Denon AVR-X1100W Service Manual page 83

5.3. A connected USB device is not recognized.
Is a USB hub being used?
Is the USB device supported by this unit?
Are N2801 of the ADAPTER PCB and CN914 of the USB PCB
correctly connected?
Can 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 the
USB PCB are faulty.
Check the USB device being used
NO
YES
Checking the unit
YES
YES
YES
Do not use a USB hub.
This unit supports devices in the FAT16 and
NO
FAT32-formatted mass storage class, MTP-
compatible devices and iPods (with the
exception of some models).
NO
Connect the connectors correctly.
NO
The circuit around IC854 is faulty.
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