25
• Remove the screws (4 for each drive unit) and pull the
drive units out.
• Avoid missing the screws for reattaching.
* For replacement of hard disk drives, remove the hard
disk drives from the brackets respectively.
5. Make preparations for the hard disk drives.
• Discharge static electricity from your body before han-
dling the hard disk drives.
• Place the conductive bag in which the hard disk drive
has been put on a soft material such as a mat, and put
the hard disk drive with the board side facing down on
the bag to protect the drive from static electricity.
6. Secure the hard disk drives to the brackets respective-
ly.
• Use 4 sleeves and 4 dampers that are supplied for
each drive unit to secure the drives.
• Do not use an electric screwdriver for impact preven-
tion. (Tightening torque: 0.49 N·m {5 kgf·cm})
7. Set all the jumper connectors to the master side.
• Refer to the instruction manual attached to the hard
disk drive for details.
8. Mount the hard disk drives on the extension unit.
• Use the screws that had been removed in Step 4.
• Do not use an electric screwdriver for impact preven-
tion. (Tightening torque: 0.784 N·m {8 kgf·cm})
Important:
The identification numbers of the built-in hard disk dri-
ves are assigned as shown below. The following are the
relationship between slot numbers and hard disk drive
numbers.
Slot HDD #1 :
HDD1
Slot HDD #2 :
HDD2
Slot HDD #3 :
HDD3
Slot HDD #4 :
HDD4
Make sure to follow the mounting order of hard disk dri-
ves, HDD1 -> HDD2 -> HDD3 -> HDD4.
Failure to observe this disables the hard disk drives
because a digital disk recorder cannot identify the dri-
ves.
9. Connect the cables.
10. After completion of replacement, connect the power
plug to the outlet and turn on the power of the unit.
→
The disk configuration menu automatically appears
after starting up the unit.
Damper
Sleeve
HDD 2
HDD 1
HDD 4
HDD 3
Inside the front panel
