Nortel Networks 400 4.0 Manual De Usuario

Chapter 24 Replacing data cards and processing hardware

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Partially remove the base function tray from the main unit. Do not crimp, stretch, or damage 
the cables or connectors. 

Remove the base function tray bezel. See 

. 

Remove the WAN card (if applicable). See 

. 

Disconnect the DS30 cables from the MSC. Do not crimp, stretch, or damage the cables or 
connectors.

Completely remove the base function tray from the main unit. See 

. 

10 Remove the media services card (see 

). 

11 Use your finger to carefully lift the battery out of the socket. For the location of the battery 

socket, refer to 

Figure 175   Removing the clock/calendar battery

Caution: Do not use any type of tool to remove the battery.

CMOS 
battery

The battery is located 
under the edge of the 
power supply