Replacing The Backup Battery - Siemens MOBILETT Plus Service Instructions Manual

Miscellaneous

Replacing the backup battery

The backup battery can be replaced without turning off the unit. Make sure that the board
does not short-circuit and that the soldering iron is not connected to main power while sol-
dering.
•
Read out the exposure counter, refer to the section "P16 - Show the exposure counter".
•
Read out the mAs limit, refer to the section "P15 - upper mAs limit".
•
Read out the kV step and limit, refer to the section "P14 - Number of kV steps and upper
kV limit".
•
Loosen the screws to the system upper cover and remove it.
•
Loosen the screws and remove the protection plate.
•
Locate the battery, refer to the wiring diagram, page 110.
•
To avoid damage to components or assemblies, ensure compliance with ESD
guidelines.
•
Remove the battery jumper.
•
Desolder the battery and connect the new battery with the soldering iron.
•
Reattach the battery jumper.
•
Reattach the protection plate.
•
Switch off the unit for 20 s.
Siemens-Elema AB
Solna, Sweden
Fig. 1
SPR8-215.898.01
Rev. 05 01.02
8
Page 1 of 6 MOBILETT Plus/ - E/ - M
SPS-UD
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Backup
battery
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