N O T E N O U G H M E M O R Y O R R E S O U R C E S . E X I T S O M E P R O G R A M S A N D T R Y A G A I N

You have too many programs open. Close all windows and open the program that you want to use.

O P E R A T I N G S YS T E M N O T F O U N D Reinstall the hard drive (see "Hard Drive" on page 139). If the problem persists, contact Dell (see "Contacting Dell" on page 177).

O P T I O N A L ROM B A D C H E C K S U M The optional ROM has failed. Contact Dell (see "Contacting Dell" on page 177).

AR E Q U I R E D . DLL F I L E W A S N O T F O U N D The program that you are trying to open is missing an essential file. Remove and then reinstall the program.

1Click Start Control Panel.

2Under Programs, click Uninstall a Program.

3Select the program you want to remove.

4Click Uninstall and follow the prompts on the screen.

5See the program documentation for installation instructions.

S E C T O R N O T F O U N D The operating system cannot locate a sector on the hard drive. You may have a defective sector or corrupted FAT on the hard drive. Run the Windows error-checking utility to check the file structure on the hard drive. See Windows Help and Support for instructions (click Start →Help and Support). If a large number of sectors are defective, back up the data (if possible), and then reformat the hard drive.

S E E K E R R O R The operating system cannot find a specific track on the hard drive.

S H U T D O W N F A I L U R E A chip on the system board may be malfunctioning. Run the System Set tests in the Dell Diagnostics (see "Dell Diagnostics" on page 99).

TI M E - O F - D A Y C L O C K L O S T P O W E R System configuration settings are corrupted. Connect your computer to an electrical outlet to charge the battery. If the problem persists, try to restore the data by entering the system setup program, then immediately exit the program (see "Using the System Setup Program" on page 187). If the message reappears, contact Dell (see "Contacting Dell" on page 177).

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Troubleshooting

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Dell 1720 owner manual 114

1720 specifications

The Dell 1720 and 1520 printers represent a significant milestone in the world of printing technology, catering primarily to small businesses and office settings. Both models are monochrome laser printers, renowned for their ability to deliver high-quality prints with exceptional speed and efficiency.

The Dell 1720 is designed with performance in mind, boasting a print speed of up to 33 pages per minute, making it ideal for high-volume printing environments. Equipped with a 400 MHz processor and 64 MB of memory, it ensures fast processing of complex documents, thereby reducing wait times for users. Its maximum print resolution of 1200 x 1200 dpi guarantees crisp, clear text and sharp graphics, suitable for professional presentations and reports.

On the other hand, the Dell 1520, while slightly less powerful, still offers impressive capabilities. It provides a print speed of up to 30 pages per minute and features a similar print resolution of 1200 x 1200 dpi. The compact design of the 1520 makes it a great option for businesses with limited space, while still maintaining robust performance standards.

Both printers utilize Dell's proprietary Toner Management System, which helps monitor toner levels and notifies users when it's time to order replacements. This technology aids in minimizing downtime and ensures continued productivity. The printers are compatible with a variety of operating systems including Windows and Mac OS, making them versatile solutions for diverse office environments.

Another important feature of the Dell 1720 and 1520 is their energy efficiency, thanks to Energy Star certification. This ensures that both models consume less power compared to traditional printers, making them eco-friendly choices for businesses looking to reduce their carbon footprint.

In terms of connectivity, both models come equipped with USB 2.0 ports for straightforward connections to computers. Additionally, the Dell 1720 offers optional networking capabilities with an Ethernet port, allowing for sharing across multiple users in a networked environment.

With a range of features including reliable performance, energy efficiency, and robust print quality, the Dell 1720 and 1520 remain popular choices among small to medium-sized businesses seeking dependable monochrome printing solutions.