Power Supply Module - AT&T MERLIN LEGEND Release 3.1 System Manager's Manual

Control Unit
Feature Upgrade Memory Card. Orange label with black bars; entitled
Forced Installation . To upgrade your system to the latest release.
Maintenance Upgrade Memory Card. Orange label; entitled Upgrade
Card . To fix problems in the system.
Translation Memory Card. White label; entitled Translation Card . To
back up and restore your system programming as an alternative to using
System Programming and Maintenance (SPM). These procedures are
faster when you use the PCMCIA card.

Power Supply Module

The power supply module (Figure 3 2) provides power to the carrier, to each
telephone, and to most adjuncts (some adjuncts, such as fax machines, come
with their own power supplies and don't rely on the system). Each carrier
requires its own power supply module, installed in the carrier's leftmost slot.
In some systems, you need extra power supplies to support your system
components as described in "Power-Related Hardware," later in this chapter.
Figure 3–2. Power Supply Module
3–4
System Components
Power Indicator (Green Light)
POWER
Auxillary Power Input Jack
CAUTION
ON On/Off Switch
OFF
TURN OFF
POWER BEFORE
Power Connection
INSERTING OR
REMOVING
MODULES
Grounding Screw