TP 340 - Various Symptoms

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Service Hints & Tips

Document ID: GSMH-3BUERQ

TP 340 - Various Symptoms

Applicable to: World-Wide

LCD Related Symptoms:

Symptom/Error

FRU/Action

Flicker

1. Do not replace any FRUs. In certain brightness/contrast settings, screen flicker can be seen because of technical limitations.

No beep, power-on indicator on, and a blank LCD during POST.

1. System Board

- LCD backlight not working
- LCD too dark
- LCD brightness cannot be adjusted
- LCD contrast cannot be adjusted.

1. Reseat the LCD connector. (See ¿1090 LCD Assembly—.)
2. LCD Assembly

- LCD screen unreadable, or
- Characters missing pels, or
- Screen abnormal, or
- Wrong characters displayed.

1. Reseat the LCD connector. (See ¿1090 LCD Assembly—.)
2. System Board
3. LCD Assembly

LCD has extra horizontal or vertical lines displayed.

1. LCD Assembly

LCD FRU Replacement Notice:
If missing or discolored dots appear on the LCD, carefully read the following note to determine whether you should replace the LCD.

Do not replace the LCD for defective pixels if dots that are less than half the area of a pixel are defective (a total of 11 dots are allowed). The LCD is not defective if the dots are functional but are slightly different in color from the immediate, surrounding area or appear as a ¿stain—.

Keyboard/TrackPoint II or III Related Symptoms:

Symptom/Error

FRU/Action

Keyboard (one or more keys) does not work, or works intermittently.

1. Reseat the three keyboard cables.
2. Reseat the keytop. Ensure the rubber dome under the keytop is straight
and in the correct direction, with the larger radius on the top.
3. Keyboard
4. System Board

TrackPoint II or III does not work.

1. Go to ¿TrackPoint II and III Checkout—.
2. Keyboard
3. System Board

Pointer moves automatically or does not work correctly.

1. See ¿TrackPoint II and III Checkout—.

Indicator Related Symptoms:

Symptom/Error

FRU/Action

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

1. Reseat the indicator card.
2. Indicator Card
3. System Board

Battery power status indicator blinks from green, yellow, to orange.

1. Check thata correct battery is installed.
2. Battery Pack
3. System Board

Power Related Symptoms:

Symptom/Error

FRU/Action

Power shut down during operation.

1. Go to ¿Power Systems Checkout—.
2. Battery Pack
3. Remove the battery pack and let it cool for two hours.
4. Power Sources

The system will not power-off.
(See ¿Reset Pushbutton—.)

1. Press the Reset pushbutton.
2. System Board

Function/Audio Related Symptoms:

Symptom/Error

FRU/Action

The system will not suspend or resume by opening or closing the keyboard.

1. Go to ¿Suspend Mode— on page 8 and check that the computer can enter
suspend mode.
2. Go to the Easy-Setup screen and press Fn+ 4. If the computer enters suspend mode, suspect that the application program is defective.
3. System Board

The system will not suspend or resume by opening or closing the LCD.

1. Go to ¿Suspend Mode— on page 8 and that check that the computer can enter suspend mode.
2. Go to the Easy-Setup screen and press Fn+ 4. If the computer enters
suspend mode, suspect that the application program is defective.
3. System Board

Battery Fuel-Gauge does not go higher than 90%.

1. Go to ¿Checking the Battery Pack— and see the note.

Modem problems.
(If installed)

1. Run the Internal Modem Test.
2. Check that the port is set to enable in Easy Setup.
3. Check that the port power is switched on by PS2.EXE.
4. Modem Card (if installed)

Memory count (size) appears differently from actual size.

1. Go to ¿Memory Checkout—.

System configuration does not match the installed devices.

1. Go to ¿Checking the Installed Devices List—.

System hangs intermittently.

1. Go to ¿Intermittent Problems—.

Peripheral Device Related Symptoms:

Symptom/Error

FRU/Action

External display does not work correctly.

1. See ¿External Display Self-Test— in the ¿Common Devices Checkout— section.

Printer problems.

1. Run Printer Self-test.
2. System Board
3. Parallel Port Device
4. Cable

Serial or parallel port device problems.

1. Device
2. Device Cable
3. System Board

Search Keywords

Hint Category

Hardware Maintenance Information

Date Created

28-11-96

Last Updated

06-04-98

Revision Date

03-04-99

Brand

IBM ThinkPad

Product Family

ThinkPad 340

Machine Type

2610

Model

Various

TypeModel

Retain Tip (if applicable)

N/A

Reverse Doclinks
and Admin Purposes

Symptom/Error	FRU/Action
Flicker	1. Do not replace any FRUs. In certain brightness/contrast settings, screen flicker can be seen because of technical limitations.
No beep, power-on indicator on, and a blank LCD during POST.	1. System Board
- LCD backlight not working - LCD too dark - LCD brightness cannot be adjusted - LCD contrast cannot be adjusted.	1. Reseat the LCD connector. (See ¿1090 LCD Assembly—.) 2. LCD Assembly
- LCD screen unreadable, or - Characters missing pels, or - Screen abnormal, or - Wrong characters displayed.	1. Reseat the LCD connector. (See ¿1090 LCD Assembly—.) 2. System Board 3. LCD Assembly
LCD has extra horizontal or vertical lines displayed.	1. LCD Assembly

Symptom/Error	FRU/Action
Keyboard (one or more keys) does not work, or works intermittently.	1. Reseat the three keyboard cables. 2. Reseat the keytop. Ensure the rubber dome under the keytop is straight and in the correct direction, with the larger radius on the top. 3. Keyboard 4. System Board
TrackPoint II or III does not work.	1. Go to ¿TrackPoint II and III Checkout—. 2. Keyboard 3. System Board
Pointer moves automatically or does not work correctly.	1. See ¿TrackPoint II and III Checkout—.

Symptom/Error	FRU/Action
Indicator incorrectly remains off or on, but system runs correctly.	1. Reseat the indicator card. 2. Indicator Card 3. System Board
Battery power status indicator blinks from green, yellow, to orange.	1. Check thata correct battery is installed. 2. Battery Pack 3. System Board

Symptom/Error	FRU/Action
Power shut down during operation.	1. Go to ¿Power Systems Checkout—. 2. Battery Pack 3. Remove the battery pack and let it cool for two hours. 4. Power Sources
The system will not power-off. (See ¿Reset Pushbutton—.)	1. Press the Reset pushbutton. 2. System Board

Symptom/Error	FRU/Action
The system will not suspend or resume by opening or closing the keyboard.	1. Go to ¿Suspend Mode— on page 8 and check that the computer can enter suspend mode. 2. Go to the Easy-Setup screen and press Fn+ 4. If the computer enters suspend mode, suspect that the application program is defective. 3. System Board
The system will not suspend or resume by opening or closing the LCD.	1. Go to ¿Suspend Mode— on page 8 and that check that the computer can enter suspend mode. 2. Go to the Easy-Setup screen and press Fn+ 4. If the computer enters suspend mode, suspect that the application program is defective. 3. System Board
Battery Fuel-Gauge does not go higher than 90%.	1. Go to ¿Checking the Battery Pack— and see the note.
Modem problems. (If installed)	1. Run the Internal Modem Test. 2. Check that the port is set to enable in Easy Setup. 3. Check that the port power is switched on by PS2.EXE. 4. Modem Card (if installed)
Memory count (size) appears differently from actual size.	1. Go to ¿Memory Checkout—.
System configuration does not match the installed devices.	1. Go to ¿Checking the Installed Devices List—.
System hangs intermittently.	1. Go to ¿Intermittent Problems—.

Symptom/Error	FRU/Action
External display does not work correctly.	1. See ¿External Display Self-Test— in the ¿Common Devices Checkout— section.
Printer problems.	1. Run Printer Self-test. 2. System Board 3. Parallel Port Device 4. Cable
Serial or parallel port device problems.	1. Device 2. Device Cable 3. System Board

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	28-11-96
	Last Updated	06-04-98
	Revision Date	03-04-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 340
	Machine Type	2610
	Model	Various
	TypeModel
	Retain Tip (if applicable)	N/A
	Reverse Doclinks and Admin Purposes