Index of SymptomtoFRU Error Message

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 Defaults" on Exit screen, then reboot system. Reconnect the LCD connectors.

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

LCD inverter ID

LCD cable

LCD inverter

Main board

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

Reconnect the LCD connector

LCD inverter ID

LCD cable

LCD inverter

Main board

LCD has extra horizontal or vertical lines displayed.

LCD inverter ID LCD inverter LCD cable LCD

Main board

Indicator-Related Symptoms

Symptom / Error

Action in Sequence

Indicator incorrectly remains off or on, but system runs correctly

Reconnect the inverter board Inverter board Main board

Power-Related Symptoms

Symptom / Error

Action in Sequence

Power shuts down during operation

Power source (battery pack and power adapter). See "Power System Check" on page 71. Battery pack Power adapter

Hard drive & battery connection board Main board

The system doesn't power-on.

Power source (battery pack and power adapter). See "Power System Check" on page 71. Battery pack Power adapter

Hard drive & battery connection board Main board

The system doesn't power-off.

Power source (battery pack and power adapter). See "Power System Check" on page 71.

Hold and press the power switch for more than 4 seconds. Main board

Battery can't be charged

See "Check the Battery Pack" on page 72. Battery pack Main board

PCMCIA-Related Symptoms

Symptom / Error

Action in Sequence

System cannot detect the PC Card (PCMCIA)

PCMCIA slot assembly Main 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.

DIMM Main board

Speaker-Related Symptoms

Symptom / Error

Action in Sequence

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

Audio driver Speaker Main board

Internal speakers make noise or emit no sound.

Speaker Main 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 Main board

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

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

Touchpad

Keyboard

Hard disk connection board Hard disk drive Main board

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

LCD cover switch Main board

The system doesn't resume from hibernation mode.

Hard disk connection board Hard disk drive Main board

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

LCD cover switch Main 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 use battery until power off, then charge battery).

Battery pack

Main board

System hangs intermittently.

Reconnect hard disk/CD-ROM drives. Hard disk connection board Main board

Peripheral-Related Symptoms

Symptom / Error

Action in Sequence

System configuration does not match the installed devices.

Enter BIOS Setup Utility to execute "Load Setup defaults", then reboot system.

Reconnect hard disk/CD-ROM/diskette drives.

External display does not work correctly.

See "System Diagnostic Diskette" on page 48

See if there is an error beep. If there is an erro beep, then change main board.

Power off. Then check if RAM CPU BIOS are well-connected.

Press Fn+F5 three times slowly

LCD FPC

LCD inverter

LCD

USB does not work correctly

See "System Diagnostic Diskette" on page 48 Main board

Print problems.

Ensure the "Parallel Port" in the "System Devices" of BIOS Setup

Utility is set to Enabled.

Onboard Devices Configuration

Run printer self-test.

Printer driver

Printer cable

Printer

Main board

Keyboard/Touchpad-Related Symptoms

Symptom / Error

Action in Sequence

Keyboard (one or more keys) does not work.

Reconnect the keyboard cable.

Keyboard

Main board

Touchpad does not work.

Reconnect touchpad cable. Touchpad board Main board

Modem-Related Symptoms

Symptom / Error

Action in Sequence

Internal modem does not work correctly.

See "System Diagnostic Diskette" on page 48. Modem phone port modem combo board Main board

NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 81.

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