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Oki  Data  CONFIDENTIAL
7.  TROUBLESHOOTING PROCEDURE
IDE
bus
IDE
bus
CU board HDD
Conversion
board
DPK-A3
7.8.1  Data protection kit-A3 (DPK-A3) overview
Purpose:
By encrypting data to be stored in HDD, data is protected from eavesdropping even when 
HDD is stolen. 
Method:
The conversion board in which encryption chip is installed is inserted in between the CU 
board and HDD.
Connected chart:
7.8  Data protection kit-A3
Assembled state of Data protection kit-A3
Shape of metal plate 
is different from 
HDD unit of C5900. 
Thickness and others 
are different. 
HDD in which board is installed
<Top panel>
<Rear panel>
Connector for 
connecting HDD
Sealed encryption chip
Connector for 
connecting HDD
Connector to which CU is 
going to be connected