Check the USB device being usedYESIs the USB device supported by this unit?Is a USB hub being used?This unit supports devices in the FAT16 andFAT32-formatted mass storage class, MTP-compatible devices and iPods (with theexception of some models).Do not use a USB hub.NOYESNOChecking the unitYESYESCan a voltage (5V) be confirmed between pin 1 and pin 4 of JK101(USB Connector) on USB PCB?The circuit between IC853 of the DIGITAL PCB and JK101 of theUSB PCB are faulty.Are N2801 of the ADAPTER PCB and CN914 of the USB PCBcorrectly connected?The circuit around IC854 is faulty.Connect the connectors correctly.NONO5.3. A connected USB device is not recognized.83
