Grounding guidelines

Electrostatic discharge damage

Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions.

A discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Even if the spark is neither felt nor heard, damage may have occurred.

An electronic device exposed to ESD may not be affected at all and can work perfectly throughout a normal cycle. Or the device may function normally for a while, then degrade in the internal layers, reducing its life expectancy.

CAUTION: To prevent damage to the computer when you are removing or installing internal components, observe these precautions:

Keep components in their electrostatic-safe containers until you area ready to install them.

Use nonmagnetic tools.

Before touching an electronic component, discharge static electricity by using the guidelines described in this section.

Avoid touching pins, leads, and circuitry. Handle electronic components as little as possible.

If you remove a component, place it in an electrostatic-safe container.

The following table shows how humidity affects the electrostatic voltage levels generated by different activities.

CAUTION: A product can be degraded by as little as 700 V.

Typical electrostatic voltage levels

 

 

Relative humidity

 

 

 

 

 

Event

10%

40%

55%

 

 

 

 

Walking across carpet

35,000 V

15,000 V

7,500 V

 

 

 

 

Walking across vinyl floor

12,000 V

5,000 V

3,000 V

 

 

 

 

Motions of bench worker

6,000 V

800 V

400 V

 

 

 

 

Removing DIPS from plastic tube

2,000 V

700 V

400 V

 

 

 

 

Removing DIPS from vinyl tray

11,500 V

4,000 V

2,000 V

 

 

 

 

Removing DIPS from Styrofoam

14,500 V

5,000 V

3,500 V

 

 

 

 

Removing bubble pack from PCB

26,500 V

20,000 V

7,000 V

 

 

 

 

Packing PCBs in foam-lined box

21,000 V

11,000 V

5,000 V

 

 

 

 

Preliminary replacement requirements 31

Page 39
Image 39
HP B1274TU, B1201VU, B1203VU, B1200, B1205VU, B1204VU, B1298TU, B1250TU Grounding guidelines, Electrostatic discharge damage

B1290TU, B1211VU, B1237TU, B1272TU, B1251TU specifications

HP has long been a staple in the realm of personal computing, and their lineup of laptops, particularly the HP B series, exemplifies their commitment to providing high-quality, efficient devices for a variety of users. Models such as the HP B1298TU, B1232TU, B1284TU, B1210VU, and B1253TU stand out for their performance, design, and user-centric features.

The HP B1298TU is equipped with a robust Intel processor, delivering remarkable processing capabilities suited for multitasking and everyday use. Its 15.6-inch display offers crisp and clear visuals, making it ideal for both work and entertainment. This model emphasizes durability, boasting a sturdy chassis designed to withstand the rigors of daily use while maintaining a sleek profile for portability.

Meanwhile, the HP B1232TU focuses on energy efficiency without compromising performance. This model's lightweight design and long battery life cater to professionals and students who are constantly on the go. Enhanced security features, such as HP BIOS Recovery, protect user data and ensure system integrity, making it an excellent option for those who prioritize data safety.

The HP B1284TU strikes a balance between performance and cost-effectiveness. With a powerful Intel Core processor and ample RAM, users can handle demanding applications and multitask with ease. The laptop's ergonomic keyboard and responsive touchpad provide a comfortable user experience, while the integrated HD webcam and microphone enhance virtual communication.

For those who desire a truly versatile device, the HP B1210VU is an excellent choice. It offers a 2-in-1 design, allowing users to switch between laptop and tablet modes effortlessly. This flexibility, combined with its touchscreen capabilities, makes it perfect for creative professionals and students who benefit from touch interaction. Furthermore, the inclusion of HP's innovative audio technology ensures an immersive listening experience.

Lastly, the HP B1253TU combines style and substance, featuring a sleek design complemented by powerful internals. Its vibrant display is ideal for multimedia consumption, while its fast-charging capabilities keep users powered throughout the day. This model also incorporates multiple connectivity options, ensuring seamless integration with various peripherals and devices.

In conclusion, the HP B series, featuring models like the B1298TU, B1232TU, B1284TU, B1210VU, and B1253TU, showcases a range of laptops designed to meet diverse user needs. With their advanced technologies, robust features, and emphasis on performance and portability, these laptops continue to set a standard in the competitive world of personal computing. Whether for work, study, or entertainment, HP's B series offers a reliable solution for today's tech-savvy consumers.