Chapter 6 chassis maintenance, Hot-swappable” power supply – Mobility Electronics PCI Expansion System P13RR-TEL User Manual
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M A G M A
Chapter 6 Chassis Maintenance 25
Chapter 6 Chassis Maintenance
Like all computer systems, you will need to perform some routine 
maintenance tasks. Some of these include making sure that the air 
vents in the chassis are clear of obstructions and that the cooling air 
from the fans flows freely. You will also need to check the foam filter 
behind the front panel to ensure it is clean, thus allowing for unrestricted 
air flow to the fans. You should always keep an eye on all cables to 
make sure they are not damaged and are securely connected. 
Occasionally, you should remove the chassis cover and check for loose 
cards, and remove any dust build-up. 
Always to remember to power down your computer and then the 
expansion system BEFORE you attempt to perform any maintenance 
tasks. 
In spite of regular performance of routine maintenance tasks, some 
computer systems can experience hardware failures. Fortunately, your 
investment in a P13RR-TEL provides you with the ability to easily repair 
the system in the event of component failure. 
Two of these components are field-replaceable: the cooling fans and 
the hot-swappable redundant power supply modules. 
“Hot-Swappable” Power Supply
The redundant power supply includes two 
hot-swappable modules that share the 
power load requirements during normal 
operations. Should one module fail for any 
reason, the power load will be shifted to the 
other module and sound an audible alarm. 
If a power supply fails, the monitor will 
display a message in the display window, 
sound an alarm, update the web-access-
page, and, if you have configured the 
SNMP monitoring for email alerts, it will 
also send you an email advising you of the 
power failure. 
To replace a failed power supply, simply 
remove the Phillips-head screw above the 
failed power supply module, grab the 
handle, and pull. Replace the failed module with a new one and turn on 
the power to the module using the power switch at the bottom of the 
