compaq lte elite User Manual

							Hibernation
Hibernation is a power conservation mode that performs the following
functions:
o Locks the keyboard and clears the screen.
o Saves all current information in memory and the place in the application
to the hard drive.
o Turns the computer off.
Hibernation is preenabled on the computer and the Hibernation file is
preinstalled on the hard drive. The Hibernation file is slightly larger
than the total RAM memory of the computer (system memory and memory
expansion board).
Hibernation is initiated by one of the following means:
o Automatically according to the preselected system timeout.
o Automatically when the battery reaches a low battery level if
preselected.
o Manually by simultaneously pressing the Fn key and standby button.
When the computer is turned on again, the system exits Hibernation and the
user is returned to the previous place in the application from the hard
drive.
NOTE: Hibernation cannot be initiated when the computer is in an expansion
base or a convenience base.
Battery Operating Time
Battery operating time is affected by variables such as the following:
o Power conservation settings
o Hardware configuration
o Software applications
o Installed options
o Display brightness
o Hard drive usage
o Changes in operating temperature
o Type and number of installed PCMCIA cards
Refer to Appendix B for information on increasing battery pack operating
time, ensuring battery gauge accuracy, conditioning the battery pack, and
disposal of a used battery pack. 
						

							1.11 Security 
The computer has the following security features:
o Power-on password and setup password.
o The ability to disable certain components, such as the keyboard, diskette
drive, display, PCMCIA slot, parallel connector, and serial connector, to
prevent unauthorized access.
o Provision for an optional cable lock (Figure 1-18) to lock the computer
to an immovable object.
NOTE: For procedures to clear the power-on password, refer to Clearing the
Power-On Password in Section 2.1.
NOTE: The cable lock, Kensington MicroSaver Security System Model 64068
(Figure 1-19), is available from Kensington Microwave Limited or
major computer resellers worldwide at 1-(415)-572-2700. The cable
lock is not available through Compaq. 
						

							Chapter 2 - Compaq LTE Elite Troubleshooting 
Introduction 
This chapter covers troubleshooting information for the computer. The basic
steps in troubleshooting include:
1. Following the preliminary steps listed in Section 2.1.
2. Running the Power-On Self-Test (POST) as described in Section 2.2.
3. Running Computer Checkup (TEST) as described in Section 2.3.
4. Following the recommended actions described in the diagnostic tables in
Section 2.4 if you are unable to run POST or Computer Checkup or if the
problem persists after they are run.
When following the recommended actions in Section 2.2, 2.3, and 2.4, carry
them out in the order given. Rerun POST and Computer Checkup after each
recommended action until the problem is solved and no error message occurs.
(Once the problem is solved, do not complete the remaining recommended
actions.)
NOTE: If the problem was intermittent, check the unit several times to
verify that the problem is solved.
Refer to Chapter 4 for any removal and replacement procedures that are
recommended.
2.1 Preliminary Steps 
IMPORANT: Use AC power when running POST, Computer Setup, and Computer
Checkup. A low battery condition could initiate Standby and
interrupt the program.
Before running POST and Computer Checkup, complete the following
preliminary steps:
1. If a power-on password has been established, type the password and press
the Enter key.
NOTE: The key symbol (o--m) appears on the screen when the computer is
turned on to indicate that a power-on password is established. If
the password is unknown, it must be cleared (refer to Clearing
the Power-On Password).
2. Run Computer Setup (Section 1.8).
3. Position the brightness and contrast control slides approximately in the
center of their range and leave the display open.
4. Turn off the computer and external devices. 
						

							5. Disconnect any external devices that you do not want to test. (Do not
disconnect the printer if you want to test it or use it to log error
messages.)
NOTE: If a problem only occurs when an external device is connected to
the computer, the problem may be with the external device or its
cable. Verify this by running POST with and without the external
device connected.
6. Install loopback plugs in the serial and parallel connectors if you
would like to test these ports (Table 3-13).
7. Ensure that the removable hard drive is installed in the computer.
8. Ensure that the battery pack is inserted in the computer and the
computer is connected to an external AC power source.
When the preliminary steps are complete, you are ready to run POST
(Section 2.2) and Computer Checkup (Section 2.3).
Clearing the Power-on Password
Clearing the power-on password clears CMOS, the EEPROM that contains
configuration information for all external devices, the setup password, and
all other security features including:
o QuickLock
o QuickBlank
o Diskette drive disable
o Diskette boot ability disable
o Serial port disable
o Parallel port disable
o PCMCIA slot disable
NOTE: Disconnecting the auxiliary battery does not clear the power-on
password.
If the password is unknown, clear it by completing the following steps:
1. Turn off the computer.
2. Disconnect the power cord.
3. Remove the battery pack (Section 4.5).
4. Remove the keyboard cover (Section 4.7).
5. Remove the keyboard, but dont disconnect the cable (Section 4.10).
Place the keyboard toward the front of the system unit to access the
jumper located near the lower-right corner of the processor board.
NOTE: The pins used by the jumper are labeled on the system board as
1, 2, and 3. (Pin 1 is toward the rear of the computer.)
The jumper can be placed simultaneously on pins 1 and 2 (the
1-2 or normal position [1]) or on pins 2 and 3 (the 2-3 or 
						

							password-clearing position [2]). Refer to Figure 2-1.
6. Move the jumper from the normal 1-2 position [1] to the 2-3
position [2] (Figure 2-1).
7. Insert the battery pack.
IMPORTANT: Ensure that the battery pack is charged since a low battery
condition could initiate Standby and interrupt the
procedure.
8. Turn on the computer.
The ROM clears the power-on password during POST.
9. After POST finishes, turn off the computer.
10. Remove the battery pack.
11. Move the jumper back to the normal 1-2 position. 
						

							12. Insert the battery pack.
13. Turn on the computer to verify that the power-on password has been
cleared. If it has not been cleared, remove the battery pack and then
repeat steps 6 through 13. If the password is still not cleared,
replace the system board (Section 4.17).
14. Replace the keyboard.
15. Replace the keyboard cover.
16. Reconnect the power cord to the external outlet.
17. Run Computer Setup (Section 1.8) to reconfigure the system and reset
the power-on and setup passwords.
2.2 Power-On Self-Test (POST) 
The Power-On Self-Test (POST) is a series of diagnostic tests that run
automatically when the system is turned on. POST detects which types of
mass storage devices are installed in the computer and checks that the
following assemblies are functioning properly:
o Diskette drive
o Display
o External keyboard
o Hard drive
o Internal keyboard controller
o Memory expansion board
o Processor board
o Speaker on the power interface board (PIB)
o System board
o System memory
o Trackball assembly (POST identifies the trackball but does not actually
test it.)
o Video controller circuitry
Running POST
To run POST, complete the following steps:
1. Turn off the computer.
2. Turn on the computer. 
						

							If POST does not detect any errors, the computer beeps once or twice to
indicate that POST has run successfully and starts (boots) from the hard
drive (or from a bootable diskette if one is installed in the diskette
drive).
If POST detects errors, the errors are indicated by screen and/or audible
messages. Refer to Power-On Self-Test (POST) Error Messages in this
section for a list of POST error messages, probable causes, and recommended
actions.
Run Computer Checkup after POST runs successfully (Section 2.3).
NOTE: If the system is not functioning well enough to run POST, or if the
display is not functioning well enough to show POST error messages,
refer to the troubleshooting tables in Section 2.4.
Power-On Self-Test (POST) Error Messages
Table 2-1 lists visual error messages for POST, audible (beep) error
messages, probable causes, and recommended actions.
Table 2-1. Power-On Self-Test Messages
===========================================================================
Message Beeps Probable Cause Recommended Action
===========================================================================
101 - ROM Error 1 Long, System ROM checksum 1. Inspect the ROM
1 Short invalid. placement.
2. Replace the ROM.
3. Flash the ROM.
4. Replace the system
board.
---------------------------------------------------------------------------
101 - I/0 ROM None Option ROM checksum 1. Inspect the ROM
Error invalid. placement.
2. Verify the correct
ROM.
3. Replace the ROM.
---------------------------------------------------------------------------
102 - System None Defective DMA, 1. Replace the system
Board Failure timers, etc. board.
2. Replace the processor
board.
---------------------------------------------------------------------------
162 - System 2 Short No diskette drive 1. Run Computer Setup.
Options or mismatch in 2. Check diskette cable.
Error drive type. 3. Check diskette drive.
---------------------------------------------------------------------------
162 - System 2 Short Configuration Run Computer Setup.
Options Not Set incorrect.
---------------------------------------------------------------------------
163 - Time & 2 Short Invalid time or Run Computer Setup.
Date Not Set date in
configuration
memory.
---------------------------------------------------------------------------
164 - Memory 2 Short Configuration The following steps 
						

							Increase memory incorrect. apply to both 164 error
Detected codes:
1. Autosetup will
correct.
2. Verify that memory
board is installed
correctly.
3. Replace memory
board.
4. Replace system board.
------------------------------------------------
164 - Memory 2 Short Configuration
Decrease memory incorrect.
Detected
---------------------------------------------------------------------------
168 - CMOS None Auxiliary battery 1. Recharge auxiliary
Checksum charge is low. battery. (Refer to
Invalid Auxiliary Battery
in Section 1.6). Run
Computer Setup if
configuration
settings are other
than default. **
---------------------------------------------------------------------------
** Autosetup configures to the default settings if you do not run Computer
Setup.
===========================================================================
Message Beeps Probable Cause Recommended Action
===========================================================================
201 - Memory None RAM failure. 1. Make sure the memory
Error module is installed
correctly.
2. Clean the contacts of
the memory module and
system board.
3. Make sure PCMCIA
memory card is
installed correctly
by running PCMCIA
card service
software and
Computer Setup.
4. If using ISA
expansion memory
module, make sure
module is installed
correctly.
5. Replace the memory
module(s) (if
applicable).
6. Replace PCMCIA memory
card.
7. Replace ISA memory
board.
8. Replace system board.
---------------------------------------------------------------------------
203 - Memory None RAM failure. Refer to recommended
Address Error actions for Error Code
201. 
						

							---------------------------------------------------------------------------
205 - Memory None Cache memory error. 1. Run Computer Checkup.
Error 2. Replace the processor
board.
---------------------------------------------------------------------------
207 - Invalid None Memory module Verify placement of
Memory installed memory.
Configuration incorrectly.
Module
---------------------------------------------------------------------------
209 - NCA RAM None RAM Failure. Run Computer Checkup.
Error
---------------------------------------------------------------------------
211 - Memory None RAM Failure. Run Computer Checkup.
Failure
---------------------------------------------------------------------------
301 - Keyboard None Keyboard failure. The following steps
Error apply to both 301 error
codes:
301 - Keyboard None Keyboard failure.
Error or Text 1. Reseat external
Fixture keyboard cable and
Installed free any stuck keys.
2. Replace keyboard.
3. Replace system board.
===========================================================================
Message Beeps Probable Cause Recommended Action
===========================================================================
303 - Keyboard None System board Replace the system
Controller Error keyboard board.
controller
failure.
---------------------------------------------------------------------------
304 - Keyboard None Defective keyboard. Check external keyboard.
or System Unit
Error ----------------------------------------------
Defective system Replace system board.
board.
---------------------------------------------------------------------------
40X - Parallel 2 Short Both external Run Computer Setup.
Port X Address and internal ports
Assignment are assigned to
Conflict parallel port X.
---------------------------------------------------------------------------
401 - Printer None Defective printer Replace the system
Error controller. board, if applicable.
---------------------------------------------------------------------------
501 - Display 1 Long, Video display 1. Replace the video
Adapter Failure 2 Short controller. board if external one
used.
2. Replace the system
board.
---------------------------------------------------------------------------
601 - Diskette None Diskette controller 1. Make sure diskette
Controller Error circuitry. drive cable is
seated.
2. Replace the diskette
drive cable.
3. Replace the diskette
drive. 
						

							4. Replace the system
board.
---------------------------------------------------------------------------
602 - Diskette None Diskette in drive A 1. Replace the diskette.
Boot not bootable. 2. Replace the diskette
drive.
3. Replace the system
board.
---------------------------------------------------------------------------
605 - Diskette 2 Short Mismatch in drive Run Computer Setup.
Drive Error type.
---------------------------------------------------------------------------
610 - External None Switch 3 on the Verify switch 3 setting
storage device vertical circuit and change if necessary.
failure. board is set for
an external drive
but no tape or
diskette drive is
installed in the
expansion base.
----------------------------------------------
External storage 1. Turn on external
device not powered storage device and
up. reboot computer.
2. Check and/or replace
power and signal
cables for external
storage device.
===========================================================================
Message Beeps Probable Cause Recommended Action
===========================================================================
611 - Primary 2 Short Configuration Run Computer Setup.
Floppy Port error.
Address
Assignment
Conflict
---------------------------------------------------------------------------
612 - Secondary 2 Short Configuration Run Computer Setup.
Floppy Port error.
Address
Assignment
Conflict
---------------------------------------------------------------------------
702 - None Coprocessor error. Replace the processor
Coprocessor board.
Detection Error
---------------------------------------------------------------------------
702A - 2 Short Coprocessor error. Replace the processor
Coprocessor board.
Detection Error
---------------------------------------------------------------------------
703 - CMOS 2 Short Coprocessor or 1. Run the Configuration
Reports A configuration utility.
Coprocessor That error. 2. Replace the processor
Has Not Been board.
Detected by
POST
---------------------------------------------------------------------------
1125 - Internal 2 Short Defective internal 1. Run Computer Setup
Serial Port serial port. and check it.