6.MAINTENANCE SUPPLIES MAINTENANCE B-64223EN/01
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6.1 METHOD OF EXCHANGING A BATTERY
CAUTION
The time from disconnecting the cable of old
battery to connecting the cable of new battery
should be shorter than 5 minutes.
BIOS settings will be not erased when bellow
procedures are done correctly.
But if following message are displayed at
power-on, BIOS settings may be erased.
“251: System CMOS checksum bad – Default
configuration used.” & “Press <F2> to enter
SETUP”
In this case default BIOS settings are loaded, then
BIOS setting will start.
If BIOS settings were changed from default setting
before this message is displayed, change as same
settings.
Usually default settings are used.
(1) Turn on PANEL i for 5 seconds or more, then turn off. Take off
PANEL i from attached panel to work from rear side.
(2) Pull out the connector of the lithium battery, then remove the
battery from the holder.
(3) Connect the new battery connector (BAT1) until five minutes,
put the new battery in the holder.
(4) Mount PANEL i again.
(5) Turn on the power, then confirm that BIOS parameters have not
been erased (confirm that error message is not displayed).