Yamaha PianoCraft MCR-940 Owner's Manual page 53

Error message
This USB memory is Occurs if there is a formatting error.
not formatted properly.
Occurs if the USB memory is not formatted with
Please format the
FAT 32/16.
memory in USB
memory management.
The Connected USB
Occurs if USB memory not compliant with USB 2.0
Memory cannot be High Speed (480Mbit/s) is used (i.e. USB 1.0/USB
used. It should be 1.1).
compliant with USB 2.0
Possible Error
TROUBLESHOOTING
Remedy
Format the USB memory again.
Format the USB memory with your PC.
Connect USB 2.0 High Speed (480Mbit/s) compliant
USB memory.
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