Usb Ts - LG -D175F Service Manual

3.7 USB TS

START
Check the Connection of uUSB
Connection OK?
Main PCB Filter
Is the signal ok for USB+ & - ?
Change the Main PCB
LGE Internal Use Only
Yes
Yes
Yes
END
D9200
0531 change
clamping : 12V
MAX.27V (22.5A)
600W for Low Voltage Surge
CN9200
10 8 5
1
3
6 2
P3 P1
4
3
P4 P2
7 4
5
6
11 9
DNI
DNI
D9202
D9203
D9201
0522 add 0.4pF
No
Change I/O connector(CN9200)
No
Check Filter( FL9201)
No
Change Filter( FL9201 )
- 120 - Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
FL9200
1 3
VBUS_USB_OVP_IN
IN OUT
2 4
GND1 GND2
FL9201
0522 delete
1
USB_D_M
2
USB_D_P
100
PM_USB_ID
R9721
0522 change
C9202
33n
Only for training and service purposes