compaq lte 5000 User Manual

							4 MultiBay II device release button
5 MultiBay II
6 PC Card release buttons
7 Ventilation exhausts (MultiBay ISA Expansion Base model)
8 PC Card slots
9 ISA slot access door (MultiBay ISA Expansion Base model)
10 Stereo speaker (MultiBay ISA Expansion Base model)
11 Security cable slot
12 Docking lever
13 Audio bass port (MultiBay ISA Expansion Base model)
14 Battery lights
15 Docking aid
===========================================================================
Additional components on the front of the expansion base and the
components on the left side of the expansion base are shown in Figure 1-5
and described in Table 1-8. 
						

							Table 1-8. Expansion Base Components - Front and Left Sides
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Item Description
===========================================================================
1 MultiBay I device release button
2 MultiBay I
3 Docking sensor probe
4 Stereo speakers (MultiBay Expansion Base model)
5 Alignment guide
6 Power light
7 Power button
8 Infrared port
9 MultiBay drive lights
10 Audio bass port (MultiBay ISA Expansion Base model)
11 Stereo speaker (MultiBay ISA Expansion Base model)
12 Ventilation exhaust (MultiBay ISA Expansion Base model) 
						

							13 AC power connector
===========================================================================
The external components on the rear panel of the expansion base are shown
in Figure 1-6 and described in Table 1-9.
Table 1-9. Expansion Base Components - Rear Panel
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Item Description
===========================================================================
1 External mouse connector
2 External keyboard connector
3 Stereo speaker/headphone jack
4 Stereo line in jack
5 Ethernet RJ-45 connector
6 Ethernet BNC connector
7 MIDI/Game connector
8 External monitor connector 
						

							9 Parallel connector
10 Serial connector
11 Auxiliary fan (MultiBay ISA Expansion Base model)
12 MPEG and TV Video Adapter connector
13 ISA slot cover (MultiBay ISA Expansion Base model)
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Chapter 1.7 Design Overview - MultiBay Expansion Base and MultiBay ISA Expansion Base 
In addition to replicating the computer I/O panel and offering additional
mass storage device bays, the expansion bases include the following:
o Main board with integrated Ethernet
o MultiBay connector board
o Power supply
o IrDA interface
o Activity lights
o MultiBays with ejectors
o PC Card slots
o ISA expansion board slot (MultiBay ISA Expansion Base model)
o Computer docking mechanism
1.7.1 Main Board
The expansion base main board supports the following major components:
o Ethernet controller (National DP83907)
o PCMCIA controller (Cirrus 6722)
o Super I/O (National 87334)
o Power controller (TMP47P440AF)
The Ethernet controller supports an integrated 10MB/sec Ethernet
subsystem with 10BaseT and 10Base2 interfaces. The Super I/O component
supports the MultiBays.
1.7.2 MultiBay Connector Board 
						

							The MultiBay connector board is mounted between the two MultiBays and
serves to route the appropriate signals to the MultiBay connectors.
1.7.3 Power Supply
The power supply is an AC-to-DC converter that serves the same function as
the AC adapter and DC-to-DC converter in the computer. It provides
regulated DC power for all of the subsystems. The expansion base uses a
standard AC power cord that connects directly to the power supply.
An external fan mounted on the power supply provides cooling. When the
temperature of the power supply exceeds 104oF (40oC), the fan turns on.
When the temperature drops below 104oF, the fan turns off.
The MultiBay ISA model has an auxiliary cooling fan mounted on the rear of
the bottom case. The auxiliary fan remains active as long as power is
applied to the MultiBay ISA Expansion Base.
1.7.4 IrDA Interface
The IrDA interface is mounted on the front left corner of the expansion
base and shares a small PCB with the removable drive status lights. The
board is mounted to the underside of the expansion base top cover with a
single screw. The IrDA interface on the expansion base replicates the IrDA
interface on the computer.
1.7.5 Activity Lights
The expansion base has two sets of activity lights.
Removable-Drive Lights
The removable-drive lights are installed on the front left of the
expansion base and share a small PCB with the IrDA interface. The board is
installed as a unit from the back side of the expansion base top cover.
The status lights are identified in Figure 1-7 and described in Table
1-10. 
						

							Table 1-10. Removable Drive Lights
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Index Function Description
===========================================================================
1 Computer diskette drive light Diskette drive in computer MultiBay
is being accessed
2 Computer hard drive/CD-ROM Hard drive or CD-ROM drive in
drive light computer is being accessed
3 MultiBay hard drive/CD-ROM Hard drive or CD-ROM in one of the
drive light expansion base MultiBays is being
accessed.
4 MultiBay diskette drive light Diskette drive in one of the
expansion base MultiBays is being
accessed
===========================================================================
Battery Lights
The battery lights are installed on the front right of the expansion base
and share a small PCB with the power button and power light. The board is
installed as a unit from the back side of the expansion base top cover.
The battery lights are identified in Figure 1-8 and described in Table
1-11. 
						

							Table 1-11. Battery Lights
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Index Function Description
===========================================================================
1 Computer MultiBay battery Status of battery pack in computer
light MultiBay
2 Computer battery light Status of battery pack in computer
battery compartment
3 MultiBay II battery light Status of battery in MultiBay on
the right side of the expansion
base
4 MultiBay I battery light Status of battery in MultiBay on
the left side of the expansion
base
===========================================================================
1.7.6 MultiBays with Ejectors
Each expansion base has two MultiBays. Each MultiBay is removable as a
unit with its ejector mechanism. The MultiBay is held to the expansion
base cover with three screws. The MultiBays in the expansion base
accommodate the same drives that are used by the computer and can be used 
						

							to charge batteries. MultiBay I will accept Compaq LTE Elite hard drives.
1.7.7 PC Card Slots
Each expansion base has two Type III PC Card slots that function similarly
to the PC card slots on the computer. Each PC Card slot on the expansion
base supports one Type I, one Type II, or one Type III PC Card. The only
serviceable part of the PC card slots are the slot doors. The rails and
connectors are incorporated into the main board.
1.7.8 Computer Docking Mechanism
The computer docking mechanism has a lever that protrudes from the right
side of either expansion base and serves to aid in seating the computer
when it is pushed toward the rear of the expansion base. The lever
releases the computer from the expansion base when it is pushed toward the
front of the expansion base.
1.7.9 ISA Expansion Board
The MultiBay ISA Expansion Base provides one slot for an 8- or 16-bit,
full-length industry-standard (ISA) expansion board.
The following provisions must be considered when choosing the type of ISA
expansion board to be installed in the expansion base:
o The enhanced video performance of the Compaq LTE 5000 Family of Personal
Computers drives an external monitor at resolutions up to 1024 x 768 x
256 colors and at selectable refresh rates up to 72 Hz, making the use
of ISA graphics controller boards unnecessary. If an ISA graphics
controller card is installed, the system will not operate. Graphics
controller boards are not supported.
o If a National NE2000 or compatible network ISA board is installed, the
built-in ethernet connectors in the expansion base are disabled. To
re-enable the built-in ethernet network feature, the NE2000 or
compatible network ISA expansion board must be removed.
Two Network Interface Cards (NICs) can be enabled at one time as long as
both are not NE2000 or compatible.
NOTE: NICs that have a default address of 300h require setup
configuration changes because the built-in ethernet uses the 300h
address.
o Some Moving Picture Experts Group (MPEG) ISA boards cannot be installed
as they require connection to the feature connector of the graphics
controller. This feature connector is not provided on the MultiBay ISA
Expansion Base. MPEG ISA boards with a standard video port (external
monitor connector) that do not require connection to the feature
connector on the graphics controller should function satisfactorily. 
						

							The Compaq MPEG and TV Video Adapter option provides enhanced MPEG
capabilities for use with the Compaq LTE 5000 Family of Personal
Computers. To achieve maximum MPEG functionality support, use the Compaq
MPEG and TV Video Adapter option.
o Due to the vast numbers of ISA expansion boards that are available,
Compaq does not guarantee or support every ISA expansion board.
Refer to the documentation accompanying the ISA expansion board being
installed for complete installation and configuration instructions. 
						

							Chapter 2. Troubleshooting 
 
Chapter 2.0 Introduction 
This chapter contains troubleshooting information for the computer. The
basic steps in troubleshooting include:
1. Completing the preliminary steps listed in Section 2.1.
2. Running the Power-On Self-Test (POST) as described in Section 2.4.
3. Running the Computer Checkup (TEST) as described in Section 2.5.
4. Performing the recommended actions described in the diagnostic tables
in Section 2.7 if you are unable to exercise POST or Computer Checkup
or if the problem persists after running POST and Computer Checkup.
Adhere to the following guidelines when troubleshooting:
o Complete the recommended actions in the order in which they are given.
o Repeat POST and Computer Checkup after each recommended action until the
problem is resolved and the error message does not return.
o Once the problem is resolved, do not complete the remaining recommended
actions.
o Refer to Chapter 5 for any removal and replacement procedures that are
recommended.
Chapter 2.1 Preliminary Steps 
IMPORTANT: Use the AC adapter when running POST, Computer Setup, or
Computer Checkup. A low battery condition could initiate
Standby (Suspend) and interrupt the test.
Before running POST and Computer Checkup, complete the following steps:
1. If a power-on password has been established, type the password and
press Enter.
NOTE: The key icon appears on the status display when the computer is
turned on to indicate that QuickLock/QuickBlank has been initiated.
Type the power-on password to exit QuickLock/QuickBlank. If the
password is unknown, it must be cleared (see Section 2.2).
2. Run Computer Setup (Section 2.3).
3. Position the brightness control actuator and contrast control actuator
(on selected models) in the center of their ranges and leave the