Service manual

Draft mode (EconoMode)
Depending on which driver is used, selecting draft or EconoMode from the driver allows the product to
use less toner, extending the life of the print cartridge. There is a change in print quality when this setting
is used.
NOTE HP does not recommend the full-time use of EconoMode. If EconoMode is used full-time
when the average toner coverage is very low, it is possible that the toner supply will outlast the
mechanical parts of the print cartridge.
HP Memory Enhancement technology (MEt)
HP MEt effectively doubles the standard memory through a variety of font- and data-compression
methods.
Enhanced I/O
The Enhanced I/O feature uses printer memory to store data that the printer receives from the host
computer. When Enhanced I/O is enabled, you can send more data to the printer in less time, so that
you can return to your software program sooner. Enhanced I/O has the following options:
■ Auto: The product uses Enhanced I/O memory allocation to increase the speed of data transfer
from the host computer to the printer, if necessary. The default setting is Auto.
■ Off: The printer uses the minimum amount of product memory for storing data that the host computer
sends.
■ Page protect: The formatter creates the entire page image in page-buffer memory before physically
moving the media through the printer. This process ensures that the entire page is printed.
Page complexity (ruling lines, complex graphics, or dense text) can exceed the printer’s ability to create
the page image quickly enough to keep pace with the image-formation process. If the page-protect
feature is disabled and a page is too complex, the page might print in parts (for example, the top half
on one page and the bottom half on the next page). Some print-data loss is likely in these instances,
and the A
TTENTION light on the control panel will illuminate.
48 Chapter 4 Operational overview ENWW