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

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Lenovo 27763CU, 27763PU, 27763DU manual LCD-related symptoms
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27763CU, 27763DU, 27763PU specifications

The Lenovo models 27763PU, 27763DU, and 27763CU are part of the highly regarded ThinkPad series, known for their robustness and performance in business environments. Each of these laptops embodies Lenovo's commitment to delivering high-quality devices that cater to various user needs, from professionals to students.

The Lenovo 27763PU features a 14-inch display with Full HD resolution, providing crisp visuals ideal for work and multimedia. This model is powered by an Intel Core i5 processor, ensuring smooth multitasking and efficient performance across demanding applications. With up to 16GB of RAM and a fast SSD for storage, users can expect quick boot times and rapid file access. The laptop's lightweight design makes it portable, suitable for on-the-go professionals.

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The Lenovo 27763CU builds on the strengths of its predecessors by incorporating advanced technologies that enhance user experience. This model includes Lenovo's unique Rapid Charge technology, which allows the battery to charge quickly, offering hours of usage from just a short charging session. The inclusion of a backlit keyboard ensures productivity in low-light environments, while the precision touchpad and optional touchscreen display provide intuitive navigation and interaction.

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In summary, the Lenovo 27763PU, 27763DU, and 27763CU deliver impressive performance, cutting-edge features, and a focus on security, appealing to a diverse range of users. Whether for business, education, or personal use, these laptops stand out as excellent choices for those looking for reliability and efficiency.
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