TP 701C/CS - Miscellaneous Symptoms

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Service Hints & Tips

Document ID: GSMH-3BNJA9

TP 701C/CS - Miscellaneous Symptoms

Applicable to: World-Wide

LCD-Related (Video) Symptoms:
Note that LCD-related symptoms might be a result of software problems. Therefore, before working on hardware to correct video problems, make sure that the system has the latest versions of the video drivers installed. Systems that do not have the latest versions of video drivers might experience symptoms such as random extra pixels.

Note:
To check the versions of the video drivers, follow these steps:
- In DOS.

- Drivers display their version level when they are loaded. To check them after they have been loaded, look in CONFIG.SYS or AUTOEXEC.BAT files for video driver information.

- In Windows.

Drivers installed using the video driver installation utility place an icon in the Control Panel , in the Main group. Double-click on the ChipsCPL icon to display the driver dialog box. Choose the Version button to display the driver level.

Symptom/Error

FRU/Action

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

1. Adjust contrast.
2. Top System Board.
3. Bottom System Board.

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

1. Reseat LCD connectors.
2. Reseat inverter card.
3. Inverter card.
4. LCD Assembly.

LCD contrast cannot be adjusted (TP701C only).

1. Reseat LCD connectors.
2. Top System Board.
3. LCD Assembly.

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

See important note for ¿Disassembling the LCD Assembly—.~
1. Check that the latest versions of the drivers are installed.
2. Reseat LCD connectors.
3. Bottom System Board.
4. LCD Assembly.

LCD has extra horizontal or vertical lines displayed.

1. LCD Assembly.

Blank LCD, system runs correctly during POST.

1. Check display type. (Press Fn+ F1 to enter the configuration utility., and then reset Display type to LCD.)

Keyboard and Trackpoint II Symptoms:

Symptom/Error

FRU/Action

Keyboard (one or more keys) does not work.

1. Reseat the two larger keyboard cables.
2. Keyboard.
3. Top System Board.

Trackpoint III does not work or the pointer moves automatically ('drifts—) or does not work correctly.

1. Go to 'Trackpoint III. Checkout—.

Multiport II Related Symptoms:
Before testing or replacing the Multiport II, ensure that the customer installed the Multiport II. while the computer. was powered-off or in Suspend mode. Make sure the problems occur when the Multiport II has been installed correctly.

Symptom/Error

FRU/Action

Devices connected to the Multiport II do not work correctly.

1. Check the device connectors to make sure that they are connected correctly.
2. Check the cables to make sure they are not defective or damaged.
3. Go to 'Multiport II Checkout—.

Problems occur when the Multiport II is connected or removed (unlatched).

1. Verify that the Multiport II is correctly seated and that the latches are engaged properly.
2. Go to 'Multiport II Checkout—.

Power problems occur when the Multiport II is connected to the computer.

1. Remove and then reattach the Ac Adapter to the computer or the Multiport II.
2. Multiport II.
3. Top System Board.

Indicator Related Symptoms:

Symptom/Error

FRU/Action

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

1. Reseat the inverter card.
2. Inverter card.
3. Top System Board.

Battery status indicator blinks green and beeps three times at power-on or Resume.

1. Check that a fully charged battery is installed.
2. Battery Pack
3. Reseat Top and Bottom System Boards together.
4. Top System Board.
5. Bottom System Board.

Battery status indicator blinks green at power-on.

1. Check the card-to-card connection. Reseat Top and Bottom System Boards together.
2. Top System Board.
3. Bottom System Board.

Battery status indicator does not turn on when battery fuel gauge is over 90% but less than 100%.

1. This is normal operation if charging continues. Leave the computer charging, and then recheck the battery fuel gauge a short time later to see whether the charge has increased.

Power Related Symptoms:

Symptom/Error

FRU/Action

Power shut down during operation.

1. Go to 'Power Systems Checkout—.
2. Battery Pack
3. Power sources
4. Top System Board

The system will not power-off.

1. If you are in Suspend mode, resume by pressing Fn. Then, try to power-off.
2. Disconnect the computer from ac power.
3. Remove the battery.
4. If problem occurs consistently, replace the Top System Board.

Battery pack charges, but the battery status indicator does not light.

1. Reseat the Inverter Card.
2. Replace the Inverter Card.

Battery pack does not charge, the battery status indicator does not light, and the battery fuel gauge is less than 90%.

1. Check the AC adapter connection. Make sure that the computer is powered-on or in Suspend mode.
2. Check the Configuration Utility to ensure that the AC adapter is supplying the correct voltage level.
3. Check the AC adapter.
4. Make sure that the computer is within the operational temperature range.
5. Change the AC adapter.
6. Replace the Battery Pack.
7. Replace the Top System Board.

Function Related Symptoms:

Symptom/Error

FRU/Action

The system will not enter &Sus. mode or resume by opening or closing the LCD.

1. Check the configuration utility to ensure that the Suspend on Lid Close function is enabled.
2. Check that the computer can enter Suspend mode by pressing Fn+ F4.
3. Top System Board.
4. Bottom System Board.

Memory count (size) appears different from actual size.

1. Go to 'Memory Checkout—.

System configuration does not match the installed devices.

1. Go to 'Checking Installed Devices—.

System stops intermittently.

1. Go to 'Intermittent Problems—.

Infrared Related Symptoms:
See 'Infrared Transreceiver Checkout— for information on the infrared transreceiver and infrared transreceiver checkout.

Audio Related Symptoms:

Symptom/Error

FRU/Action

You cannot hear any sound.

1. In the Configuration Utility, check the volume level and the settings for Audio Power and Mute.
2. Attach external speakers or headphones and check for sound:
- If the external speakers or headphones work, replace the internal
speaker.
- If the external speakers or headphones do not work, replace the Top System Board.

Internal microphone does not record.

1. Check the application's recording source and level.
2. Attach an external microphone and check for recording:
- If the external microphone works, replace the internal microphone.
- If the external microphone does not work, replace the Top System Board.

Other audio problems.

1. Replace the Top System Board.

Peripheral Device Related Symptoms:
Before testing or replacing any peripheral device, go into the Configuration Utility and ensure that all of the configurations are correct. Also, check applications to ensure that devices are configured correctly.

Symptom/Error

FRU/Action

External display does not work correctly.

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

Printer problems.

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

Serial or parallel port device problems.

1. Device.
2. Device Cable.
3. Top System Board.

Search Keywords

Hint Category

Hardware Maintenance Information

Date Created

22-11-96

Last Updated

27-08-98

Revision Date

18-08-99

Brand

IBM ThinkPad

Product Family

ThinkPad 701

Machine Type

2630

Model

Various

TypeModel

Retain Tip (if applicable)

N/A

Reverse Doclinks
and Admin Purposes

Symptom/Error	FRU/Action
No beep, power-on indicator on, and a blank LCD during POST.	1. Adjust contrast. 2. Top System Board. 3. Bottom System Board.
- LCD backlight not working, or - LCD too dark, or - LCD brightness cannot be adjusted.	1. Reseat LCD connectors. 2. Reseat inverter card. 3. Inverter card. 4. LCD Assembly.
LCD contrast cannot be adjusted (TP701C only).	1. Reseat LCD connectors. 2. Top System Board. 3. LCD Assembly.
- LCD screen unreadable, or - Characters missing pels, or - Screen abnormal, or - Wrong color displayed.	See important note for ¿Disassembling the LCD Assembly—.~ 1. Check that the latest versions of the drivers are installed. 2. Reseat LCD connectors. 3. Bottom System Board. 4. LCD Assembly.
LCD has extra horizontal or vertical lines displayed.	1. LCD Assembly.
Blank LCD, system runs correctly during POST.	1. Check display type. (Press Fn+ F1 to enter the configuration utility., and then reset Display type to LCD.)

Symptom/Error	FRU/Action
Keyboard (one or more keys) does not work.	1. Reseat the two larger keyboard cables. 2. Keyboard. 3. Top System Board.
Trackpoint III does not work or the pointer moves automatically ('drifts—) or does not work correctly.	1. Go to 'Trackpoint III. Checkout—.

Symptom/Error	FRU/Action
Devices connected to the Multiport II do not work correctly.	1. Check the device connectors to make sure that they are connected correctly. 2. Check the cables to make sure they are not defective or damaged. 3. Go to 'Multiport II Checkout—.
Problems occur when the Multiport II is connected or removed (unlatched).	1. Verify that the Multiport II is correctly seated and that the latches are engaged properly. 2. Go to 'Multiport II Checkout—.
Power problems occur when the Multiport II is connected to the computer.	1. Remove and then reattach the Ac Adapter to the computer or the Multiport II. 2. Multiport II. 3. Top System Board.

Symptom/Error	FRU/Action
Indicator incorrectly remains on or off, but system runs correctly.	1. Reseat the inverter card. 2. Inverter card. 3. Top System Board.
Battery status indicator blinks green and beeps three times at power-on or Resume.	1. Check that a fully charged battery is installed. 2. Battery Pack 3. Reseat Top and Bottom System Boards together. 4. Top System Board. 5. Bottom System Board.
Battery status indicator blinks green at power-on.	1. Check the card-to-card connection. Reseat Top and Bottom System Boards together. 2. Top System Board. 3. Bottom System Board.
Battery status indicator does not turn on when battery fuel gauge is over 90% but less than 100%.	1. This is normal operation if charging continues. Leave the computer charging, and then recheck the battery fuel gauge a short time later to see whether the charge has increased.

Symptom/Error	FRU/Action
Power shut down during operation.	1. Go to 'Power Systems Checkout—. 2. Battery Pack 3. Power sources 4. Top System Board
The system will not power-off.	1. If you are in Suspend mode, resume by pressing Fn. Then, try to power-off. 2. Disconnect the computer from ac power. 3. Remove the battery. 4. If problem occurs consistently, replace the Top System Board.
Battery pack charges, but the battery status indicator does not light.	1. Reseat the Inverter Card. 2. Replace the Inverter Card.
Battery pack does not charge, the battery status indicator does not light, and the battery fuel gauge is less than 90%.	1. Check the AC adapter connection. Make sure that the computer is powered-on or in Suspend mode. 2. Check the Configuration Utility to ensure that the AC adapter is supplying the correct voltage level. 3. Check the AC adapter. 4. Make sure that the computer is within the operational temperature range. 5. Change the AC adapter. 6. Replace the Battery Pack. 7. Replace the Top System Board.

Symptom/Error	FRU/Action
The system will not enter &Sus. mode or resume by opening or closing the LCD.	1. Check the configuration utility to ensure that the Suspend on Lid Close function is enabled. 2. Check that the computer can enter Suspend mode by pressing Fn+ F4. 3. Top System Board. 4. Bottom System Board.
Memory count (size) appears different from actual size.	1. Go to 'Memory Checkout—.
System configuration does not match the installed devices.	1. Go to 'Checking Installed Devices—.
System stops intermittently.	1. Go to 'Intermittent Problems—.

Symptom/Error	FRU/Action
You cannot hear any sound.	1. In the Configuration Utility, check the volume level and the settings for Audio Power and Mute. 2. Attach external speakers or headphones and check for sound: - If the external speakers or headphones work, replace the internal speaker. - If the external speakers or headphones do not work, replace the Top System Board.
Internal microphone does not record.	1. Check the application's recording source and level. 2. Attach an external microphone and check for recording: - If the external microphone works, replace the internal microphone. - If the external microphone does not work, replace the Top System Board.
Other audio problems.	1. Replace the Top System Board.

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

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	22-11-96
	Last Updated	27-08-98
	Revision Date	18-08-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 701
	Machine Type	2630
	Model	Various
	TypeModel
	Retain Tip (if applicable)	N/A
	Reverse Doclinks and Admin Purposes