IBM 4840 Service Guide - Page 48

Updating, flash, Power, interruption, during, update, procedure, Repairing, Real-time, clock, - xx3

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Control procedures August 3, 2006 Updating the flash BIOS To obtain the latest level of flash BIOS for the SurePOS 500 Models 5x3 and 544/564: 1. Insert a formatted diskette into the diskette drive of a PC with Internet access. 2. Access the IBM Retail Store Solutions Web site at: www.ibm.com/solutions/ retail/store/. 3. Select Support on the left side of the panel, then select IBM SurePOS 500/600 Series. 4. Next, select SurePOS 500-xx3 Downloads. 5. Download the update program to a temporary location on the PC's hard-disk drive. Run the self-extracting program and respond to the messages that display. This program writes the updates to the diskette. 6. Go into Setup and ensure that the diskette drive is in the boot list. Save any changes and exit Setup. 7. Switch OFF the power on the SurePOS 500 Models 5x3 and 544/564 and insert the diskette into a drive attached to the system. 8. Switch the system ON again. The system boots from the diskette, the flash BIOS update occurs. 9. Remove the diskette. The new BIOS update is on the system. Note: The flash utility saves and restores your CMOS setting. Power interruption during flash BIOS update procedure If power is interrupted during the flash BIOS update procedure, the BIOS could become corrupted. Should this event occur, the system boots automatically from a backup copy of BIOS. To repair the corrupt version of BIOS and return to using the normal BIOS, perform the steps to update the flash BIOS in "Updating the flash BIOS." Repairing the flash BIOS Two separate copies of Post/BIOS are maintained in separate flash modules. Should the primary copy become corrupt, the system automatically runs from the backup copy when rebooted. A POST message indicates when the backup copy is in use. When this happens, it is important to perform a Flash Update, in an attempt to repair the primary copy and preserve the backup functionality. If the primary is permanently damaged, the system runs normally, but without backup capability for the BIOS, and the POST message appears at each bootup. Real-time clock and CMOS The real-time clock is a low-power clock that provides a time-of-day clock and a calendar. The clock settings are maintained by the battery when the power cord is removed. See "System-board battery - removing and replacing" on page 67 for the location of the battery. Restoring the default CMOS settings To restore CMOS default settings, select Load Optimized Settings from the main menu. 22

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Updating
the
flash
BIOS
To
obtain
the
latest
level
of
flash
BIOS
for
the
SurePOS
500
Models
5x3
and
544/564:
1.
Insert
a
formatted
diskette
into
the
diskette
drive
of
a
PC
with
Internet
access
.
2.
Access
the
IBM
Retail
Store
Solutions
Web
site
at:
www.ibm.com/solutions/
retail/store/.
3.
Select
Support
on
the
left
side
of
the
panel,
then
select
IBM
SurePOS
500/600
Series
.
4.
Next,
select
SurePOS
500-xx3
Downloads
.
5.
Download
the
update
program
to
a
temporary
location
on
the
PC’s
hard-disk
drive.
Run
the
self-extracting
program
and
respond
to
the
messages
that
display.
This
program
writes
the
updates
to
the
diskette.
6.
Go
into
Setup
and
ensure
that
the
diskette
drive
is
in
the
boot
list.
Save
any
changes
and
exit
Setup.
7.
Switch
OFF
the
power
on
the
SurePOS
500
Models
5x3
and
544/564
and
insert
the
diskette
into
a
drive
attached
to
the
system.
8.
Switch
the
system
ON
again.
The
system
boots
from
the
diskette,
the
flash
BIOS
update
occurs.
9.
Remove
the
diskette.
The
new
BIOS
update
is
on
the
system.
Note:
The
flash
utility
saves
and
restores
your
CMOS
setting.
Power
interruption
during
flash
BIOS
update
procedure
If
power
is
interrupted
during
the
flash
BIOS
update
procedure,
the
BIOS
could
become
corrupted.
Should
this
event
occur,
the
system
boots
automatically
from
a
backup
copy
of
BIOS.
To
repair
the
corrupt
version
of
BIOS
and
return
to
using
the
normal
BIOS,
perform
the
steps
to
update
the
flash
BIOS
in
“Updating
the
flash
BIOS.”
Repairing
the
flash
BIOS
Two
separate
copies
of
Post/BIOS
are
maintained
in
separate
flash
modules.
Should
the
primary
copy
become
corrupt,
the
system
automatically
runs
from
the
backup
copy
when
rebooted.
A
POST
message
indicates
when
the
backup
copy
is
in
use.
When
this
happens,
it
is
important
to
perform
a
Flash
Update,
in
an
attempt
to
repair
the
primary
copy
and
preserve
the
backup
functionality.
If
the
primary
is
permanently
damaged,
the
system
runs
normally,
but
without
backup
capability
for
the
BIOS,
and
the
POST
message
appears
at
each
bootup.
Real-time
clock
and
CMOS
The
real-time
clock
is
a
low-power
clock
that
provides
a
time-of-day
clock
and
a
calendar.
The
clock
settings
are
maintained
by
the
battery
when
the
power
cord
is
removed.
See
“System-board
battery
removing
and
replacing”
on
page
67
for
the
location
of
the
battery.
Restoring
the
default
CMOS
settings
To
restore
CMOS
default
settings,
select
Load
Optimized
Settings
from
the
main
menu.
Control
procedures
August
3,
2006
22