Toshiba PORTEGE M400 - Manual (Page 137)

User’s Manual 6-7
Power and Power-Up Modes
Real Time Clock (RTC) battery
The Real Time Clock (RTC) battery provides power for the internal real
time clock and calendar. It also maintains the system configuration.
If the RTC battery becomes completely discharged, the system loses this
data and the real time clock and calendar stop working. The following
message appears when you turn on the power:
S
**** RTC battery is low or CMOS checksum is
inconsistent ****
Press [F1] key to set Date/Time.
You can change the Real Time Clock settings by pressing the F1 key. Refer
to Chapter 9 Troubleshooting , for details.
Care and use of the battery pack
The battery pack is a vital component of portable computing. Taking proper
care of it will help ensure longer operating time on battery power as well as
a longer life for your battery pack. Follow the instructions in this section
carefully to ensure safe operation and maximum performance.
Safety precautions
Mishandling of battery packs can cause death, serious injury or property
damage. Carefully observe the following advisories:
Warning: Indicates a potentially hazardous situation, which could result in
death or serious injury, if you do not follow instructions.
Caution: Indicates a potentially hazardous situation, which if not avoided,
may result in moderate or minor injury or property damage.
Note: Provides important information.
Warning
1. Never attempt to dispose of a battery pack by burning or by throwing it
into a fire, and never allow exposure to a heating apparatus (e.g.,
microwave oven). Heat can cause a battery pack to explode and
possibly cause serious injury.
2. Never attempt to disassemble, tamper with or repair a battery pack. The
battery pack could overheat and ignite. Leakage of the caustic alkaline
solution or other electrolytic substances could cause fire, possibly
resulting in death or serious injury.
The computer’s RTC battery is a Ni-MH battery and should be replaced
only by your dealer or by a TOSHIBA service representative. The battery
can explode if not properly replaced, used, handled or disposed of.
Dispose of the battery as required by local ordinances or regulations.