LG GT810h Service Manual page 108

u-USB Connector
VREG_MSMP_2.6V
CN401
6
8
10
12
1
2
3
4
5
7
9
11
13
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TA OVP Circuit
2mm
9
ID
8
7
6
5
For OVP test
U402
C405
3900p
50V
Close to u-USB connector
U404
1
D+
Exchange DP and DM for layout.
2
D-
3
GND
rev 1.0
4
USB_DP_TX
HSD2-
rev 1.0
5
USB_DM_RX
HSD2+
USBH_SEL S/W
LOW 1 (USBH)
HIGH 2
- 109 -
4. TROUBLE SHOOTING
DRAIN_THERMAL
1
VCC IN
2
OUT GND
3
GATE CNTRL
4
SRC DRAIN
NUS3065MUTAG
+VPWR
NLAS7222C
10
USBH_SEL
S
9
VCC
8
USBH_EN_N
_OE
7
USBH_DM
HSD1+
6
USBH_DP
HSD1-
C413
0.1u
VCHG_VBUS
2mm
NFM18PC104R1C3
1
IN
OUT
GND1 GND2
FL401
LGE Internal Use Only