NCR 7455, Hardware User'S Manual

Page: 46 / 144

1-32 Chapter 1: Product Overview
Power Supply
The terminal uses an AC adapter for its power supply, concealed in the
terminal mounting. The supply is inaccessible when the terminal is in
the normal operation and mounting position to prevent tampering,
and is sealed to help protect against spills or other environmental
hazards.
Note: The power supply automatically senses the proper AC voltage;
therefore, only normal servicing access is required.
•
All power required to operate the base unit, PCMCIA option and
PCMCIA cards, speaker option, scanner option, and bus-powered
USB peripherals is provided by the power supply.
•
The Processor Board serves as the hub to distribute power to all
terminal functions. Cash drawers, VFD customer display, PS/2
keyboard, PCMCIA daughter board and slots, scanner (through
RS-232 port), USB, hard disk, and LCD all receive power through
their respective Processor Board connectors.
•
Printers requiring 24V are not supported by the 7455 power supply
but can be used if they are powered with an external power supply.
Note: The power available to peripherals depends on the
configuration of the base terminal and the power required by the
peripherals. Careful consideration of the power demands of the system
should be taken to ensure it does not exceed that provided by the 7455
power supply.