LG FAS166F - Usb Function Check

3-22
ELECTRICAL TROUBLESHOOTING GUIDE
11. USB FUNCTION CHECK
USB function check
Check USB jack(CN350).Display “READ”.
Check USB audio file in USB device (MP3, WMA file is playable).
Check CN104.
Replace IC500.
Check USB_5V.
Check IC500 (Pin116, 117).Display “NO FILE”.
Plug-in USB device.
Display “NO USB”.
NO
NO
NO
NO
Check USB D+/D-
(R188, R189).
YES
YES
YES
YES
YES
YES
YES