BT Versatility User Manual download pdf (Page 45)

BT Versatility

Installation and maintenance Manual

Replacing the CCU MDF

This PCB is NOT hot swappable. The System must be powered down to change

this board

ESD precautions must be made when replacing this board. Connect to the ESD

pillar on the CCU MDF before removing the CCU cover

The procedure to be used when replacing the CCU MDF unit is:

1. Power the system down by unplugging it at the mains.

2. If a battery is installed turn off the BBU switch to disconnect the battery.

3. Remove any voice or network modules installed.

4. Remove the MDF Cabling making sure to tag the cabling so they can be readily reinstalled

5. Open the CCU main cover by opening the four-quarter turn screws indicated in the first diagram

below.

6. Remove the 008 PCB

7. Remove the retaining screw in the MDF PCB

8. Remove the MDF PCB

9. Reverse the above procedure to install a new MDF PCB

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BT Versatility User Manual Page 45