HP Business InkJet 2800dtn User Manual

ENWWResolving printing problems     69    
Check cable connections
zMake sure both ends of the cable (USB, parallel, or network) are secure.
zIf the printer is connected to a network, check the following:
 Check the Link light on the back of the printer. 
 Make sure you are not using a phone cord to connect the printer.
 The network hub, switch, or router is on and working properly.
Check printer setup for network environment
Ensure the correct printer driver and printer driver port are being used....

70    6 - Maintaining and troubleshootingENWW
Printer takes a long time to print
Check the system configuration
Make sure the computer meets the minimum system requirements for the printer. 
SeePrinter specifications.
Check the port setting
The port setting configuration in your system might not be set to ECP.
See the documentation that came with the computer for information on how to change 
the port setting, or contact the computer manufacturer.
Check the printer software settings
The printer prints...

ENWWPoor print quality and unexpected printouts     7 1     
Check the page-orientation setting
Make sure the media size and page orientation selected in the application match the 
settings in the printer driver.
Check the Preserve Layout setting (Windows)
If you are using an auto-duplex unit to do automatic duplex printing, ensure Preserve 
Layout is selected in the printer driver. Clearing this option may result in unwanted 
page breaks. See Printing on both sides (duplexing).
Check the printer...

72    6 - Maintaining and troubleshootingENWW
Meaningless characters print
If an interruption occurs to a job that is printing, the printer might not recognize the rest of 
the job.
Cancel the print job and wait for the printer to return to the ready state. If the printer does 
not return to the ready state, cancel all jobs, and wait again. When the printer is ready, 
resend the job. If prompted by the computer to retry the job, click Cancel.
Check cable connections
If the printer and computer are...

ENWWPoor print quality and unexpected printouts     7 3     
Clean the inside of the auto-duplex unit
After extensive printing, ink might be deposited on the inside of the auto-duplex unit 
causing ink to smear when printing on both sides of the paper. To remove the deposited 
ink, use a lint free cloth to clean the inside of the auto-duplex unit.
Enable the printers output ramp
When printing in Fast Normal (default) or Fas t print mode, the printer does not use the 
output ramp to hold each printed page...

74    6 - Maintaining and troubleshootingENWW
Output is faded or dull colored
Check the print mode
The Fast Normal and Fast modes in the printer driver allow you to print at a faster rate, 
they are good for printing drafts. To get better result, select Normal or Best. 
SeeChanging print settings.
Check the paper type setting
When printing on transparencies or other special media, select the corresponding media 
type in the printer driver. See Printing on special and custom-size media.
Check the ink...

ENWWPoor print quality and unexpected printouts     7 5     
Colors do not line up properly
Check printheads
The printheads are automatically aligned when a printhead is replaced. However, 
you might notice improvement in the print quality by performing the alignment procedure 
yourself. See Maintaining the printheads.
Check graphics placement
Use the zoom or print preview feature of your software to check for gaps in the placement 
of graphics on the page.
Lines or dots are missing from text or...

76    6 - Maintaining and troubleshootingENWW
Resolving paper-feed problems
This section provides solutions to common paper-feed problems.
For information on resolving jams, see Clearing jams.
Tray cannot be inserted 
zWith the tray removed from the printer, turn the printer off and then on again. 
Reinsert the tray.
zMake sure the tray is aligned with the printer opening.
zCheck for jammed paper.
Media is not supported for the printer or tray
Use only media that is supported for the printer and the tray...

ENWWResolving printer management problems     77    
Multiple pages are being picked up
zMake sure the media guides are set to the correct markings in the trays for the media size 
you are loading. Also make sure the guides are snug, but not tight, against the stack.
zMake sure that the tray is not overloaded with paper.
zWhen you load paper, avoid fanning the stack. Fanning paper can cause static electricity 
to build up and intensify multiple-pick problems.
zWhen reinserting a tray into the printer, do...

78    6 - Maintaining and troubleshootingENWW
Troubleshooting installation issues
If you had trouble installing the printer, check these items:
Problems printing alignment page
When printheads are installed or replaced, the printer automatically prints two alignment 
pages to align the printheads. This process takes about eight minutes. The alignment pages 
may be discarded after they are printed. If the printer does not print the pages, see General 
troubleshooting tips, or align the printheads manually...