Technical information

LS PRO OWNER'S HANDBOOK 8/3
Maintaining and Transporting
Chapter 8
Recharging the configuration battery
The computer keeps a record of its current hardware
configuration in a CMOS memory chip which is sustained by a
small battery. The on-board security system, if enabled, also
uses CMOS memory to store its security configuration.
Normally, this battery is kept charged by the AC power supply.
If the computer is disconnected from the AC power supply
for more than three months, the battery will become exhausted
and the configuration data will be lost. When the computer is
next turned on, several error messages will appear including:
RTC Power Failure
Please Reconfigure and Retry
Before doing anything, make sure you know the computer’s
unique System Identification Number (SIN). The SIN is normally
printed on a label stuck onto the motherboard, but this label
may have been removed as a security precaution. If the SIN
label is missing, ask the person responsible for administering
the security system for help.
1. You may be asked to enter the SIN. Type the SIN and
press the ENTER key.
The BIOS Setup utility starts automatically.
2. Use the BIOS Setup utility to reconfigure the hardware
as described in Chapter 3.
3. If the security system was enabled, it too will have to
be reconfigured and re-enabled as described in
Chapter 6.
4. Leave the computer connected to the power supply
for 24 hours to recharge the battery.
If the battery fails completely, and will not recharge, ask your
supplier or an authorized maintainer for assistance.