1-29
Cisco Flex 7500 Series Wireless Controller Installation Guide
Chapter 1 Cisco Flex 7500 Series Wireless Controller Installation Guide
Preventing ESD Damage
Preventing ESD Damage
Electrostatic discharge (ESD) damage occurs when electronic cards or components are improperly
handled and can result in complete or intermittent failures.
Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Connect
the strap to any unpainted surface on the chassis
Caution
Periodically check the resistance value of the antistatic strap. The measurement should be between 1 and
10 megohms (Mohms).
Replacing a Failed Hot-Swap Hard Disk Drive
To replace a 2.5-inch hot-swap SAS hard disk drive, complete the following steps.
You can order replacement hard disk drives from Cisco. The replacement part PID is
AIR-SRVR-146GB-HD=.
Drive-tray
assembly
Drive handle
255129
Step 1
Read the safety information in
General Warnings, Regulatory and Safety, page 1-4
.
Step 2
Touch the static-protective package that contains the drive to any unpainted metal surface on the
controller; then, remove the drive from the package and place it on a static-protective surface.
Step 3
Ensure that the drive you are replacing has failed before pulling it out of the drive slot. Press on the tray
handle to unlock the drive. Pull on the tray handle to remove the drive.
Step 4
Install the hard disk drive in the drive bay:
a.
Make sure that the tray handle is in the open (unlocked) position.
b.
Align the drive assembly with the guide rails in the bay.
c.
Gently push the drive assembly into the bay until the drive stops.
d.
Rotate the tray handle to the closed (locked) position.
