compaq lte 5000 User Manual

							o Fast charging of two batteries in 3 hours
It requires the AC Adapter or Automobile Adapter for power.
Chapter 1.3 Computer External Components 
The external components on the front and right sides of the computer are
shown in Figure 1-2 and are described in Table 1-3.
Table 1-3. Computer Components - Front and Right Sides 
						

							===========================================================================
Item Component Function
===========================================================================
1 Power switch Turns the power on and off.
---------------------------------------------------------------------------
2 Display switch Turns display off and initiates beep if
display is closed with computer on. When
used with the standby button, restarts the
computer.
---------------------------------------------------------------------------
3 Standby switch Initiates/exits Standby. When used with
the display switch, restarts the
computer. When used with the Fn key,
initiates Hibernation.
---------------------------------------------------------------------------
4 Status panel icons The computer is connected to an external
power source.
QuickLock/QuickBlank has been initiated.
Type the power-on password on the
blank screen to exit
QuickLock/QuickBlank.
Power Management is turned on. Run
Computer Setup to view or change
Power Management settings.
A diskette drive in the MultiBay is
being accessed.
A hard drive in the dedicated hard
drive bay or a hard drive or CD-ROM
drive in the MultiBay is being accessed.
An external monitor is actively
displaying information.
The built-in speakers on the front of the
display or speakers or headphone
connected to the computer or expansion
base are turned on.
Num lock is on, which enables the
embedded numeric keypad.
Caps Lock is on, which causes new text
to be typed in uppercase letters.
Scroll Lock is on, which causes the
cursor to scroll by fields, rather than
by lines.
Battery gauges 1 and 2. Gauge 1 turns on
if a battery pack is in the dedicated
battery bay and shows the amount of
charge in the battery pack. Gauge 2 turns
on if a battery pack is in the MultiBay
and shows the amount of charge in that
battery pack. 
						

							---------------------------------------------------------------------------
5 Ventilation intake Intake vents provide proper airflow to
help prevent the computer from
overheating.
---------------------------------------------------------------------------
6 Stereo speakers Built-in stereo speakers for PC and
multimedia sound system.
---------------------------------------------------------------------------
7 Latch Secures computer in a closed position;
release to open.
---------------------------------------------------------------------------
8 Brightness control Adjusts the brightness of the display.
Contrast control (not Adjusts the contrast of the display
shown) (CSTN models).
---------------------------------------------------------------------------
9 Standby (suspend) light Illuminates when power to the computer
(green) is turned on. Blinks to indicate
computer is in Standby (Suspend).
---------------------------------------------------------------------------
10 Battery light (yellow) Illuminates when a battery pack is
charging; turns off when the battery
pack is fully charged; blinks to
indicate low battery.
---------------------------------------------------------------------------
11 Microphone Built-in microphone for the Compaq
Sound System.
---------------------------------------------------------------------------
12 PC Card slots Accepts one Type III or two Type II or
two Type I PC Cards (PCMCIA).
---------------------------------------------------------------------------
13 Battery release Releases a battery pack in the battery
compartment.
---------------------------------------------------------------------------
14 Keyboard Keyboard with EasyPoint II pointing
device and pick buttons.
---------------------------------------------------------------------------
15 Battery compartment Dedicated battery compartment for the
main battery pack.
---------------------------------------------------------------------------
16 Hard drive bay Dedicated hard drive bay.
---------------------------------------------------------------------------
17 MultiBay Bay that supports multiple devices:
CD-ROM drive, hard drive, battery pack,
or diskette drive.
===========================================================================
The external components on the rear and left sides of the computer are
shown in Figure 1-3 and described in Table 1-4. 
						

							Table 1-4. Computer Components - Rear and Left Sides 
===========================================================================
Item Component Function 
===========================================================================1 Serial number Identifies the computer.
--------------------------------------------------------------------------- 2 Serial connector Connects optional serial devices.
---------------------------------------------------------------------------
3 Parallel connector Connects optional parallel devices.
---------------------------------------------------------------------------
4 External options Connects the expansion base or the connector optional Automobile Adapter.
--------------------------------------------------------------------------- 5 External monitor connector Connects an external monitor.
---------------------------------------------------------------------------
6 Power connector Connects the AC Adapter or the optional Automobile Adapter.
--------------------------------------------------------------------------- 7 Stereo speaker/headphone Connects external speakers or jack headphones.
--------------------------------------------------------------------------- 8 Stereo line in jack Stereo line-in jack for CD player,
tape deck, tuner, or other line level 
audio source.
---------------------------------------------------------------------------
9 Keyboard/mouse connector Connects an external keyboard, numeric keypad,  PS/2  mouse,  or  other  pointing  device. 
						

							--------------------------------------------------------------------------- 
10 Docking sensor Access to a microswitch that initiatesthe 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 built-in
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.
===========================================================================
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) 
o VGA controller (Cirrus CL-GD754x) 
o Keyboard controller (Intel 80C51SL)
o PCMCIA controller (Cirrus 6722) 
						

							o Super I/O (National 87334)
o Audio controller (ESS688 or ESS1688)
o Power controller (47P440AF)
The boards on which these controllers reside are identified in the
sections that follow.
1.4.1 Display Unit
The display unit includes the following field replaceable components:
o Display assembly
o Display bezel with speakers
o Release latches
o Brightness control actuator
o Contrast control actuator (CSTN models only)
o Clutch assemblies
o Compaq logo
Display Assembly
The display assembly is replaced as a complete unit that includes:
o LCD panel
o LCD inverter
o Display bezel
o Stereo speakers
o Clutch assemblies
o Release latches
o Brightness control actuator
o Contrast control actuator (CSTN models only)
NOTE: The display bezel, release latches, brightness/contrast control
actuator(s), Compaq logo, and clutch assemblies can also be replaced
individually. The speakers are permanently installed on the display
bezel. 
						

							The following LCD panels are supported:
o 10.4-inch (26.4 cm) CSTN VGA Display (640 x 480)
o 11.3-inch (28.7 cm) CSTN SVGA Display (800 x 600)
o 10.4-inch (26.4 cm) CTFT VGA Display (640 x 480)
o 10.4-inch (26.4 cm) CTFT VGA Display (800 x 600)
o 11.3-inch (28.7 cm) CTFT SVGA Display (800 x 600)
o 12.1-inch (30.7 cm) CTFT SVGA (800 x 600)
o 12.1-inch (30.7 cm) CTFT 1024 x 768 Display
Both LCD panels have a controllable backlight intensity that can be
adjusted with a slide switch. The CSTN (dual scan) panels also have a
slide switch for contrast control.
The LCD panel inverter cable plugs into an 8-pin connector on the
processor board. The LCD cable plugs into a connector on the system board.
The inverters and cables differ according to the display type and
manufacturer and cannot be interchanged. All of the display cables are
routed to the system unit in the vicinity of the clutches.
NOTE: It is important that these instructions be followed when replacement
of any part requires removal of the display assembly.
Slide the display assembly back in place and replace all screws. The
screws must be fully tightened to ensure that they do not touch the
expansion base sensor located near the left hinge. Failure to properly
seat the screws may prevent the unit from booting up.
NOTE: Use Fn+F4 hotkeys to switch between external, internal, and
simultaneous display. (The CSTN 800 x 600 does not support
simultaneous display.)
Display Bezel With Speakers
The display bezel attaches to the display unit with a snap action and is
secured with a screw at each corner. Screw covers are installed over the
screw heads. After removing these screws, use a Compaq bezel removal tool
to separate the bezel from the display assembly. The display bezel can be
removed without separating the display unit from the system unit.
The internal stereo speakers are 0.5-watt, 8-ohm, permanently installed in
the top corners of the display bezel and are installed as a unit with
cabling attached. The speaker cable is routed into the system unit and
connects to a 4-pin connector adjacent to the 30-pin LCD connector on the
system board. The CPU cover is easily removed from the system unit to
access this connector.
NOTE: Use Fn+F5 hotkeys to toggle speakers/headphones off and on. 
						

							Release Latches
The release latches serve to lock the display and system units together
when the computer is in the closed position. Each latch assembly consists
of three parts:
o Latch actuator
o Latch hook
o Latch spring
The release latch assembly is available as a field replaceable unit. The
display bezel must be removed to replace the latch assemblies.
The release latches are mounted in the display unit back cover. The
display bezel must be removed to access the latches. The latches snap into
place and require a simple depression of a tab to be released from the
display cover.
Brightness/Contrast Control Actuator(s)
The displays have a controllable backlight intensity that can be adjusted
with a slide switch. The CSTN panels also have slide switch for contrast
control. The actuators for these adjustments are available as field
replaceable units.
The brightness/contrast control actuator(s) (contrast control actuator on
CSTN displays only) are mounted on the display bezel with a snap action.
The display bezel must be removed to allow the tabs on the back side of
the actuator to be depressed for removal. When installing a display bezel,
make certain the brightness/contrast actuator(s) aligns with the
brightness/contrast control(s) in the display assembly.
Clutch Assemblies
The clutch assemblies provide the hinge function between the display unit
and system unit and also provide continuous tension that allows the
display unit to be positioned at any angle.
The clutch assemblies are available in pairs as field replaceable units.
Each clutch assembly is mounted to the display unit with two screws and to
the system unit with two screws. Removal and replacement of the clutch
assemblies requires removal of the display bezel and the CPU cover (on the
system unit).
Compaq Logo
The Compaq logo is installed on the back of the display unit. The location
for the logo is indicated by an ellipse embossed in the cover. The logo is
an adhesive-backed label that is available as a field replaceable unit.
The label indicates which processor is installed in the computer.
1.4.2 System Unit 
						

							The system unit contains the following field replaceable units:
o CPU cover
o Internal microphone
o Status panel
o Processor board
o Power board
o Cooling fan
o System board
o Memory expansion board (optional)
o Keyboard assembly
o Auxiliary battery
o Miscellaneous plastic parts
CPU Cover
The CPU cover is located above the keyboard and is secured in place with
three screws on the rear panel of the system unit. Tabs on the front edge
of the CPU cover engage slots across the top edge of the keyboard panel.
The CPU cover contains the actuators for the following:
o Power switch
o Standby (Suspend) button
o Display switch
The CPU cover with all switch actuators installed is available as a field
replaceable unit. The switch actuators are also available as field
replaceable units.
The power switch actuator and spring and the standby (suspend) button
actuator and spring are removed by squeezing the actuator tabs on the
underside of the CPU cover and pushing the buttons out of their mounting
hole. The display switch actuator simply snaps out of its mounting hole
from the underside of the CPU cover.
The CPU cover must be removed to service any of the above described switch
actuators. The cover also must be removed to disconnect any of the display
unit cables from the system unit, to remove the display unit, to service
the status panel, and to remove the keyboard assembly.
Internal Microphone
The internal microphone is supported by the audio subsystem and connects