Usb Part - LG LM-K3960A Service Manual

I USB PART
TURN ON USB
Y
"SEARCHING "OR
"USB "DISPLAY CHECK
Y
READING OK CHECK
Y
OK
N
CHECK THE POWER SUPPLY CIRCUIT.
CHECK THE HRST#SIGNAL
CHECK THE USB PART AND DVD PART
N
CHECK THE USB JACK POWER SUPPLY.
CHECK THE USB DATA LINE.(P4302)
CHECK THE IC405 (UBI9021).(CHECK
DATA LINE PIN 14~17,20~23)
- 3-7 -
(CHECK P5701)
Y
Y
LINE.
(CHECK P4302)
Y
Y