Lenovo W530, T530i, 2394F1U, 244723U manual No-beep symptoms, LCD-related symptoms

Table 4. Beep symptoms (continued)

Symptom or error	FRU or action, in sequence
Five short beeps	System board
One long and two short beeps	System board

No-beep symptoms

Table 5. No-beep symptoms

Symptom or error	FRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no	1.	Make sure that every connector is connected
POST.		tightly and correctly.
	2.	Memory module
	3.	System board
No beep, power-on indicator on, and LCD blank during	1.	Reseat the memory module.
POST.	2.	System board
The power-on password prompt appears.	A power-on password or a supervisor password is set.
	Type the password and press Enter.
The hard-disk password prompt appears.	A hard-disk password is set. Type the password and
	press Enter.

LCD-related symptoms

Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced.

Notes:

•This policy applies to all ThinkPad notebook computers purchased on 1 January, 2008 or later.

•Lenovo will not provide warranty replacement if the LCD is within specifications because we cannot guarantee that any replacement LCD will have zero pixel defects.

•One pixel consists of R, G, B sub-pixels.

Table 6. LCD-related symptoms

Symptom or error		FRU or action, in sequence
No beep, power-on indicator on, and a blank LCD during		System board
POST.
• LCD backlight not working		1.	Reseat the LCD connectors.
•	LCD too dark	2.	LCD assembly
• LCD brightness cannot be adjusted.		3.	System board
• LCD contrast cannot be adjusted.
•	LCD screen unreadable	1.	See important note for “LCD-related symptoms.”
•	Characters missing pixels	2.	Reseat all LCD connectors.
•	Screen abnormal	3.	LCD assembly
•	Wrong color displayed	4.	System board
Horizontal or vertical lines displayed on LCD		LCD assembly

44Hardware Maintenance Manual