IBM R31 - Manual (Page 47)

Error
Code Message Meanings Comment
0250 System battery
is dead Replace
and run SETUP The CMOS clock
battery indicator
shows the
battery is dead.
Replace the
battery and run
Setup to
reconfigure the
system. Replace the
CMOS battery
and Run Setup
to reconfigure
the system.
0251 System CMOS
checksum
bad-default
configuration System CMOS
has been
corrupted or
modified
incorrectly,
perhaps by an
application
program that
changes data
stored in CMOS.
The BIOS
installed Default
Setup Values. If
you do not want
these values,
enter Setup and
enter your own
values. If the
error persists,
check the system
battery or contact
your dealer. Enter Setup to
configure the
system. If the
error persists,
check the
system battery.
0270 Real time clock
error Real-Time Clock
fails BIOS
hardware test.
May require
board repair. The mainboard
may need the
system date and
time.
0271 Check date and
time settings BIOS found date
or time out of
range and reset
the Real-Time
Clock. May
require setting
legal date
(1991–2099). Enter Setup to
reconfigure the
system date and
time.
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