Compaq 4125D Personal Computer User Manual


 
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1-18 Product Description
1.8 Design Overview - Computer
This section presents a design overview of the 4100 and 4200 Families. The overview
is limited to field replaceable parts. All replacement parts are listed in Chapter 3.
Removal and replacement procedures are presented in Chapter 5.
The computer is a traditional clamshell design with a display unit attached to a system
unit. The computer opens to reveal a backlighted LCD display and a full-sized
keyboard. The display is designed for a continuously adjustable tilt angle. The system
unit houses the keyboard, I/O ports, operator controls and indicators, and DualBay
devices.
1.8.1 System Unit
The system unit contains the following field-replaceable parts:
System board
Processor board
Display assembly
CPU/keyboard cover
Internal microphone
Optional memory expansion boards
Lithium Real Time clock battery
Hard drive
Diskette drive
Handle
Pointing device
CPU base cover
PCMCIA assembly
1.8.2 System Board
The Compaq Armada system electronics are integrated on two printed circuit
assemblies; the system board and the processor board. The 4100 system boards are not
compatible with the 4200 Family system boards. Similarly, the 4200 system boards are
not compatible with the 4100 Family.