LG RAT375 - Page 28

3-13
USB FUNCTION
Check usb_5V.
Display “NO USB”.
YES
YES
Check usb_D+/D-
(R501,R502).
YES
Plug-in usb device.
Check CN401.
NONO
YES
Display “READ”.
YES
Display “NO FILE”.
YES
Check usb jack (JK501).
NO
Replace IC801.
NO
Check IC801(Pin116, 117).
Check usb audio fi le in usb device
(MP3, WMA fi le is playable)
YES
2. USB FUNCTION