Touchpad Check

If the touchpad doesn't work, do the following actions one at a time to correct the problem. Do not replace a non-defective FRU:

  1. Reconnect the touchpad cables.
  2. Replace the touchpad cables.
  3. Replace the touchpad.

After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement can occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware problem. No service actions are necessary if the pointer movement stops in a short period of time.

Error Symptom-to-FRU Index

The symptom-to-FRU index lists the symptoms and errors and their possible causes. The most likely cause is listed first.

Note: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU replacement does not solve the problem, put the original part back in the computer. Do not replace a non-defective FRU.

This index can also help you determine the next possible FRU to be replaced when servicing a computer.

If the symptom is not listed, see "Undetermined Problems" on page 92.

The following lists the error messages that the BIOS displays on the screen and the error symptoms classified by function.

Note: Most of the error messages occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured.

Note: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enter Setup and install Setup defaults or correct the error.

Error Messages List

Error Messages

Action in Sequence

Failure Fixed Disk

Reconnect hard disk drive connector. "Load Default Settings" in BIOS Setup Utility. Hard disk drive System board

Stuck Key

"Keyboard or Auxiliary Input Device Check".

Keyboard error

"Keyboard or Auxiliary Input Device Check".

Keyboard Controller Failed

"Keyboard or Auxiliary Input Device Check" .

Keyboard locked - Unlock key switch

Unlock external keyboard.

Monitor type does not match CMOS - Run Setup

Run "Load Default Settings" in BIOS Setup Utility.

Shadow RAM Failed at offset: nnnn

BIOS ROM System board

System RAM Failed at offset: nnnn

DIMM

System board

Extended RAM Failed at offset:nnnn

DIMM

System board

Error Messages

Action in Sequence

System battery is dead -Replace and run Setup

Replace RTC battery and Run BIOS Setup Utility to reconfigure system time, then reboot system.

System CMOS checksum bad - Default configuration used

RTC battery

Run BIOS Setup Utility to reconfigure system time, then reboot system.

Run BIOS Setup Utility to reconfigure system time, then reboot system. System board

Run BIOS Setup Utility to reconfigure system time, then reboot system. System board

Previous boot incomplete -Default configuration used

Run "Load Default Settings" in BIOS Setup Utility. RTC battery System board

Memory size found by POST differed from CMOS

Run "Load Default Settings" in BIOS Setup Utility. DIMM

System board

Diskette drive A error

Check that the drive is defined with the proper diskette type in BIOS Setup Utility. Diskette Drive Check.

Incorrect Drive A type - run SETUP

Check that the drive is defined with the proper diskette type in BIOS Setup Utility. Diskette Drive Check.

System cache error - Cache disabled

CPU board System board

CPU ID:

CPU board System board

DMA Test Failed

DIMM CPU board System board

Software NMI Failed

DIMM CPU board System board

Fail-Safe Timer NMI Failed

DIMM CPU board System board

Error Messages

Action in Sequence

Device Address Conflict

Run "Load Default Settings" in BIOS Setup Utility. RTC battery System board

Allocation Error for: device

Run "Load Default Settings" in BIOS Setup Utility. RTC battery System board

Failing Bits: nnnn

DIMM BIOS ROM System board

Fixed Disk n

None

Invalid System Configuration Data

BIOS ROM System board

I/O device IRQ conflict

Run "Load Default Settings" in BIOS Setup Utility. RTC battery System board

Operating system not found

Enter Setup and see if fixed disk and drive A: are properly identified.

Diskette drive

Hard disk drive

System board

No-Beep Symptoms

Symptom / Error

Action in Sequence

No beep, power-on indicator turns off and LCD is blank.

Power source (battery pack and power adapter). Power System Check.

Ensure every connector is connected tight and correct.

Reconnect the DIMM. CPU board. DC-DC/charger board. System board.

Symptom / Error

Action in Sequence

No beep, power-on indicator turns on and LCD is blank.

Power source (battery pack and power adapter).

Power System Check.

Reconnect the LCD connectors

DC-DC/charger board

CPU board.

Hard disk drive

LCD inverter ID

LCD FPC cable

Inverter

System board

No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT.

Reconnect the LCD connectors.

LCD inverter ID

LCD FPC cable

LCD inverter

System board

No beep, power-on indicator turns on and a blinking cursor shown on LCD during POST.

Ensure every connector is connected tightly and correctly.

System board

No beep during POST but system runs correctly.

Speaker System board

LCD-Related Symptoms

Symptom / Error

Action in Sequence

LCD backlight doesn't work LCD is too dark LCD brightness cannot be adjusted

LCD contrast cannot be adjusted

Enter BIOS Utility to execute "Load Setup Default

Settings", then reboot system.

Reconnect the LCD connectors.

Keyboard (if contrast and brightness function key doesn't work).

LCD inverter ID

LCD FPC cable

LCD inverter

System board

LCD-Related Symptoms

Symptom / Error

Action in Sequence

Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayed

Reconnect the LCD connectors.

LCD inverter ID

LCD FPC Cable

LCD inverter

System board

LCD has extra horizontal or vertical lines displayed.

LCD inverter ID LCD inverter LCD FPC Cable LCD

System board

Indicator-Related Symptoms

Symptom / Error

Action in Sequence

Indicator incorrectly remains off or on, but system runs correctly.

Reconnect the LED board LED board System board

Power-Related Symptoms

Symptom / Error

Action in Sequence

Power shuts down during operation.

Power source (battery pack and power adapter).

Power System Check.

Battery pack

Power adapter

DC-DC/charger board

Audio-I/O & battery connection board

System board

The system doesn't poweron.

Power source (battery pack and power adapter).

Power System Check.

Battery pack

Power adapter

DC/DC & Charge boar

Audio-I/O & battery connection board

System board

Power-Related Symptoms

Symptom / Error

Action in Sequence

The system doesn't poweroff.

Power source (battery pack and power adapter). Power System Check

Hold and press the power switch for more than 4

seconds.

Charger board

System board

Battery can't be charged.

Power System Check Battery pack DC-DC/charger board System board

PCMCIA-Related Symptoms

Symptom / Error

Action in Sequence

System cannot detect the PC Card (PCMCIA)

PCMCIA slot assembly System board

PCMCIA slot pin is damaged

PCMCIA slot assembly

Memory-Related Symptoms

Symptom / Error

Action in Sequence

Memory count (size) appears different from actual size.

Enter BIOS Setup Utility to execute "Load Default

Settings, then reboot system.

DIMM

System board

Speaker-Related Symptoms

Symptom / Error

Action in Sequence

In DOS or Windows, multimedia programs, no sound comes from the computer.

Press Fn-F8, Speaker ON/OFF control. Audio driver Speaker System board

Internal speakers make noise or emit no sound.

Press Fn-F8, Speaker ON/OFF control.

Speaker

System board

Power Management-Related Symptoms

Symptom / Error

Action in Sequence

The system will not enter hibernation.

Keyboard (if control is from the keyboard)

Hard disk drive

System board

Check with Sleep Manager.

The system doesn't enter hibernation mode and four short beeps every minute.

Hibernation Mode

Press Fn+F4 and see if the computer enters hibernation mode.

Touchpad

Keyboard

Hard disk connection board Hard disk drive System board

The system doesn't enter standby mode after closing the LCD.

Standby Mode LCD cover switch System board

The system doesn't resume from hibernation mode.

Hybernation Mode Hard disk connection board Hard disk drive System board

The system doesn't resume from standby mode after opening the LCD.

Standby Mode LCD cover switch System board

Battery fuel gauge in Windows doesn't go higher than 90%.

Remove battery pack and let it cool for 2 hours.

Refresh battery (continue to use battery until power off, then charge battery).

Battery pack

Charger board

System board

System hangs intermittently.

Set Thermal Sensor Threshold. Reconnect hard disk/CD-ROM drives. Hard disk connection board System board

Peripheral-Related Symptoms

Symptom / Error

Action in Sequence

System configuration does not match the installed devices.

Enter BIOS Setup Utility to execute "Load Default

Settings", then reboot system.

Reconnect hard disk/CD-ROM/diskette drives.

External display does not work correctly.

Press Fn+F5, LCD/CRT/Both display switching Running PQA Diagnostics Program. System board

USB does not work correctly.

System Diagnostics Diskette. System board

Print problems

Ensure the "Parallel Port" in the "Onboard Devices Configuration" of BIOS Setup Utility is set to Enabled.

Onboard Devices Configuration Run printer self-test. Printer driver Printer cable Printer

System Board

Serial or parallel port device problems

Ensure the "Serial Port" in the Devices

Configuration" of BIOS Setup Utility is set to

Enabled.

Device driver

Device cable

Device

System board

Keyboard/Touchpad-Related Symptoms

Symptom / Error

Action in Sequence

Keyboard (one or more keys) does not work.

Reconnect the keyboard cable

Keyboard

System board

Touchpad does not work.

Reconnect touchpad cable Touchpad board System board

Modem-Related Symptoms

Symptom / Error

Action in Sequence

Internal modem does not work correctly.

System Diagnostics Diskette Modem phone jack Modem board System board

Note: If you cannot find a symptom or an error in this list and the problem remains.

DIY Battery Repair

DIY Battery Repair

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