Checking / changing Read / Write attribute on the printer.
Solution
Read/write attribute
Selects whether to allow data to be written onto memory cards from a computer.
Make sure that the machine is turned on.
Press the <Setup> button.
Use the button to select [Device settings], then press the <OK> button. The Device settings screen is displayed.
Use the button to select [Device user settings], then press the <OK> button.
The above example shows Print settings selected.
Use the button to select [Read/write attribute] then press the <OK> button.
Use the button to select from the following options, then press the <OK> button.
Writable from USB PC
Writable from LAN PC
Not writable from PC
Note: If you set this setting to Writable from USB PC or Writable from LAN PC, you cannot print photos on a memory card using the operation panel of the machine. After you finish operation of the memory card dedicated drive, be sure to set it back to Not writable from PC. When you turn off the machine, Writable from USB PC or Writable from LAN PC will be canceled and the setting is returned to Not writable from PC when you turn on the machine next time.
button to select 
[Device settings], then press the <OK> button.
button to select [Device user settings], then press the <OK> button.