Lexmark 25A0591, C736 Solving color quality problems

Uneven print density

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These are possible solutions. Try one or more of the following:

A TONER CARTRIDGE MAY BE WORN OR DEFECTIVE

Replace the worn or defective toner cartridge.

A PHOTOCONDUCTOR MAY BE DEFECTIVE

Replace the defective photoconductor.

Solving color quality problems

This section helps answer some basic color‑related questions and describes how som e of the features provided in the

Quality Menu can be used to solve typical color problems.

FAQ about color printing

What is RGB color?

Red, green, and blue light can be added together in various amounts to produce a large range of colors obser ved in

nature. For example, red and green can be combined to create yell ow. Televisions and computer monitors create

colors in this manner. RGB color is a method of describing colors by indicating the amount of red, green, or blue

needed to produce a certain color.

What is CMYK color?

Cyan, magenta, yellow, and black inks or toners c an be printed in various amounts t o produce a large range of color s

observed in nature. For example, cyan and yellow can be combined to create green. Printing presses, inkjet printers,

and color laser printers create colors in this manner. CMYK color is a method of d escribing colors by indicating the

amount of cyan, magenta, yellow, and black needed to reproduce a particul ar color.

How is color specified in a document to be printed?

Software programs typically specify document color using RGB or CMYK colo r combinations. Additionally, they allow

users to modify the color of each object in a document. For more information, see the software program Help topics.

How does the printer know what color to print?

When a user prints a document, information describing the type and color of each object is sent to the printer. The

color information is passed through colo r conversion tables that tran slate the color into the appropr iate amounts of

cyan, magenta, yellow, and black toner needed to produce the desired color. The object information det ermines the

application of color conversion tables. For example, it is possible to apply one type of color co nversion table to text

while applying a different color conversion table to photographic imag es.

Troubleshooting 190

Contents

Main Contents Understanding printer menus....................................................................76 Page Safety information Page Learning about the printer Thank you for choosing this printer! Finding information about the printer ? Selecting a location for the prin ter Page Printer configurations Basic model Configured models Page Using the security lock feature Understanding the printer control panel Additional printer setup Installing internal options Available internal optio ns Accessing the system board to install internal options 2 Installing a memory card 1 2 Page Installing a flash memory or firmware card Page Installing an Internal Solutions Port Page Page Page Page Page Installing a printer hard disk Page Page Page 2 Installing hardware options Installing optional trays 1 2 Attaching cables Verifying printer setup Printing a menu settings page Printing a network setup page Setting up the printer s oftware Installing printer software Updating available options in the printer driver Setting up wireless prin ting Information you will need to set up the printer on a wireless network Installing the printer on a wireless network (Windows) Page Installing the printer on a wireless network (Macintosh) Page Page Installing the printer on a wired network Page Changing port settings after installing a new network Internal Solutions Port Page Setting up serial print ing Page Minimizing your printer's environmental impact Saving paper and toner Using recycled paper and other office papers Saving energy Using EcoMode 1 2 3 4 5 6 Reducing printer noise 1 2 3 4 5 6 Adjusting Power Saver Adjusting the brightness of the display Recycling Recycling Lexmark products Recycling Lexmark packaging Returning Lexmark cartridges for reuse or recycling Loading paper and specialty media Setting the paper si ze and type Loading the paper tray Page ABC 6 7 Loading the multipurpose feeder Page Page Linking and unlinking trays Linking trays Unlinking trays Creating a custom name for a paper type 1 Assigning a custom paper type name to a tray Paper and specialty media guidelines Paper guidelines Paper characteristics Weight Curl Unacceptable paper Selecting paper Selecting preprinted forms and letterhead Storing paper Supported paper siz es, types, and weights Paper sizes supported by the printer Paper and specialty media guidelines 63 Paper types and weights supported by the printer Paper and specialty media guidelines 64 Page Printing Printing a document Printing a document Printing specialty docu ments Tips on using letterhead Tips on using transparencies Tips on using labels Tips on using card stock Printing confidential and other held jobs Holding jobs in the printer Printing confidential and other held jobs Printing from a flash drive Printing photos from a PictBridgeenabled digital camera Printing information pages Printing a font sample list Printing a directory list Printing the print quality test pages Canceling a print job Canceling a print job from the printer control panel Canceling a print job from the computer Printing in black and white Using Max Speed and Max Yield Understanding printer menus Menus list Supplies menu Supplies menu Paper menu Default Source menu Paper Size/Type menu Page Page Configure MP menu Substitute Size menu Paper Texture menu Page Paper Weight menu Page Paper Loading menu Custom Types menu Understanding printer menus 87 Universal Setup menu Reports menu Reports menu Network/Ports menu Active NIC menu Standard Network or Network <x> menus Network Reports menu Understanding printer menus 92 Network Card menu Network/Ports > Standard Network or Network <x> > Std Network Setup or Net <x> Setup > Network Card TCP/IP menu Network/Ports > Standard Network or Network <x> > Std Network Setup or Net <x> Setup > TCP/IP Page IPv6 menu Understanding printer menus 94 Network/Ports > Standard Network or Network <x> > Std Network Setup or Net <x> Setup > IPv6 Wireless menu Network/Ports > Network <x> > Net <x> Setup > Wireless AppleTalk menu Understanding printer menus 95 Network/Ports > Standard Network or Network <x> > Std Network Setup or Net <x> Setup > AppleTalk NetWare menu Network/Ports > Standard Network or Network <x> > Std Network Setup or Net <x> Setup > NetWare LexLink menu Understanding printer menus 96 Network/Ports > Standard Network or Network <x> > Std Network Setup or Net <x> Setup > LexLink menu Standard USB menus Page Parallel <x> menu Page Serial <x> menu Page Understanding printer menus 102 SMTP Setup menu Use the following menu to configure the SMTP server. Security menu Miscellaneous menu Confidential Print menu Disk Wiping menu Security Audit Log menu Set Date/Time menu Settings menu General Settings menu Page Setup menu Finishing menu Quality menu Page Utilities menu XPS menu PDF menu PostScript menu PCL Emul menu Page HTML menu Image menu PictBridge menu Flash Drive menu Understanding printer menus 128 Help menu Page Maintaining the printer Cleaning the exterior of the printer Cleaning the printhead lenses Page Storing supplies Checking the status of supplies Checking the status of supplies from the printer control panel Checking the status of supplies from a network computer 1 Ordering supplies Ordering toner cartridges Ordering photoconductors Ordering a fuser or a transfer module Ordering a waste toner box Replacing supplie s Replacing a toner cartridge 1 Page Page Page Replacing a photoconductor Page Page Replacing the waste toner box 1 2 Moving the printer Before moving the printer Moving the printer to another location Setting the printer up in a new location Shipping the printer Administrative support Finding advanced netwo rking and administrator information Using the Embedded Web Server Checking the virtual display Checking the device status Setting up email alerts Viewing reports Restoring the factory default settings Copying printer sett ings to other printers Clearing jams Avoiding jams Paper tray recommendations Paper recommendations Accessing jam areas 200201 paper jams 1 2 202 paper jam Paper jam under the fuser unit Paper jam behind the fuser unit Page 203 and 230 paper jams Page 24x paper jam Paper jammed in one of the optional trays 250 paper jam Troubleshooting Understanding printer messages Change <src> to <custom type name> Change <src> to <custom string> Change <src> to <size> Change <src> to <type> <size> Close front door Close top access cover and front door Disk Corrupted Insert tray <x> Load <src> with <custom string> Load <src> with <type> <size> Load <src> with <size> Load Manual Feeder with <custom type name> Load Manual Feeder with <custom string> Load Manual Feeder with <type> <size> Load Manual Feeder with <size> Page Unsupported mode, unplug and change mode Unsupported USB hub, please remove Unsupported USB device, please remove 31.yy Missing or defective <color> cartridge 32.yy <Color> cartridge part number unsupported by device 37 Insufficient memory to collate job 37 Insufficient memory, some held jobs were deleted 37 Insufficient memory, some held jobs will not be restored 38 Memory full 39 Complex page, some data may not have printed 52 Not enough free space in flash memory for resources 54 Network <x> software error 54 Standard network software error 55 Unsupported option in slot <x> 56 Parallel port <x> disabled 56 Serial port <x> disabled 56 Standard USB port disabled 57 Configuration change, held jobs were not restored 58 Too many disks installed 58 Too many flash options installed 58 Too many trays attached 59 Incompatible tray <x> 61 Remove defective hard disk 62 Disk full 63 Unformatted disk Page Page 88.2x Replace <color> cartridge Solving basic problems Solving basic printer problems Embedded Web Server does not open C HECK THE NETWORK Solving printing problems Multiplelanguage PDFs do not print 1 2 3 4 Printer control panel display is blank or displays only diamonds MAKE SURE THE INTERNAL PRINT SERVER IS INSTALLED PROPERLY AND WORKING MAKE SURE YOU ARE USING A RECOMMENDED PRINTER CABLE MAKE SURE PRINTER CABLES ARE SECURELY CONNECTED Confidential and other held jobs do not print P ARTIAL JOB , NO JOB , OR BLANK PAGE CHANGE THE PAGE PROTECT SETTING TO OFF Job prints from the wrong tray or on the wrong paper CHECK THE PAPER TYPE SETTING Incorrect characters print M Tray linking does not work LOAD THE SAME SIZE AND TYPE OF PAPER Solving option problems Option does not operate correctly or quits after it is installed R ESET THE C HECK TO SEE IF THE OPTION IS CONNECTED TO THE 1 2 3 MAKE SURE THE OPTION IS INSTALLED MAKE SURE THE OPTION IS AVAILABLE IN THE PRINTER DRIVER MAKE SURE THE OPTION IS SELECTED Solving 2,000-sheet drawer problems T HE ELEVATOR TRAY IS NOT WORKING THE PAPER FEED ROLLERS DO NOT TURN TO ADVANCE PAPER T HE PAPER CONSISTENTLY JAMS IN THE Memory card Solving paper feed problems Paper frequently jams MAKE SURE THERE IS NOT TOO MUCH PAPER IN THE PAPER TRAY Paper jam message remains after jam is cleared Page that jammed does not reprint after you clear the jam Solving print quality problems Isolating print quality problems Blank pages P ACKING MATERIAL MAY BE ON THE TONER T HE TONER CARTRIDGE MAY BE DEFECTIVE OR Characters have jagged or uneven edges Color misregistration ABCDEABCDE Clipped images C HECK THE C HECK THE PAPER SIZE 1 2 Fine horizontal lines appear on color pages Gray background C HECK THE T ONER D ARKNESS Incorrect margins C HECK THE PAPER SIZE Light colored line, white line, or incorrectly colored line A TONER CARTRIDGE IS DEFECTIVE A PHOTOCONDUCTOR IS DEFECTIVE T HE TRANSFER MODULE IS T HE PRINTHEAD LENSES ARE Print irregularities T HE TONER CARTRIDGE , THE TRANSFER MODULE , OR THE FUSER MAY BE WORN OR Print is too dark C HECK THE DARKNESS , BRIGHTNESS , AND CONTRAST Print is too light C HECK THE DARKNESS , BRIGHTNESS , AND CONTRAST COLOR SAVER MAY BE SET TO ON Repeating defects Skewed print Solid color pages T HE PHOTOCONDUCTOR MAY BE DEFECTIVE OR INSTALLED T HE TONER CARTRIDGE MAY BE DEFECTIVE OR LOW ON T HE TONER CARTRIDGE MAY BE WORN , DEFECTIVE , OR Troubleshooting 187 Replace the toner cartridge. T HE FUSER MAY BE Replace the fuser. T HE TRANSFER MODULE MAY BE WORN OR T HE PHOTOCONDUCTOR MAY BE WORN OR T HE FUSER MAY BE WORN OR T HERE IS TONER IN THE PAPER C HECK THE SOFTWARE PROGRAM OR T HE FUSER MAY BE WORN OR Toner specks T HERE IS TONER IN THE PAPER Transparency print quality is poor C HECK THE Solving color quality problems FAQ about color printing 1 2 Manual Color menu Contacting Custome r Support Notices Product information Edition notice UNITED STATES GOVERNMENT RIGHTS Trademarks Federal Communications Commission (FCC) compliance information statement Modular component notice Noise emission levels Waste from Electrical and Electronic Equipment (WEEE) directive Page Laser advisory label Power consumption Product power consumption Power Saver Off mode Industry Canada compliance statement Avis de conformit aux normes de lindustrie du Canada European Community (EC) directives conformity Regulatory notices for wireless products Exposure to radio frequency radiation Industry Canada (Canada) Industry Canada (Cana da) Notice to users in the European Union Statement of Limited Warranty Notices 202 Lexmark C734n, C734dn, C734dtn, C734dw, C736n, C736dn, C736dtn Lexmark International, Inc., Lexington, KY Limited warranty Limited warranty service Extent of limited warranty Limitation of liability Additional rights LEXMARK SOFTWARE LIMITED WARRANTY AND LICENSE AGREEMENT LEXMARK SOFTWARE LICENSE AGREEMENT 1 2 3 4 5 a b c d ADOBE SYSTEMS INCORPORATED NOTICE Index Numerics A B C E F G H I N O P Page Q R S T U V W X