Yamaha MCR-640 Owner's Manual page 29

■ USB
Note
If a transmission error occurs but no status message is displayed on the front panel display of the receiver, check the connection between
the CD player and the USB device (☞p.10).
Status message
NO USB
The USB device is not connected.
OVER CURRENT
The USB device is either unplayable on
this system or connected at an incorrect
angle.
Cause
Connect a playable USB device.
Disconnect the USB device. Change the input source
to a device other than USB and back to USB. Then,
correctly connect a playable USB device to the CD
player.
TROUBLESHOOTING
Remedy
See
page
10
—
27
En