Checkout guide

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: v Replace the system board.

vIf the problem persists, go to “Product overview” on page 30.

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 Meter shows that less than 95% 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 Meter 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 Meter 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:

General descriptions

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Image 33
Lenovo N100 manual Checking operational charging, Checking the battery pack, Pin Voltage V dc

N100 specifications

The Lenovo N100 is a budget-friendly laptop that embodies practicality without sacrificing essential performance features. Designed for students and professionals alike, it combines mobility with reliability, making it a suitable choice for everyday computing tasks.

One of the standout features of the Lenovo N100 is its efficient Intel processor. Depending on the specific configuration, users can expect either the Intel Celeron or Pentium M processors, providing sufficient power for basic applications, web browsing, and productivity software. The laptop is equipped with up to 1GB of RAM, ensuring smooth multitasking capabilities for users working on several applications simultaneously.

In terms of storage, the N100 includes options that range from 40GB to 80GB hard drives. This capacity caters well to the needs of users who require ample storage for documents, media, and various software applications. The integrated CD/DVD drive further enhances its versatility, enabling users to read and write discs, which is particularly useful for those who rely on physical media.

The Lenovo N100 features a 14-inch display with a resolution of 1280x800 pixels, providing a decent viewing experience for its size. The screen's size strikes a good balance between portability and usability, making it easy to work on for extended periods without straining the eyes. Additionally, the inbuilt Intel Graphics Media Accelerator 900 offers sufficient graphical performance for light gaming and multimedia tasks.

Connectivity options on the Lenovo N100 include several USB 2.0 ports, an Ethernet port, and a VGA output, which allow for connecting various peripherals and external displays. The laptop also includes a 56K modem, making it adaptable to older connectivity setups. Integration of Wi-Fi support provides users the freedom to connect to wireless networks, enhancing functionality for both home and office use.

Another significant characteristic of the N100 is its durable design. While its aesthetics may be straightforward, the solid build quality ensures that it withstands the rigors of daily use. This toughness is complemented by a battery life that can last several hours, allowing users the flexibility to work on the go without the constant need for a power outlet.

In conclusion, the Lenovo N100 stands out as a reliable and affordable laptop option, equipped with essential features that cater to basic computing needs. Its combination of performance, storage, and connectivity makes it a practical choice for users looking for value and reliability in their laptop purchase.