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SIMATIC 545/555/575 System Manual
Installing 505 System Hardware
Follow these steps to replace the battery:
1. Maintain power to the CPU.
2. Open the battery cover.
3. Pull out the old battery and disconnect the battery connectors.
4. Connect the battery connectors to the replacement battery.
5. Place the new battery in the battery compartment, making sure the
connecting wires are fully inserted through the holes in the
compartment, and close the cover.
6. Check the BATT GOOD indicator on the CPU to make sure that it
lights back up to confirm that the replacement battery is good.
Front Bezel
Battery
Cover
Battery
Battery
Connectors
Figure 3-10 Replacing the Battery in –1105 and –1106 CPU Modules
Replacing the
Battery in
–1105/–1106 CPUs
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