Replacing Faulty Pcbs; Replacing The 008 Extension Board - BT Versatility Installation And Maintenance Manual

BT Versatility
Installation and Maintenance Manual

Replacing Faulty PCBs

Replacing the 008 extension board

If a fault occurs on the first eight extensions the 008 extension PCB must be replaced.
This PCB is NOT hot swappable. The System must be powered down to
change this board.
ESD precautions must be taken when replacing this board. Connect to
the ESD pillar on the CCU MDF before removing the CCU cover.
The procedure in replacing the 008 PCB 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. Open the CCU main cover by releasing the four 'quarter turn' screws indicated in the
first diagram below.
5. Remove and replace the 008 card as indicated in the second diagram.
6. Replace any voice or network modules.
7. Replace the cover and power the system up.
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