THESE CARTRIDGES DO NOT HAVE THE OPC DRUM UNIT INTEGRATED.  THERE IS AN INDIVIDUAL DRUM UNIT FOR EACH COLOR WHICH IS A REPLACEABLE MAINTENANCE ITEM.

There are 4 colors in this series; Black, Cyan, Magenta, and Yellow.

These are the high yield versions of the C734 cartridges.  These can only be used in the C736, X736, and X738 series printers.

 

Not Recognizing

 

Verify they have the correct drum unit for their specific model printer.

 

Make the toner cartridge is properly installed and fully inserted into the printer.  Be sure they are installing the correct color into the correct spot.

 

To remove and install the toner cartridges in a Lexmark X736/X738 Series printer do the following;

–          Open the upper front door, and then open the lower front door.

 

–          Note the locations of the different color cartridges.  Pull up and out on the green tabs of the specified cartridge to remove it from the printer.

 

–          Make sure you have the correct color cartridge for the one being replaced.  Insert the cartridge into the correct color slot and make sure it is fully installed.  The cartridge clicks into place when correctly installed.

 

–          Close the lower front door, and then close the upper front door.

 

Print Quality Issues

 

There is a piece a paper held on by tape that needs to be removed and then a black paper seal that will need to be pulled prior to installation.

 

The drum is separate from the cartridge.  There is an individual drum for each color.  The drums are located on the front panel of the printer that they open to access the toner cartridges.  To help isolate print quality problems, print the print quality test pages.  To do this, do the following;

–          Turn the printer off.

–          Hold down the 2 and 6 keys while turning the printer on.

–          Release the buttons when the screen with the progress bar appears.  The printer performs a power-on sequence, and then the Configuration Menu appears.

–          Touch PRINT QUALITY PAGES.

–          Touch PRINT QUALITY PAGES again.  The print quality test pages print.

–          Touch BACK.

–          Touch EXIT CONFIG MENU.

 

Use the print quality pages to help try to determine what print quality issue is occurring and if the problem is present across all the colors or just one color in particular.

 

For minor print quality issues the printhead lenses may be dirty and should be cleaned.  To clean the printhead lenses do the following;

–          Open the upper front door, and then open the lower front door.

 

–          Remove all four toner cartridges.  Do NOT remove the drum units.

–          Clean the printhead lenses using a can of compressed air or a soft, dry, lint-free cloth.  Do NOT use moisture of any kind.

 

–          Close the lower front door, and then close the upper front door.

 

Almost all ghost imaging, lines, streaks, and repeating image defects will be caused by a bad drum.  The drums are replaceable maintenance items that will need to be replaced usually after 4-6 toner changes.  We do not currently carry replacement drum units.

 

There is a roller on the front of the toner cartridge that dispenses the toner powder onto the separate OPC drum.  You can check this roller for cracks or damage.  Do NOT touch the roller.  Being that this dispenses toner powder it is normal for this roller to be coated in toner powder.  Do not wipe the toner powder off the roller.  Be careful in handling the cartridge as slight toner powder leakage is possible if the roller is moved.

 

Over a trash can, shake the cartridge front to back and side to side to redistribute the toner powder inside the cartridge.

 

Not Fitting

 

Verify they have the correct cartridges for their specific printer model.  Make sure the correct color cartridge is being installed into the correct color slot.  Verify that all seals and protective pieces of paper that may be present on the cartridge are removed.  Check inside the printer for any obstructions.  Check the cartridge itself for physical damage.