TP 765D/L - Other Related Symptoms

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TP 765D/L - Other Related Symptoms

Applicable to: World-Wide

LCD-Related Symptoms

And also:

Keyboard- or TrackPoint III-Related Symptoms
Indicator-Related Symptoms
LCD Information Panel-Related Symptoms
Power-Related Symptoms
Function/Audio-Related Symptoms
DSP-Related Symptoms
ESS-Related Symptoms
Peripheral-Device-Related Symptoms
Infrared-Related Symptoms
PCMCIA-Related Symptoms
Other Symptoms
Intermittent Problems

Important

The LCD for the notebook computer contains over 2,359,296 thin-film transistors (TFTs).
A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT
LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should
be replaced if the number of missing, discolored, or lighted dots in any background is 21 or more.

Symptom / Error

FRU / Action in Sequence

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

1. Reseat the CPU card.
2. DC/DC card
3. Video card
4. System board
5. LCD cable assembly

LCD backlight not working
LCD too dark
LCD brightness cannot be adjusted (TFT)

1. Reseat the LCD connectors.
2. LCD assembly
3. DC/DC card
4. Cable for inverter card
5. Inverter card

LCD screen unreadable
Characters missing pels
Screen abnormal
Wrong color displayed

1. See important note for 'LCD-Related Symptoms.´
2. Reseat all LCD connectors.
3. LCD assembly
4. System board
5. Video card

LCD has extra horizontal or vertical lines displayed.

1. LCD cable assembly
2. LCD assembly

Keyboard- or TrackPoint III-Related Symptoms

Symptom / Error

FRU / Action in Sequence

Keyboard (one or more keys) does not work.

1. Reseat the keyboard cable on the video card.
2. Reseat the three keyboard cables on the keyboard card.
3. Keyboard
4. Video card
5. System board

TrackPoint III does not work.

1. Reseat the keyboard connector on the video card.
2. Go to -- TrackPoint III Checkout -
3. Keyboard
4. Video card
5. System board

Pointer moves automatically or does not work correctly.

See -- TrackPoint III Checkpoint --

Indicator-Related Symptoms

Symptom / Error

FRU / Action in Sequence

Indicator incorrectly remains off or on, but system runs correctly

1. Reseat the LCD connector on the video card.
2. LCD cable assembly
3. Video card
4. System board

LCD Information Panel-Related Symptoms

Symptom / Error

FRU / Action in Sequence

An icon in the LCD information panel remains off or on, but the
system runs correctly.

1. Reseat the keyboard connector on the video card.
2. Reseat the LCD information panel cable on the keyboard card.
3. Keyboard
4. Video card
5. System board

Power-Related Symptoms

Symptom / Error

FRU / Action in Sequence

Power shuts down during operation.

1. Go to -- Power Systems Checkout --.
2. Battery pack
3. Remove the battery pack and let it cool for 2 hours.
4. DC/DC card
5. Power sources

The system does not power off.
(See -- Power Shutdown Switch --.)

1. Press the power shutdown switch.
2. System board

Function/Audio-Related Symptoms

Symptom / Error

FRU / Action in Sequence

The system does not suspend or resume when the keyboard is opened or closed.

1. Go to -- Suspend Mode --, and check that the computer can enter suspend mode.
2. Boot an operating system and press Fn+ F4. If the computer enters suspend mode, suspect that the application program is not
working properly.
3. Keyboard card
4. Video card
5. System board

The system does not suspend or resume when the LCD is closed or opened.

1. Go to -- Suspend Mode --, and check that the computer can enter suspend mode.
2. Boot an operating system and press Fn+ F4. If the computer enters suspend mode, suspect that the application program is not working properly.
3. LCD assembly
4. Video card
5. System board

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

Go to -- Checking the Battery Pack -- and see the note.

Memory count (size) appears different from actual size.

Go to -- Memory Checkout --.

System configuration does not match the installed devices.

Go to -- Checking the Installed Devices List --.

System hangs intermittently.

Go to 'Intermittent Problems´

DSP-Related Symptoms

Symptom / Error

FRU / Action in Sequence

In OS/2, DOS, or Windows multimedia programs, no sound comes from the computer. (Only system beeps heard at power-on.)

1. Reseat the DSP card.
2. Go to -- 1170 DSP Card or ESS Card -- and check the DSP card.
3. Check that the device driver is installed correctly.

In OS/2, DOS, or Windows, the modem does not work.

1. Check that the DSP Modem is active.
OS/2 and Windows:
Click the DSP Modem icon in the ThinkPad Configuration program.
DOS:
Run the MWMODEM ON command.
2. Reseat the DAA module.

ESS-Related Symptoms

Symptom / Error

FRU / Action in Sequence

In OS/2, DOS, or Windows multimedia programs, no sound comes from the computer. (Only system beeps are heard at power-on.)

1. Reseat the audio (ESS) card.
2. Go to -- Audio (ESS) Card Checkout (765L) -- and check the ESS card.
3. Check that the device driver is installed correctly.

Peripheral-Device-Related Symptoms

Symptom / Error

FRU / Action in Sequence

External display does not work correctly.

See -- External Display Self-Test --.

Printer problems.

1. Run printer self-test.
2. Parallel port device
3. Cable
4. System board

Serial or parallel port device problems.

1. Device
2. Device cable
3. System board

External diskette drive does not work correctly, or internal diskette drive is not recognized.

1. Reseat the external FDD connector.

Note: When reseating the external FDD connector,
a. Remove the connector.
b. Insert the flexible cable straight until the white line aligns
with the edge of the connector.
c. Replace the screws of the connector.
Be careful not to damage the edge of the flexible cable when inserting it into the connector.
2. External diskette drive
3. Make sure that the diskette is not damaged.

Infrared-Related Symptoms

Symptom / Error

FRU / Action in Sequence

Unable to communicate using the Infrared (IR) Port.

1. Make sure the setup for the IR is correct.
2. Make sure there are no fluorescent lights near the computer.
The computer may receive optical noise from the fluorescent light.
3. Reseat the IR unit.
4. Run the advanced diagnostic test. (see -- Running the Diagnostics --) If an error occurs and a FRU code is displayed,
replace the parts shown by the FRU code.

PCMCIA-Related Symptoms

Symptom / Error

FRU / Action in Sequence

PC Card does not work in either upper slot or the lower slot.

Diagnostic error code:
DEV 080
ERR 33
FRU 7210

1. Reseat the PCMCIA flexible cable before replacing the PCMCIA slot. (See -- 1200 PCMCIA Slot Assembly --)
2. PCMCIA slot assembly

PCMCIA slot pin is damaged.

PCMCIA slot assembly

CardBus card does not work.

1. Reseat the PC Card
2. Check the PC Card is enabled in the ThinkPad Configuration program
3. Reseat the PCMCIA flexible cable (See -- 1200 PCMCIA Slot Assembly --)

Other Symptoms

Symptom / Error

FRU / Action in Sequence

Errors occur only when the port replicator is used.

See -- Port Replicator Checkout --.

Note: If you cannot find a symptom or error in this list and the problem persists, see 'Undetermined Problems.´

Intermittent Problems

Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect,such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing the intermittent problem, do the following:

1.

Run the advanced diagnostic test for the system board in loop mode at least 10 times.

2.

If no error is detected, do not replace any FRUs.

3.

If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist

Search Keywords

Hint Category

Hardware Maintenance Information

Date Created

07-07-97

Last Updated

19-08-98

Revision Date

18-08-99

Brand

IBM ThinkPad

Product Family

ThinkPad 765L, ThinkPad 765D

Machine Type

9546, 9547

Model

Various

TypeModel

Retain Tip (if applicable)

Reverse Doclinks
and Admin Purposes

	Important
	The LCD for the notebook computer contains over 2,359,296 thin-film transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is 21 or more.

Symptom / Error	FRU / Action in Sequence
No beep, power-on indicator on, and a blank LCD during POST.	1. Reseat the CPU card. 2. DC/DC card 3. Video card 4. System board 5. LCD cable assembly
LCD backlight not working LCD too dark LCD brightness cannot be adjusted (TFT)	1. Reseat the LCD connectors. 2. LCD assembly 3. DC/DC card 4. Cable for inverter card 5. Inverter card
LCD screen unreadable Characters missing pels Screen abnormal Wrong color displayed	1. See important note for 'LCD-Related Symptoms.´ 2. Reseat all LCD connectors. 3. LCD assembly 4. System board 5. Video card
LCD has extra horizontal or vertical lines displayed.	1. LCD cable assembly 2. LCD assembly

Symptom / Error	FRU / Action in Sequence
Keyboard (one or more keys) does not work.	1. Reseat the keyboard cable on the video card. 2. Reseat the three keyboard cables on the keyboard card. 3. Keyboard 4. Video card 5. System board
TrackPoint III does not work.	1. Reseat the keyboard connector on the video card. 2. Go to -- TrackPoint III Checkout - 3. Keyboard 4. Video card 5. System board
Pointer moves automatically or does not work correctly.	See -- TrackPoint III Checkpoint --

Symptom / Error	FRU / Action in Sequence
Indicator incorrectly remains off or on, but system runs correctly	1. Reseat the LCD connector on the video card. 2. LCD cable assembly 3. Video card 4. System board

Symptom / Error	FRU / Action in Sequence
An icon in the LCD information panel remains off or on, but the system runs correctly.	1. Reseat the keyboard connector on the video card. 2. Reseat the LCD information panel cable on the keyboard card. 3. Keyboard 4. Video card 5. System board

Symptom / Error	FRU / Action in Sequence
Power shuts down during operation.	1. Go to -- Power Systems Checkout --. 2. Battery pack 3. Remove the battery pack and let it cool for 2 hours. 4. DC/DC card 5. Power sources
The system does not power off. (See -- Power Shutdown Switch --.)	1. Press the power shutdown switch. 2. System board

Symptom / Error	FRU / Action in Sequence
The system does not suspend or resume when the keyboard is opened or closed.	1. Go to -- Suspend Mode --, and check that the computer can enter suspend mode. 2. Boot an operating system and press Fn+ F4. If the computer enters suspend mode, suspect that the application program is not working properly. 3. Keyboard card 4. Video card 5. System board
The system does not suspend or resume when the LCD is closed or opened.	1. Go to -- Suspend Mode --, and check that the computer can enter suspend mode. 2. Boot an operating system and press Fn+ F4. If the computer enters suspend mode, suspect that the application program is not working properly. 3. LCD assembly 4. Video card 5. System board
Battery Fuel-Gauge does not go higher than 90%.	Go to -- Checking the Battery Pack -- and see the note.
Memory count (size) appears different from actual size.	Go to -- Memory Checkout --.
System configuration does not match the installed devices.	Go to -- Checking the Installed Devices List --.
System hangs intermittently.	Go to 'Intermittent Problems´

Symptom / Error	FRU / Action in Sequence
In OS/2, DOS, or Windows multimedia programs, no sound comes from the computer. (Only system beeps heard at power-on.)	1. Reseat the DSP card. 2. Go to -- 1170 DSP Card or ESS Card -- and check the DSP card. 3. Check that the device driver is installed correctly.
In OS/2, DOS, or Windows, the modem does not work.	1. Check that the DSP Modem is active. OS/2 and Windows: Click the DSP Modem icon in the ThinkPad Configuration program. DOS: Run the MWMODEM ON command. 2. Reseat the DAA module.

Symptom / Error	FRU / Action in Sequence
External display does not work correctly.	See -- External Display Self-Test --.
Printer problems.	1. Run printer self-test. 2. Parallel port device 3. Cable 4. System board
Serial or parallel port device problems.	1. Device 2. Device cable 3. System board
External diskette drive does not work correctly, or internal diskette drive is not recognized.	1. Reseat the external FDD connector. Note: When reseating the external FDD connector, a. Remove the connector. b. Insert the flexible cable straight until the white line aligns with the edge of the connector. c. Replace the screws of the connector. Be careful not to damage the edge of the flexible cable when inserting it into the connector. 2. External diskette drive 3. Make sure that the diskette is not damaged.

Symptom / Error	FRU / Action in Sequence
Unable to communicate using the Infrared (IR) Port.	1. Make sure the setup for the IR is correct. 2. Make sure there are no fluorescent lights near the computer. The computer may receive optical noise from the fluorescent light. 3. Reseat the IR unit. 4. Run the advanced diagnostic test. (see -- Running the Diagnostics --) If an error occurs and a FRU code is displayed, replace the parts shown by the FRU code.

Symptom / Error	FRU / Action in Sequence
PC Card does not work in either upper slot or the lower slot. Diagnostic error code: DEV 080 ERR 33 FRU 7210	1. Reseat the PCMCIA flexible cable before replacing the PCMCIA slot. (See -- 1200 PCMCIA Slot Assembly --) 2. PCMCIA slot assembly
PCMCIA slot pin is damaged.	PCMCIA slot assembly
CardBus card does not work.	1. Reseat the PC Card 2. Check the PC Card is enabled in the ThinkPad Configuration program 3. Reseat the PCMCIA flexible cable (See -- 1200 PCMCIA Slot Assembly --)

Symptom / Error	FRU / Action in Sequence
Errors occur only when the port replicator is used.	See -- Port Replicator Checkout --.

1.	Run the advanced diagnostic test for the system board in loop mode at least 10 times.
2.	If no error is detected, do not replace any FRUs.
3.	If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	07-07-97
	Last Updated	19-08-98
	Revision Date	18-08-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 765L, ThinkPad 765D
	Machine Type	9546, 9547
	Model	Various
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes