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10 Docking sensor Access to a microswitch that initiates
the docking scenario when the computer
is being docked. Also serves as a
guide for the MPEG Adapter.
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11 Mono microphone jack Connects a powered electric condenser
microphone.
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12 Volume control Controls volume to the built-in
speakers or to external speakers or
headphones connected to the computer
or MultiBay Expansion Base.
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13 MultiBay device release Releases a drive or battery pack from
the MultiBay.
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14 Ventilation exhaust Exhaust vent for proper airflow to
help prevent the computer from
overheating.
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15 Infrared port Transfers data to another computer or
external device that accepts IrDA
format.
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16 Security slot Provision for an optional security
cable lock to be attached to the
computer.
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Chapter 1.4 Design Overview - Computer
This section presents a design overview of the computer. The discussion is
limited to the field replaceable parts. All replaceable parts are
identified in Chapter 3, and removal/replacement procedures are presented
in Chapter 5.
The computer is a traditional clamshell design with a display unit and
system unit. The computer opens to reveal a backlighted LCD display and
keyboard. The display is designed for a continuously adjustable tilt
angle. The system unit houses the system board, processor board, power
board, keyboard, I/O ports, operator controls and indicators, mass storage
device bays, and battery bay.
The main components of the system unit include the following:
o Processor (Intel Mobile Pentium 75 MHz, 90MHz, 100MHz, 120MHz, 133mhz,
or 150 MHz)
o System controller (OPTi 556/557/558N, OPTi 602A)
o VGA controller (Cirrus CL-GD754x)
o Keyboard controller (Intel 80C51SL)
o PCMCIA controller (Cirrus 6722)