Compaq Armada 1100 Armada 1100 Family of Personal Computers Maintenance and Se - Page 48

System Unit Module Overview

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System Unit Module Overview The system unit module (Figure 3-2) contains the following major components: o Hard drive - The hard drive mounts to the system chassis with a hard drive bracket and connects directly to the system board with no intervening cables. The hard drive bracket attaches to the hard drive with four screws. The drive is protected by an insulator between the system board and the drive. o Memory expansion board - System memory can be upgraded with an optional memory expansion board. An expansion board is added or replaced from the bottom of the computer through the memory compartment cover. The memory expansion board connects directly to the system board with one connector. o Battery pack - The nickel metal hydride battery pack is accessed through the battery compartment. o Integrated trackball assembly - The optical trackball is centrally located at the bottom of the keyboard assembly. The assembly consists of the trackball, retaining ring, and connector. The trackball assembly connects directly to the system board and is secured by two screws. o System board with processor - The system board is mounted directly to the system chassis. All removable components connected to the system board, except for the PC Card rails, EMI clip, and heatspreader must be removed prior to removing the system board. The processor is soldered to the system board and is not removable. It is covered by a heatspreader designed to dissipate heat generated by the processor. There is a bottom heatsink on the chassis, beneath the system board and the processor. A spare parts kit containing a replacement system board comes with the processor and heatspreader built on it. A chassis spare parts kit includes the bottom heatsink. o PC Card rails - The PC Card rails are replaceable and are secured by two screws from the bottom of the system board and a clip on top of the rails. The header attaches directly to the system board and cannot be removed. The top and bottom PC Card ejection levers are replaceable. o Real-Time Clock Battery - The battery is located in the left corner at the rear of the computer. o Diskette drive - The diskette drive attaches to the system board by a bracket and three screws; the bracket also attaches to the heatspreader with two screws. The drive is connected by a diskette drive cable and LIF connector. The bracket attaches to the drive with four screws. The drive is protected by an insulator between the system board and the drive. The memory expansion board and battery pack are accessed from the bottom of the computer. To service the remaining system unit module components, the keyboard assembly must be removed. A complete list of replaceable parts is included in Table 3-1.

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System Unit Module Overview
The system unit module (Figure 3-2) contains the following major
components:
o Hard drive - The hard drive mounts to the system chassis with a hard
drive bracket and connects directly to the system board with no
intervening cables. The hard drive bracket attaches to the hard drive
with four screws. The drive is protected by an insulator between the
system board and the drive.
o Memory expansion board - System memory can be upgraded with an optional
memory expansion board. An expansion board is added or replaced from the
bottom of the computer through the memory compartment cover. The memory
expansion board connects directly to the system board with one
connector.
o Battery pack - The nickel metal hydride battery pack is accessed through
the battery compartment.
o Integrated trackball assembly - The optical trackball is centrally
located at the bottom of the keyboard assembly. The assembly consists of
the trackball, retaining ring, and connector. The trackball assembly
connects directly to the system board and is secured by two screws.
o System board with processor - The system board is mounted directly to
the system chassis. All removable components connected to the system
board, except for the PC Card rails, EMI clip, and heatspreader must be
removed prior to removing the system board. The processor is soldered to
the system board and is not removable. It is covered by a heatspreader
designed to dissipate heat generated by the processor.
There is a
bottom heatsink on the chassis, beneath the system board and the
processor. A spare parts kit containing a replacement system board comes
with the processor and heatspreader built on it. A chassis spare parts
kit includes the bottom heatsink.
o PC Card rails - The PC Card rails are replaceable and are secured by two
screws from the bottom of the system board and a clip on top of the
rails.
The header attaches directly to the system board and cannot be
removed.
The top and bottom PC Card ejection levers are replaceable.
o Real-Time Clock Battery - The battery is located in the left corner at
the rear of the computer.
o Diskette drive - The diskette drive attaches to the system board by a
bracket and three screws; the bracket also attaches to the heatspreader
with two screws. The drive is connected by a diskette drive cable and
LIF connector. The bracket attaches to the drive with four screws. The
drive is protected by an insulator between the system board and the
drive.
The memory expansion board and battery pack are accessed from the bottom
of the computer. To service the remaining system unit module components,
the keyboard assembly must be removed. A complete list of replaceable
parts is included in Table 3-1.