Repair Information, Handling ESD-Sensitive Parts

4090-001

4. Repair Information

This chapter explains how to make adjustments to the printer and how to remove defective parts.

Note: Read the following before handling electronic parts. When working on the printer, always unplug the printer from the wall outlet. High voltage is present in the power supply as long as it is plugged into the wall outlet.

Handling ESD-Sensitive Parts

Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, follow the instructions below in addition to all the usual pre- cautions, such as turning off power before removing logic boards:

•Keep the ESD-sensitive part in its original shipping container (a special “ESD bag”) until you are ready to install the part into the printer.

•Make the least-possible movements with your body to prevent an increase of static electricity from clothing fibers, carpets, and furniture.

•Put the ESD wrist strap on your wrist. Connect the wrist band to the system ground point. This discharges any static electricity in your body to the printer.

•Hold the ESD-sensitive part by its edge connector shroud (cover); do not touch its pins. If you are removing a pluggable module, use the cor- rect tool.

•Do not place the ESD-sensitive part on the printer cover or on a metal table; if you need to put down the ESD-sensitive part for any reason, first put it into its special bag.

•Printer covers and metal tables are electrical grounds. They increase the risk of damage because they make a discharge path from your body through the ESD-sensitive part. (Large metal objects can be dis- charge paths without being grounded.)

•Prevent ESD-sensitive parts from being accidentally touched by other personnel. Install printer covers when you are not working on the printer, and do not put unprotected ESD-sensitive parts on a table.

•If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case).

•Be extra careful in working with ESD-sensitive parts when cold weather heating is used because low humidity increases static electricity.

Repair Information 4-1

4090-001 specifications

The Lexmark 4090-001 is a robust and reliable printer that caters to the needs of high-volume printing environments. Known for its durability and efficiency, the Lexmark 4090-001 is often utilized in commercial settings where performance and quality are paramount.

One of the standout features of the Lexmark 4090-001 is its print speed, which is capable of delivering up to 120 characters per second. This rapid output makes it ideal for organizations that require fast and efficient printing solutions for invoices, reports, and other documents. Its high-speed performance does not compromise on the quality of the print; it produces clear and crisp text output, ensuring that important documents maintain a professional appearance.

The Lexmark 4090-001 utilizes a 24-pin dot matrix technology, which enhances the clarity and precision of printed characters and graphics. This technology is particularly beneficial for printing multi-part forms, where the device can effectively create multiple copies at once without sacrificing quality. The printer is engineered to handle a variety of media types, including labels, envelopes, and continuous forms, making it versatile and adaptable to diverse business needs.

Another characteristic of the Lexmark 4090-001 is its extensive connectivity options. It supports parallel and serial interfaces, allowing it to be easily integrated into existing network systems. This feature ensures that multiple users can access the printer simultaneously, boosting productivity in the workplace.

User-friendly design elements, such as a simple control panel and easy-loading mechanisms for paper, enhance operational efficiency. Maintenance is also simplified, which limits downtime and ensures that users can focus on their tasks without dealing with complex printer issues.

Furthermore, the Lexmark 4090-001 is built with longevity in mind. Its sturdy construction is designed to withstand the rigors of daily use, making it a cost-effective solution for businesses looking to invest in long-term printing capabilities.

In summary, the Lexmark 4090-001 combines high-speed printing, advanced dot matrix technology, versatile media handling, and user-friendly features, all wrapped in a robust design. It is an admirable choice for businesses that require consistent performance and exceptional print quality in a demanding work environment.