Usb Part - LG LM-U1060 Service Manual

I USB PART
TURN ON USB
" CHECKING " OR "USB" DISPLAY CHECK
READING OK CHECK
IF PLAY, AUDIO OUTPUT CHECK
OK
CONNECTOR CHECK
( PN805, CN806, PN810 )
CHECK POWER SUPPLY CIRCUIT( CN806 )
CHECK MICOM INTERFACE CIRCUIT( PN805 )
PIN13: RX (IC805 PIN49 :TXD)
PIN14: TX (IC805 PIN33 : RXD)
CHECK PN810 1 PIN : 5V
CHECK PN810 PIN 2(D-), 3(D+)
CHECK OTI6888 (IC805)
CHECK SIGNAL STCK,STREQ,STDATA
STCK : IC805 PIN52 , IC801 PIN 55
STREQ : IC805 PIN53 , IC801 PIN 54
STDATA: IC805 PIN54 , IC801 PIN 56
CONNECTOR CHECK (CN806)
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