LG 42LY750H Service Manual page 26

EAX6430790* : LD22* / LC22*
EAX6443420* : LT22* / LJ22* / LA22* / LB22*
LY750H-ZA / EAX65743101
Chassis : LD4FC
Write Protection
NVRAM
- Low : Normal Operation
+3.5V_ST
- High : Write Protection
+3.5V_ST
NVRAM_ST
IC104
R103 C102
M24M01-HRMN6TP
4.7K 0.1uF
MTK12
R104 NC VCC
0 1 8
M14
E1 WP
2 7
R105 0 E2 SCL R136 33
3 6
M14
VSS SDA
R137 33
4 5
HDCP EEPROM
+3.3V_NORMAL
HDCP_EEPROM_ST
IC100
M24C16-R
C101
0.1uF
16V
NC_1 VCC
1 8
NC_2 WC R181 4.7K
2 7
NC_3 SCL
R191 22
3 6
I2C_SCL1
VSS SDA R192 22
4 5
I2C_SDA1
I2C
R128 R131 R134 R139 R142 R173
1.2K 1.2K 2.7K 2.7K 2.7K 2.7K
R110 33
STB_SCL
R111 33
STB_SDA
R112 33
OPCTRL_11_SCL
R113 33
OPCTRL_10_SDA
R114 33
OSCL1
R115 33
OSDA1
R116 33
OSCL2
R117 33
OSDA2
R118 33
OSCL0
R121 33
OSDA0
R122 33
OPCTRL_1_SCL
OPCTRL_0_SDA R123 33
+3.3V_NORMAL Model Option
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 © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Close to eMMC Flash
(IC8100)
NVRAM_ATMEL
IC104-*1
AT24CM01-SSHM-T
NC VCC
1 8 EMMC_CLK
A1 WP
2 7
R174
A2 SCL
3 6 10K
GND SDA
4 5
SCL_NVRAM
SDA_NVRAM
Boot Option
HDCP_EEPROM_MICRO
IC100-*1
24LC16B
A0 8 VCC
1
+3.3V_NORMAL
A1 7 WP
2
A2 6 SCL
3
VSS 5 SDA
4
R147 R153
R150
1K 1K
1K
OPT
OPT
LED_PWM0
LED_PWM1
OPCTRL3
R151
R148 R154
1K
1K 1K
OPT
I2C_1 : AMP,HDCP KEY
I2C_2 : EYE_Q
I2C_3 : Pro:Idiom
I2C_4 : OPT(S/Demod,T2/Demod,LNB)
I2C_5 : NVRAM
Pro:Idiom/CI CLK S/W
+3.3V_NORMAL
I2C_6 : TUNER_MOPLL(T/C,ATV)
- TCLK_SEL HIGH : Pro:Idiom(Default)
- TCLK_SEL LOW : CI
I2C_SCL4
I2C_SDA4
R185 R188
R156 R160
R164 R177
2.7K 2.7K
2.7K 2.7K
2.7K 2.7K
TS_S_OUT_CLK
I2C_SCL1
I2C_SDA1
I2C_SCL2
I2C_SDA2
I2C_SCL3
MT5369_MCLKI
I2C_SDA3
I2C_SCL4
I2C_SDA4
I2C_SCL5
I2C_SDA5
I2C_SCL6
I2C_SDA6
SoC
NO_FRC internal
FRC
MODEL_OPT_0
0 0
MODEL_OPT_1
0 1
MODEL_OPT_0
MODEL_OPT_1
HIGH
MODEL_OPT_2
MODEL_OPT_2 FHD
MODEL_OPT_3
MODEL_OPT_3 OPTIC
/S2_RESET
MODEL_OPT_4
MODEL_OPT_4 3D DEPTH 3D_Depth_IC
MODEL_OPT_5
DDR DDR_768MB
MODEL_OPT_5
MODEL_OPT_6
MODEL_OPT_6 CP BOX Enable
MODEL_OPT_7
MODEL_OPT_8 MODEL_OPT_7
T2 Tuner Support
MODEL_OPT_9
MODEL_OPT_8
S Tuner Support
MODEL_OPT_10
MODEL_OPT_9 Reserved
MODEL_OPT_10
EPI Support
MODEL OPTION 8 is just for CP Box
It should not be appiled at MP
X-TAL(27Mhz)
X100
27MHz
X-TAL_1 GND_2
MT5369_XTAL_IN 1 4
C113
GND_1 X-TAL_2
2.7pF
2 3 MT5369_XTAL_OUT
50V C115
2.7pF
50V
STRAPPING LED_PWM0 LED_PWM1 OPCTRL3
ICE mode + 27M + Serial boot 0 0 0
ICE mode + 27M + ROM to Nand boot 0 0 1
ICE mode + 27M + Rom to eMMC boot 0 1 0
from eMMC pins (share pins w/s NAND)
ICE mode + 27M + ROM to eMMC boot 0 1 1
from SDIO pins
MT5369_MCLKI_SW
TS_S_OUT_VAL
TS_S_OUT_SYNC
TS_S_OUT_DATA
+3.3V_NORMAL
R1028
IC106
10K
NLASB3157DFT2G
MT5369_MIVAL_ERR
TCLK_SEL
MT5369_MISTRT
R1027 B1 SELECT
+3.3V_NORMAL
MT5369_TS_OUT[0-7]
1 6
22
GND VCC
2 5
C121
0.1uF
B0 A
3 4
MT5369_MCLKI_SW
CI_DATA[0-7]
MT5369_RM
IC105-*1
LGE2112-AL
AC1 C19
DDRV_44 ARDQM0
AC2 C21
DDRV_45 ARDQS0
A3 B21
DDRV_1 ARDQS0
A4 C23
DDRV_2 ARDQ0
B4 B17
DDRV_5 ARDQ1
C4 D23
DDRV_8 ARDQ2
D4 C17
LG FRC2 Reserved DDRV_10 ARDQ3
B3 D24
DDRV_4 ARDQ4
C3 C16
DDRV_7 ARDQ5
AC3 C24
DDRV_46 ARDQ6
AC4 D15
1 1 DDRV_47 ARDQ7
G10 D21
MEMTP ARDQM1
0 1 G9 B20
MEMTN ARDQS1
C20
ARDQS1
G13 A17
RVREF_B ARDQ8
G21 A23
RVREF_A ARDQ9
D17
ARDQ10
B23
ARDQ11
F10 D20
ARCKE ARDQ12
D22
LOW
ARDQ13
D9 D19
ARCLK1 ARDQ14
C9 C22
ARCLK1 ARDQ15
HD A20 A7
A21 ARCLK0 ARDQM2 B9
ARCLK0 ARDQS2
A9
NON_OPTIC ARDQS2
E18 C12
ARODT ARDQ16
F17 D6
ARRAS ARDQ17
E17 B12
NON_3D_Depth_IC ARCAS ARDQ18
E16 C5
ARCS ARDQ19
D14 C13
ARWE ARDQ20
A5
DDR_Default ARDQ21
B14 A12
ARRESET ARDQ22
B5
ARDQ23
A13
Disable ARBA0
G11 E10
ARBA1 ARDQM3
D16 C8
ARBA2 ARDQS3 D8
ARDQS3
Not Support F18 C6
ARCSX ARDQ24
D10
ARDQ25
C15 D7
ARA14 ARDQ26
A15 C11
Not Support
ARA13 ARDQ27
F13 C7
ARA12 ARDQ28
C14 C10
ARA11 ARDQ29
F11 B7
ARA10 ARDQ30
E15 B10
Default
ARA9 ARDQ31
D13
ARA8
B15
ARA7
E14 N14
Not Support ARA6 AVDD33_MEMPLL
F16 N15
E13 ARA5 AVSS33_MEMPLL
ARA4
B13
ARA3
A14 R1
ARA2 DVSS_50
F14 P21
ARA1 DVSS_48
F15
ARA0
+3.3V_NORMAL
MT5369_NON_RM
IC105
LGE2112
AP14
JTCK
AM14
JTDI
AR14
JTDO
AR15
JTMS
R144 10K AN14
JTRST
AP12
OSDA0 OSDA0
AN12
OSCL0
OSCL0
AP15
OSDA1
OSDA1
AN15
OSCL1 OSCL1
AT34
MT5369_XTAL_IN XTALI
AU34
MT5369_XTAL_OUT XTALO
AVDD_33SB
AK27
AVDD33_XTAL_STB
AH26
C116
AVSS33_XTAL_STB
0.1uF
AVDD_33SB
AK18
AVDD33_VGA_STB
C117 AK17
AVSS33_VGA_STB
0.1uF
VDD3V3
AK23
AVDD33_PLLGP
C118 AM27
AVSS33_PLLGP
0.1uF
AJ20
AVDD10_LDO
C107
C108
2.2uF
2.2uF
10V 10V
CI_ADDR[0-14]
Place Close to MTK5369(IC105)
CI_ADDR[0]
H32
GPIO0
CI_ADDR[1] F37
R1021
22 GPIO1
CI_ADDR[2] F36
R1034 22 GPIO2
CI_ADDR[3] G37
R1035 GPIO3
22
CI_ADDR[4] G36
R1036 22 GPIO4
CI_ADDR[5] G35
GPIO5
CI_ADDR[6] G34
GPIO6
CI_ADDR[7] H34
GPIO7
CI_ADDR[8] L34
GPIO8
CI_ADDR[9] L32
GPIO9
CI_ADDR[10] K33
GPIO10
CI_ADDR[11] K32
GPIO11
CI_ADDR[12] H33
GPIO12
CI_ADDR[13] L35
GPIO13
CI_ADDR[14] K36
GPIO14
J32
GPIO15
J34
GPIO16
K34
GPIO17
MT5369_TS_OUT[0] K35
GPIO18
MT5369_TS_OUT[1] K37
GPIO19
MT5369_TS_OUT[2] J36
GPIO20
MT5369_TS_OUT[3] J37
GPIO21
MT5369_TS_OUT[4] J35
GPIO22
MT5369_TS_OUT[5] J33
GPIO23
MT5369_TS_OUT[6] G33
GPIO24
MT5369_TS_OUT[7] H35
GPIO25
CI_DATA[0] H31
GPIO26
CI_DATA[1] F34
GPIO27
CI_DATA[2] E36
GPIO28
CI_DATA[3] N33
GPIO29
CI_DATA[4] P32
GPIO30
CI_DATA[5] M35
GPIO31
CI_DATA[6] M37
GPIO32
CI_DATA[7] M33
GPIO33
F35
MT5369_TS_IN[0]
GPIO34
E35
MT5369_TS_IN[1] GPIO35
E37
MT5369_TS_IN[2]
GPIO36
N32
MT5369_TS_IN[3] GPIO37
M34
MT5369_TS_IN[4]
GPIO38
M36
MT5369_TS_IN[5] GPIO39
M32
MT5369_TS_IN[6] GPIO40
L33
MT5369_TS_IN[7] GPIO41
E33
/USB_OCD2
GPIO42
E32
/USB_OCD1
GPIO43
F32
NEC_WOL
GPIO44
A29
USB_CTL2
GPIO45
D31
USB_CTL1
GPIO46
C31
EXT_SPK_VOL-
GPIO47
E30
GPIO48
E31
MODEL_OPT_0
GPIO49
F31
MODEL_OPT_1 GPIO50
E29
GPIO51
AP9
MODEL_OPT_3 GPIO52
AT9
MODEL_OPT_7 GPIO53
AR9
MODEL_OPT_5 GPIO54
SC_ID_SOC AU9
MODEL_OPT_6 GPIO55
NON_EU
R193 10K AN23
ADIN0_SRV
R176 10K AN24
ADIN1_SRV
R162 AP23
10K
ADIN2_SRV
R163 10K AR23
ADIN3_SRV
AU23
LAN1_DET
ADIN4_SRV
AT23
OPC_EN ADIN5_SRV
AM24
/TU_RESET ADIN6_SRV
AM23
MODEL_OPT_4 /S2_RESET ADIN7_SRV
xxLY750H-ZA
MID_MAIN_1
AR18
U0TX SOC_TX
AP18
U0RX SOC_RX
AU16
U1RX MTK_NEC_RX
AT16
U1TX MTK_NEC_TX
A35
POWE EMMC_CMD
C33
POOE
B34
EMMC_DATA[2-7]
POCE1
D33
POCE0 EMMC_DATA[7]
D29
PDD7
EMMC_DATA[6]
C30
PDD6 EMMC_DATA[5]
D30
PDD5
EMMC_DATA[4]
B31
PDD4 +3.3V_NORMAL
EMMC_DATA[3]
A31
PDD3
EMMC_DATA[2]
B32
PDD2
R157
A32
4.7K
PDD1
C32
OPT
PDD0
D32
PARB R178
A34
PACLE EMMC_DATA[1] 4.7K
C34
EMMC_DATA[0] OPT
PAALE
C29
EMMC_CLK EMMC_CLK
AM20
OPWRSB
AM22 R172 22
ORESET SOC_RESET
AU21 C114
OIRI 0.1uF
16V
D27 R159 4.7K
FSRC_WR
AT21
STB_SCL
STB_SCL
AR21
STB_SDA STB_SDA
T34
DEMOD_RST PCM_RST
T32
DEMOD_TSCLK
T36
SOC <- P:I
DEMOD_TSDATA0
U36
DEMOD_TSDATA1 TS_S_IN_0_CLK
T33
DEMOD_TSDATA2 TS_S_IN_0_VAL
T30
DEMOD_TSDATA3 TS_S_IN_0_SYNC
V33
DEMOD_TSDATA4 TS_S_IN_0_DATA
V32
DEMOD_TSDATA5
V31
DEMOD_TSDATA6
V30
DEMOD_TSDATA7
T35
DEMOD_TSSYNC
T31
DEMOD_TSVAL
N36
/PCM_REG
CI_INT
T37
CI_TSCLK /PCM_CE1
R35
CI_TSDATA0 MT5369_TS_SYNC
CI SLOT -> SOC
R37
CI_TSSYNC /PCM_WE
R36
CI_TSVAL /PCM_OE
R34
MT5369_TS_VAL
PVR_TSCLK CI SLOT -> SOC
R32
PVR_TSVAL CI_A_VS1
R33
MT5369_TS_CLK
PVR_TSSYNC CI SLOT -> SOC
P33
PVR_TSDATA0 /PCM_IRQA
P34
/PCM_WAIT
PVR_TSDATA1
N37
/CI_CD2
SPI_CLK1
P35
SPI_CLK /CI_CD1
N34
SPI_DATA /PCM_IORD
N35
SPI_CLE /PCM_IOWR
AU12 R195 22
OPWM2 PWM_DIM2
AT12 R196 22
OPWM1 PWM_DIM1
AR12
OPWM0
R197 R198
A37 1K 1K
SD_D0
C35
SD_D1
A36 PWM2_PULL_DOWN_1K
SD_D2 PWM1_PULL_DOWN_1K
B35
SD_D3
B36
SD_CMD
B37
SD_CLK
AT11
LDM_CS
AU11
LDM_CLK
AR10
LDM_VSYNC
AM9
LDM_DO
AP10
LDM_DI
AN22
LED_PWM1
LED_PWM1
AP21
LED_PWM0 LED_PWM0
5V Tolerance
AU20
OPCTRL11 OPCTRL_11_SCL
AT20
OPCTRL10 OPCTRL_10_SDA
AN18
EDID_WP_MTK
OPCTRL9
AP20
OPCTRL8 SC_DET
AM18
DSUB_DET
OPCTRL7
AN19
OPCTRL6 TCLK_SEL
AP19
HP_DET
OPCTRL5
AR19
OPCTRL4 LAN2_DET
AN21
OPCTRL3
OPCTRL3
AM19
OPCTRL2 EXT_SPK_DET
AN20
OPCTRL1 OPCTRL_1_SCL
AR20
OPCTRL0 OPCTRL_0_SDA
2013.12.27
8
LGE Internal Use Only