User manual
 G-P6019-TM001  
ST Electronics (Info-Security)    ISSUE A   
  19 
11 Troubleshooting 
In the event that your DCM300 does not function properly, please refer to the following 
checklist to find out what the problem is. If further technical support is required, please 
contact your DiskCrypt Mobile reseller or DigiSAFE Technical Support at 
DigiSAFE Technical Support 
Email: services@digisafe.com
Problem  Query  Possible reason and remedy 
The keypad is 
inactive 
Is the unit’s backlight 
on? 
Ensure that the USB connector is firmly 
connected to your computer’s USB port. 
If you are using Firewire, ensure that the 
Firewire connector is firmly connected to 
the computer’s Firewire port. 
  Has a smart card been 
inserted? 
Insert a valid smart card into the 
DCM300. 
  Is the Error LED 
lighted? 
Ensure that a valid card is inserted, and 
that the card orientation is correct, by 
inserting the card with the contacts 
facing down. 
Authentication 
fails 
Is the Error LED 
lighted? 
Ensure that a valid card is inserted, and 
that the card orientation is correct, by 
inserting the card with the contacts 
facing down. 
  Is the Error LED 
blinking? 
A wrong password has been entered. 
Press the Esc button to restart the 
authentication process. 
The drive is not
recognized. 
Does the Status LED 
stay on all the time? 
Ensure that the USB connector is firmly 
connected to your computer’s USB port. 
If you are using Firewire, ensure that the 
Firewire connector is firmly connected to 
the computer’s Firewire port. 
  Does the drive’s icon 
appear on the 
computer? 
Check for the drive icon in your 
operating system. Ensure that the 
DCM300 is not connected to a bus-
powered USB hub or a USB extension 
cable. If this still doesn’t work, an extra 
power adaptor might be needed. 
  Is the hard drive new?
A new drive that has not been previously 
partitioned and formatted will need to be 
done so. Refer to 8.1 Partitioning and 
formatting your hard drive for more 
information. 










