External Monitors; Design Overview; Internal Boards - Compaq Armada 1500C series Service Manual

1.3.3 External Battery Charger
The External Battery charger has the following features:
Two battery charge slots
Accepts both NiMH and Li-ion modular batteries
Charges one battery in 3 hours or less
1.3.4 External Keyboards and Pointing Devices
Supports Compaq or Compaq-compatible PS/2 keyboards and pointing devices

1.3.5 External Monitors

The computer supports VGA Monitors up to 1280 x 1024.

1.4 Design Overview

This section presents a design overview of the computer. The overview is limited to
field replaceable parts. All replacement parts are listed in Chapter 3.
1.4.1 System Unit
The computer is a traditional clamshell design with a display unit attached to a system
unit. The computer opens to reveal a backlit LCD display and a full-sized keyboard.
The display is designed for a continuously adjustable tilt angle.

1.4.2 Internal Boards

The system electronics are integrated on seven printed circuit assemblies: the LED
status board, I/O fixture connector, audio board, system board, modem board, and the
DC-DC converter board. An optional memory board is available that expands the
system memory up to 160 MB.
The LED status board connects the system board to the display cables and supports
the status LEDs.
The DC-DC converter board creates the system voltages (3.3v and 5.0v) from the
battery or from the 14 VDC external power supply output.
The system board integrates the processor, memory, local bus video adapter,
PCMCIA/CardBus adapter, and audio controller.
Processor
The processor located on the system board is a 266- or 300-MHz Intel Celeron
processor with 128-Kbyte embedded cache.
Memory
Base memory is 32 MB with, 16, 32, 64, or 128 MB of optional expansion memory.
Base memory is onboard memory built into the system board. Expansion memory
consists of one memory expansion board available as a user-installable option.
1-4 Computer Product Description