HP LaserJet 4250n User Manual

3. Make sure that paper is loaded correctly and that all adjustments have been made. (See
Loading trays.) Make sure that the guides in the  tray are not too tight or too loose
against the paper.
4. Turn over the stack of paper in  the tray. Also, try rotating the paper 180°.
5. Make sure that the type and quality of the paper you are using meet HP specifications. (See 
Paper specifications .)
6. Make sure that the environmental specifications for the printer are bein\
g met. (See
Operating environment...

6.If envelopes are creasing, try storing envelopes so that they lie flat.
Vertical white lines 
1. Print a few more pages to see if the problem corrects itself.
2. Make sure that the type and quality of the paper you are using meet HP specifications.
(See 
Paper specifications .)
3. Replace the print cartridge.
Tire tracks 
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B B
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B C
C C
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This defect typically occurs when the print cartridge has far exceeded its rated life of 10,000
(Q5942A) or 20,000 (Q5942X)...

Scattered lines
1. Make sure that the type and quality of the paper you are using meet HP specifications.(See 
Paper specifications .)
2. Make sure that the environmental specifications for the printer are bein\
g met. (See
Operating environment .)
3. Turn over the stack of paper in  the tray. Also, try rotating the paper 180°.
4. Open the Configure Device menu at the printer control panel. Open the Print Quality submenu and change the  TONER DENSITY setting. (See 
Print Quality submenu.)
5. Open the...

Random image repetition 
If an image that appears at the top of the page (in solid black) repeats further down the page
(in a gray field), the toner  might not have been completely erased from the last job. (The
repeated image might be lighter or darker  than the field it appears in.)
● Change the tone (darkness) of the field that the repeated image appears in.
● Change the order in which the images are  printed. For example, have the lighter image
at the top of the page, and  the darker image farther...

Troubleshooting network printing problems
NOTEHP recommends that you use the printer CD-ROM to install and set up the printer on a
network.
● Print a configuration page (see 
Configuration page ). If an HP Jetdirect print server is
installed, printing a configuration page also prints a second page that shows the network
settings and status.
● See the  HP Jetdirect Print Server Administrators Guide  on the printer CD-ROM for
help and for more information about the Jetdirect configuration page. To reach...

Troubleshooting common Windows problems 
Error message:
Error Writing to LPTx in Windows 9x.Cause
Solution
Media is not loaded.Make sure that paper or other print media is
loaded in the trays.
The cable is defective or loose.Make sure that the cables are connected
correctly, the printer is on, and the Ready light is
on.
The printer is plugged into a power strip and is
not receiving enough power.Unplug the power cord from the power strip and
plug it into another electrical outlet.
The input/output setting...

Troubleshooting common Macintosh problems
In addition to the problems that are listed in Solving general printing problems, this section
lists problems that can occur when using Mac OS 9. x, or Mac OS X.
NOTE
Setup for USB and IP  printing is performed through the  Desktop Printer Utility. The printer
will  not appear in the Chooser.
Problems with Mac OS 9.x
The printer name or IP address does not  show or verify in the Desktop Printer Utility.
Cause
Solution
The printer might not be ready.Make sure that...

A print job was not sent to the printer that you wanted.
Cause
Solution
The print queue might be stopped.Restart the print queue. Open the  Printing menu in the top
menu bar and click  Start Print Queue.
The wrong printer name or IP address is being used.
Another printer that has the same or a similar name or IP
address might have received your print job.Check the printer name or IP address by printing a
configuration page. See 
Configuration page. Verify that the
printer name or IP address on the...

When connected with a USB cable, the printer does not appear in the Desktop Printer Utility or the Apple System
Profiler after the driver is selected.
Cause
Solution
This problem is caused by either a software or hardware
component.Software troubleshooting
● Check that your Macintosh supports USB.
● Verify that your Macintosh operating system is Mac OS
9.1 or later.
● Ensure that your Macintosh has the appropriate USB
software from Apple.
NOTE
The iMac and Blue G3 desktop Macintosh systems meet all
of...

The printer name, IP address, or Rendezvous host name does not appear in the printer list box in the print center.Cause
Solution
The printer might not be ready.Make sure that the cables are connected correctly, the
printer is on, and the ready light is on. If you are connecting
through a USB or Ethernet hub, try connecting directly to the
computer or use a different port.
The wrong connection type might be selected.Make sure that USB, IP Printing, or Rendezvous is selected,
depending on the type of...