SECTION 2 LITHIUM BATTERY REPLACEMENT2.1 GeneralThe Lithium Battery (CR2032) is installed on the CPU Card in Main KSU. It provides the battery-backup of the RAM memory for approximately 36 months. When the battery power becomes low, thesystem will display a "Warning Message" to the assigned Display Multiline Telephone as below.11-10 WED 1:49PMLow battery!Menu Dir VM:00 CL:00Figure 4-5 Warning of Low Battery2.2 Lithium Battery SpecificationBefore replacing the Lithium battery, make sure which type of Lithium battery is required and preparethe new Lithium battery. (CR2032)NEC recommends that a backup of the customer data is performed beforepowering off the system (either PCPro file or CF card backup) in order toreplace the backup battery.• Risk of explosion if the battery is replaced by an incorrect type.• Dispose of used batteries as instructed by the manufacturer of the battery.• If Expansion KSU(s) are installed, turn the power on/off in the order ofExpansion 2 KSU, Expansion 1 KSU and then Main KSU.SL1100 ISSUE 6.04-4 Maintenance
