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HP LaserJet 4000 - DIMM Slots; Memory Enhancement technology (MEt); Page Protect

HP LaserJet 4000
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5-20 Functional Information
EN
DIMM Slots
The DIMM slots may be used to add memory, fonts, or firmware
upgrades. Note that DIMMs and SIMMS are not compatible.
Non-Volatile Memory (NVRAM)
The printer uses NVRAM to store I/O and information on the print
environment’s configuration. The contents of NVRAM are retained
when the printer is turned off or disconnected.
Disk Accessory
The Disk Accessory is mounted on the rear of the Formatter PCA. It
can be used to permanently store downloaded fonts and forms in the
printer.
Memory Enhancement technology (MEt)
The Hewlett-Packard Memory Enhancement technology (MEt)
effectively doubles the standard memory through a variety of font and
data compression methods.
Note MEt is only available in PCL mode; it is not functional when printing in
PS mode.
Page Protect
Page complexity (rules, complex graphics, or dense text) may exceed
the printer’s ability to create the page image fast enough to keep pace
with the Image Formation Process. If Page Protect is disabled, and a
page is too complex, it may 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 printer will display the 21 PAGE
TOO COMPLEX error message, alternating with PRESS GO TO CONTINUE.
Page Protect allows the Formatter to create the entire page image in
page buffer memory before physically moving the paper through the
printer. This process ensures that the entire page will be printed.
Page Protect applies only to PCL printing. The default setting is Auto.

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