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7. USB
Yes
Yes
Yes
Yes
Does not recognize the USB.
Is there nothing wrong with the USB connector P1 of
the Display PCB?
Is there no damage around the contact where USB
cable are inserted.
Are there no bad solder joints?
Replace the F.PANEL ASSY
Is there is nothing wrong with the 4P cable JP1 of
Display PCB?
Does disconnection of the cable?
Are there bad solder joints?
Replace the F.PANEL ASSY
Is the cable correctly inserted into the connector 4P
XP4 of Main PCB?
4p cable to be inserted into the XP4.
Refer to No.2 LED blinking.
Is that supplied from 5V 3pin, 4pin of XP1 of Main
PCB?
Replace Main PCB.
No
No
No
No
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