BT Versatility - Manual (Page 41)

BT Versatility
Installation and maintenance Manual
40
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 the cover.
7. Replace any voice or network modules.
8. Replace the cover and power the system up.