LG 31MU97 Service Manual page 27

+PCIe_3.3V
+PCIe_3.3V
TBT OPT
IC1400
TBT OPT
W25X40CLSNIG
R1400
4.7K
CS VCC
1 8
/SPI_CS
DO[IO1] HOLD
2 7
SPI_DI
WP CLK
3 6
GND DI[IO0]
4 5
TBT OPT
R1402
4.7K
GPIO0
OPT
R1403
4.7K
GPIO1
OPT
R1404
4.7K
GPIO2
GPIO0 GPIO1 GPIO2 FUCTION
0 1 0
0 1 1 Asynchronous Mode(Default)
0 0 x Debug / Test Mode
GPIO0, GPIO1, GPIO2 Internal Pull-High
TBT OPT
+PCIe_3.3V
R1405
12.1K
1%
OPT
C1400
10uF
10V
Pull-High for others application
Pull-Low for Express Card/Mini Card application
* PESEL Internal Pull-High
GPIO[1]
1
GPIO1
SMI THERMAL
2
OPT
GPIO[2]
R1401 3
GPIO2
4.7K PE_SEL
4
PE_PWRDET
5
PEPWRDET
PE_CLKREQ
6
VCC_1
7
SPI_CLK
8
SPI_SCK
SPI_DO
9
SPI_DO
SPI_CS
10
/SPI_CS
SPI_DI
11
SPI_DI
GND_1
12
PORST
13
PORST
+PCIe_1.05V
UART_RX
14
UART_TX
15
VDD_1
16
+PCIe_3.3V_SUS
+PCIe_1.05V_SUS
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
2014.05.27
27pF->22pF
Sunny electronics recommend
PCIe_OSCI
TBT OPT
C1402
TBT OPT TBT OPT
22pF
OPT TBT OPT
C1401 X1400
0.1uF C1404 R1409
16V 20MHz 1M
TBT OPT
12pF
C1403
22pF
PCIe_OSCO
SPI_SCK
SPI_DO
+PCIe_3.3V
TBT OPT
R1407
4.7K
PEPWRDET
OPT
R1408
4.7K
+PCIe_1.05V
OPT
C1407
10uF
10V
VDDU_2
48
U3RXN_A
47
65
U3RXP_A
46
TBT OPT
GNDA_2
45
C1405
0.1uF
TBT OPT U3TXN_A
44 16V
IC1401 U3TXP_A
43
C1406
RESERVED
42
ASM1042A 0.1uF
16V
VCCU
41
TBT OPT
U3TXN_B
40
U3TXP_B
39
GNDA_1
38
U3RXN_B
37
U3RXP_B
36
+PCIe_1.05V_SUS
VDDU_1
35
VDD_SUS_2
34
GND_2
33
+PCIe_3.3V +PCIe_1.05V
TBT OPT
R1406
4.7K
TBT OPT
IC1402
TPS22965
+PCIe_3.3V_SUS
VIN_1
TBT OPT
1 8
C1409
1uF
VIN_2
6.3V
2 7
TBT OPT
R1412
0 ON
3 6
PM_S0_EN
OPT
+5V
R1413
VBIAS
0
4 5
PM_S3_EN
TBT OPT
IC1403
TPS22965
+PCIe_1.05V_SUS
VIN_1
TBT OPT
1 8
C1408
1uF
VIN_2
6.3V
2 7
TBT OPT
R1410
ON
0
3 6
PM_S0_EN
OPT
+5V
R1411
VBIAS
0
4 5
PM_S3_EN
+PCIe_3.3V
+PCIe_3.3V +PCIe_3.3V
TBT OPT
OPT
OPT
R1415
R1414
100K
100K
OPT
OPT D D
Q1400
C1410 G G
2N7002A
1uF
10V
S S
+PCIe_3.3V
SSTXM0
SSTXP0
TBT OPT TBT OPT TBT OPT TBT OPT
C1411 C1414 C1417 C1419
0.1uF 0.1uF 0.1uF 0.1uF
SSRXM0
16V 16V 16V 16V
SSRXP0
+PCIe_3.3V
+PCIe_1.05V
TBT OPT TBT OPT TBT OPT TBT OPT
C1412 C1415 C1418 C1420
0.1uF 0.1uF 0.1uF 0.1uF
16V 16V 16V 16V
+PCIe_1.05V_SUS
TBT OPT TBT OPT
C1413 C1416
0.1uF 0.1uF
16V 16V
CLose to ASM1042A
[EP]GND
+PCIe_3.3V
PM_S3_EN
VOUT_2
+THUNDER_3.3V
VOUT_1
TBT OPT
R1418
TBT OPT
CT 20K R1419
0
TBT OPT
C1421
D
1000pF
OPT OPT
GND
50V
R1417
Q1402
0
G
AO3438
SX_CTRL_OD
S
OPT
R1420
0
PM_S0_EN
[EP]GND
+PCIe_1.05V
VOUT_2
VOUT_1
CT
TBT OPT
C1422
1000pF
GND
50V
+PCIe_3.3V_SUS
TBT OPT
R1416
TBT OPT TBT OPT
C1426
68K
C1429 C1431
1uF
10uF 0.1uF
6.3V
10V 16V
OPT PORST
Q1401
2N7002A
+3.3V
C1430 C1432
+PCIe_3.3V_SUS 10uF 0.1uF
10V 16V
TBT OPT TBT OPT
C1424 C1427
0.1uF 0.1uF HUB_USB_UP_TX+
16V 16V
HUB_USB_UP_TX-
SSTXP0
SSTXM0
HUB_USB_UP_RX+
HUB_USB_UP_RX-
SSRXP0
SSRXM0
TBT OPT TBT OPT TBT OPT
C1423 C1425 C1428
0.1uF 0.1uF 0.1uF
16V 16V 16V
HUB_USB_DP_UP
HUB_USB_DM_UP
DP0
DM0
UHD MODEL
PCIE HOST CONTROLLER
TBT OPT
IC1405
+PCIe_3.3V_SUS
+THUNDER_3.3V TPS22965
[EP]GND
VIN_1 VOUT_2
TBT OPT
1 8
C1433
1uF
VIN_2 VOUT_1
10V
2 7
ON CT
OPT
3 6
C1434
+5V
0.47uF
VBIAS GND
6.3V
4 5
+PCIe_1.05V_SUS
TBT OPT
IC1404
TJ4220GDP-ADJ
[EP]GND
NC_1 GND
1 8
TBT OPT
R1422
EN2 ADJ/SENSE
3.3K
2 7
1%
VIN3 VOUT
3 6
NC4 NC_2
2A TBT OPT TBT OPT
4 5
C1435
R1421
10uF
10K
10V
1%
+THUNDER_3.3V
IC1406
ASM1458
U3_A0 GND_2
1 38
U3_A1 U3_B0
2 37
USB_UP_TX+
U3_C0 U3_B1
3 36
USB_UP_TX-
U3_C1 GND_1
4 35
U3_A2 VDD_6
5 34
U3_A3 U3_B2
6 33
USB_UP_RX+
U3_C2 U3_B3
7 32
USB_UP_RX-
U3_C3 VDD_5
8 31
VDD_1 SEL
9 30
USB_HUB/TBT_SEL
VSS_1 VSS_11
10 29
VSS_2 VSS_10
11 28
VSS_3 VSS_9
12 27
VSS_4 VDD_4
13 26
U2_A0 VSS_8
14 25
U2_A1 U2_B0
15 24
USB_DP_UP
U2_C0 U2_B1
16 23
USB_DM_UP
U2_C1 VSS_7
17 22
2014.2.14
14 18
LGE Internal Use Only
TBT OPT
C1436
0.1uF
16V