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.

 

 

 

 

 

 

46ThinkPad SL400 and SL500Hardware Maintenance Manual

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Image 54
IBM SL500 manual LCD-related symptoms

SL500 specifications

The IBM SL500 is a notable entry in the realm of high-capacity tape libraries, designed for organizations that require efficient data backup, archiving, and management solutions. It stands out due to its robust feature set, innovative technologies, and the capability to evolve with an organization's growing data needs.

One of the principal features of the IBM SL500 is its modular architecture, allowing businesses to start with a basic configuration and expand as their requirements grow. This scalability is crucial in accommodating increasing data volumes without requiring a complete system overhaul. The library supports a variety of tape formats, including the IBM LTO (Linear Tape-Open) technology, known for its high capacity and reliability.

The SL500 also integrates advanced features like a user-friendly graphical interface for monitoring and managing tape operations. This interface simplifies administrative tasks and provides real-time insights into the system's performance, allowing IT professionals to manage data more efficiently. Additionally, the SL500 comes equipped with automated handling capabilities, such as robotic arms that minimize manual intervention, thus reducing the risk of human error and improving operational efficiency.

In terms of scalability, the SL500 supports multiple drive configurations and slots for cartridges, which can house thousands of tape cartridges, enabling organizations to tailor the system to their unique data storage needs. It can include up to 10 tape drives and house more than 7,000 cartridges, offering a massive storage capacity that is both reliable and secure.

The library's robust security features further enhance its appeal. It includes data encryption capabilities to protect sensitive information stored on tapes, ensuring compliance with various regulatory standards. Moreover, its integration capabilities with IBM Spectrum Protect and other data protection software allow organizations to streamline their backup and recovery processes.

Another significant aspect of the SL500 is its energy-efficient design. IBM has incorporated energy-saving features in the library, reducing operational costs and environmental impact. This forward-thinking approach reflects a growing need within data management solutions to balance performance with sustainability.

In summary, the IBM SL500 is an advanced tape library system that combines scalability, automation, security, and energy efficiency. With its various features and capabilities, it is an appealing choice for businesses seeking to enhance their data management strategies while accommodating future growth.