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

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

Table 5. 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.

 

 

 

 

Intermittent problems

Intermittent system hang problems can be due to a variety of causes that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a problem recurs.

Undetermined problems

If the diagnostic tests did not identify the device that has failed, if wrong devices are installed, or if the system simply is not operating, follow these procedures to isolate the failing FRU (do not isolate FRUs that have no defects).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. (See “Power system checkout” on page 28)

1.Turn off the computer.

2.Visually check each FRU for damage. Replace any damaged FRU.

3.Remove or disconnect all of the following devices:

a.Non-ThinkPad devices

b.Printer, mouse, and other external devices

c.Hard disk drive

d.External diskette drive or optical drive

e.memory module on the left memory slot, if there is one

f.PC Cards

4.Turn on the computer.

5.Determine whether the problem has been solved.

6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7.If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):

38Hardware Maintenance Manual

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Image 44
Lenovo T430U manual Intermittent problems, Undetermined problems, Reseat the LCD connectors, LCD assembly

T430U specifications

The Lenovo T430U is a notable entry in Lenovo's ThinkPad series, designed to offer a blend of power, portability, and professional features suitable for business users and professionals on the go. This ultrabook stands out with its combination of performance, durability, and lightweight design.

One of the key features of the T430U is its high-definition display. The 14-inch screen offers a resolution of 1366 x 768 pixels, providing bright and clear visuals that enhance productivity. The anti-glare technology minimizes reflections, making it easier to work in various lighting conditions. The keyboard is another highlight, as it retains the signature ThinkPad style with customizable keys, a responsive feel, and an ergonomic design that ensures comfort during prolonged typing sessions.

Under the hood, the T430U is powered by Intel's third-generation Core processors, which deliver impressive performance while maintaining energy efficiency. The ultrabook can be configured with up to 8GB of RAM and offers solid-state drive (SSD) options for faster data access and boot times. This combination makes the T430U capable of handling multitasking with ease, whether it's running multiple applications or managing large datasets.

The T430U features advanced connectivity options, including USB 3.0 ports, an HDMI output, and Ethernet capabilities, ensuring compatibility with a wide range of peripherals and networks. Additionally, it incorporates Intel's Wi-Fi technology, providing reliable wireless connectivity for users working in diverse environments.

Security is a priority for Lenovo, and the T430U is equipped with features like a fingerprint reader and an integrated Trusted Platform Module (TPM) for enhanced data protection. These security measures make it a popular choice for businesses looking to safeguard sensitive information.

Battery life is another crucial aspect of the T430U, boasting an impressive runtime that allows users to work longer without frequent recharging. With its lightweight design, durable construction, and robust build quality, the T430U stands as a reliable partner for professionals who need to stay productive while on the move.

Overall, the Lenovo T430U exemplifies a perfect balance between performance, durability, and usability, making it a smart choice for anyone in need of a high-quality ultrabook that can keep up with the demands of modern work environments. Its combination of business-focused features, portability, and security empowers users to achieve their goals efficiently.