compaq lte elite User Manual

Power/ On Power on LED on top of unit Green
standby Flashing Standby (active when display is
open). Identical LED on
front of unit (active
when display is closed).
---------------------------------------------------------------------------
Battery On Battery Front of unit Orange
State charging
Flashing LowBatt 1
at one
per
second
Flashing LowBatt 2
at two
per
second
---------------------------------------------------------------------------
Hard Drive On Hard drive Front of unit Green
Activity being...

1. AC power
2. Automobile Adapter
3. Serial
4. 198-pin external options
5. Keyboard/mouse
6. Parallel
7. External monitor
8. Numeric keypad
9. PCMCIA
AC Power Connector
When the computer is docked in the convenience base and the convenience
base is turned on, AC power is applied to the computers AC power
connector. (The 198-pin connector carries all other signals between the two
units.)
Automobile Adapter Connector
The computer has an automobile adapter connector that accepts an 18.5 volt,
1.73 amp DC...

NOTE: The automobile adapter converts 12 volts DC from the automobile to
18.5 volts DC for use by the computer.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION >>>>>

Keyboard/Mouse Connector
The keyboard/mouse connector can be connected to a PS/2 mouse or an external
enhanced keyboard. Connecting the mouse/keyboard connector to a mouse
disables the integrated trackball, while connecting the mouse/keyboard
connector to an external keyboard disables the internal keyboard.
Parallel Connector
The parallel connector supports the parallel interface which meets
EPP 1.9 specifications.
External Monitor Connector
The external monitor connector provides an output for an...

The system board (Figure 1-6) provides the following: 
o Connector for removable hard drive [1] 
o PCMCIA connector [2] (refer to PCMCIA Slot)
o Board-to-board connection to the following devices:- Power interface board (PIB) [3] 
- Processor board [4] 
- Memory expansion board (on underside of system board)
o Cable connection to the following devices: - Internal AC power supply board [5] 
- Fan [6] 
- Internal keyboard [7] 
- Display [8]
- Diskette drive [9] 
- LED  cable  assembly  for  fron t-mounted...

o Battery charging circuitry and battery contacts [10] for battery pack 
o External input/output (I/O) connectors (Figure 1-4)
o DC-to-DC power supply (refer to DC-to-DC Power Supply in this section)
o 256 Kbyte flashable shared system ROM and keyboard ROM 
o 4 or 8 MB base RAM (depending on the model) 
o System controller, which provides the following:- Interface to the processor board for memory management (includingmemory refresh)
- Two DMA controllers 
- Two interrupt controllers 
- Clock generator
-...

voltage input comes from one of the following sources:
o Internal AC power supply
o Battery pack
o Automobile adapter
o 198-pin external options connector (from expansion base)
o Auxiliary battery
To replace the DC-to-DC power supply, the system board must be replaced.
Processor Board
The SL Enhanced Intel486 processor has an integrated coprocessor and is
upgradeable by replacing the processor board (Figure 1-7). The system
automatically adjusts to the new configuration. In addition, the processor
board...

NOTE: The 75 MHz processor is also available as an upgrade option.
Temperature Sensors
The primary temperature sensor is located on the processor board and the
secondary temperature sensor is located on the system board. These sensors
turn the fan on when the system approaches maximum reliable operating
temperatures.
If the temperature continues to rise, a system management interrupt (SMI)
is generated that creates a pop-up window (depicting a thermometer) to warn
the user of the temperature overload and...

o Numeric keypad connector
o Speaker and speaker amplifier
o Power switch
o Standby button
o Display switch
o The following LEDs:
- Power/standby
- Scroll lock
- Caps lock
- Num lock
Refer to Section 1.4 for more information on the controls and LEDs listed
above.
Memory Expansion Board
The 4 or 8 MB base RAM memory (depending on the model) may be increased by
adding an optional memory expansion board (Figure 1-9). The memory
expansion board plugs directly into the back side of the system board
(Section...

o4MB
o8MB
o16MB
NOTE: Some early memory expansion boards for the Concerto Family of
Personal Computers (option kit numbers 144790-001 and 144790-002)
operate at 80 ns and do not function properly when installed in the
Compaq LTE Elite Family of Personal Computers, which operate at
70 ns. Use only Compaq LTE Elite memory expansion boards
(Table 3-2).
Refer to the table in Section 5.3 for a list of total RAM memory based on
available system memory and memory obtained from the expansion board.
Internal AC...