Usb Part - LG CM1530 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

6. USB PART

Turn on USB
YES
Check
"CHECKING" or "USB"
display.
YES
Check reading OK.
YES
If play,
audio output
check
YES
OK
NO
Check connector CON107.
NO
Check CON107
pin2, 3 (D+, D-) signal.
NO
Check IC801.
3-8
NO
Check power supply circuit
USB +5 V.
NO
Check IC700 circuit
NO
Check IC801 pin41, 42 (D+, D-).
YES
Normal.