBS_DET
K23 J24
OPCTRL7 ADIN2_SRV COMP1_DET
L23 E28
OPCTRL8 ADIN3_SRV
SC_DET
E20 F25
OPCTRL9 ADIN4_SRV /USB_OCD1
D20 F26
OPCTRL10 ADIN5_SRV
/USB_OCD2
G18 H25
OPCTRL11 ADIN6_SRV USB_CTL2
F18 H26
OPCTRL12 ADIN7_SRV
USB_CTL1
VDD3V3
R137
10K
OPT
SOC_RESET
22
R128
C105
0.1uF
16V
SC_ID_SOC TP149
TP139 EB_DATA[0]
TP150 EB_DATA[1]
SC_DET TP140
C110
PCM_5V_CTL TP141 EB_DATA[2]
TP148
0.1uF
EB_DATA[3]
TP142
TPO_DATA[0-7] TP199
TP143 EB_DATA[4]
TPI_DATA[0-7]
TP198 EB_DATA[5]
TP144
EB_ADDR[0]
TP115 TP137 EB_DATA[6]
EB_ADDR[1] TP116 EB_DATA[7]
TP138
EB_ADDR[2] TP117
CI_REG#
TP126
EB_ADDR[3] TP118
TP127 CI_CE1#
EB_ADDR[4] TP119
TP128 TPI_SYNC
EB_ADDR[5] TP120
TP129 CI_WE#
EB_ADDR[6] TP121
TP130 CI_OE#
EB_ADDR[7]
TP109
TP131 CI_RESET
EB_ADDR[8] TP110
TP132 TPI_VAL
EB_ADDR[9]
TP111
EB_ADDR[10] TP112
TP133 TPI_CLK
EB_ADDR[11]
TP113 CI_IREQ#
TP134
EB_ADDR[12] TP114
TP135 CI_WAIT#
EB_ADDR[13]
TP106
EB_ADDR[14] TP108
TP123 CI_CD2#
TPO_CLK TP147 CI_CD1#
TP124
TPO_VAL TP145
TP125 CI_IORD#
TPO_SYNC TP146 TP136 CI_IOWR#
+3.3V_NORMAL
R144
4.7K R130 R133
4.7K
OPT 4.7K
OPT
OPT
R136 PWM_DIM2
PWM_DIM2
22
PWM_DIM
22
R135
R131
R134
1K 1K
PWM2_PULL_DOWN_1K
PWM1_PULL_DOWN_1K SMARTCARD_DATA/SD_EMMC_CLK
TP100
SMARTCARD_VCC/SD_EMMC_CMD
TP101
SMARTCARD_DET/SD_EMMC_DATA[3]
TP102
SMARTCARD_RST/SD_EMMC_DATA[2]
TP103
SMARTCARD_PWR_SEL/SD_EMMC_DATA[1]
TP104
SMARTCARD_CLK/SD_EMMC_DATA[0]
TP105
SMARTCARD_CLK/SD_EMMC_DATA[0]
SMARTCARD_PWR_SEL/SD_EMMC_DATA[1]
SMARTCARD_RST/SD_EMMC_DATA[2]
SMARTCARD_DET/SD_EMMC_DATA[3]
VDD3V3
SMARTCARD_VCC/SD_EMMC_CMD
SMARTCARD_DATA/SD_EMMC_CLK
C111
0.1uF
SC_ID_SOC
NON_EU
R139
10K
A5LR_Bring_Up
2014.11.01
1
MAIN1
LGE Internal Use Only