3

2

1

(20V)

Pin

Voltage (V dc)

1+20

20

3Ground

Note: Output voltage of pin no.2 of the AC adapter may different from the one you are servicing.

3.If the voltage is not correct, replace the AC adapter.

4.If the voltage is acceptable, do the following:

•Replace the system board.

•If the problem persists, go to “FRU tests” on page 27.

Note: Noise from the AC adapter does not always indicate a defect.

Checking operational charging

To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon still does not turn on, replace the battery pack.

If the charge indicator still does not turn on, replace the system board. Then reinstall the battery pack. If it is still not charged, go to the next section.

Checking the battery pack

Battery charging does not start until the Power Manager Battery Gauge shows that less than 96% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life.

To check your battery, move your cursor to the Power Manager Battery Gauge icon in the icon tray of the Windows taskbar and wait for a moment (but do not click), and the percentage of battery power remaining is displayed. To get detailed information about the battery, double-click the Power Manager Battery Gauge icon.

Note: If the battery pack becomes hot, it may not be able to charge. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.

To check the battery pack, do the following:

1.Power off the computer.

2.Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). See the following figure:

Note: ThinkVantage Toolbox through the "System Health" or through Diagnostics" features will proactively determine if the replacement of battery pack is required. A "POOR" condition indicates battery replacement is required for proper operation.

Chapter 3. General checkout 29

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Lenovo EDGE 13, E31, E30 manual Checking operational charging, Checking the battery pack, Pin Voltage V dc
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EDGE 13, E30, E31 specifications

The Lenovo E30, EDGE 13, and E31 are part of Lenovo's well-regarded ThinkPad and Edge series, designed to provide users with versatility, performance, and efficiency. Each model caters to different user needs while maintaining a high standard of build quality and functionality.

The Lenovo E30 is a compact and lightweight business laptop that combines portability with powerful performance. It typically features a 13.3-inch display, making it easy to carry without sacrificing usability. The E30 is equipped with Intel's Core i5 or i7 processors, offering a balance between power and battery efficiency. The laptop supports up to 8GB of RAM, ensuring smooth multitasking for business applications, and provides ample storage options with HDD or SSD configurations available. The integrated graphics chip allows for casual gaming and efficient media playback, while its robust security features, including a fingerprint reader and Trusted Platform Module (TPM), safeguard sensitive information.

Moving to the Lenovo EDGE 13, this model features an ergonomic design and a chiclet keyboard that enhances typing comfort during long working hours. Its 13-inch display boasts vibrant visuals, suitable for both professional presentations and media consumption. The EDGE 13 is also powered by Intel Core processors and can be configured with up to 8GB of RAM, enabling users to run demanding applications seamlessly. Its dedicated graphics option may appeal to users who require enhanced performance for graphic design or gaming. Furthermore, connectivity options are plentiful, including USB 3.0 ports and HDMI output, making it easy to connect peripherals and external displays.

The Lenovo E31 is the larger counterpart in the series, featuring a 14-inch or 15-inch display that is ideal for users who prefer a more extensive screen for their tasks. This model is designed for productivity and collaborative work, with its ample screen real estate facilitating multitasking. Like its predecessors, the E31 is equipped with the latest Intel processors, ensuring it meets the demands of various software applications. The robust build quality is complemented by a spill-resistant keyboard, making it suitable for environmental challenges often faced in business settings. Lenovo emphasizes battery longevity in the E31, which allows users to work longer without needing a recharge.

All three models—E30, EDGE 13, and E31—incorporate advanced technologies such as Lenovo's RapidCharge feature for quick battery refills and enhanced cooling systems that help maintain performance levels during intense tasks. Additionally, Lenovo’s software solutions enhance productivity with tools for managing tasks and securing data.

In summary, whether opting for the portability of the E30, the stylish EDGE 13, or the expanded functionality of the E31, Lenovo offers a solid choice in the business laptop market, tailored to various user needs while ensuring reliability, performance, and security.
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