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Phaser 780


Symptoms and solutions

 

Front Panel Messages  

Symptom
Possible Causes
Solution

Power indicator is blinking.

The printer is processing or printing a job.

Wait for the job to be completed or cancel the job.

You have entered a menu in the front panel.

Exit the menu.

Power indicator is off.

The printer is not ready, is disabled, or has detected an error.

Read the front panel message to determine the printer's status.

Error indicator is on.

Attention is required, but not immediately. For example, when the front panel message indicates a toner cartridge is low.

Correct the condition reported by the front panel.

Error indicator is blinking.

The printer detects a user-correctable error, such as an open door or a paper jam.

Correct the condition reported by the front panel (e.g., close the door or clear the media jam).

Error occurred that may be user-correctable.

  • Press the "i" (information) button for more information on the error condition.
  • Turn the printer off and back on again. If the indicator is still on or blinking after the power-up sequence, the printer may require service.

The front panel menu exits and returns to Ready without anyone pressing the button.

Front panel timeout: if no activity occurs in 5 minutes, the front panel returns to Ready.

Press Select to enter the front panel menu.

Front panel reports:

Jam at <Location>

(The printer icon on the front panel display flashes the location of the jam.)

Media j am.

  • Jam at A, B: Pull out the media-feed unit on the lower right side of the printer. Refer to the User Guide or the label on the inside of the unit to clear the jam.
  • Jam at C, D: Pull out the fuser unit on the lower left side of the printer. Refer to the User Guide or the label on the inside of the unit to clear the jam.
  • Jam at E: Open the cover on the top left of the printer. Refer to the User Guide or the label on the inside of the cover.

Too much media is loaded in the media tray.

  • Reduce the amount of media to below the media level indicator on the media tray label.
  • Make sure that paper or transparencies are installed correctly and in the media-specific tray.

Media is wrinkled or curled.

Change the media.

Media is too thick or too thin.

Use recommended media. Refer to the User Guide for more information.

Media is damp from humid conditions.

Replace with a fresh ream. Store media in a controlled environment.

Front panel reports:
Load Media in Tray <no.>

The media installed is not what the printer is expecting.

  • Change the default media tray to match the desired media type; turn the printer off and then turn it on again.
  • Cancel the job and check for the appropriate driver selection.

Front panel reports:
Load Media in Multi-Purpose Tray

Media in the multi-purpose tray is not the same media type selected in the driver.

  • Load the correct media type in the multi-purpose tray or reselect the media type from the front panel.

Front panel reports:
<color> Toner Low

The indicated color toner cartridge is almost empty.

  • Order a toner cartridge now. Change the toner cartridge soon.

Front panel reports:
Replace <color> Toner Cartridge

Indicated color toner cartridge is empty.

  • Replace the indicated color toner cartridge now; the printer stops until you replace the cartridge.

Front panel reports:
Imaging Unit Life Almost Over

The imaging unit is wearing out.

Replace the imaging unit soon; order an imaging unit now. Although it continues to function, the print quality may be affected.

Front panel reports:
Replace Imaging Unit

The life of the imaging unit life has been exceeded.

Replace the imaging unit now.

Front panel reports:
Fuser Roll Cartridge Low

The fuser roll cartridge is almost spent.

 

Order a new fuser roll cartridge now. Replace the fuser roll cartridge soon.

Front panel reports:
Replace Fuser Roll Cartridge

The fuser roll cartridge is spent.

Replace the fuser roll cartridge now.

Front panel reports:
Printer Maintenance Required Soon

The fuser is wearing out.

Call Customer Support.

Front panel reports:
Replace Fuser

The fuser is worn out.

Call Customer Support.

Front panel reports:
Error ##

An error occurred that is not user-correctable.

See Error codes for a list of common error codes.

Press the Info button on the front panel for more information on the problem.

Turn the printer off and back on again. If the error persists, call Customer Support.

 

Print Quality Problems (And Examples)  

Symptom
Solution

Small white spots appear in the same place on

every print.

 

Make another print. If the defect is in the same location, call Customer Support. If not, replace the imaging unit.

Vertical bands of varying width and density appear across the prints.

 

  • Reprint several pages.
  • Try changing the background color of the print.
  • If the problem persists, visit the Xerox Office web site or call Customer Support.

Dark band appears in the same area on B-size paper, about 364 mm (14.3 in.) from the leading edge of the media, or on every other print on A/A4 media.

 

  • Reprint several pages.
  • Try changing the background color of the print.
  • If the problem persists, visit the Xerox Office web site or call Customer Support.

Print shows small, random light or dark spots in a single color.

 

Replace the color toner cartridge.

Prints are missing fine-line detail.

Refer to the % Remaining gauge for the imaging unit on the Consumables Page. The imaging unit may need to be replaced.

Prints have dull, faded colors.

  • If you are using a media tray, make sure that you have loaded the correct media in the paper tray or transparency tray.
  • If you are using the Multi-Purpose Tray, make sure that you have selected the correct media type in the printer's front panel.

Print the Consumables Page and Service Print 1 from the front panel's Help Pages.

  • If all colors are faded on the four-color Service Print 1, the imaging unit may need to be replaced. Refer to the % Remaining gauge for the imaging unit on the Consumables Page.
  • If one color is faded, replace the toner cartridge.

Make sure that the imaging unit stays covered until immediately before installing it in the printer. Exposure to light can damage the imaging unit and will produce streaks or faded prints.

Make sure that the toner cartridges are installed correctly.

Make sure that you use high-quality laser paper. See the User Guide for recommended media types, weights, and sizes.

Use only Xerox Office transparencies. Xerox Office does not guarantee the results of non-Xerox Office transparencies in Xerox Office printers.

Try a different color correction mode.

Image is very faded or pieces of the image are missing; toner on the page is loose.

When using the Multi-Purpose Tray, make sure that you have selected the correct media type in the printer's front panel menu.

Make sure that the paper guides are set flush against the media in the paper trays.

Make sure that specialty media is used only in the multi-purpose tray.

Images are offset or ghosted.

  • Reseat the fuser roll cartridge.
  • The fuser roll cartridge may be depleted. Replace fuser roll cartridge.
  • If you are making more than 500 prints per day, order the Hi-duty Fuser Roll Cartridge.

Photographic images appear grainy or mottled.

Check your driver or application print settings. Turn off Image Smoothing; in your application turn off Finepoint.

Streaks or spots

Most spots are caused by fingerprints or dust introduced into the printer while installing the Imaging Unit or loading media.

Make sure that the surface where you unpack the imaging unit, paper, and transparencies is free of dust. Keep supplies in a covered area or a closed box.

Make sure that the imaging unit stays covered until immediately before installing it in the printer. Exposure to artificial light for more than 3 minutes or direct sunlight for 30 seconds can damage the imaging unit.

Do not touch the right side or underside of the imaging unit; fingerprints affect print quality.

Make sure that the media is clean.

Make sure that you handle the media on the outside edges to avoid fingerprints.

To get rid of fingerprint spots, print 20 prints to clear.

The back of the printed page appears dirty.

Toner particles have contaminated the transfer roller. This can happen if the printed image is larger than the media (for example, when printing on envelopes). Run 10-20 prints to clean the transfer roller.

If you can't make a print  

Symptom
Solution

Printer not operating

Make sure that you plugged in the printer and turned it on.

Make sure that you connected the interface cable(s) properly.

Print Service Print 1 from the front panel to verify that the controller board is functional.

Verify that your printer can communicate:

If you have a Macintosh
Make sure that you have the correct PPD file installed and selected and that you have selected the printer in the Chooser. If the printer's name does not appear in the Chooser, your network connection may be faulty.

You can use the Print Window command in the Finder to send a file to the printer without using an application. If the communication link between your computer and the printer is working, the printer produces a directory listing of the active window on the desktop.

If you have a PC
Type this DOS command:

echo %! > port

echo showpage [Ctrl-D] > port

Where [CTRL-D] indicates pressing the D key while holding down the CTRL key. Substitute the name of the printer port (for example LPT1:, LPT2: ) for the variable port in this command. For example, if you are testing a parallel connection on LPT1, type:

echo %! > lpt1:

echo showpage [Ctrl-D] > lpt1:

If the communication link between your computer and the printer is working, the printer ejects a blank page. If this occurs, but you cannot print from your application or through Windows, make sure that the appropriate driver is installed and that you have selected the printer correctly.

If the printer does not respond by printing a page from the computer but does print from the front panel, suspect your network. If the printer will not print from the front panel, call Customer Support.

Printer doesn't appear in the Chooser (Macintosh)

Make sure that the printer is turned on and the cables are correctly attached.

Check the termination (refer to the documentation for your network adapter or connector for information on termination).

If you have changed the printer's name, make sure that you have given it a unique name (not the same as any other printer in the zone or on the network).

Make sure that the correct network is selected in either the Network or AppleTalk Control Panel.

 

 

Problems with image size and position  

Symptom
Solution

Off-set images

Check your application for correct image sizing.

Make sure that media is loaded correctly in the media trays. Set the paper guides flush against the media.

Make sure that you have installed the driver for this printer, or the correct PPD file, so that you can select the correct page sizes from the driver.

If printing on transparencies, and you have a Lower Tray Assembly installed, make sure that the transparency tray is installed in tray slot no. 1(the tray slot in the printer).

Cut-off images

Check your application for image sizing.

Make sure that you are using the correct PPD file and have selected the correct page size.

Make sure that the correct size media is in the media tray.

Make sure that media is loaded correctly in the media trays. Set the paper guides flush against the media.

 

Problems with jams  

Symptom
Solution

Frequent paper-picking errors

Fan the paper or transparencies before installing them in their respective trays; this is especially important for transparencies because they tend to stick together.

Make sure that the media is installed under the hook at the front of the media tray and that the paper guides are set flush against the media.

Use paper from a fresh ream.

Frequent media jams

Use only high-quality laser paper and other media. See the User Guide for recommended media types, weights, and sizes.

If you are using media that is 120 g/m2 (28 lb.), check if the Face Down media output setting is selected in the driver. If it is, change the setting to Face Up. If the problem persists, use the Multi-Purpose Tray rather than a media tray.

Use only Xerox Office transparencies. Xerox Office does not guarantee the results of non-Xerox Office transparencies in Xerox Office printers.

Make sure that the media is installed under the hook at the front of the media tray and that the paper guides are set flush against the media.

Do not overfill the media trays, as indicated by the fill labels on the trays.

Use paper from a fresh ream.

Media frequently wraps around the fuser.

Replace the fuser roll cartridge.

Use only Xerox Office media.

Verify driver settings for specialty media.

 


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