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. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is as follows:

Table 5. Minimum quantity of defective pixels required for LCD replacement on June 2006 or later manufactured ThinkPad

LCD resolution

Bright dots

Dark dots

Bright and dark dots

 

 

 

 

XGA, WXGA

5

6

6

 

 

 

 

WXGA+, SXGA+,

5

8

10

WSXGA+

 

 

 

 

 

 

 

UXGA, WUXGA,

5

13

13

QXGA

 

 

 

 

 

 

 

Notes:

vLenovo will not provide replacement if the LCD is within specification as we cannot guarantee that any replacement LCD will have zero pixel defects.

vA bright dot means a pixel is always on (white or color.)

vA dark dot means a pixel is always off (black color.)

vOne 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

System board.

blank LCD during POST.

 

 

 

 

 

v LCD backlight not working.

1.

Reseat the LCD connectors.

v

LCD too dark.

2.

LCD assembly.

v LCD brightness cannot be adjusted.

3.

System board.

v LCD contrast cannot be adjusted.

 

 

v

LCD screen unreadable.

1.

See important note for “LCD-related

v

Characters missing pixels.

 

symptoms.”

v

Screen abnormal.

2.

Reseat all LCD connectors.

v

Wrong color displayed.

3.

LCD assembly.

 

 

4.

System board.

 

 

Horizontal or vertical lines displayed on

LCD assembly.

LCD.

 

 

 

 

 

 

Related service information

45

Page 53
Image 53
Lenovo T61p manual LCD-related symptoms

T61, T61p specifications

The Lenovo T61, part of the ThinkPad series, is a notable business laptop that has garnered attention due to its durability, performance, and timeless design. Released in the mid-2000s, the T61 was engineered for professionals who require reliability and functionality on the go.

Key features of the T61 include its robust construction, conforming to military specifications for durability. This makes it resistant to extreme temperatures and shocks, ensuring it can withstand the rigors of everyday business travel. The laptop sports a classic black chassis with the signature ThinkPad styling, including the iconic red TrackPoint, which allows for precise navigation without having to use the touchpad.

In terms of performance, the T61 is equipped with Intel Core 2 Duo processors, offering solid processing power for multitasking and demanding applications. Users can choose from various configurations, with options for up to 4GB of RAM and multiple hard drive capacities, providing flexibility based on individual needs. The inclusion of Intel Graphics Media Accelerator or optional NVIDIA graphics offers decent visual performance, catering to both work and casual multimedia use.

Display options on the T61 are varied, featuring a 14.1 or 15.4-inch screen with a resolution of up to 1680x1050 pixels. Some models support a matte finish that reduces glare, enhancing usability in bright environments – a thoughtful design feature for professionals constantly on the move.

For connectivity, the T61 integrates various ports, including USB 2.0, Ethernet, and modem connections, along with options for Wi-Fi and Bluetooth. This ensures that users can stay connected seamlessly, whether in the office or on the road. Additionally, the laptop supports docking stations, allowing for a more efficient workspace setup by easily connecting multiple peripherals.

Battery life is another notable characteristic of the T61, with options for extended batteries that can provide hours of usage without needing to recharge. This mobility factor is essential for professionals who may be away from power outlets for extended periods.

Security features on the T61 include biometric fingerprint readers and optional TPM (Trusted Platform Module) functionality, emphasizing Lenovo's commitment to data security for business users.

Overall, the Lenovo T61 stands as a testament to Lenovo's dedication to creating reliable and efficient laptops tailored for professionals, balancing performance with practicality and durability. Its features and build quality have left a lasting impression, securing its place as a cherished classic in the realm of business laptops.