Computer Design Overview
This section presents a brief design overview of the computer. See Chapter
3 for an overview of the system unit and the display assembly from the
perspective of replacing components in the field. All replacement parts
are listed in Chapter 3, and removal and replacement procedures are
presented in Chapter 5.
The computer is a traditional clam shell design with a display unit and a
system unit. The computer opens to reveal a backlighted LCD display and a
full-sized keyboard. The display is designed to open to 135o.
System Unit
The major components of the system unit are: the CPU cover, keyboard,
system board with processor, hard drive, diskette drive, memory expansion
board, battery pack and compartment, integrated trackball assembly,
Real-Time Clock battery, and PC Card (PCMCIA) ejector rails and
components.
Display Unit
The standard video subsystem consists of one of the following internal LCD
displays:
o 10.4-inch VGA CSTN display panel
o 10.4-inch VGA CTFT display panel
In addition, the video subsystem consists of:
o Cirrus Viking PCI Bus Graphics Accelerator with 1 MB EDO (two 70-ns
256kx 16) VRAM
o An inverter to supply AC power to the LCD backlight system
o A standard external VGA connector for use with CRTs and other VGA
compatible displays; also supported: external SVGA (maximum resolution
1024 x 768 x 256)
o A flex cable connecting the system board to the LCD display and the
inverter
o 48 KB of video ROM integrated into system ROM
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