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Lexmark T420 User's Reference (3.4 MB) - Page 83

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Problem Characters have jagged or uneven edges, or image quality is poor. Solution • Change the Print Resolution setting in the printer driver or in the Local Printer Setup Utility. Use a print resolution higher than 300 dots per inch (dpi). For more information, see Using the Local Printer Setup Utility. • If you are using downloaded fonts, verify that the fonts are supported by the printer, the host computer, and the software application. • Resolution was automatically reduced. Reduce the complexity of the print job or add printer memory. The job prints, but the left and top margins are incorrect. • Make sure the Paper Size setting is set correctly in the printer driver or in the Local Printer Setup Utility. • Verify that the Print Area setting in the printer driver or in the Local Printer Setup Utility is correct. Print a menu settings page to verify this. For more information, see Printing the menu settings page and Using the Local Printer Setup Utility. • Make sure the margins are set correctly in your software application. Printing is too dark. Change the Toner Darkness setting in the printer driver or in the Local Printer Setup Utility. For more information, see Using the Local Printer Setup Utility. For Macintosh users: Make sure the lines per inch (lpi) setting is not set too high in the software application. Pages are blank. • The print cartridge may be out of toner or defective. Replace the used print cartridge with a new one. See Replacing the print cartridge for instructions. • You may have a software error. Try turning the printer off and back on. • Make sure the packaging material is removed from the print cartridge. See page 71 of Replacing the print cartridge for information about removing the packaging. • Check the print cartridge to be sure it is installed correctly. See Replacing the print cartridge for more information. 83

Section	Page
Go back	3
Printer overview	7
Tips for successful printing	8
Tips on storing print media	8
Avoiding jams	8
Sending a job to print	10
Printing from a Windows environment	10
Printing from a Macintosh computer	10
Canceling a print job	11
From the printer operator panel	11
From a Windows computer	11
From a Macintosh computer	11
Printing Print Quality Test Pages	12
Understanding fonts	13
Printing the menu settings page	18
Print media sources and specifications	19
Storing print media	23
Clearing jams	24
Jams under the print cartridge	27
Jams behind the upper front door and the rear output bin door	28
Jams in the fuser	30
Exiting to the standard output bin	31
Jams behind the rear output bin door	32
Jams in the multipurpose feeder	33
Jams in the tray 1 area	33
Jams in the tray 2 area	34
Jams inside a tray after clearing the metal stop	34
Jams under the printer	35
Loading trays	37
Using the optional label tray	37
Loading the standard tray, the optional 250-sheet tray, or the optional label tray	37
Loading the optional 500-sheet tray	42
Using and loading the multipurpose feeder	48
Opening the multipurpose feeder	49
Loading the multipurpose feeder	51
Using the duplex function	57
Duplex printing on letterhead	57
Using Duplex Bind	57
Using the output bins	59
Using the standard output bin	59
Raising the paper rest	60
Using the rear output bin	60
Determining the status of supplies	63
Conserving supplies	65
Maintaining your printer	66
Ordering supplies	67
Ordering a print cartridge	67
Storing the print cartridge	68
Replacing the print cartridge	69
Removing the used print cartridge	69
Cleaning the printer	71
Installing the new print cartridge	71
Cleaning the printhead lens	74
Solving basic printer problems	75
Solving printing problems	76
Solving print quality problems	80
Solving option problems	85
Solving network printing problems	86
Solving other problems	87
Print media guidelines	88
Paper	88
Letterhead	88
Printing on letterhead	88
Transparencies	89
Envelopes	90
Labels	90
Printer maintenance when printing on labels	91
Card stock	92
Printer maintenance when printing on card stock	92
Linking trays	93
Using MarkVision to manage the printer	94
Using the operator panel	95
Understanding the operator panel lights	96
Understanding the printer configuration menus	125
Accessing the printer menus	125
Printing the Printer Settings Configuration sheet	125
Advancing in the menus and menu items, and selecting and saving values	126
Exiting the menus	126
Menus overview	126
Utilities menu	126
Setup menu	127
Parallel menu	127
USB menu	128
Network menu	129
Restoring factory defaults	131
Using Hex Trace mode	133
Using the Local Printer Setup Utility	134
Removing the printer from an optional drawer	136
Removing an optional memory card	137
Accessing the system board	137
Removing optional memory cards	140
Reinstalling the shield	140
Reattaching the side door	141
Notices	143
Trademarks	144
Licensing notice	146
Safety information	146
Cautions and warnings	147
Electronic emission notices	147
Federal Communications Commission (FCC) compliance information statement	147
Industry Canada compliance statement	148
Avis de conformité aux normes d’Industrie Canada	148
European Community (EC) directives conformity	148
Japanese VCCI notice	148
The United Kingdom Telecommunications Act 1984	148
Noise emission levels	149
Energy Star	149
Laser notices	150
Laser advisory label	150
Laser notice	150
Statement of limited warranty	150