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Phaser 740


Symptoms and solutions

Front Panel Messages  

Symptom
Possible Causes
Solution

Power indicator is blinking

The printer is receiving, processing or printing a job.

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

You have entered the menu in the front panel.

Exit the menu.

Power indicator is off

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

Make sure that the printer is turned on. 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 reads <color>:low.

Correct the condition reported by the front panel.

Error indicator is blinking

The printer is stopped because it detected a user-correctable error such as an open door or a media jam.

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

Error occurred that may be user-correctable.

Press the Info /More button to access information on the error condition.

Error occurred that is not user-correctable.

Read the front panel message. If the message includes an error number, find that number listed in Error codes and follow any directions there for recovery.

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 Menu to re-enter the menu.

Front panel reports:
Jam at <Location>

Media jam.

  • To find the jam: See the front panel message. Also, refer to the illustration on the inside front door.
  • To clear the jam: Refer to Clearing a media jam.
  • Make sure that paper or transparencies are installed correctly and in the media-specific tray. See Loading media trays for details on loading media.
  • To prevent a jam: Clean the rollers. See Printing the cleaning page for details on printing the cleaning instructions.

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.

Media is wrinkled or curled.

Change the media.

Media is too thick or too thin.

Use recommended media; refer to All about media.

For media loaded in the Multi-Purpose Tray, make sure that you have set the Media Thickness Switch on the printer to accommodate thick, medium, or thin media.

Front panel reports:
MPT: <media>

The printer detects media in the Multi-Purpose Tray and is waiting for information on the type of media.

  • Scroll through the selections to choose the media type you have loaded in the Multi-Purpose Tray.

Front panel reports:
<color>:low

The indicated color Toner Cartridge is almost empty.

  • Change the Toner Cartridge soon.

Front panel reports:
Stopped:
replace <color>

Indicated color Toner Cartridge is empty.

Replace the indicated color Toner Cartridge now; the printer stops until you replace the cartridge.

Front panel reports:
<color> missing

A Toner Cartridge is missing.

Install the indicated color Toner Cartridge.

Front panel reports:
Imaging unit:replace

The Imaging Unit is wearing out.

Replace the Imaging Unit soon.

Front panel reports:
Imaging unit expired

The Imaging Unit is worn out.

Replace the Imaging Unit now.

Front panel reports:
Fuser:replace

The Fuser is wearing out.

Replace the Fuser soon.

Front panel reports:
Fuser expired

The Fuser is worn out.

Replace the Fuser now; although it continues to function, the print quality is affected.

Front panel reports:
Fuser Roll:replace

The Fuser Roll is wearing out.

Replace the Fuser Roll soon.

Front panel reports:
Transfer Kit:replace

The Transfer Kit is worn out.

Replace the Transfer Kit.

Front panel reports:
Error ##

An error occurred that may be user-correctable.

  • Press the front panel's Info button for more information on the problem. Press the button labeled More for suggestions on correcting the problem.
  • Use the information in Error codes to correct the problem.
  • If the error persists, call Service. See Customer Support Centers.

 

Print quality problems  

Black-and-white prints instead of color

In the front panel's Printer Defaults menu, check the default setting for Print Mode. If it is set to Black Only, change the setting to Color.

If your printer is a Phaser 740L printer (check the nameplate on the front of the printer), it will only print in black and white until you add color with the 740LCS Color Kit.

Print shows a single color ( a ) that is not uniform

or

Print shows a single color ( b ) with many vertical streaks (both light and dark) of slightly different density and non-uniform color.

Replace the color Toner Cartridge.

 

Print appears faded in a single color.

Check the density setting: From the front panel, access the Calibrate Colors menu and print the Color Reference Page. Compare the settings to the examples on the Color Density Samples and, if necessary, adjust the density in the front panel. Refer to Controlling color density.

Replace the color Toner Cartridge soon (depending on the complexity of your prints, you can continue to print up to 100 more pages).

 

A single color has a wide, light, vertical streak.

Replace the color Toner Cartridge.

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

Replace the color Toner Cartridge.

A single color shows a light, repeating horizontal line.

To fix the problem:

  • Run 20-30 prints. The impression will disappear with continued time and use.

 

To avoid the problem:

  • Occasionally, or a day or two before installing a new Toner Cartridge, rotate the gear on the end of the cartridge by at least a quarter turn.

Prints are missing fine-line detail.

Replace the Imaging Unit.

Dark color spots and dark or light streaks appear in all colors.

Replace the Imaging Unit.

Print shows a straight, thin and even, light vertical line in all colors.

Replace the Imaging Unit.

Each color " bleeds" into the color band below it (the most visible is magenta in the yellow band).

Replace the Imaging Unit.

 

A single white spot appears in approximately the same vertical place on the page.

Run 20-30 blank pages of paper. If the problem persists, replace the Imaging Unit.

A single, wide, light horizontal band appears in one place on the page (near the top) or all colors are faded.

Wait overnight and print the Service Print 1. If print quality hasn't changed, replace the Imaging Unit.

Large light spot(s) appear randomly in the print, approximately on the same horizontal and vertical place or they move vertically from one print to another.

Print several pages until the artifacts fade.

A smear in the image repeats at the same location on the page.

Replace the Imaging Unit.

One or more vertical, dark and even fine lines appear on the print through all colors.

Replace the Imaging Unit; make sure that the old Imaging Unit is not exposed to light for more than 3 minutes.

If a new Imaging Unit does not correct the problem:

  • Put the old Imaging Unit back into the printer.
  • Repack the new Imaging Unit.
  • Replace the Fuser.

Fuser order numbers:
110 Volt: 016-1660-00
220 Volt: 016-1661-00

A piece of the printed image is missing and reappears out of place, approximately 129 mm (5 in.) down the page.

  • Print 20 pages of blank pages to clean the roller.

If you still see the problem:

    • Replace the Fuser Roll.

If you still see the problem:

    • Replace the Fuser.

The surface of the printed image appears to have vertical scratches (visible by holding the print at an angle and observing the "shine" of the image).

At first, the scratches appear only on the printed image; eventually, dark vertical scratches appear on the unprinted portion of the page.

Replace the Fuser (depending on your quality needs, you can continue to print until the dark vertical lines appear).

Light vertical streaks appear in all colors (most easily visible in yellow).

Replace the Main Charge Grid. Complete instructions are packaged with the Main Charge Grid.

Dark and wavy vertical streaks appear in all colors.

The solution is one of the following:

  • Remove and reinsert the Main Charge Grid.
  • Replace the Main Charge Grid.
  • Replace the Imaging Unit.

The print is extremely light with a "washed out" look.

 

 

The solution is one of the following:

  • If using a paper tray or transparency tray, make sure you have loaded the correct media in the tray you are using.
  • If using the Multi-Purpose Tray, make sure you have selected the correct media type at the front panel prompt.
  • Remove and reinsert the Main Charge Grid.
  • Replace the Main Charge Grid.
  • Replace the Imaging Unit.
  • Replace the Transfer Kit.

The entire page prints in black, including the borders.

The solution is one of the following:

Toner spots appear on the back of the media.

Replace the Transfer Kit.

The page prints in black in the image area only (the borders are white).

Turn the printer off and back on again. If the problem persists, call Service. See  Customer Support Centers.

The page is blank.

  • Remove and re-insert the Imaging Unit.
  • Turn the printer off and back on again.
  • If the problem persists, call Service. See Customer Support Centers.

Thin horizontal stripes or a "weave" pattern appears in a complex image.

Increase the amount of memory.

or

Print the image at a lower resolution.

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 Color Reference Page from the front panel's Calibrate Colors menu. Check the density settings for each color and compare them to the examples on the Color Density Samples card. (in the User Guide).

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

  • If all colors are faded on the Test Print, 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 (and you have checked and/or adjusted the density setting for that color), 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 light streaks or faded prints.

Make sure that the Toner Cartridges are installed correctly.

Make sure that you use a high-quality laser paper: 60 - 90 g/m2 (16 - 24 lb.) paper in the media trays and 75 - 150 g/m2 (20 - 39 lb.) paper with the Multi-Purpose Tray. Refer to All about media for more information.

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

Photographic images appear grainy

Check the front panel's Print Quality menu. If the selected mode is Presentation, change it to Standard.

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 light for more than 3 minutes 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 a few prints (you can print any of the Help Pages in the front panel menu).

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 print engine is functional by pressing the Test Print button (the blue pushbutton in the center of the back of the printer), and holding it down for 3 seconds. If the print engine is functional, it will print a composite-gray page.

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.

In the Finder, you can use the Print Window command 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.

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 jams

Symptom
Solution

Frequent paper-picking errors

Make sure that the Media Thickness Switch is set correctly for the media installed in the Multi-Purpose Tray. Refer to Setting media thickness for details on setting media thickness. If the printer picks multiple sheets of paper at once, set the Media Thickness Switch to a thinner setting.

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 hooks at the front of the media tray.

If printing on transparencies and your printer has the Automatic Duplex/Lower Tray Assembly, make sure that the transparency tray is installed in the middle tray slot.

Clean the paper-feed rollers and paper-pick rollers. Print the instructions from the Cleaning menu in the front panel.

Frequent media jams

Make sure that you use a high-quality laser paper: 60 - 90 g/m2 (16 - 24 lb.) paper in the media trays and 75 - 150 g/m2 (20 - 39 lb.) paper with the Multi-Purpose Tray. Refer to All about media for more information.

Make sure that the Media Thickness Switch is set correctly for the media installed in the Multi-Purpose Tray. If the printer has frequent paper jams, set the Media Thickness Switch to a thicker setting. Refer to Setting media thickness for more information.

If you are using media that is 105 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 transparencies. Xerox does not guarantee the results of non-Xerox transparencies in Xerox printers.

Make sure that the media is installed under the hooks at the front of the media tray.

Do not overfill the media tray, as indicated by the red line on the right side of the tray.

Clean the paper-feed rollers and paper-pick rollers. Print the instructions from the Cleaning menu in the front panel.

Media frequently wraps around the Fuser.

Replace the Fuser Roll.

 

 

 

Problems with image size and position  

Symptom
Solution

Off-set images

Check your application for correct image sizing.

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.

Image shifts or margins are incorrect (Macintosh)

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

If printing on transparencies and your printer has the Automatic Duplex/Lower Tray Assembly, make sure that the transparency tray is installed in the middle tray slot.

 

 

Problems with automatic duplexing  

Symptom
Solution

Output is single-sided

Make sure that you have installed the Lower Tray Assembly and that the Duplex Unit is inserted in the upper slot of the printer.

Make sure that you have loaded the paper tray with paper and installed it in the middle or lower slot of the printer.

Make sure that you have configured your printer driver to recognize the Lower Tray Assembly and Duplex Unit. Refer to the printer's Setup Guide for instructions.

Make sure that you have made the selection for duplex printing, using one of these methods (driver selections override other settings):

  • Front Panel: Under Duplex in the Printer Defaults menu.
  • Print screen: Using a supported driver, select Print on Both Sides or 2-Sided Printing.

Frequent jams at the Duplex Unit

Use only laser paper.

Laser paper must be between 75 - 90 g/m2 (20 - 24 lb.) in weight.

Clean the rollers inside the Duplex Unit with 90% isopropyl alcohol. Print the Cleaning Instructions from the front panel's Cleaning menu.

Margins on the first side and second side of a duplex print are not aligned

Adjust the margins using the front panel Margin Adjust menu. Instructions are included in this menu. For more details, see Adjusting margins.

Second side of a duplex print is upside-down

Select the correct method for binding preference in the front panel or the Print screen.

  • Long-edge binding: Page turns on the long side, regardless of image orientation.
  • Short-edge binding: Page turns on the short side, regardless of image orientation.

Refer to Automatic duplex for detailed instructions.

 

 

Printed colors are not what you expected  

Symptom
Solution

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 Color Reference Page from the front panel's Calibrate Colors menu. Check the density settings for each color and compare them to the examples on the Color Density Samples card (in the User Guide).

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

  • If all colors are faded on the Test Print, 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 (and you have checked and/or adjusted the density setting for that color), 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 light streaks or faded prints.

Make sure that the Toner Cartridges are installed correctly.

Make sure that you use a high-quality laser paper: 60 - 90 g/m2 (16 - 24 lb.) paper in the media trays and 75 - 150 g/m2 (20 - 39 lb.) paper with the Multi-Purpose Tray. Refer to All about media for more information.

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

Photographic images appear grainy

Check the front panel's Print Quality menu. If the selected mode is Presentation, change it to Standard.

The Presentation print-quality selection in the front panel substitutes Presentation mode rendering when Standard mode is selected in the driver.

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 light for more than 90 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 a few prints (you can print any of the Help Pages in the front panel menu).

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.

Black-and-white prints instead of color

In the front panel's Printer Defaults menu, check the default setting for Print Mode. If it is set to Black Only, change the setting to Color.

If your printer is a Phaser 740L printer (check the nameplate on the front of the printer), it will only print in black and white until you add color with the 740LCS Color Kit.

Black-and-white prints instead of color

 

Macintosh users
Make sure that you are using the correct PPD file with the latest Apple LaserWriter printer driver (version 8.3.4 or higher), which supports color PostScript.

Make sure that Color/Grayscale is selected in the Print dialog box. Some applications require special files to print in color. Make sure that these files are properly installed. For information, refer to the topics on the printer's CD-ROM or the Xerox World Wide Web site.

Make sure that you have not selected Fast Monochrome or Premium Monochrome in the Print Quality dialog box.

 

PC users
Be sure to use a driver that supports color PostScript.

If you are using Windows, make sure that the Color box in the Options dialog box is checked. For information on the drivers, refer to the printer's CD-ROM or World Wide Web topics.

Make sure that you have not selected Fast Monochrome or Premium Monochrome in the Xerox Printer Features dialog box.

If you are not using a driver, make sure that you have not set the monochrome mode selection code; make sure that the front panel is not set for Fast Monochrome or Premium Monochrome.

Blue colors look too purple

If printed blue colors look too purple, print your document with the Vivid Color color correction. Refer to Color corrections for information on color corrections.


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