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4.4
Changing the Backup Battery
Battery Power
A backup battery (3.6 V lithium battery) powers the real-time clock even
Supply for
after the RI45 PII is switched off. In addition to the time of day, all the
Real-Time Clock
information about the RI45 PII system configuration is stored. If the backup
and Configuration
battery fails or is removed, all this data is lost.
Because the clock uses very little power and the lithium battery has a high
capacity, the battery can provide backup power for the real-time clock for
several years. Thus the battery rarely needs to be changed.
Battery too Low
If the battery voltage is too low, the current time and the configuration data
stored are lost.
Changing the
In this case, you must replace the backup battery. The battery is located
Battery
behind the power supply module on the mother board (see Figure 4-3).
To change the battery, proceed as follows:
1. Turn off the unit, unplug the power cable.
2. Open the unit as described in Section 4.1.
3. Now replace the backup battery, which is attached to the mother board by a
4. Fix the new battery to the mother board with a cable binder.
5. Close the unit.
Warning
!
Risk of severe personal injury or property damage, danger of release of
harmful substances.
There may be a danger of explosion if the battery is not handled properly.
Incorrect disposal of used batteries can cause the release of harmful
substances. Do not throw a new or discharged battery into an open fire. Do
not solder onto the cell container. Do not recharge the battery and do not
open the battery by force.
The correct lithium battery can only be ordered from Siemens (order no.:
W79084-E1003-B1). Return used lithium batteries to the manufacturer or
recycler or dispose of them as special waste according to local regulations.
Resetting SETUP
If you change the backup battery, you must reset the configuration of your
RI45 PII with the BIOS-SETUP program.
4.5
Closing the Unit
Closing the Unit
To close the unit, proceed as follows:
1. Put the cover on the back of the unit and slide it forwards.
2. Lift the cover slightly and attach it to the front panel.
3. Screw the cover together with both screws.
4. The machine is ready for operation again.
Product Information Bulletin RI45 PII
C79000-Z7076-C814-02
short length of cable.
Expanding the RI45 PII
4-9
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