LG SPJ2B-W - Usb Part

3-11
ELECTRICAL TROUBLESHOOTING GUIDE
6. USB PART
YES YES
NO
NO
YES
YES
Turn on USB
OK
Refer to
Power part troubleshooting.
Check JK302 pin1 5.2 V.
Check JK302 pin2(D-), pin3 (D+).
Check IC305 pin62, 64.
NO
NO
Check IC302 pin1
5.2 V input.
Check IC302
pin5 5.2 V input.
Check
Reading OK.