To use the diagnostic medium you have created, do one of the following:

•If you have created the bootable diagnostic medium on a USB device, do the following:

1.Attach the USB device to the computer.

2.Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page 28, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 35 for error code descriptions and troubleshooting hints.

3.When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot Menu window opens, release the F12 key.

4.Use the arrow keys to select USB HDD and then press Enter. The diagnostic program will be launched automatically.

5.Follow the instructions on the screen to use the diagnostic program.

•If you have created the bootable diagnostic medium on a CD, do the following:

1.Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page 28, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 35 for error code descriptions and troubleshooting hints.

2.Insert the CD into an external optical drive.

3.Restart the computer.

4.When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot Menu window opens, release the F12 key.

5.Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program will be launched automatically.

6.Follow the instructions on the screen to use the diagnostic program.

Power system checkout

To verify a symptom, do the following:

1.Connect the ac power adapter and turn on the computer.

2.Check that power is supplied when you turn on the computer.

3.Turn off the computer and disconnect the ac power adapter.

4.Check that the battery pack supplies power when you turn on the computer.

If you suspect a power problem, see the appropriate one of the following power supply checkouts:

•“Checking the ac power adapter” on page 28

•“Checking operational charging” on page 29

•“Checking the battery pack” on page 29

•“Checking the backup battery” on page 29

Checking the ac power adapter

You are here because the computer fails only when the ac power adapter is used.

•If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation.

•If the computer does not charge during operation, go to “Checking operational charging” on page 29

To check the ac power adapter, do the following:

1.Unplug the ac power adapter cable from the computer.

2.Measure the output voltage at the plug of the ac power adapter cable. See the following figure:

28Hardware Maintenance Manual

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Lenovo T430U manual Power system checkout, Checking the ac power adapter
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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.
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