LXE MX3X, Reference Manual

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Battery Hot-Swapping 55
E-EQ-MX3XRG-A MX3X Reference Guide
Battery Hot-Swapping
When the main battery power level is low, the MX3X will signal the user with a warning dialog
box on the display and the BATT M LED illuminates red. The Batt-M LED is illuminated until
the main battery is replaced, the battery completely depletes, external power is applied to the
MX3X using the power jack, or the MX3X is placed in a powered cradle.
You can replace the main battery by simply removing the discharged battery and installing a fully
charged battery within a five minute time limit (or before the backup battery depletes).
When the Main Battery is removed, the MX3X automatically transitions to the Critical Suspend
state. During Critical Suspend, the MX3X’s backup battery will continue to power the unit for at
least five minutes. Though data is retained, the MX3X cannot be used until a fully charged main
battery pack is installed. After installing the fully charged battery, the MX3X automatically
transitions to the Suspend state. To resume from the Suspend state, tap the Power button. Full
operational recovery from Suspend can take several seconds while the radio (if installed) is
reestablishing an RF link.
If the backup battery depletes before a fully charged main battery can be inserted, the MX3X will
turn OFF and the Power key must be used after the main battery pack is installed.
All configuration data is saved to flash memory before the computer powers off.
Low Battery Warning
It is recommended that the Main Battery Pack be removed and replaced when it's energy depletes.
When the Low Battery Warning appears do an orderly shut down of the MX3X, minimizing the
operation of any installed devices and insuring any information is saved that should be.
When the unit is in an ON state, a low battery warning dialog box appears on the display and the
Batt-M LED illuminates red.
Note: Once you receive the Low Battery Warning, you have approximately 5 minutes to
perform an orderly shutdown and replace the main battery pack before the unit powers
off. The Low Battery Warning will transition to Critical Suspend before the computer
powers off.
Critical Suspend State
The Critical Suspend state or mode can only be entered because of a Main Battery Power failure.
A Main Battery Power failure can occur because the battery’s energy has been depleted or the
battery has been removed.
When the MX3X is in the Critical Suspend state the main battery LED illuminates, the System
LED blinks red, all peripherals are shut down, the CPU clock is stopped, and power is removed
from the PCMCIA card(s). The MX3X is saving the state prior to the backup battery failing and
cannot be used.
If a new fully charged main battery is installed before the Backup Battery fully depletes the
MX3X will transition to the Suspend state. To resume operation tap the Power key.