LG LG-X230DS - Communication Suite: Phone, Messaging, Email

LGE Internal Use Only
3. TROUBLE SHOOTING
I/O connector is used as the USB port.
3.13 Checking USB Block
ImageChecking Flow
Circuit Diagram
: Next Page
Start
Check VAUX(T
P1)
Voltage
Check
TP1,TP2,TP3,TP4,
TP5 short or not
Re-solder or change
J902
USB function ok
Re-solder or change
Z906
Check TP6&
TP7 Voltage
Check U101 so
ldering
Re-solder or change
U501
Re-solder or change
U101
No
Yes
No
Yes
No
Yes
No
Yes
TP5
TP4
TP1
TP2
TP3
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rved. Only training and service purposes
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