Equipment guidelines

Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.

●When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible straps with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap snugly against the skin at all times. On grounded mats with banana-plug connectors, use alligator clips to connect a wrist strap.

●When standing, use foot straps and a grounded floor mat. Foot straps (heel, toe, or boot straps) can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use foot straps on both feet with a minimum of one megohm resistance between the operator and ground. To be effective, the conductive must be worn in contact with the skin.

The following grounding equipment is recommended to prevent electrostatic damage:

●Antistatic tape

●Antistatic smocks, aprons, and sleeve protectors

●Conductive bins and other assembly or soldering aids

●Nonconductive foam

●Conductive tabletop workstations with ground cords of one megohm resistance

●Static-dissipative tables or floor mats with hard ties to the ground

●Field service kits

●Static awareness labels

●Material-handling packages

●Nonconductive plastic bags, tubes, or boxes

●Metal tote boxes

●Electrostatic voltage levels and protective materials

The following table lists the shielding protection provided by antistatic bags and floor mats.

Material

Use

Voltage protection level

 

 

 

Antistatic plastics

Bags

1,500 V

 

 

 

Carbon-loaded plastic

Floor mats

7,500 V

 

 

 

Metallized laminate

Floor mats

5,000 V

 

 

 

36

Chapter 4 Removal and replacement procedures

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HP CQ57-314NR, CQ57-339WM, CQ57-315NR, CQ57-319WM, CQ57-310US Equipment guidelines, Material Use Voltage protection level
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CQ57-315NR, CQ57-339WM, CQ57-310US, CQ57-314NR, CQ57-319WM specifications

The HP CQ57 series laptops, including models CQ57-319WM, CQ57-314NR, CQ57-310US, CQ57-339WM, and CQ57-315NR, are designed to cater to everyday computing needs with an emphasis on functionality, affordability, and user-friendly performance.

Each model in the CQ57 series is powered by the AMD Fusion technology, which combines a CPU and GPU on a single chip. This integration provides an enhanced performance for everyday tasks while ensuring energy efficiency, making it suitable for students and home users alike. The series typically features an AMD E-300 or similar dual-core processor, delivering adequate processing power for web browsing, document editing, and light multimedia consumption.

The CQ57 laptops come equipped with a spacious 15.6-inch display, which offers a resolution of 1366 x 768 pixels. This display size is ideal for various activities, including watching videos and browsing the web. The LED-backlit technology enhances clarity and reduces power consumption, contributing to longer battery life.

When it comes to storage, the CQ57 series provides a standard hard drive capacity, typically around 500GB, allowing users ample space for their files, applications, and multimedia content. The inclusion of 4GB of RAM ensures a smooth multitasking experience, enabling users to run several applications simultaneously without significant lag.

Connectivity options are well-equipped in these models, which often include USB 2.0 and HDMI ports, enabling the connection of essential peripherals and external displays. Additionally, built-in Wi-Fi and Ethernet capabilities ensure that users can stay connected to the internet seamlessly.

One of the standout features of the HP CQ57 series is its focus on portability. Weighing roughly 5.6 pounds, these laptops strike a balance between durability and weight. This makes them suitable for users who may need to transport their devices frequently, whether for school, work, or travel.

In terms of operating system, these laptops typically come pre-installed with Windows 7, though upgrades to more recent versions are often possible, ensuring that users receive a modern computing experience.

Overall, the HP CQ57 series, with its variety of models, offers a solid and affordable choice for users seeking reliable performance for daily tasks. With its blend of functionality, decent specifications, and user-friendly features, the CQ57 laptops are a commendable entry in the budget laptop market.
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