HP LaserJet 4250n User Manual

							Print job is extremely slow.Cause
Solution
The job might be very complex.
The maximum speed of the printer cannot be
exceeded even when more memory is added.
Printing speeds might be automatically reduced
when printing on custom-sized media.
Note: Slower speeds are expected when printing
on narrow paper, when printing from tray 1, or
when using the HIGH 2 fuser mode.Reduce the complexity of the page or try
adjusting the print-quality settings. If this problem
occurs frequently, add memory to the printer.
You are printing a PDF or PostScript (PS) file but
are using a PCL printer driver.Try using the PS printer driver rather than the
PCL printer driver. (You can usually do this from
a software program.)
In the printer driver,  Optimize for: is set to
cardstock, heavy, rough, or bond paper.In the printer driver, set the type to plain paper
(see 
Printing by type and size of media (locking
trays) ).
Note : If you change the setting to plain paper,
the print job will print faster. However, if you are
using heavy media, for best results leave the
printer driver set to heavy even though printing
might be slower.
Print job prints on both sides of the paper. 
Cause
Solution
The printer is set for duplexing.See Changing the settings for a print job  to
change the setting, or see the online Help.
Print job contains only one page but the printer  processes the back side of the page as well
(the page comes part of the way out,  and then goes back into the printer).
Cause
Solution
The printer is set for duplexing. Even if the print
job contains only one page, the printer also
processes the back side.See Changing the settings for a print job  to
change the setting, or see the online Help.
Do not try to pull the page out of the printer
before duplexing is complete. Jamming might
result.
Pages print, but are totally blank.
Cause
Solution
The sealing tape might still be in the print
cartridge.Remove the print cartridge and pull out the
sealing tape. Reinstall the print cartridge.
The file might have blank pages.Check the file to make sure that it does not
contain blank pages.
ENWW Solving general printing problems 129
 
						

							The printer prints, but the text is wrong, garbled, or incomplete.Cause
Solution
The printer cable is loose or defective.Disconnect the printer cable and reconnect it.
Try a print job that you know works. If possible,
attach the cable and printer to another computer
and try a print job that you know works. Finally,
try a new cable.
The printer is on a network or sharing device and
is not receiving a clear signal.Disconnect the printer from the network and use
a parallel or USB cable to attach it directly to a
computer. Print a job that you know works.
The wrong driver was selected in the software.Check the softwares printer selection menu to
make sure that an HP LaserJet 4250 or 4350
series printer is selected.
The software program is malfunctioning.Try printing a job from another program.
The printer does not respond when you select Print in the software. 
Cause
Solution
The printer is out of media.Add media.
The printer might be in the manual feed mode.Change the printer from manual-feed mode.
The cable between the computer and the printer
is not connected properly.Disconnect and reconnect the cable.
The printer cable is defective.If possible, attach the cable to another computer
and print a job that you know works. You might
also try using a different cable.
The wrong printer was selected in the software.Check the software printer selection menu to
make sure that an HP LaserJet 4250 or 4350
series printer is selected.
The printer might have a jam.Clear any jams, paying careful attention to the
duplexer area (if your model has a duplexer).
See 
Clearing jams .
The software for the printer is not configured for
the printer port.Check the softwares printer selection menu to
make sure that it is using the correct port. If the
computer has more than one port, make sure
that the printer is attached to the correct one.
The printer is on a network and is not receiving a
signal.Disconnect the printer from the network and use
a parallel or USB cable to attach it directly to a
computer. Reinstall the printing software. Print a
job that you know works.
Clear any stopped jobs from the print queue.
The printer is not receiving power.If no lights are on, check the power cord
connections. Check the power switch. Check the
power source.
130 Chapter 4 Problem solving ENWW
 
						

							The printer does not respond when you select Print in the software. Cause
Solution
The printer is malfunctioning.Check the control-panel display for messages
and lights to determine if the printer is indicating
an error. Note any message and see 
Interpreting
control-panel messages .
ENWW Solving general printing problems 131
 
						

							Guidelines for using paper
For best results, make sure the paper is of good quality, and free of cuts, nicks, tears, spots,
loose particles, dust, wrinkles, voids, and curled or bent edges.
If you are unsure what type of paper you are loading (such as bond or recycled), check the
label on the package of paper.
For a complete list of supported media, see 
Supported sizes of print media.
The following problems with paper cause print quality deviations, jamming, or even damage
to the printer.
SymptomProblem with paperSolution
Poor print quality or toner
adhesionThe paper is too moist, too
rough, too heavy, too smooth,
or it is embossed or from a
faulty paper lot.Try another kind of paper,
between 100 and 250
Sheffield, and with 4 to 6%
moisture content.
Dropouts, jamming, curlThe paper has been stored
improperly.
The paper varies from side to
side.Store paper flat in its moisture-
proof wrapping.
Turn the paper over.
Excessive curlThe paper is too moist, has the
wrong grain direction, or is of
short-grain construction.
The paper varies from side to
side.Open the rear output bin, or
use long-grain paper.
Turn the paper over.
Jamming, damage to printerThe paper has cutouts or
perforations.Use paper that is free of
cutouts or perforations.
Problems with feedingThe paper has ragged edges,
or it is from a faulty paper lot.
The paper varies from side to
side.
The paper is too moist, too
rough, too heavy, or too smooth.
It has the wrong grain direction,
is of short-grain construction, or
it is embossed.Use high-quality paper that is
made for laser printers.
Turn the paper over.
Try another kind of paper,
between 100 and 250
Sheffield, and with 4 to 6%
moisture content.
Open the rear output bin, or
use long-grain paper.
NOTEDo not use letterhead paper that is printed with low-temperature inks, such as those used in
some types of thermography. Do not use raised or embossed letterhead. The printer uses
heat and pressure to fuse toner to the paper. Make sure that any colored paper or preprinted
forms use inks that are compatible with this fusing temperature (200°C or 392°F for
0.1 second).
CAUTION
Failure to follow these guidelines could cause jams or damage to the printer.
132 Chapter 4 Problem solving ENWW
 
						

							Printing special pages
Special pages within the memory of the printer can help you to diagnose and learn about
problems with your printer.
● Configuration page
The configuration page lists many of the current settings and properties of the printer.
For information about how to print the configuration page, see 
Configuration page . If you
have an HP Jetdirect print server installed, a  second page prints that lists all of the
HP Jetdirect information.
● Font list
You can print a font list using the control panel (see 
PS or PCL font list) or (for
Macintosh computers) the HP LaserJet Utility (see 
HP LaserJet Utility ).
● Supplies status page
Use the supplies status page to obtain information about the print cartridge that is
installed in the printer, the amount of life that  is left in the print cartridge, and the number
of pages and jobs that have been processed (see 
Supplies status page ).
ENWW Printing special pages133
 
						

							Clearing jams
If a jam message appears on the printer control-panel display, look for jammed paper or
other print media in the locations that are indicated in the figure below. Then see the
procedure for clearing the jam. You might need to look for media in other locations than
those that are indicated in the jam message. If  the location of the jam is not obvious, look
first in the top-cover area  underneath the print cartridge.
When clearing jams, be very careful not to tear  jammed media. If a small piece of media is
left in the printer, it could cause additional jams. If jams are a recurring problem, see 
Solving
repeated jams .
Jam locations
12
3
6
5
4
1 Top-cover and print-cartridge areas
2 Optional envelope feeder
3 Tray areas (tray 1, tray 2, and optional trays)
4 Optional duplexer
5 Fuser area
6 Output areas (top bin, rear bin, and optional stacker or stapler/stacker)
NOTELoose toner might remain in the printer after a jam and cause temporary print-quality
problems. These problems should clear up within a few pages.
Clearing jams from the top-cover and print-cartridge areas
Clear jams that occur during the printing process by using this procedure.
134 Chapter 4 Problem solving ENWW
 
						

							To clear jams from the top-cover and print-cartridge areas
1. Open the top cover and remove the print cartridge.
CAUTIONTo prevent damage to the print cartridge, do not expose it to light for more than a few
minutes. Cover the print cartridge with a sheet of paper while it is outside of the printer.
2. Use the green handle to lift the paper-access plate.
3. Slowly pull the jammed media out of the  printer. Do not tear the media. If media is
difficult to remove, try clearing it from the tray area. (See 
Clearing jams from the trays .)
NOTEAvoid spilling loose toner. Using a dry, lint-free cloth, clean any loose toner that might have
fallen into the printer. If loose toner falls  into the printer, it might cause temporary problems
with print quality. Loose toner should clear from  the printer after a few pages are printed. If
toner gets on your clothing, wipe it off with a dry cloth and wash clothing in cold water. (Hot
water sets toner into fabric.)
4. Open tray 1 and remove the entrance cover. If media is present, remove it.
ENWW Clearing jams 135
 
						

							5. Rotate the paper guide to check for additional jammed media underneath. If jammedmedia is present, remove it.
6. Replace the entrance cover and close tray 1.
7. Reinstall the print cartridge and close the top cover.
8. If a jam message persists, jammed media is still  in the printer. Look for the jam in
another location. (See 
Jam locations .)
If you are using a non-HP print cartridge, the message  NON HP SUPPLY INSTALLED
might appear on the printer control panel display. Press 
 ( SELECT button) to continue.
Clearing jams from the optional envelope feeder
This section applies only to jams that occur when you are using an optional envelope feeder.
To clear jams from the optional envelope feeder
1. Remove any envelopes that are loaded in the optional envelope feeder. Lo\
wer the
envelope weight and lift the tray extension up, to the closed position.
136 Chapter 4 Problem solving ENWW
 
						

							2. Press and hold the release button on the left side of the optional envel\
ope feeder. Graspboth sides of the optional envelope feeder  and carefully pull it out of the printer.
3. Slowly remove any jammed envelopes from the optional envelope feeder and the printer.
4. Insert the optional envelope feeder into the printer until it locks into place. (The
connector on the top, right side of the optional envelope feeder fits into the plug in the
printer.) Pull gently on the optional envelope feeder  to be sure that it is securely in place.
5.
Press  (SELECT button) to clear the jam message.
6. If a jam message persists, an envelope is still  jammed in the printer. Look for the jam in
another location. (See 
Jam locations .)
7. Reload the envelopes, making sure that you push the bottom envelopes in slightly further than the top envelopes. (See 
Loading envelopes in the optional envelope feeder .)
Clearing jams from the trays
This section describes how to clear jams from the trays. Also see Clearing jams from the
optional envelope feeder.
To clear jams from tray 1
Slowly pull the jammed paper or other print media out  of the printer. If part of the paper has
already been pulled into the printer, follow the steps under 
To clear jams from the top-cover
and print-cartridge areas .
ENWW Clearing jams 137
 
						

							To clear jams from tray 2 or an optional 500-sheet tray 
1. Slide the tray out of the printer, lift it slightly, and remove any damaged media from thetray.
2. If the edge of the jammed media is visible in the feed area, slowly pull the media down and out of the printer. (Do not pull the media  straight out, or it will tear.) If the media is
not visible, look in the next tray or in the top-cover area. (See 
To clear jams from the top-
cover and print-cartridge areas .)
NOTEDo not force the media if it  will not move easily. If the media is stuck in a tray, try removing it
through the tray above (if applicable) or through the top-cover area.
3. Make sure that the media is flat in the tray at all four corners and below the maximum- height indicators.
4. Slide the tray back into the printer.
5.Press  (SELECT button) to clear the jam message.
6. If a jam message persists, a sheet is still  jammed in the printer. Look for the jam in
another location. (See 
Jam locations .)
138 Chapter 4 Problem solving ENWW