2 - 24 Chapter 2Chapter 2 - Blade Installation and Startup2.4.1.3 CCPU Installation (Figure 2-5 - Figure 2-6)1. Install the battery on the CCPU. The polarity “+” symbol must be on top.2. Install the Voice Mail, Memory, and/or VoIP daughter boards if required.3. After being certain that the power supply is shut off, slide the CCPU into the CCPU slot in theControlling chassis.● Note that the blades must be inserted into the chassis with the top of the blade up,otherwise the connection to the backplane will not be made.Figure 2-5: BATTERY INSTALLATIONFigure 2-6: INSTALLING BLADES• The power to the chassis must be off when installing or removingthis blade.• Do not remove/insert the optional CCPU daughter boards (VMDB,MEMDB, VOIPDB) or voice mail flash card while the system power is on.BatteryBattery Socket