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Chapter 4 Working Inside Your System
Back-up Battery
The lithium battery on the system board powers the real-time clock (RTC)
for up to 10 years in the absence of power. The RTC contains 256 bytes of
general purpose RAM that stores the system BIOS configuration
information, clock registers, and general purpose control registers. When
the battery starts to weaken, it loses voltage, and the system settings stored
in CMOS RAM in the RTC (for example, the date and time) may be wrong.
Contact your sales representative or dealer for a list of approved
replacement devices and available service.
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WARNING
If the system has been running, any installed processor
and heat sink on the processor board(s) will be hot. To
avoid the possibility of a burn, be careful when removing
or installing system board components that are located
near processors.
The following warning and translations are required by specific certifying
agencies to be printed immediately adjacent to the procedure for removing
the real-time clock.
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CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the equipment manufacturer. Discard
used battery according to manufacturer's instructions.
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ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat og
type. Levér det brugte batteri tilbage til leverandøren.
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ADVARSEL
Lithiumbatteri - Eksplosjonsfare. Ved utskifting benyttes
kun batteri som anbefalt av apparatfabrikanten. Brukt
batteri returneres apparatleverandøren.
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VARNING
Explosionsfara vid felaktigt batteribyte. Använd samma
batterityp eller en ekvivalent typ som rekommenderas av
apparattillverkaren. Kassera använt batteri enligt
fabrikantens instruktion.