TP 310,315 - LCD Related Symptoms

4.200 bytes

Service Hints & Tips

Document ID: YAST-3JSJ3T

TP 310,315 - LCD Related Symptoms

Applicable to: World-Wide

LCD-Related Symptoms:
Important: The notebook computer LCD contains over 921,000 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 LCD Connectors.
2. Hard disk connector board.
3. Hard disk.
4. Keyboard.
5. LCD inverter ID.
6. LCD FPC Cable.
7. LCD inverter.
8. LCD.
9. System board.

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

1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system.
2. Reseat the LCD Connectors.
3. Keyboard (if control is from the keyboard.)
4. LCD inverter ID.
5. LCD FPC Cable.
6. LCD inverter.
7. LCD.
8. System board.

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

1. Reseat all LCD Connectors.
2. LCD inverter ID.
3. LCD FPC Cable.
4. LCD inverter.
5. LCD.
6. System board.

LCD has extra horizontal or vertical lines displayed.

1. LCD.
2. LCD inverter ID.
3. LCD inverter.
4. System board.

Search Keywords

Hint Category

Hardware Maintenance Information

Date Created

08-07-97

Last Updated

19-08-98

Revision Date

18-08-99

Brand

IBM ThinkPad

Product Family

ThinkPad 310, ThinkPad 315

Machine Type

2600

Model

Various

TypeModel

Retain Tip (if applicable)

Reverse Doclinks
and Admin Purposes

Symptom/Error	FRU/Action in Sequence
No beep, power-on indicator on, and a blank LCD during POST.	1. Reseat the LCD Connectors. 2. Hard disk connector board. 3. Hard disk. 4. Keyboard. 5. LCD inverter ID. 6. LCD FPC Cable. 7. LCD inverter. 8. LCD. 9. System board.
LCD backlight not working. LCD too dark. LCD brightness cannot be adjusted. LCD contrast cannot be adjusted.	1. Enter BIOS Utility to execute Load Setup Default Settings, then reboot system. 2. Reseat the LCD Connectors. 3. Keyboard (if control is from the keyboard.) 4. LCD inverter ID. 5. LCD FPC Cable. 6. LCD inverter. 7. LCD. 8. System board.
LCD screen unreadable. Characters missing pels. Screen abnormal. Wrong color displayed.	1. Reseat all LCD Connectors. 2. LCD inverter ID. 3. LCD FPC Cable. 4. LCD inverter. 5. LCD. 6. System board.
LCD has extra horizontal or vertical lines displayed.	1. LCD. 2. LCD inverter ID. 3. LCD inverter. 4. System board.

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	08-07-97
	Last Updated	19-08-98
	Revision Date	18-08-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 310, ThinkPad 315
	Machine Type	2600
	Model	Various
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes