Table 7. Status indicators

Indicator

Meaning

 

 

Wireless LAN

Green: The wireless LAN feature is on, and the radio link is

status

ready for use.

 

Blinking green:

 

Data is being transmitted.

 

 

Wireless PAN

Green: Wireless PAN (Bluetooth wireless or Wireless USB) is

status

operational. This indicator is on when Wireless PAN is

R

on and not in suspend mode.

or

 

 

 

Wireless WAN

Green: The wireless WAN is on, and the radio link is ready for

status

use.

 

Blinking green:

 

Data is being transmitted.

 

 

Num lock

Green: The numeric keypad on the keyboard is enabled. To

 

enable or disable the keypad, press and hold the Shift

 

key, and press the NumLk (ScrLk) key.

 

 

Caps lock

Green: Caps Lock mode is enabled. To enable or disable Caps

 

Lock mode, press the Caps Lock key.

 

 

Drive in use

Green: Data is being read from or written to the hard disk

 

drive, the diskette drive, or the drive in the Serial

 

Ultrabay Slim device or Serial Ultrabay Enhanced

 

device. When this indicator is on, do not put the

 

computer into sleep (standby) mode or turn off the

 

computer.

 

Note: Do not move the system while the green drive-in-use light

 

is on. Sudden physical shock could cause drive errors.

 

 

Power on

Green: The computer is on and ready to use. This indicator

 

stays lit whenever the computer is on and is not in sleep

 

(standby) mode.

 

 

Battery status

Green: The battery is charged between 80% to 100% of the

 

capacity, and being discharged between 0% to 80% of

 

the capacity.

 

Blinking green:

 

The battery is charged between 20% to 80% of the

 

capacity, and being charged.

 

Orange:

 

The battery is charged between 5% and 20% of the

 

capacity, and being discharged.

 

Blinking orange (slow):

 

The battery is charged between 5% to 20% of the

 

capacity, and being charged.

 

Blinking orange (rapid):

 

The battery is charged between 0% to 5% of the capacity.

 

 

AC power

Green: The computer is connected to the ac power supply.

status

 

 

 

72ThinkPad T400 and R400 Hardware Maintenance Manual

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Lenovo R400 manual Indicator Meaning, Blinking green, Orange, Blinking orange slow, Blinking orange rapid

R400 specifications

The Lenovo R400 is a business laptop that was designed for professionals seeking a balance of performance, durability, and mobility. It is part of Lenovo's renowned ThinkPad series, which is known for its robust build quality and user-centric features. The R400 combines an array of technologies and characteristics that cater specifically to the demands of the modern workplace.

One of the standout features of the Lenovo R400 is its powerful processor options. Depending on the configuration, it can be equipped with Intel Core 2 Duo processors, which provide efficient multitasking capabilities and commendable performance for typical business applications. This ensures that users can run multiple applications seamlessly, whether it’s for data analysis, presentations, or video conferencing.

In terms of design, the R400 maintains the classic ThinkPad aesthetic with a lightweight chassis that makes it portable for professionals on the go. It typically weighs around 5.2 pounds, making it convenient for travel while still offering a sturdy construction that can withstand daily use. The spill-resistant keyboard is another practical characteristic, enabling users to work without worrying about minor accidents. The keyboard itself is celebrated for its comfortable layout and tactile feedback, ideal for prolonged typing sessions.

The display is another critical aspect of the R400. It generally features a 14.1-inch widescreen model, providing adequate screen real estate for productivity tasks. With a resolution of 1440 x 900, the screen delivers crisp visuals and vibrant colors, enhancing the viewing experience for both presentations and media consumption.

Connectivity is robust, with multiple USB ports, Ethernet, and optional Bluetooth capabilities that facilitate seamless communication and file transfers. The presence of both VGA and display port outputs makes it easy to connect to projectors or external monitors, an essential feature for professional presentations.

Security features also play a crucial role in the R400's design. It typically offers features like a fingerprint reader, a Trusted Platform Module (TPM) for data encryption, and a robust BIOS that helps safeguard sensitive information, which is critical for professionals handling confidential data.

In summary, the Lenovo R400 stands out as a reliable business laptop, blending performance, durability, and features tailored to meet the needs of the modern workforce. Its powerful processing capabilities, user-friendly design, and robust security measures make it an attractive choice for professionals requiring a dependable and efficient mobile computing solution.