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AVR-4310CI/AVR-4310/AVC-4310
6.2. USB device is not recognized
Checking the settings
Are the USB port settings correct?
NO
Set the front and rear properly.
YES
Checking the USB device
Are you using a USB hub?
YES
You do not use the USB hub.
NO
Is the USB device compatible with the set?
NO
Only mass storage devices in FAT16 or FAT32 formats or MTP-
compatible devices and iPod (Remove some models) are sup-
ported.
YES
Checking the set (AVR-4310CI)
Is the wire properly connected between CX052 and CY052?
NO
Connect the wire properly.
YES
Is a voltage (5V) being supplied between pins 1 and 4 of JK451
(back panel USB connector) and JK981 on the 8U-210063-3 cir-
cuit board (front panel USB connector)?
NO
The TR452 and TR453 periphery circuitry is defective.
YES
Is the USB device not recognized for both the front and rear con-
nectors?
The circuit from IC462 to JK451 is defective.
YES
The circuitry from IC462 to JK981 on the 8U-210063-3 circuit
board is defective.
Is theCW302 pin 24 output level "H"?
NO
The circuitry from IC701 on the 8U-210064 circuit board to
CX302 is defective.
YES
The network module may be defective.
Rear is not recognized
Front is not recognized
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