Usb - LG D686 Service Manual

3.7 USB

START
Check the Connection
of uUSB
Connection OK?
Main PCB & Sub FPCB Connection OK?
Is the signal ok for USB+ & - ?
Change the Main PCB
LGE Internal Use Only
Yes
Yes
Yes
END
CN10000
10
6
7
11
No
Change I/O connector( SUB FPCB CN10000)
No
Check Connector( SUB FPCB CN10001)
No
Change Sub FPCB
USB_DP
USB_DN
SPK_LP
SPK_LN
SPK_RP
SPK_RN
LED_B
LED_G
LED_R
VCHG_OVP_IN
- 82 - Copyright © 2013 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
GND
8
1
2
3
4
5
9
CN1001
1 30
2 29
3 28
4 27
5 26
6 25
7 24
8 23
9 22
10 21
11 20
12 19
13 18
14 17
15 16
Only for training and service purposes
USB_ID
VMIC
MIC_N
MIC_P
KCOL1_F
KROW1_F