5.9.3 Replacement of Backup Battery
The procedure for replacing the backup battery is as follows.
Procedure
1. Supply power to the control unit for more than five minutes.
Charge the built-in capacitor to retain the contents of the memory during the replacement of the
battery.
2. Turn off the power supply.
3. Remove the battery cover using a tool such as a screwdriver.
4. Remove the used battery.
5. Install a new battery within two minutes after turning off the power.
Place the battery to fit into the guide section of the control unit and connect the connector.
6. Install the battery cover and expansion cover.
Note:
- If the power is not sufficiently supplied or it takes too much time to replace the battery, retained memory
data may be lost.
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