Table 2-1: Backplane Features - PictureTel Concorde 4500 Servicing Manual

UNDERSTANDING THE ELECTRONICS MODULE
2-2

Table 2-1: Backplane Features

Feature
96-pin DIN 42612
type-C
Euroconnectors
48-pin DIN 41612
type-F Euroconnector
Euroconnector
DC power
64-pin right-angle
female DIN
connector
Test pins
The following illustration shows the voltage test points on the
Backplane. Using a voltage test meter, each test point can be
individually tested to see whether the board it relates to is
functioning properly.
Description
Connects each of eight system boards
to the Backplane. Female connectors are
located on the backplane; male
connectors are on each board, which
connect perpendicular to the
backplane.
Connects the power and ground
connections directly to the Backplane.
Carries the power rail sense wires and
the TTL level signal that together
activate the courtesy outlet.
Through connector pins on the
Backplane, DC power is supplied to the
fans.
Enables a parallel connection between
the Backplane and the software
cartridge.
Each of the power supply voltages is
monitored to provide diagnostic test
results. See Figure 2-1.