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. |
| |
11 | Mono microphone jack | Connects a powered electric condenser |
|
| microphone. |
12 | Volume control | Controls | volume to the | ||
|
| speakers | or | to external | speakers or |
|
| headphones connected to | the computer | ||
|
| or MultiBay | Expansion Base. | ||
13 | MultiBay device release | Releases a drive or battery pack from |
|
| the MultiBay. |
14 | Ventilation exhaust | Exhaust vent for | proper airflow to | |
|
| help prevent | the | computer from |
|
| overheating. |
|
|
15 | Infrared port | Transfers data to another computer or |
|
| external device that accepts IrDA |
|
| format. |
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)
oVGA controller (Cirrus
o Keyboard controller (Intel 80C51SL)
o PCMCIA controller (Cirrus 6722)