Backplane - Aastra OpenCom 510 User Manual

Installation
9. Observe the module LEDs during start-up of the OpenCom 510. Information
on indicators can be found in the chapter Modules starting on page 59.
4.5

Backplane

The BPV+1-12 backplane of the OpenCom 510 supplies the modules installed in
the 1-12 frame with the required power and system signals. The backplane is also
used to provide access to the PCM highway (for transmitting utility data), the LAN
(for exchanging signalling data) and to the system clock circuits.
The backplane has vertically arranged sockets for the backplane plugs of the
modules:
■
The MPS+1-AC power supply units and the MC+1-3 central control module are
each connected by means of a 96-pin spring contact strip.
■
The interface modules are each connected by means of a 48-pin spring contact
strip.
The backplane also carries the system serial number (etched into the backplane
chip).
Should you need to exchange the backplane, proceed as follows:
DANGER!
1. Unplug all of the mains cables of the OpenCom 510 to disconnect the system
from the mains supply.
Refer to Notes on Disconnecting the Mains Supply starting on page 28.
2. Uninstall all modules and power supply units from the 1-12 frame (see
Installing Modules starting on page 27).
3. Remove the screws on the backplane (see arrows in the illustration
OpenCom 510: Backplane screws). Carefully remove the backplane from the 1-
12 frame, pulling it out of the frame towards the front.
Hazardous voltages inside the device!
Backplane
35