LG 79UB980T-TA Service Manual page 38

+3.3V_NORMAL
R4401
4.7K
/USB_OCD1
USB_CTL1
R4400
10K
USB3.0 redriver IC EQ setting
-> EQ2: Low / DE1: Low
USB3_TX0P
USB3_TX0M
USB3_RX0P
USB3_RX0M
+3.3V_NORMAL
C4400 C4403 C4404 C4405
1uF 1uF 0.1uF 0.01uF
Place under DUT Near SN65LVPE502CP PIN VCC
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
OCP USB1
+5V_USB_1
+5V_NORMAL
IC4400
BD2242G
VIN VOUT
1 6
C4401
GND ILIM
0.1uF 2 5
16V
EN OC
3 4
+3.3V_NORMAL
19 12
HOST_RX1- NC_4
20 11
HOST_RX1+ DEVICE_TX1-
C4409
21 10
0.1uF
GND_2 DEVICE_TX1+
22 9
HOST_TX2- GND_1
23 8
HOST_TX2+ DEVICE_RX2-
C4407
0.1uF 24 7
NC_6 DEVICE_RX2+
[EP]GND
+3.3V_NORMAL
+3.3V_NORMAL
C4406 C4408 C4410 C4411
1uF 1uF 0.1uF 0.01uF
+5V_USB_2
USB_DM2
USB_DP2
C4414 C4322
22uF 10uF
10V 10V
+3.3V_NORMAL
C4413
0.1uF
0.1uF
C4412
USB3_DM
+3.3V_NORMAL
USB3_DP
USB3 (2.0)
+5V_USB_3
MAX 1.0A
3AU04S-385-ZC-(LG).
JK4302
USB_DM3
USB_DP3
ZD4300
5V C4416
22uF
10V
+5V_USB_1
ZD4301
C4415 C4402 5V
22uF 10uF
10V 10V
OPT
USB JACK
USB2 (2.0)
MAX 1.0A
3AU04S-385-ZC-(LG).
JK4300
C4310
ZD4302
10uF 5V
10V
USB1 (3.0)
MAX 1.2A
JK4400
PC2R009NJA1.
VBUS
1
D-
2
D+
3
GND
4
STDA_SSRX-
5
STDA_SSRX+
6
GND_DRAIN
7
STDA_SSTX-
8
STDA_SSTX+
9
10
SHIELD
BSD-14Y-UD-044-HD
2013-12-17
LGE Internal Use Only