VLS9200 user guide (BW402-10009, August 2012)

Warnings and Cautions
Before removing the node access panel, be sure that you understand the following warnings and
cautions.
WARNING! To reduce the risk of electric shock or damage to the equipment:
• Do not disable the AC power cord grounding plug. The grounding plug is an important safety
feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
• Unplug the power cord from each power supply to disconnect power to the equipment.
WARNING! To reduce the risk of personal injury from hot surfaces, allow the drives and the
internal system components to cool before touching them.
CAUTION: Do not operate the node for long periods without the access panel. Operating the
node without the access panel results in improper airflow and improper cooling that can lead to
thermal damage.
Preparation Procedures
To access some components and perform certain replacement procedures, you must perform one
or more of the following procedures:
• Extend the node from the rack. See Extending a VLS Node from the Rack.
If you are performing service procedures in an HP, Compaq branded, telco, or third-party
rack cabinet, use the locking feature of the rack rails to support the node and gain access to
internal components.
For more information about telco rack solutions, see the RackSolutions.com web site (http://
www.racksolutions.com/hp).
• If you must remove a non-hot-plug component from the node, power off the system. See
Powering Off the System.
• Remove the node from the rack. See Removing a VLS Node from the Rack.
• Remove the node access panel. See Removing the VLS Node Access Panel.
If you must remove a component located inside the node, remove the access panel.
Extending a VLS Node from the Rack
WARNING! To reduce the risk of personal injury or equipment damage, be sure that the rack is
adequately stabilized before extending a node from the rack.
WARNING! Be careful when pressing the rail-release levers and sliding the component into or
out of the rack. The sliding rails could pinch your fingertips.
To extend a node from the rack:
1. Loosen the thumbscrews that secure the node faceplate to the front of the rack.
2. Extend the node on the rack rails until the node rail-release latches engage.
3. After performing the replacement procedure, slide the node back into the rack:
a. Press the node rail-release latches and slide the node fully into the rack.
b. Secure the node by tightening the thumbscrews.
196 Component Replacement