Lexmark E240n User Manual

101
Print quality problems
Print quality problems
You can solve many print quality problems by replacing a supply or maintenance item that has reached the end of its 
intended life. Use the following table to find solutions to print quality problems.Dust is gathering on the 
paper tray when it is 
extended.Attach the dust cover to the back of the printer. This protects the paper tray from the 
environment as well as keeping the tray from being knocked out of position while it is 
extended.
See Attaching...

102
Print quality problems
Print irregularities Paper has absorbed moisture due 
to high humidity.
 You are using paper that does not 
meet the printer specifications.
 The fuser is worn or defective. Load paper from a fresh package in 
the paper tray.
 Avoid textured paper with rough 
finishes.
 Make sure the printer driver paper 
type setting matches the type of 
paper you are using.
 Replace the fuser
*.
Print too light The Toner Darkness setting is too 
light.
 You are using paper that does...

103
Print quality problems
Uneven print densityThe toner cartridge is defective. Replace the toner cartridge.
Ghost Images The Form Type setting in the printer 
driver is set incorrectly.
 Toner level is low in the toner 
cartridge. Make sure the Form Type setting is 
correct for the paper or specialty 
media you are using.
 Replace the toner cartridge.
Uneven printing
(Print only appears on one side of the 
page.)The toner cartridge is not properly 
installed.Remove and then reinsert the toner...

104
Print quality problems
Solid black pages The toner cartridge is defective.
 Your printer requires servicing. Replace the toner cartridge.
 Call for service.
Paper curls badly once it prints and 
exits to the binThe Paper Weight setting is wrong for 
the type of paper or specialty media 
you are using.Change Paper Weight
† to Smooth.
SymptomCauseSolution
*To replace the fuser, call a service technician. †This setting can be changed using the Local Printer Setup Utility. See Using the Local Printer...

105
Print quality problems
How to clean the printhead lens
You can solve some print quality problems by cleaning the printhead lens.
1Turn the printer off.
2Open the front cover by pressing the button on the left side of the printer and lowering the cover.
Downloaded From ManualsPrinter.com Manuals 

106
Print quality problems
3Remove the print cartridge assembly out of the printer by pulling on the toner cartridge handle.
Note:Do not press the button on the print cartridge assembly.
Place the print cartridge assembly on a flat, clean surface.
Warning:Do not leave the print cartridge assembly exposed to direct light for an extended period of time. 
Extended light exposure can cause print quality problems.
Downloaded From ManualsPrinter.com Manuals 

107
Print quality problems
4Locate the glass printhead lens, which is located within the recessed area in the top of the printer.
5Gently wipe the printhead lens with a clean, dry, lint-free cloth.
Warning:Not using a clean, dry, lint-free cloth may result in damage to the printhead lens.
6Install the print cartridge assembly into the printer by aligning the arrows on the guides of the print cartridge 
assembly with the arrows on the tracks in the printer and pushing the print cartridge assembly in as...

108
Index
Numerics
550-sheet drawer 50
A
Auto CR after LF (Setup menu) 83
Auto LF after CR (Setup menu) 83
B
booklets 42
Busy light 59
buttons 52
C
canceling a print job 46
card stock 26
cleaning the printhead lens 105
clearing paper jams 34
configuration menus
Network
MAC Binary PS 82
NPA Mode 82
Set Card Speed 82
Parallel
MAC Binary PS 83
Mode 2 83
NPA Mode 82
Protocol 82
printing the Printer Settings Configuration 
sheet 80
Setup
Auto CR after LF 83
Auto LF after CR 83
USB
MAC Binary PS 83
NPA Mode...

109
Index
Load Paper light
manual feeder 62
Tray 1 or 550-sheet tray 62
loading
250-sheet tray (Tray 1) 28
550-sheet tray 28
letterhead 44
manual feeder 32
Local Printer Setup Utility 87
M
MAC Binary PS
Network menu 82
Parallel menu 83
USB menu 83
Macintosh 14
to print to a network 
printer 19
USB printing 14
maintaining the printer
cleaning the printhead 
lens 105
manual duplex
light sequence 63
printing 39
manual feeder 32, 62
memory card 49
menu settings page 85
menus
navigating
advancing in 81...

110
Index
R
rear exit 32
recycling supplies 95
Replace photoconductor kit 
light 64, 65
Reset Factory Defaults 
(Utilities menu) 84
Reset Photoconductor Counter 
(Utilities menu) 84
S
safety information 3
secondary error codes 70
Complex page 74
Error communicating with 
the host computer 77
Font error 76
Host interface disabled 77
Insufficient collation area 75
Insufficient printer 
memory 74
Invalid engine code 79
Invalid network code 79
Memory full 78
Network interface errors 76
Paper jam at the input...