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Chapter 2: 7401-4xxx Product Overview 2-21
Operator Display
19889d
The 7401-4xxx has a 15-inch TFT (thin film transistor) 1024x760 with 65
K colors display.
LCD Adapter Board
The signals from the LCD header on the Processor Board are brought
to the LCD on a harness. Since there are multiple pin configurations
and connector types being used on the LCD, a small adapter board is
used to receive the LCD harness and map the signals into the correct
pin-out for the LCD panel. This board has a connector that plugs
directly into the LCD panel.
LCD Backlight Inverter Module
An Inverter Board supplies power for the LCD Backlight, which is a
separate module in the terminal. The inverter has a connector that
receives power, ground, and a Backlight dimming signal from the
Processor Board. The inverter generates the high voltage necessary to
start and run dual CCFL (cold-cathode fluorescent lamps) Backlights.