LG 31MU97 Service Manual page 17

+3.3V
OPT R269 4.7K
AMP_nMUTE
OPT
R284 4.7K
DP_SELECT
OPT
2014.06.09 R271 4.7K
APPLY->OPT WLED_ADIM
R272 4.7K
AMP_RESET
2014.06.24 R274 4.7K
OPT
APPLY->OPT
PANEL_ON
R285 4.7K
POWER_CONTROL
R212 4.7K
USB_HUB/TBT_SEL
R296 4.7K
2014.06.24
WLED_ENABLE OPT
APPLY->OPT
R234 100K
EDID_ON_OFF_1
R235 100K
EDID_ON_OFF_2
R236 4.7K
OPT
USB_POWER_EN
3.3V Pull-Up for 5V Open-Drain Port
+3.3V
R295 R213
TBT OPT
4.7K 4.7K
R215
PM_S0_EN
0
OPT
PM_S3_EN R216
0
TBT_DP_HPD
+3.3V_SCALER
2014.06.11
R200
1K 33->0
+3.3V_SCALER +3.3V_SCALER
OPT
C200
R204
1uF
6.3V 10K
+3.3V
R205
R238 10K
10K
R232 4.7K
HDMI_DET
R233
7.5K
HDMI1_DET
+3.3V
For Jig Test
R293
10K
R291 4.7K
DP_DET
R292 7.5K
DP1_DET
TP903
UART_TX
TP904
UART_RX
KEY_SCL
KEY_SDA
OSCI R210
33
C201 AMP_SCL
18pF
X200 R201 R211
1M 33
12MHz AMP_SDA
C202
18pF
OSCO
+3.3V_SCALER
IC205
MX25L8006EM2I-12G
C211
0.1uF
CS# VCC
1 8
CS
FLAH R208
10K
8MBIT
SO/SIO1 HOLD#
2 7
SDO
WP# SCLK
3 6
WP_SPI SCK
GND SI/SIO0
4 5
SDI
C269 R228 C207
68pF 10K
68pF C209 C212
OPT 68pF 68pF
OPT
OPT OPT
C219
DP_TX0N
C220
DP_TX0P
C221
DP_TX1N
+3.3V C222
DP_TX1P
DP_TX2N C223
C224
DP_TX2P
C225
R262 DP_TX3N
C226
100K DP_TX3P
C227
DP_AUXN_TX
DP_AUXP_TX C228
R263 DP_TXHPD
100K
R294
100K
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
IC100
NT68370(E Ver.)
B2 C12
AMP_nMUTE R280 PC3/CEC PE7/CBUS4 EDID_ON_OFF_1
B3
AUD_SCK PC0/CEC/SCK_O
D13
33
PD6/DIN_VS MULTI_ON
D12 C13
HP_DET PF7/VBUS4/WD_I PF2/CD_SENSE3/DIN_HS_CS DP_SELECT
C11 D14
HDMI1_SCALER_SCL HDMI_SCALER_SDA
PA6/DDC_SCL3/RXD3 PA5/DDC_SDA2/TXD2/DIN_HREF_DE
D11 C14
HDMI_SCALER_SCL
HDMI1_SCALER_SDA PA7/DDC_SDA3/TXD3 PA4/DDC_SCL2/RXD2/DIN_0
A3 C15
DP_PLUG R281 PF3/CD_SENSE4 PE6/CBUS3 EDID_ON_OFF_2
A4 D15
AUD_MCLK PD5/IR_PORT1/MCLK_O PF6/VBUS3/SD_I HDMI1_HPD
33
C3 C16
DP0_HPD PE4/CBUS1/HPD1 PB1/ADC1/INTE1/DIN_3
R254
B4 B16
POWER_CONTROL PF4/VBUS1 PB0/ADC0/INTE0/DIN_4 SLAVE_RESET
C4 A16
DP_SCL 100 /USB2SER_RESET
PB4/DDC_SCL0/RXD0 PE1/ADDR1/DIN_1
D3 D17
DP_SDA PB5/DDC_SDA0/TXD0 PE0/LPD_IN0/ADDR0
D4 C17
PF0/CD_SENSE1 PC2/DBC/PWMB/SD_O AUD_DATA
E3 B17
TBT_DP_PLUG PD4/IR_PORT3 PC1/LPD_OUT/PWMA LED
F3
PE5/CBUS2/HPD2
F4
DP1_PLUG
PF5/VBUS2
G3
DP1_SCL PB6/DDC_SCL1/RXD1
G4
DP1_SDA PB7/DDC_SDA1/TXD1
H3
HDMI_HPD PF1/CD_SENSE2
R253 H4
SLAVE_SET PC7/IR_PORT2/SCK_I
100
R214
T3
EDID_WP PA0/ADC4/PWMA
T4
WLED_ENABLE 100
PA1/ADC5/PWMB
P3
USB_SCL R202 0
PC4/DDC_SCL4/RXD4
P4
USB_SDA R203 0
PC5/DDC_SDA4/TXD4
R4
ITLC PD7
V3
RSTN
N1
OSCI OSCI
OPT N2 A20
OSCO OSCO OUT_P OUT_P
R206 B20
OUT_N OUT_N
10K V1
OPT1
V2 C20 R282 100
OPT0 PG3/DIN_6/DUI_INTE
D20 R245 22 TP200
R207 2014.05.20 Modify PG2/DIN_5/DUI_SPI_SIO
A19 R255 22 TP201
10K PG1/DIN_2/DUI_SPI_CE
AC16 B19 R273 22 TP202
HP_MUTE PE2/DBC/PWMC/M2_SPI_CE3 PG0/DIN_CK/DUI_SPI_CK
AD17 C19
R290 0
WLED_ADIM PE3/PWMD/M2_SPI_CE4 PG7/DIN_7/DUO_INTE
AC17 D19 R286 22
TP203
PA2/ADC6/PWMC/DIN_19 PG6/DIN_8/DUO_SPI_SIO
R287
AE17 A18 22 TP204
PA3/ADC7/PWMD/DIN_18 PG5/DIN_23/DUO_SPI_CE
AF17 B18 R288 22 TP205
KEY2
PB2/ADC2/INTE2/DIN_21 PG4/DIN_22/DUO_SPI_CK
AE18 D18 R217 22 TP206
KEY1
PB3/ADC3/INTE3/DIN_20 DU_VS/PA4
AD18 C18 R218 22 TP207
PANEL_ON P34/RXD5/DIN_16 DU_DE/PA5
AD19 A17 R219 22 TP208
USB_HUB/TBT_SEL P35/TXD6/DIN_15 DU_FAST_MUTE/PD0
AC18
AMP_RESET PC6/AMUTE/M2_SPI_CE2/AO_IN/DIN_17
R259 33 AF18 J3
P30/RXD/AO_OUT/DIN_14 HI_M_S_SEL
R258 33
AC19
P31/TXD/AO_OUTB/DIN_13
AE19 J4 R220 22 TP209
PD2/M2_SPI_SO/SD_I/DIN_12 HI_SPI_CK/P35
AE20 K3 R221 22 TP210
PD3/M2_SPI_CE1/WD_I/DIN_11 HI_INTE/PA2
AF19 K4
PD_CTRL PD0/M2_SPI_CLK/SCK_I/DIN_10 SPI_CE3/P34
R264 100 AF20 L3
WP_SPI PD1/M2_SPI_SI/DIN_9 SPI_CE2/P31
R227 22 AD20 L4 R222 22
TP211
CS SPI_CE SPI_CE1/P30
R229 22 R223
AC20 M3 22 TP212
SDO SPI_SO SPI_SIO4/PB3
R230 22 AC21 M4 R224 22 TP213
SCK
SPI_CLK SPI_SIO3/PB2
R241 22 AD21 N3 R225 22 TP214
SDI
SPI_SI SPI_SIO2/PB1
N4 R226 22 TP215
SPI_SIO1/PB0
R261
1K
ITLC
H: Intelace Mode
L: Normal Mode
IC100
NT68370(E Ver.)
C25 N24
0.1uF
DP_TX0N TXA0N TXB5P
16V C26 N23
0.1uF
DP_TX0P TXA0P TXB5N
16V
0.1uF D25 N26
DP_TX1N TXA1N TXB4P
16V
0.1uF D26 N25
TXA1P TXB4N
16V DP_TX1P
E25 P24
0.1uF TXBCLP
16V DP_TX2N TXA2N
E26 P23
0.1uF
16V DP_TX2P TXA2P TXBCLN
F25 P26
0.1uF
16V DP_TX3N TXACKN TXB3P
F26 P25
0.1uF
DP_TX3P TXACKP TXB3N
16V R24
TXA3N TXB2P
0.1uF G25 R23
DP_AUXN TXA3P TXB2N
16V
G26 R26
0.1uF TXB1P
16V DP_AUXP TXA4N
R25
TXB1N
TXA4P
G24
DP_TXHDP
T24
TXB0N TXA5P
H24 T23
DPTX_OSCI TXB0P TXA5N
J24 T26
TXB1N TXA4P
DPTX_OSCIO
T25
TXA4N
TXB1P
U24
TXB2N TXACLP
U23
TXB2P TXACLN
U26
TXBCKN TXA3P
H26 U25
EDP_TX0P TXBCKP TXA3N
H25 V24
EDP_TX0N TXB3N TXA2P
J26 V23
TXA2N
EDP_TX1P TXB3P
J25 V26
TXA1P
EDP_TX1N TXB4N
K26 V25
EDP_TX2P TXB4P TXA1N
K25
EDP_TX2N
L26
EDP_TX3P
L25 W24
EDP_TX3N TXC0N TXD5P
W23
TXC0P TXD5N
M25 W26
TXD4P
EDP_AUXN TXC1N
M26 W25
EDP_AUXP TXC1P TXD4N
Y24
TXC2N TXDCLP
K24 Y23
EDP_TXHDP TXC2P TXDCLN
Y26
TXCCKN TXD3P
Y25
TXCCKP TXD3N
AA24
TXD2P
TXC3N
AA23
TXD2N
TXC3P
AA26
TXC4N TXD1P
AA25
TXC4P TXD1N
AE25
EXT_SWING
OPT
R242 AF21 AB24 +10V_Panel
3P_OPEN TXD0N TXC5P
AE21 AB23
10K TXC5N
3N_OPEN TXD0P
AF22 AB26
2P_OPEN TXD1N TXC4P
AE22 AB25
2N_OPEN TXD1P TXC4N
AF23 AC24
1P_OPEN TXD2N TXCCLP
AE23 AC23
1N_OPEN TXD2P TXCCLN
AF24 AC26 C218
0P_OPEN TXDCKN TXC3P
10uF
AE24 AC25
TXC3N 25V
0N_OPEN TXDCKP
AD24
TXC2P
TXD3N
AD22 AD23
LOCKN_OPEN TXD3P TXC2N
AC22 AD26
HTPDN_OPEN TXD4N TXC1P
AD25
TXD4P TXC1N
+3.3V_SCALER
C214 C235 C258 C237 C248 C259
C278 C233 C238 C244
10uF 10uF 10uF 10uF 10uF 10uF 0.1uF 0.1uF 0.1uF 0.1uF
16V 16V 16V 16V
10V 10V 10V 10V 10V 10V
+3.3V
+3.3V_SCALER +3.3V_SCALER_C +1.2V_SCALER
R237
10K
R298 4.7K
TBT_A_DET
R299 7.5K
TBT_B_DET
C247 C263 C232 C253 C265 C271 C284 C240
C239
10uF 10uF 10uF 0.1uF 0.1uF 10uF 0.1uF 0.1uF 10uF
10V 10V 10V 16V 16V 10V 16V 16V 10V
+5V
R209
10K
5V_DET_INT
+1.8V_SCALER
C231 C254 C236 C243
C250 C257 C264 C205
10uF 10uF 10uF 10uF 0.1uF 0.1uF 0.1uF 0.1uF
16V 16V 16V 16V
10V 10V 10V 10V
EDID_WP1
DUI_SPI_SIO
DUI_SPI_CE
DUI_SPI_CK
USB_POWER_EN
DUO_SPI_SIO
DUO_SPI_CE
DUO_SPI_CK
+3.3V_SCALER
DU_VS
DU_DE
DU_FAST_MUTE
R260
10K
SPI_CLK_IO
HI_INTE
SPI_CE1_IO
R240
SPI_SIO4 47K B
PD_CTRL
SPI_SIO3
SPI_SIO2
SPI_SIO1
R239 C208
0.1uF
10K 16V
P200
FI-RE51S-HF-J-R1500
P201
FI-RE41S-HF-J-R1500
1
2
1
3
2
+3.3V 4
3
5
4
HIGH:PBP Concept
NC :Normal 6
5
R266
7
6
R270 0 1K
8
7
9
8
10
9
11
10
TXA1N
12
TXC1N
11
TXA1P
13
TXC1P 12
TXA2N
14
TXC2N 13
TXA2P
15
TXC2P
14
TXA3N
16
TXC3N
TXA3P 15
17
TXC3P 16
18
17
TXACLN
19
TXCCLN
18
TXACLP
20
TXCCLP 19
21
20
TXA4N
22
TXC4N 21
TXA4P
23
TXC4P
22
TXA5N
24
TXC5N 23
TXA5P
25
TXC5P 24
26
25
27
26
TXB1N
28
TXD1N 27
TXB1P
29
TXD1P 28
TXB2N
30
TXD2N
29
TXB2P
31
TXD2P 30
TXB3N
TXD3N 32
31
TXB3P
33
TXD3P
32
34
TXBCLN 33
TXDCLN 35
34
TXBCLP
TXDCLP 36
35
37
36
TXB4N
38
TXD4N
37
TXB4P
39
TXD4P 38
TXB5N
40
TXD5N 39
TXB5P
41
TXD5P
40
42
41
43
42
44
45
46
47
R231
JP200
0
48
49
50
R265
10K
51
52
Closed to G9/H9/G20/H20/D21
+1.2V_SCALER_C
C251 C256 C245 C262 C280 C281 C282 C285 C286
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
16V 16V 16V 16V 16V 16V 16V 16V 16V
C230
10uF
10V
C252 C234 C241 C260 C266
10uF 10uF 0.1uF 0.1uF 0.1uF
10V 10V 16V 16V 16V
Closed to H10/G11/J21/K21/J20/K20
C291 C292 C293 C294 C295
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
16V 16V 16V 16V 16V
IC210
TPS22965 [EP]GND
+1.2V_SCALER
+1.2V_SCALER_C
VIN_1 VOUT_2
1 8
C229
1uF VIN_2 VOUT_1
10V 2 7
ON CT
3 6
OPT
+5V C270
0.01uF
VBIAS GND 25V
4 5
C
Q200
MMBT3904(NXP)
E
R268
1K
+1.8V_PD_ENABLE
+3.3V_SCALER +3.3V_SCALER_C
Q202
AO3435
R267 S
C275
20K 4.7uF
G
10V
D
C276
1uF
10V
R283
1K
C
R256
10K B Q201
MMBT3904(NXP)
E
R257
10K
+5V
RED LED OPT
P202
BLM18PG121SN1D
12507WR-08L L200
+3.3V 1 R243 R244
1K 1K
R249
JP202
33
KEY1 2
R250
JP203
KEY2 33
3
JP204
GND 4
JP205
LED 5
JP206
. 6
SCL
7
SDA JP207
8
JP211
9
D200 C283 D201 D202 D203 C288
1uF 68pF
.
C268 C273
0.1uF 0.1uF
16V 16V
L206 IC100
BLM18PG121SN1D NT68370(E Ver.)
L203
BLM18PG121SN1D
G17 H12
CVDD_1 GND_1
G18 H13
CVDD_2 GND_2
G19 H14
CVDD_3 GND_3
H19 H15
CVDD_4 GND_4
C246 C261 C206 J19 H16
C216 C296 C210 C213
CVDD_5 GND_5
0.1uF 10uF 0.1uF 10uF 10uF 0.1uF 0.1uF
16V 16V 16V 16V K19 H17
10V 10V 10V CVDD_6 GND_6
L19 H18
CVDD_7 GND_7
M19 J12
CVDD_8 GND_8
N19 J13
CVDD_9 GND_9
P19 J14
CVDD_10 GND_10
R19 J15
CVDD_11 GND_11
T19 J16
CVDD_12 GND_12
U19 J17
CVDD_13
GND_13
V17 J18
C242 C249 C255
0.1uF 0.1uF 0.1uF CVDD_14 GND_14
V18 K12
16V 16V 16V
+1.2V_SCALER CVDD_15 GND_15
V19 K13
L202 CVDD_16 GND_16
K14
BLM18PG600SN1D
GND_17
G11 K15
VDD12RX_1 GND_18
+3.3V_SCALER H10 K16
VDD12RX_2 GND_19
G9 K17
C215 C217
0.1uF 0.1uF VDD33RX_1 GND_20
H9 K18
16V 16V
VDD33RX_2 GND_21
+1.2V_SCALER_C L12
GND_22
M9 L13
VMM_ADC12_1 GND_23
N9 L14
VMM_ADC12_2 GND_24
+1.2V_SCALER L15
GND_25
V9 L16
VCCA/VCCD_1
GND_26
V10 L17
VCCA/VCCD_2 GND_27
V12 L18
VCC_CLK GND_28
M12
GND_29
W18 M13
VX1_EXT12_1 GND_30
W19 M14
VX1_EXT12_2 GND_31
+1.2V_SCALER M15
GND_32
C203 C204
J9 M16
0.1uF 0.1uF
16V 16V APR1_V12_1 GND_33
J10 M17
APR1_V12_2 GND_34
K9 M18
APR1_V12_3 GND_35
K10 N12
APR1_V12_4 GND_36
N13
GND_37
N14
GND_38
+1.2V_SCALER N15
L204
GND_39
N16
BLM18PG600SN1D
GND_40
J21 N17
DP_AVDD_PLL_1 GND_41
K21 N18
C287 DP_AVDD_PLL_2 GND_42
C277 C297 P12
0.1uF 0.1uF 0.1uF
GND_43
16V 16V 16V J20 P13
DP_AVDD_1 GND_44
K20 P14
DP_AVDD_2 GND_45
+3.3V_SCALER P15
GND_46
E11 P16
TVCC33_1 GND_47
E12 P17
TVCC33_2 GND_48
E13 P18
TVCC33_3 GND_49
R12
GND_50
M7 R13
VCC_LDO33 GND_51
M8 R14
VCC_ADC33 GND_52
R15
GND_53
N8 R16
MPLL33 GND_54
N7 R17
OSC_VCC33 GND_55
P7 R18
VDD_DLL GND_56
+3.3V_SCALER_C T12
GND_57
R21 T13
VCCA_LVDS_1 GND_58
T21 T14
VCCA_LVDS_2 GND_59
+3.3V_SCALER T15
GND_60
G20 T16
DP_AVDD_33_1 GND_61
H20 T17
DP_AVDD_33_2 GND_62
+3.3V_SCALER_C T18
GND_63
F20
U12
VCC33_SSCK GND_64
+3.3V_SCALER U13
GND_65
D21 U14
OSC_MVCC3IO GND_66
U15
GND_67
E15 U16
DVDD_1 GND_68
E16 U17
DVDD_2 GND_69
E17 U18
DVDD_3 GND_70
+3.3V_SCALER Y3
GND_71
V20 AA3
VDD_VBYONE_33V_1 GND_72
W20 AB3
VDD_VBYONE_33V_2 GND_73
+1.2V_SCALER AC3
GND_74
F10 AD3
V12T_1 GND_75
F11 AD4
V12T_2 GND_76
G10
AD5
V12T_3 GND_77
+1.8V_SCALER AD6
GND_78
U7 AD7
VDD_CORE/VDD_MMU_1 GND_79
U8 AD8
VDD_CORE/VDD_MMU_2 GND_80
V7 AD9
VDD_CORE/VDD_MMU_3 GND_81
V8 AD10
VDD_CORE/VDD_MMU_4 GND_82
W7 AD11
VDD_CORE/VDD_MMU_5 GND_83
W8 AD12
VDD_CORE/VDD_MMU_6 GND_84
W9 AD13
VDD_CORE/VDD_MMU_7 GND_85
W10 AD14
VDD_CORE/VDD_MMU_8 GND_86
W11 AD15
VDD_CORE/VDD_MMU_9 GND_87
W12 AD16
VDD_CORE/VDD_MMU_10 GND_88
W13
VDD_CORE/VDD_MMU_11
W14
N10
VDD_CORE/VDD_MMU_12 ADC_GND
W15
VDD_CORE/VDD_MMU_13
W16 P10
VDD_CORE/VDD_MMU_14 OSC_GND
W17
VDD_CORE/VDD_MMU_15
Y7
VDD_CORE/VDD_MMU_16
Y8
VDD_CORE/VDD_MMU_17
Y9
VDD_CORE/VDD_MMU_18
+1.8V_SCALER Y10
VDD_CORE/VDD_MMU_19
Y11
+1.8V_SCALER
L205 VDD_CORE/VDD_MMU_20
BLM18PG600SN1D
R246
Y12
10K
1% VDD_CLK
Y6
MVREF
R247
10K C290 C279 C299 C298
1% 0.1uF 0.1uF 0.1uF 0.1uF
16V 16V 16V 16V
+3.3V
R248 R279
10K 10K
KEY1
KEY2
R278
10K
Q203
OPT
MMBT3904-(F)
C R277
4.7K
B
LED
OPT
R251 E
33
KEY_SCL
OPT R276
R252
4.7K
33
KEY_SDA
OPT
D204 D205
C272 C274
C289 C267
0.47uF 0.47uF
68pF 68pF
16V 16V
UHD MODEL 2014.2.14
GPIO/SCALER POWER/LVDS 2
LGE Internal Use Only
18