HP LaserJet 4250n User Manual

							Labels
CAUTIONTo avoid damaging the printer, use only labels recommended for laser printers. To prevent
serious jams, always use tray 1 to print labels and always use the rear output bin. Never
print on the same sheet of labels more than  once or print on a partial sheet of labels.
Label construction
When selecting labels, consider the quality of each component:
●Adhesives:  The adhesive material should be stable at 200°C (392°F), the printers
fusing temperature.
● Arrangement:  Only use labels with no exposed backing between them. Labels can peel
off sheets with spaces between the labels, causing serious jams.
● Curl:  Prior to printing, labels must lie flat with no more than 13 mm (0.5 inch) of curl in
any direction.
● Condition:  Do not use labels with wrinkles, bubbles, or other indications of separation.
For more information, see 
Printing on labels .
NOTE
Choose labels in the  printer driver (see Using the printer driver).
Transparencies
Transparencies used in the printer must be able to withstand 200°C (392°F), the printers
fusing temperature.
CAUTION
To avoid damaging the printer, use only transparencies recommended for use in
HP LaserJet printers, such as HP-brand transparencies. (For ordering information, see 
Part
numbers .)
For more information, see 
Printing on transparencies .
NOTE
Choose transparencies in the printer driver (see Using the printer driver ).
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							240Appendix C Specifications ENWW
 
						

							D
Printer memory and expansion
This section explains the memory features of the printer and provides steps for expansion.
●
Printer memory
●
Installing CompactFlash cards
●
Checking memory installation
●
Saving resources (permanent resources)
●
Installing EIO cards or mass storage devices
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							Overview
The printer comes with one dual inline memory module (DIMM) already installed. One
additional DIMM slot and two CompactFlash slots are available for upgrading the printer with
the following items:
●More printer memory—DIMMs (SDRAM) are available in  48, 64, 128, and 256 MB, for a
maximum of 512 MB.
● CompactFlash font cards—Unlike standard printer memory, CompactFlash cards can be
used to permanently store downloaded items, such  as fonts and forms, even when the
printer is off. These cards can also be  used to enable the printer to print non-Roman
characters.
● Other DIMM-and CompactFlash-based printer languages and printer options.
NOTE
Single inline memory modules (SIMMs) used in previous HP LaserJet printers are not
compatible with the printer. 
The printer also has two EIO slots for expanding the printers capabilities with a mass
storage device, such as an optional hard disk for  storing forms and fonts, and for certain job-
storage functions. The EIO slots can also be used for adding a wireless connections, a
network card, or a connectivity card for serial or AppleTalk.
NOTE
Some HP LaserJet 4250 or 4350 series printers come with a network device already
installed. The EIO slot can be used to provide networking capabilities in addition to those
already built into the printer.
To find out how much memory is installed in the  printer, or to find out what is installed in the
EIO slots, print a configuration page. (See 
Configuration page .)
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							Printer memory
You might want to add more printer memory to the printer if you often print complex
graphics, print PostScript (PS) documents, or use many downloaded fonts. Added memory
also gives you more flexibility in supporting job-storage features, such as quick copying.
To install printer memory
CAUTIONStatic electricity can damage DIMMs. When handling DIMMs, either wear an antistatic wrist
strap or frequently touch the surface of the DIMM antistatic package, then touch bare metal
on the printer.
The HP LaserJet 4250 or 4350 series printers come  with one DIMM installed in slot 1. A
second DIMM can be installed in slot 2. If desired, you can replace the DIMM installed in slot
1 with a higher-memory DIMM.
If you have not already done so, print a  configuration page to find out how much memory is
installed in the printer before  adding more memory. (See 
Configuration page.)
1. Turn the printer power off.
2. Unplug the power cord and disconnect any cables.
3. Grasp the cover on the right side of the  printer and pull it firmly toward the rear of the
printer until it stops.
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							4. Remove the cover from the printer.
5. Open the access door by pulling on the metal tab.
6. Remove the DIMM from the antistatic package.  Hold the DIMM with your fingers against
the side edges and thumbs against the back  edge. Align the notches on the DIMM with
the DIMM slot. (Check that the locks on each  side of the DIMM slot are open, or outward.)
7. Press the DIMM straight into the slot, and press firmly. Make sure the locks on each side
of the DIMM snap into place.
NOTE
To remove a DIMM, first release the locks.
CAUTIONDo not move or remove the preinstalled DIMM in the bottom slot.
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							8. Close the access door and press firmly until it snaps into place.
9. Set the bottom of the cover onto the printer. Make sure the bottom tab on the cover fits
into the corresponding slot in the printer. Rotate the cover up, toward the printer.
10. Slide the cover toward the front of  the printer until it clicks into place.
11. Reattach any cables and the power cord, then  turn the printer power on, and then test
the DIMM installation. See 
Checking memory installation  below.
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							Installing CompactFlash cards
Up to two CompactFlash cards can be installed to add additional fonts to the printer.
To install a CompactFlash card
1. Turn the printer power off.
2. Unplug the power cord and disconnect any cables.
3. Grasp the cover on the right side of the printer and pull it firmly toward the rear of the
printer until it stops.
4. Remove the cover from the printer.
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							5. Open the access door by pulling on the metal tab.
6. Remove the CompactFlash card from its package.
7. Hold the CompactFlash card by its edges and line  up the grooves in the side of the card
with the tabs in the CompactFlash card slot.
8. Slide the CompactFlash card into place.
9. Close the access door, press firmly until it snaps into place.
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							10. Set the bottom of the cover onto the printer. Make sure the bottom tab on the cover fits
into the corresponding slot in the printer. Rotate the cover up, toward the printer.
11. Slide the cover toward the front of  the printer until it clicks into place.
12. Reattach any cables and the power cord, then turn the printer power on and test the
installation. (See 
Checking memory installation .)
Use Device Storage Manager in HP Web Jetadmin to manage fonts. For more information,
see the Help in HP Web Jetadmin.
248 Appendix D Printer memory and expansion ENWW